WO2022228189A1 - 光学镜头、摄像头模组和电子设备 - Google Patents

光学镜头、摄像头模组和电子设备 Download PDF

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Publication number
WO2022228189A1
WO2022228189A1 PCT/CN2022/087472 CN2022087472W WO2022228189A1 WO 2022228189 A1 WO2022228189 A1 WO 2022228189A1 CN 2022087472 W CN2022087472 W CN 2022087472W WO 2022228189 A1 WO2022228189 A1 WO 2022228189A1
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Prior art keywords
lens
lens group
optical
optical lens
group
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Ceased
Application number
PCT/CN2022/087472
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English (en)
French (fr)
Inventor
二瓶泰英
拓未松井
张凯元
肖流长
封荣凯
江依达
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to US18/558,167 priority Critical patent/US20240210664A1/en
Priority to EP22794660.5A priority patent/EP4318069A4/en
Publication of WO2022228189A1 publication Critical patent/WO2022228189A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • G02B15/1421—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only the first group being positive
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/15—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective compensation by means of only one movement or by means of only linearly related movements, e.g. optical compensation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95—Computational photography systems, e.g. light-field imaging systems
    • H04N23/958—Computational photography systems, e.g. light-field imaging systems for extended depth of field imaging

Definitions

  • the embodiments of the present application relate to the field of lenses, and in particular, to an optical lens, a camera module, and an electronic device.
  • a telephoto lens (with a longer focal length) is capable of photographing distant objects, providing high magnification while maintaining good image quality.
  • the shooting effect of the telephoto lens is poor.
  • the macro lens can show great ability in shooting close-up macro scenes, but the quality of the images captured in long-distance scenes is poor.
  • the camera lens is incompatible with the shooting of scenes at different positions during the shooting process, it is ensured that high-quality shooting effects can be achieved in different shooting scenarios.
  • multiple lenses are set in an electronic device, and different lenses correspond to different scenes, so as to ensure better shooting effects in different scenes.
  • general electronic equipment will include both a telephoto lens and a macro lens.
  • the telephoto lens is used to shoot the distant scene
  • the macro lens is used to shoot the close scene, so as to ensure the uniformity in different scenes.
  • the space occupied by the plurality of lenses is relatively large, and the arrangement of the plurality of lenses makes the structure of the electronic device more complicated, thereby increasing the manufacturing cost of the electronic device.
  • Embodiments of the present application provide an optical lens, a camera module including the optical lens, and an electronic device including the camera module, aiming to use one optical lens for different shooting scenarios, thereby reducing the space occupied by the optical lens space, and can simplify the structure of the electronic device and reduce the manufacturing cost of the electronic device.
  • the present application provides an optical lens comprising a first lens group and a second lens group arranged from an object side to an image side, and the first lens group and the second lens group are coaxial
  • the first lens group and the second lens group each include a plurality of lenses, and each lens includes an object side facing the object side and an image side facing the image side;
  • the first lens The second lens group has positive power, the second lens group has negative power;
  • the second lens group is axially movable relative to the first lens group, and the second lens group is relative to the first lens
  • the distance ⁇ d moved by the group satisfies: ⁇ d ⁇ 4mm.
  • the coaxial arrangement of the first lens group and the second lens group means that the optical axis of the first lens group and the optical axis of the second lens group are collinear.
  • the second lens group is moved accordingly to change the distance between the first lens group and the second lens group, thereby changing the focal length of the optical lens, thereby ensuring that under different usage scenarios , good shooting effects can be achieved by the optical lens of the present application.
  • the lens group is moved as a unit, the second lens group can move relative to the first lens group, and the distance between the lenses in a single lens group can remain unchanged, while the existing technology is that each lens can be move, so the distance between the lenses needs to be larger and the total optical length is longer.
  • the first lens group and the second lens group are arranged from the object side to the image side, that is, the arrangement order of "object side-first lens group-second lens group-image side".
  • the second lens group is located between the first lens group and the image side, that is, the second lens group is arranged within the range of the back focal length of the first lens group.
  • the total optical length of the optical lens of the present application can be short, so that the optical lens can be suitable for use in thin electronic devices.
  • the positive and negative powers of the first lens group and the second lens group are matched to achieve a better effect of eliminating aberrations, thereby achieving better optical effects.
  • the positive refractive power of the first lens group can condense the light from the outside, so that the light can be concentrated into the optical lens as much as possible.
  • the refractive power of the second lens group is negative refractive power, which can be used to expand the beam, thereby increasing the image height of the image formed on the photosensitive element, so that the optical lens can match the photosensitive element with a large incident angle of the chief ray , to improve the imaging resolution of the optical lens.
  • the distance ⁇ d that the second lens group can move relative to the first lens group satisfies: ⁇ d ⁇ 4mm, that is, the relative movement between the first lens group and the second lens group is between 0-
  • the change between 4mm can meet the needs of the optical lens in different shooting scenarios, so as to ensure that the optical lens can have a smaller total optical length in different application scenarios, so that the optical lens of the present application can be better applied to mobile phones etc. in thin electronic devices.
  • the relative movable distance between the first lens group and the second lens group is relatively small, the requirements for the driving structure for driving the movement of the second lens group 12 are relatively small, and the cost of the driving structure can be lower.
  • the volume of the driving structure can also be smaller, so that the optical lens can be more suitable for applications in miniaturized devices such as mobile phones.
  • the optical lens satisfies the following relationship:
  • TTL is the total optical length of the optical lens.
  • the total optical length of the optical lens of the present application is less than or equal to 25mm in different application scenarios (including long-distance and macro application scenarios), that is, the total optical length of the optical lens of the present application is equal to It can be smaller, so that it can be better applied to thin electronic devices such as mobile phones.
  • the optical lens satisfies the following relationship:
  • ⁇ d is the distance that the second lens group can move relative to the first lens group
  • TTL is the total optical length of the optical lens
  • the optical lens satisfies the above relationship, which can ensure that the optical lens can have a small total optical length in different usage scenarios, and at the same time ensure that when the optical lens is switched in different usage scenarios, the first lens group
  • the moving distance with the second lens group can be smaller, which further enables the optical lens to be better applied to thin electronic devices such as mobile phones.
  • the optical lens satisfies the following relationship:
  • F# is the aperture F value of the optical lens.
  • the aperture F value of an optical lens is the ratio of the focal length of the lens to the diameter of the lens aperture.
  • the lens diameter of the optical lens can ensure that the optical lens can have a suitable amount of incoming light, so that the optical lens can have a better optical imaging effect.
  • the focal length of the optical lens can meet the requirements of the optical lens for different application scenarios (including telephoto and macro shooting).
  • the lens aperture of the optical lens may be less than 20 mm.
  • the position of the first lens group is fixed, and the second lens group moves to be close to or away from the first lens group, so as to realize the relative movement between the second lens group and the first lens group, so as to ensure that the optical lens can be moved in different positions. It can shoot in different application scenarios, and can have a smaller total optical length.
  • the position of the first lens group is fixed, so as to ensure that the relative position between the first lens group and the light incident position (such as the light incident hole) remains unchanged, ensuring that under different application scenarios of the optical lens, The amount of incoming light entering the optical lens from the light incident position can remain unchanged. In other words, the amount of incoming light of the optical lens in different application scenarios can be guaranteed, thereby ensuring the shooting effect of the optical lens in different application scenarios.
  • the lenses of the first lens group include a first lens and a second lens arranged in sequence from the object side to the image side, the first lens has a positive refractive power, and the second lens has a negative refractive power
  • the combined refractive power of the other lenses of the first lens group except the first lens and the second lens is positive refractive power.
  • the combined refractive power of other lenses of the first lens group except the first lens and the second lens refers to the first lens group except the first lens and the second lens The optical power of the other lens as a whole.
  • the first lens group includes a first lens, a second lens, a third lens and a fourth lens
  • the power refers to the power of the third lens and the fourth lens as a whole.
  • the lenses of the first lens group include a first lens and a second lens arranged in sequence from the object side to the image side, the first lens has a positive refractive power, and the second lens has a negative light Power, the combined power of the other lenses in the first lens group except the first lens and the second lens is positive power, that is, the positive and negative power of each lens in the first lens group is matched , so that a better effect of correcting the phase difference can be achieved.
  • the first lens has a positive refractive power and has a light-gathering function, which can gather more light from the outside into the optical lens, and increase the amount of incoming light of the optical lens, so as to achieve a better photographing effect.
  • the lenses of the second lens group include a first lens arranged in sequence from the object side to the image side, the first lens is a meniscus lens, and the image side of the first lens is concave .
  • the first lens of the second lens group is a meniscus lens, that is, the object side of the first lens is convex, the image side is concave, or the object side of the first lens is It is concave, and the image side is convex.
  • the image side of the first lens is concave, and the object side of the first lens is convex, so that the first lens group can be transmitted to the second lens group.
  • the light spreads to a wider range, which plays a role in eliminating field curvature to a certain extent, so that the optical lens can have a better shooting effect.
  • the first lens group includes 3-4 lenses, and the second lens group includes 2-3 lenses.
  • the first lens group includes 3-4 lenses
  • the second lens group includes 2-3 lenses, which can ensure that the optical lens has good optical effects and at the same time reduce the total optical length of the optical lens as much as possible. In this way, the optical lens of this embodiment can be more suitable for use in thin electronic devices.
  • the optical lens satisfies the following relationship:
  • f1 is the focal length of the first lens group
  • f2 is the focal length of the second lens group.
  • the optical lens of the present application satisfies the above relationship, that is, the focal lengths of the first lens group and the second lens group of the optical lens can be reasonably allocated, so that the optical lens can have a good imaging effect.
  • of the ratio of the focal length of the first lens group to the focal length of the second lens group is less than 1, that is, the focal length of the first lens group of the optical lens is smaller than the focal length of the second lens group Focal length, the first lens group has stronger light adjustment ability than the second lens group, and the second lens group has less effect on light adjustment, thereby reducing the light to the optical lens when the second lens group moves between different positions
  • the difference in the adjustment effect ensures that when the second lens group is moved to adjust the focal length of the optical lens to achieve telephoto and macro shooting, the imaging effect of the optical lens can always be better.
  • the optical lens satisfies the following relationship:
  • f2 is the focal length of the second lens group
  • f is the focal length when the first lens group and the second lens group of the optical lens are closest to each other. The first lens group and the second lens group move relative to each other, and when the two lens groups are in contact, they are closest to each other.
  • the optical lens of the present application satisfies the above relationship, that is, the focal length of the second lens group of the optical lens can be reasonably allocated, so that when the second lens group is moved according to the actual use requirements of the optical lens, the focal length of the optical lens can be adaptively adjusted Adjust to meet the shooting needs of different scenes.
  • the second lens group can cooperate with the first lens group to correct the aberration of the optical lens, reduce the generation of distortion, and improve the imaging quality of the optical lens 10 .
  • the first lens group of the optical lens satisfies the following relationship:
  • f11 is the focal length of the first lens of the first lens group
  • f12 is the focal length of the second lens of the first lens group.
  • the optical lens of the present application satisfies the above relationship, that is, the focal lengths of the first lens and the second lens of the first lens group can be reasonably allocated, so that the optical lens can have a good imaging effect.
  • of the ratio of the focal length of the first lens of the first lens group to the focal length of the second lens is less than 1, that is, in some embodiments of the present application, the focal length of the first lens group is
  • the absolute value of the focal power of the first lens is smaller than the absolute value of the focal length of the second lens, that is, the first lens has better refractive power and can have a better light convergence effect, so as to gather more external light. into the optical lens, and increase the light input of the optical lens, so that the optical lens has a better imaging effect.
  • the second lens group of the optical lens satisfies the following relationship:
  • f21 is the focal length of the first lens of the second lens group
  • f2L is the focal length of the lens closest to the image side in the second lens group.
  • the optical lens of the present application satisfies the above relationship, that is, the focal lengths of the first lens of the second lens group and the lens closest to the image side can be reasonably allocated, so that the second lens group can have a better light adjustment effect, Therefore, the second lens group can achieve a better focal length adjustment effect, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens, ensuring that the optical lens can have better shooting under different usage requirements. Effect.
  • of the focal length ratio of the first lens of the second lens group and the lens closest to the image side is less than 1, that is, the focal length of the first lens of the second lens group
  • the absolute value is smaller than the absolute value of the focal length of the lens closest to the image side. Therefore, the degree of refraction of the first lens of the second lens group is higher. Therefore, the light incident from the first lens group and transmitted to the second lens group passes through the first lens group. After one lens, it can be adjusted as soon as possible, so as to ensure that the least number of lenses are used to achieve good adjustment in different usage scenarios, so as to ensure that the optical lens can have good imaging effects in different usage scenarios.
  • the second lens group of the optical lens satisfies the following relationship:
  • ⁇ is the ratio of the incident angle to the exit angle of the light on the second lens group
  • 1- ⁇ 2 is the focal length sensitivity of the second lens group
  • the focal length sensitivity determines the size of the control ability of light, and affects the focal length of the lens group.
  • the focal length sensitivity of the second lens group satisfies the above relationship, the focal length and light control ability of the second lens group are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens can It can achieve better imaging results in different usage scenarios.
  • the lens closest to the object side in the first lens group is made of glass, and the lens closest to the object side in the first lens group is a spherical lens.
  • At least one lens in the first lens group is a glass lens
  • the other lenses are glass lenses or plastic lenses. Since the relative temperature coefficient of refractive index of the glass lens is relatively low, that is, the degree of change of the refractive index of the glass lens with temperature is small, therefore, the optical lens of the present application has a temperature drift coefficient compared to the optical lens all using plastic lenses. will be greatly reduced.
  • the relationship between the refractive index of the glass lens and the temperature satisfies: dn/dT>0; the relationship between the refractive index of the plastic lens and the temperature satisfies: dn/dT ⁇ 0, when the temperature changes, the glass lens and the plastic Compensation occurs between the lenses to reduce the temperature drift of the optical lens.
  • the lens closest to the object side in the first lens group is generally the closest to the outside world, so it is most affected by the temperature. Therefore, setting it as a glass lens can minimize the impact of the optical lens. Warm drift.
  • the lens closest to the object side in the first lens group is a spherical lens, that is, a spherical lens can be used for a lens made of glass material. Compared with an aspherical lens, the processing of the lens could be simpler.
  • the plurality of lenses of the first lens group include at least 4 aspherical surfaces; the lenses of the second lens group are all aspherical lenses, thereby ensuring that each lens of the optical lens has more aspherical surfaces.
  • the surface of the lens can be arbitrarily designed according to requirements, thereby reducing the aberration and field curvature of the optical lens, so that the optical lens has better imaging effects.
  • the lenses of the first lens group except the lens closest to the object side are all aspherical lenses, and the lenses of the second lens group are also aspherical lenses, so as to ensure that each lens of the optical lens Both have a high degree of freedom, which can reduce optical problems such as better aberration, field curvature, etc., to ensure that the optical lens can have better imaging effects.
  • the optical lens further includes an optical path deflecting element, and the optical path deflecting element can change the transmission direction of the light.
  • the light path deflecting element is arranged on the side of the first lens element away from the second lens element, and the light passes through the first lens element and the second lens element in turn after being folded by the light path deflecting element out.
  • the optical lens may be a periscope lens, that is, the axial direction of the first lens group and the second lens group may be perpendicular to the thickness direction of the electronic device, so as to avoid the first lens group and the second lens group.
  • the light outside the electronic device can be incident into the optical lens along the thickness direction of the electronic device, and after being folded by the optical path deflecting element of the optical lens, it passes through the first lens assembly and the second lens assembly in turn, and then exits to the photosensitive lens. image on the component.
  • the axial direction of the optical lens can also be directly set to be the same as the thickness direction of the electronic device. , the light outside the electronic device does not need to enter the first lens group and the second lens group after being folded, that is, the optical lens may not have a light path deflecting element.
  • the present application further provides a camera module, the camera module includes a photosensitive element and the above-mentioned optical lens, the photosensitive element is located on the image side of the optical lens, and light is projected to the optical lens after passing through the optical lens.
  • the photosensitive element the distance between the first lens assembly and the photosensitive element remains unchanged, and the second lens assembly can move along the optical axis between the first lens assembly and the photosensitive element.
  • the optical image obtained after passing through the optical lens is converted into an electrical signal by the photosensitive element, and then subsequent steps such as image processing are performed, so that an image with better imaging quality can be obtained.
  • the distance between the first lens group and the photosensitive element of the optical lens of the present application remains unchanged, and the focal length of the optical lens is changed by moving the second lens group located between the first lens group and the photosensitive element, thereby ensuring In different usage scenarios, good shooting effects can be achieved by the optical lens of the present application.
  • the second lens group is arranged within the range of the back focal length of the first lens group, compared with the solution of adjusting the distance between the lenses of the optical lens to realize the change of the optical lens, the present application
  • the optical total length of the optical lens can be short, so that the optical lens can be suitable for thin electronic equipment.
  • the present application further provides an electronic device, the electronic device includes an image processor and the above-mentioned camera module, the image processor is connected to the camera module in communication, and the camera module is used for acquiring images data and input the image data into the image processor for processing the image data output therefrom.
  • the image data of the camera module is processed by an image processor, so as to obtain better captured pictures or images.
  • the optical lens of the present application can zoom in different usage scenarios, so that better imaging effects can be obtained under different usage requirements (telephoto shooting and macro shooting).
  • the total optical length of the optical lens of the present application can be relatively small, and therefore, the thickness restriction of the optical lens on the electronic device can be relatively small, that is, the electronic device can achieve a better thinning effect.
  • FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an electronic device according to another embodiment of the present application.
  • FIG. 3 is a schematic diagram of an imaging principle of the electronic device shown in FIG. 2 .
  • FIG. 4 is a schematic structural diagram of a camera module according to some embodiments of the present application.
  • FIG. 5 is a partial cross-sectional schematic diagram of the electronic device according to the embodiment of the present application shown in FIG. 1 cut along I-I.
  • FIG. 6 is a partial cross-sectional schematic diagram of an electronic device according to another embodiment of the present application cut along I-I in FIG. 1 .
  • FIG. 7a is a schematic structural diagram of the optical lens according to the first embodiment of the present application when it is used for long-distance shooting.
  • FIG. 7b is a schematic structural diagram of the optical lens according to the first embodiment of the present application when it is used for macro photography.
  • FIG. 8 is a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens according to the first embodiment of the present application.
  • FIG. 9 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens according to the first embodiment of the present application.
  • FIG. 10 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens according to the first embodiment of the present application.
  • FIG. 11a is a schematic structural diagram of the optical lens according to the second embodiment of the present application when it is used for long-distance shooting.
  • FIG. 11 b is a schematic structural diagram of the optical lens according to the second embodiment of the present application when it is used for macro photography.
  • FIG. 12 is a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens according to the second embodiment of the present application.
  • FIG. 13 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens according to the second embodiment of the present application.
  • FIG. 14 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens according to the second embodiment of the present application.
  • FIG. 15a is a schematic structural diagram of the optical lens according to the third embodiment of the present application when it is used for long-distance shooting.
  • FIG. 15b is a schematic structural diagram of the optical lens according to the third embodiment of the present application when it is used for macro photography.
  • FIG. 16 is a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens according to the third embodiment of the present application.
  • FIG. 17 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens according to the third embodiment of the present application.
  • FIG. 18 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens according to the third embodiment of the present application.
  • FIG. 19a is a schematic structural diagram of the optical lens according to the fourth embodiment of the present application when it is used for telephotography.
  • FIG. 19b is a schematic structural diagram of the optical lens according to the fourth embodiment of the present application when it is used for macro photography.
  • FIG. 20 is a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens according to the fourth embodiment of the present application.
  • FIG. 21 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens according to the fourth embodiment of the present application.
  • FIG. 22 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens according to the fourth embodiment of the present application.
  • FIG. 23a is a schematic structural diagram of the optical lens according to the fifth embodiment of the present application when it is used for telephoto shooting.
  • FIG. 23b is a schematic structural diagram of the optical lens according to the fifth embodiment of the present application when it is used for macro photography.
  • FIG. 24 is a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens according to the fifth embodiment of the present application.
  • FIG. 25 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens according to the fifth embodiment of the present application.
  • FIG. 26 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens according to the fifth embodiment of the present application.
  • FIG. 27a is a schematic structural diagram of the optical lens according to the sixth embodiment of the present application when it is used for telephoto shooting.
  • 27b is a schematic structural diagram of the optical lens according to the sixth embodiment of the present application when it is used for macro photography.
  • FIG. 28 is a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens according to the sixth embodiment of the present application.
  • FIG. 29 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens according to the sixth embodiment of the present application.
  • FIG. 30 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens according to the sixth embodiment of the present application.
  • FIG. 31a is a schematic structural diagram of the optical lens according to the seventh embodiment of the present application when it is used for telephoto shooting.
  • FIG. 31b is a schematic structural diagram of the optical lens according to the seventh embodiment of the present application when it is used for macro photography.
  • FIG. 32 is a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens according to the seventh embodiment of the present application.
  • FIG. 33 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens according to the seventh embodiment of the present application.
  • FIG. 34 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens according to the seventh embodiment of the present application.
  • Focal length (focal length, f for short), also known as focal length, is a measure of the concentration or divergence of light in an optical system. The vertical distance from the optical center of the lens group to the focal plane.
  • Aperture is a device used to control the amount of light passing through the lens to the photosensitive element.
  • the aperture size is expressed in F-number/F-number.
  • Aperture F value (F#) is the relative value (reciprocal of relative aperture) derived from the focal length of the lens/the lens clear diameter. The smaller the aperture F value is, the more light will enter in the same unit time; the larger the aperture F value, the smaller the depth of field, and the background content of the photo will be blurred.
  • Positive refractive power also known as positive refractive power, means that the lens has a positive focal length and has the effect of converging light.
  • Negative refractive power also known as negative refractive power, means that the lens has a negative focal length and has the effect of diverging light.
  • the total track length (TTL) which refers to the total length from the end of the optical lens away from the imaging surface to the imaging surface, is the main factor forming the thickness of the electronic device.
  • the total optical length refers to the distance from the object side of the first lens of the first lens group to the photosensitive element on the optical axis of the optical lens.
  • Imaging plane Imaging refers to the real image projected on the light screen by the light refracted, diffracted or propagating straight through the small hole, and the imaging plane refers to the plane where the imaging is located.
  • Abbe number namely dispersion coefficient
  • dispersion coefficient is the difference ratio of refractive index of optical material at different wavelengths, which represents the degree of material dispersion.
  • Half image height (image height, IH), that is, the radius of the imaging circle.
  • the optical axis an imaginary line that defines how the optical system conducts light, is generally the light that passes vertically through the center of the lens.
  • Object side with the optical lens as the boundary, the side where the scene is located is the object side.
  • the side where the image of the scene is located is the image side.
  • Object side the surface of the lens facing the object side is called the object side.
  • Image side the surface of the lens facing the image side is called the image side.
  • the back focal length (BFL) is the on-axis distance from the image side of the lens closest to the image side of the optical lens to the imaging surface.
  • Distortion is the difference between where points in an image actually appear and where they would be in an ideal system.
  • the field of view refers to the angle formed by the lens of the optical instrument as the vertex and the angle formed by the two edges of the maximum range that the object image of the object to be measured can pass through the lens.
  • a free-form surface refers to a surface that cannot be composed of elementary analytical surfaces, but is composed of curved surfaces that change freely in complex ways, the so-called free-form curved surfaces.
  • the present application provides an electronic device, which can be a mobile phone, a tablet, a computer, a video camera, a camera, or other electronic device with a photographing or video recording function.
  • FIG. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present application.
  • the electronic device 1000 is a mobile phone.
  • the electronic device 1000 may be a device with a photographing function in other forms, such as a tablet or a camera.
  • the electronic device 1000 may include a camera module 100 and an image processor 200 communicatively connected to the camera module 100 .
  • the camera module 100 is used for acquiring image data and inputting the image data into the image processor 200 so that the image processor 200 can process the image data.
  • the communication connection between the camera module 100 and the image processor 200 may include data transmission through electrical connection such as wiring connection, or may also be realized through optical cable connection or wireless transmission and other methods capable of data transmission.
  • the image processor 200 can perform optimal processing on the digital image signal through a series of complex mathematical algorithm operations, and finally transmit the processed signal to the display or store it in the memory.
  • the image processor 200 may be an image processing chip or a digital signal processing (digital signal processing, DSP) chip.
  • the camera module 100 can be disposed on the back of the electronic device 1000 , and is a rear camera of the electronic device 1000 .
  • the electronic device 1000 includes a rear cover 1001 , and a light entrance hole 1002 is formed on the rear cover 1001 .
  • the installation position of the camera module 100 of the electronic device 1000 in the embodiment shown in FIG. 1 is only schematic. In some other embodiments, the camera module 100 may also be installed at other positions on the electronic device 1000 .
  • the camera module 100 can be installed on the front of the electronic device 1000 as a front camera of the electronic device 1000 .
  • the camera module 100 can be installed in the upper middle or upper right corner of the back of the electronic device 1000; alternatively, the camera module 100 can also be installed not on the main body of the mobile phone, but on a movable or rotatable part relative to the mobile phone, such as The part can be extended, retracted or rotated from the main body of the mobile phone.
  • This application does not make any limitation on the installation position of the camera module 100 .
  • FIG. 2 is a schematic structural diagram of an electronic device 1000 according to another embodiment of the present application.
  • the camera module 100 , the light entrance hole 1002 and the optical lens 10 in FIG. 2 are the same as those in FIG. 1 , and will not be repeated here.
  • the electronic device 1000 further includes an analog-to-digital converter (DAC) 300 .
  • DAC analog-to-digital converter
  • the analog-to-digital converter 300 is connected between the camera module 100 and the image processor 200 .
  • the analog-to-digital converter 300 is used to convert the analog image signal generated by the camera module 100 into a digital image signal and transmit it to the image processor 200, and then process the digital image signal through the image processor 200, and finally through the display screen or display. Image or video display.
  • the electronic device 1000 may further include a memory 400, and the memory 400 is connected in communication with the image processor 200. After the image processor 200 processes the digital signal of the image, the image is transmitted to the memory 400 for subsequent viewing. Images can be retrieved from storage at any time and displayed on the display (see Figure 2). In some embodiments, the image processor 200 further compresses the processed image digital signal and stores it in the memory 400 to save the space of the memory 400 . It should be noted that FIG. 2 is only a schematic structural diagram of an embodiment of the present application, and the positions and structures of the camera module 100 , the image processor 200 , the analog-to-digital converter 300 , and the memory 400 shown therein are merely schematic.
  • FIG. 3 is a schematic diagram of an imaging principle of the electronic device 1000 shown in FIG. 2 .
  • the camera module 100 includes an optical lens 10 and a photosensitive element 20 .
  • the photosensitive element 20 is located on the image side of the optical lens 10 .
  • the image side of the optical lens 10 refers to the imaging side of the optical lens 10 close to the scene.
  • the camera module 100 is working, the scene is imaged on the photosensitive element 20 through the optical lens 10 .
  • the working principle of the camera module 100 is as follows: the light L reflected by the scene generates an optical image through the optical lens 10 and projects it onto the surface of the photosensitive element 20, and the photosensitive element 20 converts the optical image into an electrical signal, that is, an analog image signal S1 and sends it to the surface of the photosensitive element 20.
  • the converted analog image signal S1 is transmitted to the analog-to-digital converter 300 to be converted into a digital image signal S2 by the analog-to-digital converter 300 to the image processor 200 .
  • the photosensitive element 20 is a semiconductor device, and the surface may contain hundreds of thousands to millions of photodiodes. When irradiated by light, electric charges will be generated, thereby completing the conversion of optical signals into electrical signals.
  • the photosensitive element 20 can be any device capable of converting optical signals into electrical signals.
  • the photosensitive element 20 may be a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS).
  • the optical lens 10 affects the imaging quality and imaging effect.
  • the optical lens 10 includes a plurality of lenses arranged from the object side to the image side, which mainly use the refraction principle of the lenses to perform imaging. Specifically, the light of the object to be imaged forms a clear image on the focal plane through the optical lens 10, and records the image of the scene through the photosensitive element 20 located on the imaging plane. Adjacent lenses may be spaced, or they may be closely arranged. The main functions of each lens are different, and the best image quality can be obtained through the cooperation between different lenses.
  • the optical lens 10 further includes a filter 30 for correcting color deviation, and the filter 30 is located between the photosensitive element 20 and the lens of the optical lens 10 .
  • the light refracted by each lens of the optical lens 10 is irradiated on the filter 30 and transmitted to the photosensitive element 20 through the filter 30 .
  • the light filter 30 can filter out unnecessary light projected on the photosensitive element 20, prevent the photosensitive element 20 from producing false colors or ripples, so as to improve its effective resolution and color reproduction, and can prevent some specific light from the outside from affecting the photosensitive element. 20 damage, protect the photosensitive element 20.
  • the optical lens 10 may also include a protection element for protecting the photosensitive element 20 , and the protection element is located between the photosensitive element 20 and the lens of the optical lens 10 .
  • the light refracted by each lens of the optical lens 10 is irradiated on the protective element, and the protective element can filter the specific light rays that cause damage to the photosensitive element 20 in the light, so as to avoid the damage to the photosensitive element 20 caused by some specific light from the outside, and protect the photosensitive element 20 Photosensitive element 20 .
  • the optical filter 30 and the protective element of the present application are all flat plate structures, which will not affect the transmission direction of the light, so that the influence of the optical filter 30 and the protective element on the imaging effect can be avoided.
  • the camera module 100 may include multiple optical lenses 10, and the multiple optical lenses 10 may be suitable for different usage scenarios, thereby ensuring that the camera module 100 can be used in different It can have better shooting effect in all scenarios.
  • the camera module 100 may include an optical lens suitable for nighttime shooting, an optical lens suitable for long-distance shooting, an optical lens suitable for wide-angle shooting, and the like.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 arranged from the object side to the image side, and the first lens group 11 and the second lens group 12 are coaxial set up.
  • the coaxial arrangement of the first lens group 11 and the second lens group 12 means that the optical axis of the first lens group 11 and the optical axis of the second lens group 12 are collinear.
  • the light outside the electronic device 1000 is incident through the light incident hole 1002 and then enters and is refracted by the first lens group 11 and the second lens group 12 in turn, and then irradiated onto the photosensitive element 20 for imaging.
  • Both the first lens group 11 and the second lens group 12 include multiple lenses.
  • the position of the first lens group 11 is fixed, that is, the relative position of the first lens group 11 and the photosensitive element 20 remains unchanged, and the second lens group 12 can move relative to the first lens group 11 along the direction of its optical axis .
  • the corresponding movement of the second lens group 12 can change the distance between the first lens group 11 and the second lens group 12, thereby changing the focal length of the optical lens 10, thereby ensuring that the Under different usage scenarios, the optical lens 10 of the present application can achieve good shooting effects.
  • the optical lens 10 may be in a telephoto state and a macro shot state. When the second lens group 12 moves relative to the first lens group 11 , the optical lens 10 switches between the telephoto state and the macro state.
  • the second lens group 12 moves to be close to the first lens group 11 to adjust the focal length of the optical lens 10, thereby ensuring a better telephoto effect; the optical lens 10 In the macro shooting state, the second lens group 12 moves away from the first lens group 11 to adjust the focal length of the optical lens 10, thereby ensuring a better telephoto effect.
  • the electronic device 1000 may further include a driving structure connected to the second lens group 12, so as to drive the second lens group 12 to move through the driving structure, thereby changing the first lens group 11 and the second lens group distance between 12.
  • the drive structure may be a micro-motor.
  • the second lens group 12 is arranged within the range of the back focal length of the first lens group 11. Compared with the solution of adjusting the distance between the lenses of the optical lens 10 to realize the change of the optical lens 10, Since the lenses included in the first lens group 11 of the optical lens 10 of the present application do not need to be moved, the distance between the lenses of the first lens group 11 can be relatively small. Similarly, since the lenses included in the second lens group 12 of the optical lens 10 of the present application do not need to be moved, the distance between the lenses of the second lens group 12 can be small, thereby making the optical lens 10 The total optical length TTL can be short, so that the optical lens 10 can be used in a thin electronic device 1000 .
  • the total optical length TTL in the embodiment of the present application refers to the distance from the object side of the first lens of the first lens group 11 to the photosensitive element 20 on the optical axis of the optical lens 10 .
  • the total optical length TTL of the optical lens 10 may be less than 25 mm, which can be applied to thin electronic devices 1000 such as mobile phones and tablets.
  • the position of the first lens group 11 is fixed, that is, the distance between the first lens group 11 of the optical lens 10 and the light entrance hole 1002 remains unchanged, thereby ensuring that the optical lens 10 can be used in different application scenarios
  • the amount of incident light entering the optical lens 10 from the light entrance hole 1002 can remain unchanged. In other words, the amount of light entering the optical lens 10 in different application scenarios can be guaranteed, thereby ensuring the shooting of the optical lens 10 in different application scenarios. Effect.
  • the first lens group 11 of the optical lens 10 can also be moved, so that the optical lens 10 can be adapted to different situations through the coordinated movement of the first lens group 11 and the second lens group 12
  • the requirements of different application scenarios ensure that the optical lens 10 can have better shooting effects in different application scenarios.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 satisfies: ⁇ d ⁇ 4mm, that is, the relative distance between the first lens group 11 and the second lens group 12 Changing the movement between 0-4mm can meet the needs of the optical lens 10 in different shooting scenarios, thereby ensuring that the optical lens 10 can have a small total optical length in different application scenarios, so that the optical lens 10 of the present application can have a smaller total optical length. It can be better applied to thin electronic devices such as mobile phones.
  • the relative movable distance between the first lens group 11 and the second lens group 12 is relatively small, the requirement for the driving structure for driving the second lens group 12 to move is relatively small, and the cost of the driving structure can be lower.
  • the volume of the driving structure can also be smaller, so that the optical lens can be more suitable for applications in miniaturized devices such as mobile phones.
  • the optical lens 10 may also satisfy 0 ⁇ d/TTL ⁇ 0.25.
  • ⁇ d is the distance that the second lens group 12 can move relative to the first lens group 11
  • TTL is the total optical length of the optical lens 10 . Since the value of TTL in the present application is small, when ⁇ d/TTL meets the above range, ⁇ d will be small, and the moving distance between the first lens group 11 and the second lens group 12 can be small. Therefore, it can be ensured that the optical lens 10 can have a smaller total optical length in different usage scenarios, and at the same time, it can be ensured that when the optical lens 10 is switched in different usage scenarios, the distance between the first lens group 11 and the second lens group 12 is guaranteed.
  • the moving distance can be smaller, which further enables the optical lens 10 to be better applied to thin electronic devices such as mobile phones.
  • FIG. 4 is a schematic structural diagram of a camera module 100 according to some embodiments of the present application.
  • the optical lens 10 further includes a first lens barrel 10 a and a second lens barrel 10 b , the second lens barrel 10 b is installed in the first lens barrel 10 a , and the second lens barrel 10 b It can move in the axial direction of the first lens barrel 10a within the first lens barrel 10a.
  • the first lens barrel 10a and the second lens barrel 10b are coaxially disposed, that is, the central axis of the first lens barrel 10a and the central axis of the second lens barrel 10b are collinear.
  • the multiple lenses of the first lens group 11 of the optical lens 10 are fixed in the first lens barrel 10a, and the multiple lenses of the first lens group 11 are coaxially arranged; the multiple lenses of the second lens group 12 of the optical lens 10 are fixed In the lens barrel 10a and fixed in the second lens barrel 10b, the plurality of lenses of the second lens group 12 are coaxially arranged.
  • the second lens barrel 10b moves along the axial direction of the first lens barrel 10a in the first lens barrel 10a, and can drive the second lens group 12 fixed in the second lens barrel 10b to move relative to the first lens group 11.
  • the optical lens 10 may also have other structures to realize the movement of the second lens group 12 relative to the first lens group 11 , which is not specifically limited in the present application.
  • the camera module 100 further includes structures such as the circuit board 50 .
  • the circuit board 50 is fixed to the side of the first lens barrel 10a facing the image side.
  • the circuit board 50 is used to transmit electrical signals.
  • the circuit board 50 may be a flexible printed circuit (FPC) or a printed circuit board (PCB), wherein the FPC may be a single-sided flexible board, a double-sided flexible board, a multi-layer flexible board or a hybrid structure Flexible circuit boards, etc.
  • FPC flexible printed circuit
  • PCB printed circuit board
  • the filter 30 or the protection element can be fixed on the end of the first lens barrel 10a of the optical lens 10 facing the image side, and located between the second lens barrel 10b and the circuit board 50; or, it can also be supported and fixed on the circuit board by a bracket above 50.
  • the photosensitive element 20 is fixed on the side of the circuit board 50 facing the first lens barrel 10a by bonding or patching. .
  • the analog-to-digital converter 300 , the image processor 200 , the memory 400 , etc. are also integrated on the circuit board 50 by bonding or patching, so that the photosensitive element 20 and the analog-to-digital converter 300 are implemented through the circuit board 50 . , a communication connection between the image processor 200, the memory 400, and the like.
  • the first lens group 11 and the second lens group 12 of the optical lens 10 include multiple lenses, and any lens of the optical lens 10 may have positive refractive power or negative refractive power so as to ensure that each lens can have a certain optical effect, so as to ensure that the optical effect required by the optical lens 10 is achieved, and at the same time, the number of lenses of the optical lens 10 is reduced as much as possible, and the total optical length of the optical lens 10 is reduced as much as possible. , so that the miniaturization of the optical lens 10 is realized, the volume occupied by the optical lens 10 when installed in the electronic device 1000 is small, and the influence of the optical lens 10 on the thickness of the terminal is reduced.
  • the flat mirror When a flat mirror is inserted between a plurality of lenses, the flat mirror does not count as a lens of the optical lens 10 of the present application. For example, when a flat mirror is inserted between the first lens group 11 and the second lens group 12, the flat mirror cannot be counted as a lens of the optical lens 10 of the embodiment of the present application.
  • the focal length of the optical lens 10 is adjusted, so that the optical lens 10 can Meet different application scenarios (such as telephoto and macro shooting).
  • the distance between the first lens group 11 and the second lens group 12 of the optical lens 10 is the closest; when the optical lens 10 is in the macro shooting state, The distance between the first lens group 11 and the second lens group 12 of the optical lens 10 is the farthest.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power.
  • the second lens group 12 has a negative refractive power, which can play a role in diffusing light, so as to ensure that the optical lens 10 has a large image height, so that the optical lens 10 can match the large principal ray
  • the photosensitive element 20 of the incident angle improves the imaging resolution of the optical lens 10 .
  • the first lens group 11 includes 3-4 lenses
  • the second lens group 12 includes 2-3 lenses.
  • the first lens group 11 includes 3-4 lenses
  • the second lens group 12 includes 2-3 lenses, which can ensure that the optical lens 10 has a good optical effect while minimizing the size of the optical lens 10 , so that the optical lens 10 of this embodiment can be more suitable for use in a thin electronic device 1000 .
  • the number of lenses included in the first lens group 11 may also be 2 or more than 3, or the number of lenses in the second lens group 12 may also be more than 3, but The total optical length of the optical lens 10 may be increased, thereby affecting the thickness and other dimensions of the electronic device 1000 .
  • the optical lens 10 satisfies the relation: TTL ⁇ 25mm.
  • the TTL is the total optical length of the optical lens 10 .
  • the optical lens 10 has a small total optical length and a small occupied volume, so that it can be adapted to a thin electronic device 1000 such as a mobile phone.
  • the lenses of the first lens group 11 include a first lens 111 and a second lens 112 arranged in sequence from the object side to the image side, the first lens 111 has positive refractive power, and the second lens 112 has negative light power.
  • the combined refractive power of other lenses in the first lens group 11 except the first lens 111 and the second lens 112 is positive refractive power.
  • the first lens group 11 includes three lenses, and the other lenses except the first lens 111 and the second lens 112 are the third lens 113 . Therefore, the third lens 113 has positive light power.
  • the first lens group 11 includes four lenses, and the other lenses except the first lens 111 and the second lens 112 are the third lens 113 and the fourth lens. Therefore, the third lens 113 The combined power with the fourth lens is positive power.
  • the first lens 111 has a positive refractive power
  • the second lens 112 has a negative refractive power
  • the combined refractive power of the other lenses of the first lens group 11 except the first lens 111 and the second lens 112 is positive light
  • the power that is, the positive and negative matching of the power of each lens of the first lens group 11, so that a better effect of correcting the aberration can be achieved.
  • the first lens 111 has a positive refractive power and has a light condensing function, which can condense more light from the outside into the optical lens 10 to increase the amount of incoming light of the optical lens 10 to achieve a better photographing effect.
  • the relational expression of the optical lens 10 is satisfied: F# ⁇ 2.
  • F# is the aperture F value of the optical lens 10 .
  • the aperture F value of the optical lens 10 can satisfy the above relationship, and the optical lens 10 can have a lens aperture of a suitable size, so as to ensure that the optical lens 10 can have a suitable amount of incoming light, so that the optical lens 10 can have better optical imaging effect.
  • the lens aperture of the optical lens may be less than 20 mm.
  • the aperture F value of the optical lens 10 is the ratio of the focal length of the optical lens 10 to the diameter of the lens aperture, when the aperture F value of the optical lens 10 satisfies the above relationship, the lens aperture of the optical lens 10 can satisfy the incident light amount of the optical lens 10 At the same time, the focal length of the optical lens 10 can meet the requirements of the optical lens 10 for different application scenarios (including long-distance shooting and macro shooting).
  • the lenses of the second lens group 12 include a first lens 121 arranged in sequence from the object side to the image side, the first lens 121 is a meniscus lens, that is, the object side and the image side of the first lens 121
  • the curvatures are either positive or negative.
  • the object side of the first lens 121 is convex and the image side is concave, or the object side of the first lens 121 is concave and the image side is convex.
  • the image side of the first lens 121 is concave, which can spread the light transmitted through the first lens group 11 to the second lens group 12 to a wider range, and play a certain elimination field. Therefore, the optical lens 10 can have a better shooting effect.
  • the image side surface of the first lens 121 may also be a convex surface.
  • the optical lens 10 satisfies the relation: 0.4 ⁇
  • f1 is the focal length of the first lens group 11
  • f2 is the focal length of the second lens group 12 .
  • the first lens group 11 and the second lens group 12 of the present application satisfy the above relationship, that is, the focal lengths of the first lens group 11 and the second lens group 12 of the optical lens 10 can be reasonably allocated, so that the optical lens 10 can have Good imaging results.
  • of the ratio of the focal length of the first lens group 11 to the focal length of the second lens group 12 is less than 1, that is, the focal length of the first lens group 11 is smaller than that of the second lens group 12
  • the refractive power of the first lens group 11 is stronger than that of the second lens group 12
  • the light adjustment ability of the first lens group 11 is stronger than that of the second lens group 12
  • the second lens group 12 has less effect on light adjustment
  • the optical lens 10 satisfies the relation: 0.4 ⁇
  • f2 is the focal length of the second lens group 12
  • f is the focal length of the optical lens 10 in the telephoto state.
  • the distance between the first lens group 11 and the second lens group 12 is the closest.
  • the optical lens 10 of the present application satisfies the above relationship, that is, the focal length of the second lens group 12 of the optical lens 10 can be reasonably allocated, so that when the second lens group is moved according to the actual use requirements of the optical lens 10, the focal length of the optical lens 10 It can be adaptively adjusted to meet the shooting needs of different scenes.
  • the first lens group 11 of the optical lens 10 satisfies the relationship: 0.2 ⁇
  • f11 is the focal length of the first lens 111 of the first lens group 11
  • f12 is the focal length of the second lens 112 of the first lens group 11 .
  • the first lens 111 and the second lens 112 of the first lens group 11 of the present application satisfy the above relationship, that is, the focal lengths of the first lens 111 and the second lens 112 of the first lens group 11 can be reasonably allocated, so that the The optical lens 10 can have a good imaging effect.
  • of the ratio of the focal length of the first lens of the first lens group to the focal length of the second lens is less than 1, that is, in the embodiments of the present application, the focal length of the first lens 111
  • the absolute value of the degree is smaller than the absolute value of the focal length of the second lens 112 , that is, the first lens 111 can have a better ability, and can have a better light converging effect, so as to gather more external light into the optical lens 10 . , to increase the incident light amount of the optical lens 10, so that the optical lens 10 has a better imaging effect.
  • the second lens group 12 of the optical lens 10 satisfies the relationship:
  • f21 is the focal length of the first lens 121 of the second lens group 12
  • f2L is the focal length of the lens closest to the image side in the second lens group 12 .
  • the second lens group 12 includes two lenses, and the two lenses are the first lens 121 and the second lens 122 sequentially arranged from the object side to the image side. Therefore, the second lens group 12 The lens closest to the image side is the second lens 122 .
  • the second lens group 12 may include three lenses, and the three lenses are a first lens 121, a second lens 122, and a third lens 123 ( Not shown in the figure), therefore, the lens closest to the image side in the second lens group 12 is the third lens 123 .
  • the optical lens 10 of the present application satisfies the above relationship, that is, the focal lengths of the first lens 121 of the second lens group 12 and the lens closest to the image side can be reasonably allocated, so that the second lens group 12 can have better Light adjustment effect, so that the second lens group 12 can achieve a better focal length adjustment effect, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, ensuring that the optical lens 10 is used in different needs. Can have better shooting effect.
  • of the focal length ratio of the first lens 121 of the second lens group 12 and the lens closest to the image side is less than 1, that is, the first lens of the second lens group 12
  • the absolute value of the focal length of the lens 121 is smaller than the absolute value of the focal length of the lens closest to the image side. Therefore, the degree of refraction of the first lens 121 of the second lens group 12 is relatively high.
  • the light of the second lens group 12 can be adjusted as soon as possible after passing through the first lens 121, so as to ensure that the optical lens 10 can be well adjusted under different usage scenarios by using as few lenses as possible. Can have a good imaging effect.
  • the second lens group 12 of the optical lens 10 satisfies the relationship: 1.4 ⁇
  • ⁇ is the ratio of the incident angle to the exit angle of the light on the second lens group 12
  • 1 ⁇ 2 is the focal length sensitivity of the second lens group 12 .
  • the focal length sensitivity determines the size of the control ability of light, and affects the focal length of the lens group.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical The lens 10 can achieve better imaging effects in different usage scenarios.
  • At least one lens in the first lens group 11 is a glass lens, and the other lenses are glass lenses or plastic lenses. Since the relative temperature coefficient of refractive index of the glass lens is relatively low, that is, the degree of change of the refractive index of the glass lens with temperature is small, therefore, the optical lens 10 of the present application has a higher temperature than the optical lens 10 using all plastic lenses. Drift coefficient will be greatly reduced. And, generally speaking, the relationship between the refractive index of the glass lens and the temperature satisfies: dn/dT>0, where dn refers to the change value of the refractive index, and dT refers to the ratio of the temperature change value; the refractive index of the plastic lens changes with temperature.
  • the lens closest to the object side in the first lens group 11 is a glass lens. Since the lens closest to the object side in the first lens group 11 is generally the closest to the outside world, it is affected by The influence of temperature is the greatest. Therefore, setting it as a glass lens can minimize the temperature drift of the optical lens 10 .
  • the multiple lenses of the first lens group 11 include at least 4 aspherical lenses, and the lenses of the second lens group 12 are all aspherical lenses, thereby ensuring that each lens of the optical lens 10 has a higher surface freedom.
  • the surface of the lens can be arbitrarily designed according to requirements, thereby reducing problems such as aberration and field curvature of the optical lens 10, so that the optical lens 10 has a better imaging effect.
  • the lens closest to the object side in the first lens group 11 ie, the first lens 111
  • the other lenses are aspherical lenses.
  • the glass lens is difficult to process.
  • the processing of the lens is difficult. could be simpler.
  • other lenses of the first lens group 11 except the first lens 121 may also be glass lenses, so as to further reduce the temperature drift of the optical lens 10 .
  • the surface of the glass lens included in the first lens group 11 can also be aspherical to increase the degree of freedom of the surface of the lens, so that the surface of the lens can be arbitrarily designed according to requirements, thereby reducing the aberration and field of the optical lens 10. Therefore, the optical lens 10 has better imaging effect.
  • the object side surface and the image side surface of the lens may also be spherical on one side and aspherical on the other side.
  • FIG. 5 is a schematic partial cross-sectional view of the electronic device 1000 of the embodiment shown in FIG. 1 cut along I-I.
  • the axial direction of the optical lens 10 is the same as the thickness direction of the electronic device 1000 (ie, the Z-axis direction in the figure), and the optical lens 10 is on the electronic device 1000 .
  • the light outside the electronic device 1000 enters the optical lens 10 through the light incident hole 1002 , and then exits the optical lens 10 to the photosensitive element 20 for imaging.
  • the axial direction of the optical lens 10 is the same as the axial direction of the first lens group 11 and the second lens group 12 .
  • the overall optical length of the optical lens 10 affects the thickness of the electronic device 1000 .
  • the thickness of the electronic device 1000 can be relatively thin, thereby realizing the thinning of the electronic device 1000 .
  • FIG. 6 is a schematic partial cross-sectional view of the electronic device 1000 according to another embodiment of the present application cut along I-I in FIG. 1 .
  • the optical lens 10 may be a periscope lens, that is, the axial directions of the first lens group 11 and the second lens group 12 may be perpendicular to the thickness direction of the electronic device 1000 (the Z-axis direction in the figure), so that The influence of the on-axis distance of the first lens group 11 and the second lens group 12 on the thickness of the electronic device 1000 is avoided.
  • the axial direction of the first lens group 11 and the second lens group 12 is the X direction in the figure.
  • the optical lens 10 further includes an optical path deflecting element 40, and the optical path deflecting element 40 can change the transmission direction of light.
  • the optical path deflecting element 40 is disposed on the side of the first lens group 11 away from the second lens group 12 and opposite to the light incident hole 1002 on the electronic device 1000 .
  • the optical lens 10 includes the light outside the electronic device 1000 and can be incident into the optical lens 10 through the light entrance hole 1002 along the thickness direction of the electronic device 1000, and then passes through the first lens group 11 after being folded by the optical path deflecting element 40 of the optical lens 10. After the pieces and the second lens group 12 pieces, it is output to the photosensitive element 20 for imaging.
  • the optical path deflecting element 40 may be a prism, a reflector, or the like. It can be understood that, in some embodiments of the present application, a lens may also be arranged between the optical path deflecting element 40 and the light incident hole 1002 on the electronic device 1000 to further improve the imaging effect of the optical lens 10 .
  • the distance between the first lens group 11 and the second lens group 12 is changed by correspondingly moving the second lens group 12 in different usage scenarios (including telephoto shooting scenes and macro shooting scenes). , so as to change the focal length of the optical lens 10, thereby ensuring that in different usage scenarios, the optical lens 10 of the present application can achieve a good shooting effect.
  • the second lens group 12 is arranged within the range of the back focal length of the first lens group 11 , compared with the solution of adjusting the distance between the lenses of the optical lens 10 to realize the change of the optical lens 10 .
  • the total optical length of the optical lens 10 of the present application can be short, so that the optical lens 10 can be used in a thin electronic device 1000 .
  • the number of lenses is controlled so that the aperture, focal length, thickness, refractive index, and total optical length of the optical lens 10 cooperate together, so as to ensure that the optical lens 10 can have good imaging effects in different application scenarios, while satisfying the optical
  • the requirement of a compact system structure makes the optical lens 10 smaller in size and can be better applied to the small electronic device 1000 .
  • FIG. 7a shows a schematic structural diagram of the optical lens 10 according to the first embodiment of the present application when it is used for long-distance shooting
  • FIG. 7b shows the optical lens 10 according to the first embodiment of the present application used for Schematic diagram of the structure during macro shooting.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 which are arranged in sequence from the object side to the image side.
  • the first lens group 11 has three lenses, which are a first lens 111, a second lens 112, and a third lens 113.
  • the first lens 111, the second lens 112, and the third lens 113 are arranged in sequence from the object side to the image side. .
  • the second lens group 12 has two lenses, namely a first lens 121 and a second lens 122.
  • the first lens 121 and the second lens 122 are arranged in sequence from the object side to the image side.
  • the first lens 111 , the second lens 112 , the third lens 113 , the first lens 121 and the second lens 122 are arranged coaxially.
  • the axial direction of the first lens group 11 is the optical axis direction of the first lens 111 , the second lens 112 , and the third lens 113
  • the axial direction of the second lens group 12 is the first lens 121 , the second lens 112 , and the third lens 113 .
  • the lens of the second lens 122, the first lens group 11 and the second lens group 12 are coaxial.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power.
  • the first lens 111 of the first lens group 11 has positive refractive power
  • the second lens 112 has negative refractive power
  • the third lens 113 has positive refractive power.
  • the first lens 121 of the second lens group 12 has positive refractive power
  • the second lens 122 has negative refractive power.
  • the first lens 121 of the second lens group 12 is a meniscus lens, and the image side surface of the first lens 121 is a concave surface.
  • the first lens 111 of the first lens group 11 is made of glass.
  • the object side and the image side of the first lens 111 of the first lens group 11 are spherical surfaces, and the object side and the image side of the second lens 112 and the third lens 113 are high-order aspheric surfaces.
  • the object side surface and the image side surface of the first lens 121 and the second lens 122 of the second lens group 12 are both high-order aspheric surfaces.
  • S11 represents the object side of the first lens 111
  • S12 represents the image side of the first lens 111
  • S13 represents the object side of the second lens 112
  • S14 represents the image side of the second lens 112
  • S15 represents the object of the third lens 113 Side
  • S16 represents the image side of the third lens 113
  • S21 represents the object side of the first lens 121
  • S22 represents the image side of the first lens 121
  • S23 represents the object side of the second lens 122
  • S24 represents the second lens
  • S31 represents the object side of the filter 30
  • S32 represents the image side of the filter 30 .
  • the thickness d1 represents the thickness of each lens of the optical lens 10 and the distance between the lenses when the optical lens 10 is in a telephoto state.
  • d1/S11 represents the thickness of the first lens 111 when the optical lens 10 is in the telephoto state
  • d1/S12 represents the image side of the first lens 111 to the second lens 112 when the optical lens 10 is in the telephoto state
  • d1/S13 represents the thickness of the second lens 112 when the optical lens 10 is in the telephoto state
  • d1/S14 represents the image side of the second lens 112 when the optical lens 10 is in the telephoto state
  • the distance to the object side of the third lens 113 d1/S15 represents the thickness of the third lens 113 when the optical lens 10 is in the telephoto state
  • d1/S16 represents the third lens 113 when the optical lens 10 is in the telephoto state.
  • d1/S21 represents the thickness of the first lens 121 when the optical lens 10 is in the telephoto state
  • d1/S22 represents the optical lens 10 in the telephoto state
  • d1/S23 represents the thickness of the second lens 122 when the optical lens 10 is in the telephoto state
  • d1 /S24 represents the distance from the image side of the second lens 122 to the object side of the filter 30 when the optical lens 10 is in the telephoto state
  • d1/S31 represents the filter when the optical lens 10 is in the telephoto state
  • d1/S32 represents the distance from the image side of the filter 30 to the photosensitive element 20 when the optical lens 10 is in the telephoto state.
  • the thickness d2 represents the thickness of each lens of the optical lens 10 and the distance between the lenses when the optical lens 10 is in the macro shooting state.
  • d2/S11 represents the thickness of the first lens 111 when the optical lens 10 is in the macro shooting state
  • d2/S12 represents the image side of the first lens 111 to the second lens 112 when the optical lens 10 is in the macro shooting state
  • d2/S13 represents the thickness of the second lens 112 when the optical lens 10 is in the macro shooting state
  • d2/S14 represents the image side surface of the second lens 112 when the optical lens 10 is in the macro shooting state
  • the distance to the object side of the third lens 113 d2/S15 represents the thickness of the third lens 113 when the optical lens 10 is in the macro shooting state
  • d2/S16 represents the third lens 113 when the optical lens 10 is in the macro shooting state.
  • d2/S21 represents the thickness of the first lens 121 when the optical lens 10 is in the macro shooting state
  • d2/S22 represents the optical lens 10 is in the micro shooting state
  • d2/S23 represents the thickness of the second lens 122 when the optical lens 10 is in the macro shooting state
  • d2 /S24 represents the distance from the image side of the second lens 122 to the object side of the filter 30 when the optical lens 10 is in the macro shooting state
  • d2/S31 represents the filter 30 when the optical lens 10 is in the macro shooting state
  • d2/S32 represents the distance from the image side of the filter 30 to the photosensitive element 20 when the optical lens 10 is in the macro shooting state.
  • d1, d2, d1/S11, d1/S12, d1/S13, d1/S14, d1/S15, d1/S16, d1/S21, d1/S22, d1/S23, d1 /S24, d1/S31, d1/S32, d2/S11, d2/S12, d2/S13, d2/S14, d2/S15, d2/S16, d2/S21, d2/S22, d2/S23, d2/S24 , d2/S31, d2/S32 and other symbols have the same meaning, and will not be repeated when they appear again later.
  • Table 2 shows the design parameters of each aspherical lens element of the optical lens 10 of the present embodiment.
  • the aspherical lens mentioned in this application refers to a lens whose image side and object side are both aspherical.
  • the second lens 112 and the third lens 113 of the first lens group 11 and the first lens 121 and the second lens 122 of the second lens group 12 are all aspherical lenses.
  • K is a quadratic surface constant
  • symbols such as A 2 , A 4 , A 6 , A 8 , A 10 , and A 12 represent polynomial coefficients.
  • each parameter in the table is expressed in scientific notation.
  • 3.7308E-03 means 3.7308 ⁇ 10 ⁇ 03
  • -1.4773E-06 means ⁇ 1.4773 ⁇ 10 ⁇ 6 .
  • symbols such as K, A 2 , A 4 , A 6 , A 8 , A 10 , and A 12 have the same meaning, and will not be repeated when they appear again later.
  • all aspherical surface types can be limited by but not limited to the following aspherical surface formulas:
  • z is the sag of the aspheric surface (that is, the relative distance between the point on the aspheric surface whose distance is r from the optical axis and the tangent plane tangent to the intersection point on the optical axis of the aspheric surface), and r is the radial coordinate of the aspheric surface (that is, on the aspheric curve The vertical distance between the point and the optical axis), c is the spherical curvature of the aspheric vertex, K is the quadratic surface constant, ⁇ i is the i-th order aspheric coefficient, and ⁇ is the normalized axial coordinate.
  • the second lens 112 , the third lens 113 , the first lens 121 , and the second lens in the optical lens 10 of this embodiment can be designed and obtained by substituting the parameters in Table 2 into the above-mentioned aspheric formula.
  • Lens 122 .
  • the optical lens 10 of the present embodiment is obtained according to the design parameters of the above-mentioned lenses.
  • Table 3 shows the basic parameters of the optical lens 10 of the present embodiment.
  • f1 is the focal length of the first lens group 11 .
  • f2 is the focal length of the second lens group 12 .
  • f11 is the focal length of the first lens 111 of the first lens group 11 .
  • f12 is the focal length of the second lens 112 of the first lens group 11 .
  • f13 is the focal length of the third lens 113 of the first lens group 11 .
  • f21 is the focal length of the first lens 121 of the second lens group 12 .
  • f22 is the focal length of the second lens 122 of the second lens group 12 .
  • f is the focal length of the optical system.
  • F# is the aperture F value of the optical system.
  • ⁇ is the ratio of the incident angle to the exit angle of the second lens group 12
  • is the focal length sensitivity
  • TTL is the total optical length, that is, the on-axis distance from the object side of the first lens 111 of the first lens group 11 to the image plane.
  • the total optical length of the optical lens 10 is 16.828 mm.
  • the image side of the lens in the first lens group 11 closest to the second lens group 12 and the object side of the lens in the second lens group 12 closest to the first lens group 11 The distance d between them is the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 .
  • the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 0.999 mm; when the optical lens 10 is in the macro shooting state , the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 2.32 mm.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 is 1.32 mm, and the short-distance movement can meet the application requirements of the optical lens 10 in different scenarios, and it is necessary to drive the first lens group 10 .
  • the requirements of the driving structure for the movement of the two lens groups 12 are relatively small.
  • the ratio of the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 and the optical total length TTL of the optical lens 10 is 0.138.
  • is 0.74
  • is 0.47
  • of the second lens group 12 of the optical lens 10 and the optical lens 10 is 0.63
  • the focal lengths of the first lens group 11 and the second lens group 12 of the optical lens 10 can be reasonably obtained. distribution, so that the optical lens 10 can have a good imaging effect.
  • the second lens group 12 can cooperate with the first lens group 11 to correct the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .
  • of the ratio of the focal length of the first lens group 11 to the focal length of the second lens group 12 is smaller than 1, that is, the refractive power of the first lens group 11 is higher than that of the second lens group 12 is stronger, the first lens group 11 has stronger light adjustment ability, and the second lens group 12 has less effect on light adjustment, thereby reducing the light to the optical lens 10 when the second lens group 12 moves between different positions
  • the difference in the adjustment effect ensures that when the second lens group 12 is moved to adjust the focal length of the optical lens 10 to achieve telephoto and macro shooting, the imaging effect of the optical lens 10 can always be better.
  • the ratio of the focal length of the first lens 111 to the second lens 112 in the first lens group 11 is
  • the focal length can be reasonably allocated, so that the optical lens 10 can have a good imaging effect.
  • the focal power of the first lens 111 is smaller than the focal length of the second lens 112 , that is, the first lens 111 can have a better light converging effect, so as to collect more external light to the optical lens 10 . Inside, the incident light amount of the optical lens 10 is increased, so that the optical lens 10 has a better imaging effect.
  • the ratio of the focal length of the first lens 121 of the second lens group 12 to the lens closest to the image side is
  • the focal lengths of the first lens 121 and the lens closest to the image side (ie, the second lens 122 ) can be reasonably distributed, so that the second lens group 12 can have a better light adjustment effect, so that the second lens group 12 A better focal length adjustment effect can be achieved, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, ensuring that the optical lens 10 can have a better shooting effect under different usage requirements.
  • the absolute value of the focal length of the first lens 121 of the second lens group 12 is smaller than the absolute value of the focal length of the lens closest to the image side (ie the second lens 122 ), that is, the second lens group 12
  • the degree of refraction of the first lens 121 is relatively high. Therefore, during the axial movement of the second lens group 12, the light incident from the first lens group 11 to the second lens group 12 passes through the first lens
  • the light after 121 can be adjusted at the first time, so as to ensure good adjustment in different usage scenarios by using as few lenses as possible, so as to ensure that the optical lens 10 can have good imaging effects in different usage scenarios.
  • of the second lens group 12 is 3.54, wherein the ratio ⁇ of the incident angle to the exit angle of the light on the second lens group 12 is 2.13.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens 10 can achieve better performance in different usage scenarios. Imaging effect.
  • FIG. 8 shows a vertical-axis spherical aberration curve diagram of light with wavelengths of 656 nm, 587 nm, and 486 nm passing through the optical lens 10 of the first embodiment.
  • the ordinate of Figure 8 represents the actual image height, in millimeters; the abscissa represents the color difference in the vertical axis, in millimeters.
  • FIG. 9 shows the astigmatic field curve of light with a wavelength of 555 nm after passing through the optical lens 10 of the first embodiment. The ordinate of FIG.
  • FIG. 10 is a diagram showing the distortion of light with a wavelength of 555 nm passing through the optical lens 10 of the first embodiment. The ordinate in FIG.
  • the vertical axis spherical aberration of light with different wavelengths after passing through the optical lens 10 of this embodiment is also controlled within a relatively small range.
  • FIG. 9 the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in both the sagittal direction and the meridional direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small.
  • the distortion of the light after passing through the optical lens 10 of the present embodiment is small, that is, the distortion of the image formed by the optical lens 10 of the present embodiment is small. Therefore, in this embodiment, the posterior vertical axis spherical aberration, astigmatic field curvature and distortion of light passing through the optical lens 10 of this embodiment are all small, that is, the optical lens 10 of this embodiment can achieve better imaging effects. Among them, spherical aberration is the difference between the actual light and the paraxial or paraxial light caused by the spatial variation of the optical lens.
  • FIG. 11a is a schematic structural diagram of the optical lens 10 according to the second embodiment of the present application when used for long-distance shooting, and FIG. Schematic diagram of the structure during macro shooting.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 which are arranged in sequence from the object side to the image side.
  • the first lens group 11 has three lenses, which are a first lens 111, a second lens 112, and a third lens 113.
  • the first lens 111, the second lens 112, and the third lens 113 are arranged in sequence from the object side to the image side.
  • the second lens group 12 has two lenses, namely a first lens 121 and a second lens 122.
  • the first lens 121 and the second lens 122 are arranged in sequence from the object side to the image side.
  • the first lens 111 , the second lens 112 , the third lens 113 , the first lens 121 and the second lens 122 are arranged coaxially.
  • the axial direction of the first lens group 11 is the optical axis direction of the first lens 111 , the second lens 112 , and the third lens 113
  • the axial direction of the second lens group 12 is the first lens 121 , the second lens 112 , and the third lens 113 .
  • the lens of the second lens 122, the first lens group 11 and the second lens group 12 are coaxial.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power.
  • the first lens 111 of the first lens group 11 has positive refractive power
  • the second lens 112 has negative refractive power
  • the third lens 113 has positive refractive power.
  • the first lens 121 and the second lens 122 of the second lens group 12 have negative refractive power.
  • the first lens 121 of the second lens group 12 is a meniscus lens, and the image side surface of the first lens 121 is a concave surface.
  • the first lens 111 of the first lens group 11 is made of glass.
  • the object side and the image side of the first lens 111 of the first lens group 11 are spherical surfaces, and the object side and the image side of the second lens 112 and the third lens 113 are high-order aspheric surfaces.
  • the object side surface and the image side surface of the first lens 121 and the second lens 122 of the second lens group 12 are both high-order aspheric surfaces.
  • Table 5 shows the design parameters of each aspherical lens element of the optical lens 10 of the present embodiment.
  • the second lens 112 and the third lens 113 of the first lens group 11 and the first lens 121 and the second lens 122 of the second lens group 12 are all aspherical lenses.
  • all aspherical surface types can be limited by but not limited to the following aspherical surface formulas:
  • z is the sag of the aspheric surface (that is, the relative distance between the point on the aspheric surface whose distance is r from the optical axis and the tangent plane tangent to the intersection point on the optical axis of the aspheric surface), and r is the radial coordinate of the aspheric surface (that is, on the aspheric curve The vertical distance between the point and the optical axis), c is the spherical curvature of the aspheric vertex, K is the quadratic surface constant, ⁇ i is the i-th order aspheric coefficient, and ⁇ is the normalized axial coordinate.
  • the second lens 112 , the third lens 113 , the first lens 121 , and the second lens in the optical lens 10 of this embodiment can be designed and obtained by substituting the parameters in Table 2 into the above-mentioned aspheric formula.
  • Lens 122 .
  • the optical lens 10 of the present embodiment is obtained according to the design parameters of the above-mentioned lenses.
  • Table 6 shows the basic parameters of the optical lens 10 of the present embodiment.
  • parameter value parameter value f1(mm) 10.28 f22(mm) 29.8 f2(mm) -14.22 f(mm) 16.53 f11(mm) 9.50 F#(mm) 3.00 f12(mm) -25.79 IH(mm) 4.2 f13(mm) 24.88 beta 1.61 f21(mm) -9.97
  • the total optical length of the optical lens 10 is 17.248 mm.
  • the image side of the lens in the first lens group 11 closest to the second lens group 12 and the object side of the lens in the second lens group 12 closest to the first lens group 11 The distance d between them is the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 .
  • the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 1.084 mm; when the optical lens 10 is in the macro shooting state , the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 3.58 mm.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 is 2.49 mm, and the short-distance movement can meet the application requirements of the optical lens 10 in different scenarios, and it is necessary to drive the first lens group 10 .
  • the requirements of the driving structure for the movement of the two lens groups 12 are relatively small.
  • the ratio of the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 and the optical total length TTL of the optical lens 10 is 0.144.
  • is 0.72
  • is 0.62
  • of the second lens group 12 of the optical lens 10 and the optical lens 10 is 0.86
  • the focal lengths of the first lens group 11 and the second lens group 12 of the optical lens 10 can be reasonably obtained. distribution, so that the optical lens 10 can have a good imaging effect.
  • the second lens group 12 can cooperate with the first lens group 11 to correct the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .
  • of the ratio of the focal length of the first lens group 11 to the focal length of the second lens group 12 is smaller than 1, that is, the focal length of the first lens group 11 is smaller than that of the second lens group 12
  • the focal length, the refractive power of the first lens group 11 is stronger than that of the second lens group 12, the first lens group 11 has stronger light adjustment ability, and the second lens group 12 has less effect on light adjustment, thereby reducing the second lens group 12.
  • the difference in the light adjustment effect of the optical lens 10 when the lens group 12 moves between different positions ensures that when the second lens group 12 is moved to adjust the focal length of the optical lens 10 to achieve telephoto and macro shooting, the optical The imaging effect of the lens 10 can always be better.
  • the ratio of the focal length of the first lens 111 to the second lens 112 in the first lens group 11 is
  • the focal length can be reasonably allocated, so that the optical lens 10 can have a good imaging effect.
  • the focal power of the first lens 111 is smaller than the focal length of the second lens 112 , that is, the first lens 111 can have a better light converging effect, so as to collect more external light to the optical lens 10 . Inside, the incident light amount of the optical lens 10 is increased, so that the optical lens 10 has a better imaging effect.
  • the ratio of the focal length of the first lens 121 of the second lens group 12 to the lens closest to the image side is
  • the focal lengths of the first lens 121 and the lens closest to the image side (ie, the second lens 122 ) can be reasonably distributed, so that the second lens group 12 can have a better light adjustment effect, so that the second lens group 12 A better focal length adjustment effect can be achieved, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, ensuring that the optical lens 10 can have a better shooting effect under different usage requirements.
  • the absolute value of the focal length of the first lens 121 of the second lens group 12 is smaller than the absolute value of the focal length of the lens closest to the image side (ie the second lens 122 ), that is, the second lens group 12
  • the degree of refraction of the first lens 121 is relatively high. Therefore, during the axial movement of the second lens group 12, the light incident from the first lens group 11 to the second lens group 12 passes through the first lens 121. The latter light can be adjusted at the first time, so as to ensure good adjustment in different usage scenarios by using as few lenses as possible, so as to ensure that the optical lens 10 can have good imaging effects in different usage scenarios.
  • of the second lens group 12 is 3.54, wherein the ratio ⁇ of the incident angle to the exit angle of the light on the second lens group 12 is 2.13.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens 10 can achieve better performance in different usage scenarios. Imaging effect.
  • FIG. 12 shows the vertical-axis spherical aberration curves of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens 10 of the second embodiment.
  • the ordinate of Figure 12 represents the actual image height, in millimeters; the abscissa represents the color difference in the vertical axis, in millimeters.
  • FIG. 13 is a graph showing the astigmatic field curve of light with a wavelength of 555 nm after passing through the optical lens 10 of the second embodiment. The ordinate of FIG.
  • FIG. 13 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • FIG. 14 is a diagram showing the distortion of light with a wavelength of 555 nm passing through the optical lens 10 of the second embodiment. The ordinate of FIG.
  • the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the second embodiment, and the unit is %.
  • the vertical axis spherical aberration of light with different wavelengths after passing through the optical lens 10 of this embodiment is also controlled within a small range.
  • the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in the sagittal direction and the meridional direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small. It can be seen from FIG.
  • the distortion of light after passing through the optical lens 10 of the present embodiment is small, that is, the distortion of the image formed by the optical lens 10 of the present embodiment is small. Therefore, in this embodiment, the posterior vertical axis spherical aberration, astigmatic field curvature and distortion of light passing through the optical lens 10 of this embodiment are all small, that is, the optical lens 10 of this embodiment can achieve a better imaging effect.
  • FIG. 15a shows a schematic structural diagram of the optical lens 10 according to the third embodiment of the present application when it is used for long-distance shooting
  • FIG. 15b shows the optical lens 10 according to the third embodiment of the present application for Schematic diagram of the structure during macro shooting.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 which are arranged in sequence from the object side to the image side.
  • the first lens group 11 has three lenses, which are a first lens 111, a second lens 112, and a third lens 113.
  • the first lens 111, the second lens 112, and the third lens 113 are arranged in sequence from the object side to the image side. .
  • the second lens group 12 has two lenses, namely a first lens 121 and a second lens 122.
  • the first lens 121 and the second lens 122 are arranged in sequence from the object side to the image side.
  • the first lens 111 , the second lens 112 , the third lens 113 , the first lens 121 and the second lens 122 are arranged coaxially.
  • the axial direction of the first lens group 11 is the optical axis direction of the first lens 111 , the second lens 112 , and the third lens 113
  • the axial direction of the second lens group 12 is the first lens 121 , the second lens 112 , and the third lens 113 .
  • the lens of the second lens 122, the first lens group 11 and the second lens group 12 are coaxial.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power.
  • the first lens 111 of the first lens group 11 has positive refractive power
  • the second lens 112 has negative refractive power
  • the third lens 113 has positive refractive power.
  • the first lens 121 of the second lens group 12 has positive refractive power
  • the second lens 122 has negative refractive power.
  • the first lens 121 of the second lens group 12 is a meniscus lens, and the image side surface of the first lens 121 is a convex surface.
  • the first lens 111 of the first lens group 11 is made of glass.
  • the object side and the image side of the first lens 111 of the first lens group 11 are spherical surfaces, and the object side and the image side of the second lens 112 and the third lens 113 are high-order aspheric surfaces.
  • the object side surface and the image side surface of the first lens 121 and the second lens 122 of the second lens group 12 are both high-order aspheric surfaces.
  • Table 8 shows the design parameters of each aspherical lens element of the optical lens 10 of the present embodiment.
  • the second lens 112 and the third lens 113 of the first lens group 11 and the first lens 121 and the second lens 122 of the second lens group 12 are all aspherical lenses.
  • the second lens 112 and the third lens 113 of the first lens group 11 can be designed.
  • the first lens 121 and the second lens 122 of the second lens group 12 can be designed.
  • the optical lens 10 of the present embodiment is obtained according to the design parameters of the above-mentioned lenses.
  • Table 9 shows the basic parameters of the optical lens 10 of the present embodiment.
  • the optical total length of the optical lens 10 is 17.23 mm.
  • the image side of the lens in the first lens group 11 closest to the second lens group 12 and the object side of the lens in the second lens group 12 closest to the first lens group 11 The distance d between them is the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 .
  • the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 0.95 mm; when the optical lens 10 is in the macro shooting state , the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 2.03 mm.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 is 1.08 mm, and the short-distance movement can meet the application requirements of the optical lens 10 in different scenarios, which is very important for driving the first lens group 11 .
  • the requirements of the driving structure for the movement of the two lens groups 12 are relatively small.
  • the ratio of the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 to the total optical length TTL of the optical lens 10 is 0.144.
  • is 1.02
  • is 0.48
  • of the second lens group 12 of the optical lens 10 and the optical lens 10 is 0.47
  • the focal lengths of the first lens group 11 and the second lens group 12 of the optical lens 10 can be reasonably obtained. distribution, so that the optical lens 10 can have a good imaging effect.
  • the second lens group 12 can cooperate with the first lens group 11 to correct the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .
  • the ratio of the focal length of the first lens 111 to the second lens 112 in the first lens group 11 is
  • the focal length can be reasonably allocated, so that the optical lens 10 can have a good imaging effect.
  • the focal power of the first lens 111 is smaller than the focal length of the second lens 112 , that is, the first lens 111 can have a better light converging effect, so as to collect more external light to the optical lens 10 . Inside, the incident light amount of the optical lens 10 is increased, so that the optical lens 10 has a better imaging effect.
  • the ratio of the focal length of the first lens 121 of the second lens group 12 to the lens closest to the image side is
  • the focal lengths of the first lens 121 and the lens closest to the image side can be reasonably allocated, so that the second lens group 12 can have a better light adjustment effect, so that the second lens group 12 can achieve a better focal length adjustment effect. , so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, and to ensure that the optical lens 10 can have a better shooting effect under different usage requirements.
  • of the second lens group 12 is 3.34, wherein the ratio ⁇ of the incident angle to the exit angle of the light on the second lens group 12 is 2.08.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens 10 can achieve better performance in different usage scenarios. Imaging effect.
  • FIG. 16 shows the vertical-axis spherical aberration curves of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens 10 of the third embodiment.
  • the ordinate of Fig. 16 represents the actual image height, in millimeters; the abscissa represents the chromatic aberration in the vertical axis, in millimeters.
  • FIG. 17 is a graph showing the astigmatic field curve of light having a wavelength of 555 nm after passing through the optical lens 10 of the third embodiment. The ordinate of FIG.
  • FIG. 17 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature value of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • FIG. 18 is a diagram showing the distortion of light with a wavelength of 555 nm passing through the optical lens 10 of the third embodiment. The ordinate in FIG.
  • the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the third embodiment, in %.
  • the vertical axis spherical aberration of light with different wavelengths after passing through the optical lens 10 of this embodiment is also controlled within a small range.
  • FIG. 17 the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in both the sagittal direction and the tangential direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small. It can be seen from FIG.
  • the distortion of light after passing through the optical lens 10 of the present embodiment is small, that is, the distortion of the image formed by the optical lens 10 of the present embodiment is small. Therefore, in this embodiment, the posterior vertical axis spherical aberration, astigmatic field curvature and distortion of light passing through the optical lens 10 of this embodiment are all small, that is, the optical lens 10 of this embodiment can achieve a better imaging effect.
  • FIG. 19a shows a schematic structural diagram of the optical lens 10 according to the fourth embodiment of the present application when used for telephoto shooting
  • FIG. 19b shows the optical lens 10 according to the fourth embodiment of the present application used for Schematic diagram of the structure during macro shooting.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 that are arranged in sequence from the object side to the image side.
  • the first lens group 11 has three lenses, which are a first lens 111, a second lens 112, and a third lens 113.
  • the first lens 111, the second lens 112, and the third lens 113 are arranged in sequence from the object side to the image side. .
  • the second lens group 12 has two lenses, namely a first lens 121 and a second lens 122.
  • the first lens 121 and the second lens 122 are arranged in sequence from the object side to the image side.
  • the first lens 111 , the second lens 112 , the third lens 113 , the first lens 121 and the second lens 122 are arranged coaxially.
  • the axial direction of the first lens group 11 is the optical axis direction of the first lens 111 , the second lens 112 , and the third lens 113
  • the axial direction of the second lens group 12 is the first lens 121 , the second lens 112 , and the third lens 113 .
  • the lens of the second lens 122, the first lens group 11 and the second lens group 12 are coaxial.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power.
  • the first lens 111 of the first lens group 11 has positive refractive power
  • the second lens 112 has negative refractive power
  • the third lens 113 has positive refractive power.
  • Both the first lens 121 and the second lens 122 of the second lens group 12 have negative refractive power.
  • the first lens 121 of the second lens group 12 is a meniscus lens, and the image side surface of the first lens 121 is a concave surface.
  • the first lens 111 of the first lens group 11 is made of glass.
  • the object side and the image side of the first lens 111 of the first lens group 11 are spherical surfaces, and the object side and the image side of the second lens 112 and the third lens 113 are high-order aspheric surfaces.
  • the object side surface and the image side surface of the first lens 121 and the second lens 122 of the second lens group 12 are both high-order aspheric surfaces.
  • Table 11 shows the design parameters of each aspherical lens element of the optical lens 10 of the present embodiment.
  • the second lens 112 and the third lens 113 of the first lens group 11 and the first lens 121 and the second lens 122 of the second lens group 12 are all aspherical lenses.
  • the second lens 112 and the third lens 113 of the first lens group 11 can be designed.
  • the first lens 121 and the second lens 122 of the second lens group 12 can be designed.
  • the optical lens 10 of the present embodiment is obtained according to the design parameters of the above-mentioned lenses.
  • Table 12 shows the basic parameters of the optical lens 10 of the present embodiment.
  • the optical total length of the optical lens 10 is 17.23 mm.
  • the image side of the lens in the first lens group 11 closest to the second lens group 12 and the object side of the lens in the second lens group 12 closest to the first lens group 11 The distance d between them is the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 .
  • the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 0.88 mm; when the optical lens 10 is in the macro shooting state , the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 3.361 mm.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 is 2.48 mm, and the short-distance movement can meet the application requirements of the optical lens 10 in different scenarios, and it is necessary to drive the first lens group 10 .
  • the requirements of the driving structure for the movement of the two lens groups 12 are relatively small.
  • the ratio of the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 to the total optical length TTL of the optical lens 10 is 0.144.
  • of the first lens group 11 and the second lens group 12 of the optical lens 10 is 0.99, and the focal length ratio of the first lens group 11 of the optical lens 10 to the optical lens 10
  • the second lens group 12 can cooperate with the first lens group 11 to correct the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .
  • of the ratio of the focal length of the first lens group 11 to the focal length of the second lens group 12 is smaller than 1, that is, the refractive power of the first lens group 11 is higher than that of the second lens group 12 is stronger, the first lens group 11 has stronger light adjustment ability, and the second lens group 12 has less effect on light adjustment, thereby reducing the light to the optical lens 10 when the second lens group 12 moves between different positions
  • the difference in the adjustment effect ensures that when the second lens group 12 is moved to adjust the focal length of the optical lens 10 to achieve telephoto and macro shooting, the imaging effect of the optical lens 10 can always be better.
  • the ratio of the focal length of the first lens 111 to the second lens 112 in the first lens group 11 is
  • the focal length can be reasonably allocated, so that the optical lens 10 can have a good imaging effect.
  • the focal power of the first lens 111 is smaller than the focal length of the second lens 112 , that is, the first lens 111 can have a better light converging effect, so as to collect more external light to the optical lens 10 . Inside, the incident light amount of the optical lens 10 is increased, so that the optical lens 10 has a better imaging effect.
  • the ratio of the focal length of the first lens 121 of the second lens group 12 to the lens closest to the image side is
  • the focal lengths of the first lens 121 and the lens closest to the image side (ie, the second lens 122 ) can be reasonably distributed, so that the second lens group 12 can have a better light adjustment effect, so that the second lens group 12 A better focal length adjustment effect can be achieved, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, ensuring that the optical lens 10 can have a better shooting effect under different usage requirements.
  • the absolute value of the focal length of the first lens 121 of the second lens group 12 is smaller than the absolute value of the focal length of the lens closest to the image side (ie the second lens 122 ), that is, the second lens group 12
  • the degree of refraction of the first lens 121 is relatively high. Therefore, during the axial movement of the second lens group 12, the light incident from the first lens group 11 to the second lens group 12 passes through the first lens group 12.
  • the light behind the lens 121 can be adjusted for the first time, so as to ensure that the lens 121 is used as little as possible to achieve good adjustment in different usage scenarios, so as to ensure that the optical lens 10 can have good imaging effects in different usage scenarios. .
  • of the second lens group 12 is 2.61, wherein the ratio ⁇ of the incident angle to the exit angle of the light on the second lens group 12 is 1.90.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens 10 can achieve better performance in different usage scenarios. Imaging effect.
  • FIG. 20 shows the vertical axis spherical aberration curves of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens 10 of the fourth embodiment.
  • the ordinate of Figure 20 represents the actual image height, in millimeters; the abscissa represents the chromatic aberration in the direction of the vertical axis, in millimeters.
  • FIG. 21 is a graph showing the astigmatic field curve of light with a wavelength of 555 nm after passing through the optical lens 10 of the fourth embodiment. The ordinate of FIG.
  • FIG. 21 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature value of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • FIG. 22 is a diagram showing the distortion of light with a wavelength of 555 nm passing through the optical lens 10 of the fourth embodiment. The ordinate in FIG.
  • the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the fourth embodiment, in %.
  • the vertical axis spherical aberration of light with different wavelengths after passing through the optical lens 10 of this embodiment is also controlled within a small range.
  • the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in the sagittal direction and the meridional direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small. It can be seen from FIG.
  • the distortion of light after passing through the optical lens 10 of the present embodiment is small, that is, the distortion of the image formed by the optical lens 10 of the present embodiment is small. Therefore, in this embodiment, the posterior vertical axis spherical aberration, astigmatic field curvature and distortion of light passing through the optical lens 10 of this embodiment are all small, that is, the optical lens 10 of this embodiment can achieve a better imaging effect.
  • FIG. 23a is a schematic structural diagram of the optical lens 10 according to the fifth embodiment of the present application when it is used for telephoto shooting. Schematic diagram of the structure during macro shooting.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 that are arranged in sequence from the object side to the image side.
  • the first lens group 11 consists of four lenses, namely a first lens 111 , a second lens 112 , a third lens 113 and a fourth lens 114 , a first lens 111 , a second lens 112 , a third lens 113 , and a fourth lens 114 .
  • the lenses 114 are arranged in sequence from the object side to the image side.
  • the second lens group 12 has two lenses, namely a first lens 121 and a second lens 122.
  • the first lens 121 and the second lens 122 are arranged in sequence from the object side to the image side.
  • the first lens 111 , the second lens 112 , the third lens 113 , the fourth lens 114 , the first lens 121 and the second lens 122 are coaxially arranged.
  • the axial direction of the first lens group 11 is the optical axis direction of the first lens 111 , the second lens 112 , the third lens 113 and the fourth lens 114
  • the axial direction of the second lens group 12 is the first lens 111 , the second lens 112 , the third lens 113 , and the fourth lens 114 .
  • a lens 121 and a lens of the second lens 122, the first lens group 11 and the second lens group 12 are coaxial.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power
  • the first lens 111 of the first lens group 11 has positive refractive power
  • the second lens 112 has negative refractive power
  • the third lens 113 and the fourth lens 114 both have positive refractive power.
  • the first lens 121 of the second lens group 12 has negative refractive power
  • the second lens 122 has positive refractive power.
  • the first lens 121 of the second lens group 12 is a meniscus lens, and the image side surface of the first lens 121 is a concave surface.
  • the first lens 111 of the first lens group 11 is made of glass.
  • the object side and the image side of the first lens 111 of the first lens group 11 are spherical surfaces, and the object side and the image side of the second lens 112 and the third lens 113 are high-order aspheric surfaces.
  • the object side surface and the image side surface of the first lens 121 and the second lens 122 of the second lens group 12 are both high-order aspheric surfaces.
  • S17 represents the object side surface of the fourth lens 114
  • S18 represents the image side surface of the fourth lens 114 . It should be noted that, in this application, symbols such as S17 and S18 have the same meaning, and will not be repeated when they appear again in the future.
  • Table 14 shows the design parameters of each aspherical lens element of the optical lens 10 of the present embodiment.
  • the second lens 112 , the third lens 113 , and the fourth lens 114 of the first lens group 11 , and the first lens 121 and the second lens 122 of the second lens group 12 are all aspherical lenses.
  • the second lens 112 and the third lens 113 of the first lens group 11 can be designed.
  • the first lens 121 and the second lens 122 of the second lens group 12 can be designed.
  • the optical lens 10 of the present embodiment is obtained according to the design parameters of the above-mentioned lenses.
  • Table 15 shows the basic parameters of the optical lens 10 of the present embodiment.
  • f14 is the focal length of the fourth lens 114 of the first lens group 11 . It should be noted that, in this application, symbols such as f14 have the same meaning, and will not be repeated when they appear again in the future.
  • the optical total length of the optical lens 10 is 17.17 mm.
  • the image side of the lens in the first lens group 11 closest to the second lens group 12 and the object side of the lens in the second lens group 12 closest to the first lens group 11 The distance d between them is the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 .
  • the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 0.7 mm; when the optical lens 10 is in the macro shooting state , the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 3.2 mm.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 is 2.5 mm, and the short-distance movement can meet the application requirements of the optical lens 10 in different scenarios, which is very important for driving the first lens group 11 .
  • the requirements of the driving structure for the movement of the two lens groups 12 are relatively small.
  • the ratio of the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 to the total optical length TTL of the optical lens 10 is 0.146.
  • of the first lens group 11 and the second lens group 12 of the optical lens 10 is 0.8, and the focal length ratio of the first lens group 11 of the optical lens 10 to the optical lens 10
  • the second lens group 12 can cooperate with the first lens group 11 to correct the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .
  • of the ratio of the focal length of the first lens group 11 to the focal length of the second lens group 12 is smaller than 1, that is, the refractive power of the first lens group 11 is higher than that of the second lens group 12 is stronger, the first lens group 11 has stronger light adjustment ability, and the second lens group 12 has less effect on light adjustment, thereby reducing the light to the optical lens 10 when the second lens group 12 moves between different positions
  • the difference in the adjustment effect ensures that when the second lens group 12 is moved to adjust the focal length of the optical lens 10 to achieve telephoto and macro shooting, the imaging effect of the optical lens 10 can always be better.
  • the ratio of the focal length of the first lens 111 to the second lens 112 in the first lens group 11 is
  • the focal length can be reasonably allocated, so that the optical lens 10 can have a good imaging effect.
  • the focal power of the first lens 111 is smaller than the focal length of the second lens 112 , that is, the first lens 111 can have a better light converging effect, so as to collect more external light to the optical lens 10 . Inside, the incident light amount of the optical lens 10 is increased, so that the optical lens 10 has a better imaging effect.
  • the ratio of the focal length of the first lens 121 of the second lens group 12 to the lens closest to the image side is
  • the focal lengths of the first lens 121 and the lens closest to the image side (ie, the second lens 122 ) can be reasonably distributed, so that the second lens group 12 can have a better light adjustment effect, so that the second lens group 12 A better focal length adjustment effect can be achieved, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, ensuring that the optical lens 10 can have a better shooting effect under different usage requirements.
  • the absolute value of the focal length of the first lens 121 of the second lens group 12 is smaller than the absolute value of the focal length of the lens closest to the image side (ie the second lens 122 ), that is, the second lens group 12
  • the degree of refraction of the first lens 121 is relatively high. Therefore, during the axial movement of the second lens group 12, the light incident from the first lens group 11 to the second lens group 12 passes through the first lens
  • the light after 121 can be adjusted at the first time, so as to ensure good adjustment in different usage scenarios by using as few lenses as possible, so as to ensure that the optical lens 10 can have good imaging effects in different usage scenarios.
  • of the second lens group 12 is 2.38, wherein the ratio ⁇ of the incident angle to the exit angle of the light on the second lens group 12 is 1.84.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens 10 can achieve better performance in different usage scenarios. Imaging effect.
  • FIG. 24 shows the vertical-axis spherical aberration curves of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens 10 of the fifth embodiment.
  • the ordinate of Figure 24 represents the actual image height, in millimeters; the abscissa represents the color difference in the vertical axis, in millimeters.
  • FIG. 25 is a graph showing the astigmatic field curve of light with a wavelength of 555 nm after passing through the optical lens 10 of the fifth embodiment. The ordinate of FIG.
  • FIG. 25 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • FIG. 26 is a diagram showing the distortion of light with a wavelength of 555 nm passing through the optical lens 10 of the fifth embodiment. The ordinate of FIG.
  • the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the fifth embodiment, and the unit is %.
  • the vertical axis spherical aberration of light with different wavelengths after passing through the optical lens 10 of this embodiment is also controlled within a small range.
  • FIG. 25 after the light passes through the optical lens 10 of the present embodiment, the astigmatic field curvature in the sagittal direction and the meridional direction is both small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small. It can be seen from FIG.
  • the distortion of light after passing through the optical lens 10 of the present embodiment is small, that is, the distortion of the image formed by the optical lens 10 of the present embodiment is small. Therefore, in this embodiment, the posterior vertical axis spherical aberration, astigmatic field curvature and distortion of light passing through the optical lens 10 of this embodiment are all small, that is, the optical lens 10 of this embodiment can achieve a better imaging effect.
  • FIG. 27a is a schematic structural diagram of the optical lens 10 according to the sixth embodiment of the present application when used for telephoto shooting
  • FIG. 27b is a schematic diagram of the optical lens 10 of the sixth embodiment of the present application being used Schematic diagram of the structure during macro shooting.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 which are arranged in sequence from the object side to the image side.
  • the first lens group 11 consists of four lenses, namely the first lens 111 , the second lens 112 , the third lens 113 , the fourth lens 114 , the first lens 111 , the second lens 112 , the third lens 113 , and the fourth lens 114 .
  • the lenses 114 are arranged in sequence from the object side to the image side.
  • the second lens group 12 has two lenses, namely a first lens 121 and a second lens 122.
  • the first lens 121 and the second lens 122 are arranged in sequence from the object side to the image side.
  • the first lens 111 , the second lens 112 , the third lens 113 , the fourth lens 114 , the first lens 121 and the second lens 122 are coaxially arranged.
  • the axial direction of the first lens group 11 is the optical axis direction of the first lens 111 , the second lens 112 , the third lens 113 and the fourth lens 114
  • the axial direction of the second lens group 12 is the first lens 111 , the second lens 112 , the third lens 113 , and the fourth lens 114
  • a lens 121 and a lens of the second lens 122, the first lens group 11 and the second lens group 12 are coaxial.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power.
  • the first lens 111 of the first lens group 11 has positive refractive power
  • the second lens 112 has negative refractive power
  • the combination of the third lens 113 and the fourth lens 114 has positive refractive power.
  • Both the first lens 121 and the second lens 122 of the second lens group 12 have negative refractive power.
  • the first lens 121 of the second lens group 12 is a meniscus lens
  • the image side surface of the first lens 121 is a concave surface.
  • the first lens 111 of the first lens group 11 is made of glass.
  • the object side and the image side of the first lens 111 of the first lens group 11 are spherical surfaces, and the object side and the image side of the second lens 112 and the third lens 113 are high-order aspheric surfaces.
  • the object side surface and the image side surface of the first lens 121 and the second lens 122 of the second lens group 12 are both high-order aspheric surfaces.
  • Table 17 shows the design parameters of each aspherical lens element of the optical lens 10 of the present embodiment.
  • the second lens 112 , the third lens 113 , and the fourth lens 114 of the first lens group 11 , and the first lens 121 and the second lens 122 of the second lens group 12 are all aspherical lenses.
  • the second lens 112 that is, the second lens 112 , the third lens 113 , and the fourth lens 114 of the first lens group 11 , and the first lens 121 and the second lens 122 of the second lens group 12 can be designed.
  • the second lens 112 that is, the second lens 112 , the third lens 113 , and the fourth lens 114 of the first lens group 11 , and the first lens 121 and the second lens 122 of the second lens group 12 can be designed.
  • the first lens 121 and the second lens 122 of the second lens group 12 can be designed.
  • the optical lens 10 of the present embodiment is obtained according to the design parameters of the above-mentioned lenses.
  • Table 18 shows the basic parameters of the optical lens 10 of the present embodiment.
  • the total optical length of the optical lens 10 is 16.278 mm.
  • the image side of the lens in the first lens group 11 closest to the second lens group 12 and the object side of the lens in the second lens group 12 closest to the first lens group 11 The distance d between them is the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 .
  • the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 1 mm; when the optical lens 10 is in the macro shooting state, The distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 2.68 mm.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 is 1.68 mm, and the short-distance movement can meet the application requirements of the optical lens 10 in different scenarios, and it is necessary to drive the first lens group 10 .
  • the requirements of the driving structure for the movement of the two lens groups 12 are relatively small.
  • the ratio of the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 to the total optical length TTL of the optical lens 10 is 0.1.
  • is 0.88
  • is 0.56
  • of the second lens group 12 of the optical lens 10 and the optical lens 10 is 0.64
  • the focal lengths of the first lens group 11 and the second lens group 12 of the optical lens 10 can be reasonably obtained. distribution, so that the optical lens 10 can have a good imaging effect.
  • the second lens group 12 can cooperate with the first lens group 11 to correct the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .
  • the absolute value of the focal length of the first lens group 11 is smaller than the absolute value of the focal length of the second lens group 12, that is, the refractive power of the first lens group 11 is stronger than that of the second lens group 12, and the first lens group 11 has a stronger refractive power.
  • the lens group 11 has a stronger light adjustment ability, and the second lens group 12 has less effect on light adjustment, thereby reducing the difference in the light adjustment effect of the optical lens 10 when the second lens group 12 moves between different positions, ensuring that When the second lens group 12 is moved to adjust the focal length of the optical lens 10 to achieve telephoto and macro photography, the imaging effect of the optical lens 10 can always be good.
  • the ratio of the focal length of the first lens 111 to the second lens 112 in the first lens group 11 is
  • the focal length can be reasonably allocated, so that the optical lens 10 can have a good imaging effect.
  • the ratio of the focal length of the first lens 121 of the second lens group 12 to the lens closest to the image side is
  • the focal lengths of the first lens 121 and the lens closest to the image side (ie, the second lens 122 ) can be reasonably distributed, so that the second lens group 12 can have a better light adjustment effect, so that the second lens group 12 A better focal length adjustment effect can be achieved, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, ensuring that the optical lens 10 can have a better shooting effect under different usage requirements.
  • the absolute value of the focal length of the first lens 121 of the second lens group 12 is smaller than the absolute value of the focal length of the lens closest to the image side (ie the second lens 122 ), that is, the second lens group 12
  • the degree of refraction of the first lens 121 is relatively high. Therefore, during the axial movement of the second lens group 12, the light incident from the first lens group 11 to the second lens group 12 passes through the first lens
  • the light after 121 can be adjusted at the first time, so as to ensure good adjustment in different usage scenarios by using as few lenses as possible, so as to ensure that the optical lens 10 can have good imaging effects in different usage scenarios.
  • of the second lens group 12 is 2.19, wherein the ratio ⁇ of the incident angle to the exit angle of the light on the second lens group 12 is 1.79.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens 10 can achieve better performance in different usage scenarios. Imaging effect.
  • FIG. 28 shows the vertical-axis spherical aberration curves of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens 10 of the sixth embodiment.
  • the ordinate of Figure 28 represents the actual image height, in millimeters; the abscissa represents the color difference in the vertical axis, in millimeters.
  • FIG. 29 is a graph showing the astigmatic field curve of light having a wavelength of 555 nm after passing through the optical lens 10 of the sixth embodiment. The ordinate of FIG.
  • FIG. 29 represents the field of view angle in degrees (°), and the abscissa is the astigmatic field curvature value of the optical lens 10 , in millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • FIG. 30 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens 10 of the sixth embodiment. The ordinate of FIG.
  • the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the fifth embodiment, and the unit is %.
  • the vertical axis spherical aberration of light with different wavelengths after passing through the optical lens 10 of this embodiment is also controlled within a small range.
  • FIG. 29 the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in both the sagittal direction and the meridional direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small. It can be seen from FIG.
  • the distortion of light after passing through the optical lens 10 of the present embodiment is small, that is, the distortion of the image formed by the optical lens 10 of the present embodiment is small. Therefore, in this embodiment, the posterior vertical axis spherical aberration, astigmatic field curvature and distortion of light passing through the optical lens 10 of this embodiment are all small, that is, the optical lens 10 of this embodiment can achieve better imaging effects.
  • FIG. 31a is a schematic structural diagram of the optical lens 10 according to the seventh embodiment of the present application when used for telephoto shooting
  • FIG. 31b is a schematic diagram of the optical lens 10 of the seventh embodiment of the present application being used Schematic diagram of the structure during macro shooting.
  • the optical lens 10 includes a first lens group 11 and a second lens group 12 which are arranged in sequence from the object side to the image side.
  • the first lens group 11 consists of four lenses, namely the first lens 111 , the second lens 112 , the third lens 113 , the fourth lens 114 , the first lens 111 , the second lens 112 , the third lens 113 , and the fourth lens 114 .
  • the lenses 114 are arranged in sequence from the object side to the image side.
  • the second lens group 12 consists of two lenses, namely the first lens 121, the second lens 122 and the third lens 123, the first lens 121, the second lens 122 and the third lens 123 are Set in order from side to image side.
  • the first lens 111 , the second lens 112 , the third lens 113 , the fourth lens 114 , the first lens 121 , the second lens 122 and the third lens 123 are coaxially arranged.
  • the axial direction of the first lens group 11 is the optical axis direction of the first lens 111 , the second lens 112 , the third lens 113 and the fourth lens 114
  • the axial direction of the second lens group 12 is the first lens 111 , the second lens 112 , the third lens 113 , and the fourth lens 114
  • the first lens group 11 and the second lens group 12 are coaxial.
  • the first lens group 11 has positive refractive power
  • the second lens group 12 has negative refractive power
  • the first lens 111 of the first lens group 11 has positive refractive power
  • the second lens 112 has negative refractive power
  • the third lens 113 and the fourth lens 114 both have positive refractive power
  • the first lens 121 of the second lens group 12 has negative refractive power
  • the second lens 122 and the third lens 123 both have positive refractive power.
  • the first lens 121 of the second lens group 12 is a meniscus lens, and the image side surface of the first lens 121 is a concave surface.
  • the first lens 111 of the first lens group 11 is made of glass.
  • the object side and the image side of the first lens 111 of the first lens group 11 are spherical surfaces, and the object side and the image side of the second lens 112 and the third lens 113 are high-order aspheric surfaces.
  • the object side surface and the image side surface of the first lens 121 and the second lens 122 of the second lens group 12 are both high-order aspheric surfaces.
  • S25 represents the object side of the third lens 123 of the second lens group 12
  • S26 represents the image side of the third lens 123 of the second lens group 12 . It should be noted that, in this application, symbols such as S25 and S26 have the same meaning, and will not be repeated when they appear again later.
  • Table 20 shows the design parameters of each aspherical lens element of the optical lens 10 of the present embodiment.
  • the second lens 112 , the third lens 113 and the fourth lens 114 of the first lens group 11 and the first lens 121 , the second lens 122 and the third lens 123 of the second lens group 12 All are aspherical lenses.
  • the second lens 112 that is, the second lens 112 , the third lens 113 , and the fourth lens 114 of the first lens group 11 , and the first lens 121 , the second lens 122 , and the third lens 123 of the second lens group 12 can be designed .
  • the second lens 112 that is, the second lens 112 , the third lens 113 , and the fourth lens 114 of the first lens group 11 , and the first lens 121 , the second lens 122 , and the third lens 123 of the second lens group 12 can be designed .
  • the optical lens 10 of the present embodiment is obtained according to the design parameters of the above-mentioned lenses.
  • Table 21 shows the basic parameters of the optical lens 10 of the present embodiment.
  • f23 is the focal length of the third lens 123 of the second lens group 12 . It should be noted that, in this application, symbols such as f23 have the same meaning, and will not be repeated when they appear again in the future.
  • the total optical length of the optical lens 10 is 15.909 mm.
  • the image side of the lens in the first lens group 11 closest to the second lens group 12 and the object side of the lens in the second lens group 12 closest to the first lens group 11 The distance d between them is the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 .
  • the distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 1 mm; when the optical lens 10 is in the macro shooting state, The distance between the image side S16 of the third lens 113 and the object side S21 of the first lens 121 is 2.3 mm.
  • the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 is 1.3 mm, and the short-distance movement can meet the application requirements of the optical lens 10 in different scenarios, which is very important for driving the first lens group 10 .
  • the requirements of the driving structure for the movement of the two lens groups 12 are relatively small.
  • the ratio of the distance ⁇ d that the second lens group 12 can move relative to the first lens group 11 to the total optical length TTL of the optical lens 10 is 0.08.
  • of the first lens group 11 and the second lens group 12 of the optical lens 10 is 0.79, and the focal length ratio of the first lens group 11 of the optical lens 10 to the optical lens 10
  • the second lens group 12 can cooperate with the first lens group 11 to correct the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .
  • the absolute value of the focal length of the first lens group 11 is smaller than the absolute value of the focal length of the second lens group 12, that is, the refractive power of the first lens group 11 is stronger than that of the second lens group 12, and the first lens group 11 has a stronger refractive power.
  • the lens group 11 has a stronger light adjustment ability, and the second lens group 12 has less effect on light adjustment, thereby reducing the difference in the light adjustment effect of the optical lens 10 when the second lens group 12 moves between different positions, ensuring that When the second lens group 12 is moved to adjust the focal length of the optical lens 10 to achieve telephoto and macro photography, the imaging effect of the optical lens 10 can always be good.
  • the ratio of the focal length of the first lens 111 to the second lens 112 in the first lens group 11 is
  • the focal length can be reasonably allocated, so that the optical lens 10 can have a good imaging effect.
  • the focal power of the first lens 111 is smaller than the focal length of the second lens 112 , that is, the first lens 111 can have a better light converging effect, so as to collect more external light to the optical lens 10 . Inside, the incident light amount of the optical lens 10 is increased, so that the optical lens 10 has a better imaging effect.
  • the ratio of the focal length of the first lens 121 of the second lens group 12 to the lens closest to the image side is
  • the focal lengths of the first lens 121 and the lens closest to the image side (ie, the third lens 123 ) can be reasonably distributed, so that the second lens group 12 can have a better light adjustment effect, so that the second lens group 12 A better focal length adjustment effect can be achieved, so as to move in the axial direction to achieve a better effect of adjusting the focal length of the optical lens 10, ensuring that the optical lens 10 can have a better shooting effect under different usage requirements.
  • the absolute value of the focal length of the first lens 121 of the second lens group 12 is smaller than the absolute value of the focal length of the lens closest to the image side (ie the third lens 123 ), that is, the second lens group 12
  • the degree of refraction of the first lens 121 is relatively high. Therefore, during the axial movement of the second lens group 12, the light incident from the first lens group 11 to the second lens group 12 passes through the first lens 121. The latter light can be adjusted at the first time, so as to ensure good adjustment in different usage scenarios by using as few lenses as possible, so as to ensure that the optical lens 10 can have good imaging effects in different usage scenarios.
  • of the second lens group 12 is 3.57, wherein the ratio ⁇ of the incident angle to the exit angle of the light on the second lens group 12 is 2.14.
  • the focal length and light control capability of the second lens group 12 are within an appropriate range, so that a better focal length adjustment effect can be achieved, so that the optical lens 10 can achieve better performance in different usage scenarios. Imaging effect.
  • FIG. 32 shows the vertical-axis spherical aberration curves of light with wavelengths of 656 nm, 587 nm, and 486 nm after passing through the optical lens 10 of the seventh embodiment.
  • the ordinate of Figure 32 represents the actual image height, in millimeters; the abscissa represents the chromatic aberration along the vertical axis, in millimeters.
  • FIG. 33 is a graph showing the astigmatic field curve of light with a wavelength of 555 nm after passing through the optical lens 10 of the seventh embodiment.
  • FIG. 33 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • FIG. 34 is a distortion diagram of light having a wavelength of 555 nm passing through the optical lens 10 of the seventh embodiment. The ordinate in FIG.
  • the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the seventh embodiment, in %.
  • the vertical axis spherical aberration of light with different wavelengths after passing through the optical lens 10 of this embodiment is also controlled within a small range.
  • the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in both the sagittal direction and the meridional direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small. It can be seen from FIG.
  • the distortion of the light after passing through the optical lens 10 of the present embodiment is small, that is, the distortion of the image formed by the optical lens 10 of the present embodiment is small. Therefore, in this embodiment, the posterior vertical axis spherical aberration, astigmatic field curvature and distortion of light passing through the optical lens 10 of this embodiment are all small, that is, the optical lens 10 of this embodiment can achieve better imaging effects.

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Abstract

本申请提供了一种光学镜头、摄像头模组和电子设备。该光学镜头包括第一镜片组及第二镜片组，第一镜片组及第二镜片组均包括多片镜片。在不同的使用场景下，可以相应的移动第二镜片组，以改变第一镜片组与第二镜片组之间的距离，从而改变光学镜头的焦距，以保证在不同的使用场景下，通过本申请的光学镜头均能够实现良好的拍摄效果。本申请中，将第二镜片组设置于第一镜片组的后焦长度范围内，使得本申请的光学镜头的光学总长能够较短，以使得光学镜头能够适用于薄型化的电子设备内。

Description

光学镜头、摄像头模组和电子设备
本申请要求于2021年4月28日提交中国专利局、申请号为202110479020.1，发明名称为“光学镜头、摄像头模组和电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施方式涉及镜头领域，具体涉及一种光学镜头、摄像头模组和电子设备。
背景技术
随着人们对镜头拍摄场景的要求越来越多元和复杂，镜头需要满足在不同的场景下均能够完成高质量的拍摄效果。例如，在摄影镜头中，长焦镜头(焦距变长)能够拍摄远距离物体，在提供高放大率的同时，也保证好的成像质量。然而，当用户使用长焦镜头去拍摄近景的景物时，长焦镜头的拍摄效果较差。与之相对应，微距镜头在拍摄近景微距场景中能够展现出极强的能力，但是在拍摄远距离场景中拍摄图像的质量较差。
为了解决摄像镜头在拍摄过程中对于不同位置的景物的拍摄不兼容的问题，保证在不同的拍摄场景下均能够实现高质量的拍摄效果。一般会在电子设备中设置多个镜头，通过不同的镜头对应不同的场景，从而保证在不同的场景下均能够有较好的拍摄效果。例如，一般的电子设备会同时包括有远距镜头及微距镜头，通过远距镜头对远处的景物进行拍摄，通过微距镜头对近处的景物进行拍摄，从而保证在不同的场景下均能够具有较好的拍摄效果。但是多个镜头占用的空间较大，且设置多个镜头，使得电子设备的结构较为复杂，从而增加电子设备的制作成本。
发明内容
本申请实施方式提供一种光学镜头、包括所述光学镜头的摄像头模组、以及包括所述摄像头模组的电子设备，旨在通过一个光学镜头适用不同的拍摄场景，从而减小光学镜头占用的空间，并能够简化电子设备的结构，降低电子设备的制作成本。
第一方面，本申请提供一种光学镜头，该光学镜头包括自物侧至像侧排列的第一镜片组及第二镜片组，且所述第一镜片组及所述第二镜片组同轴设置；所述第一组及所述第二镜片组均包括多片镜片，每片所述镜片均包括朝向所述物侧的物侧面及朝向所述像侧的像侧面；所述第一镜片组具有正光焦度，所述第二镜片组具有负光焦度；所述第二镜片组可沿轴向相对所述第一镜片组移动，所述第二镜片组可相对所述第一镜片组移动的距离Δd满足：Δd≤4mm。其中第一镜片组及第二镜片组同轴设置是指第一镜片组的光轴与第二镜片组的光轴共线。
本申请中，在不同的使用场景下，相应的移动第二镜片组，以改变第一镜片组与第二镜片组之间的距离，从而改变光学镜头的焦距，从而保证在不同的使用场景下，通过本申请的光学镜头均能够实现良好的拍摄效果。本申请是以镜片组为单位移动，第二镜片组可以相对于第一镜片组移动，单个镜片组内的镜片之间的距离可保持不动，而现有技术是每个镜片之间均可以移动，所以镜片之间的距离需要较大，光学总长更长。并且，本申请中，第一镜片组和第二镜片组自物侧至像侧排列，即“物侧-第一镜片组-第二镜片组-像侧”的排列顺序。 第二镜片组位于第一镜片组和像侧之间，即第二镜片组设置于第一镜片组的后焦长度范围内，相较于调整光学镜头的各片镜片之间的距离以实现光学镜头改变的方案来说，本申请的光学镜头的光学总长能够较短，以使得光学镜头能够适用于薄型化的电子设备内。
并且，本申请中，第一镜片组与第二镜片组的光焦度正负配合，能够实现较好的消除像差的作用，从而实现较好的光学效果。并且，第一镜片组的光焦度正光焦度，能够将外界的光线进行会聚，以使得光线尽量多的汇聚光学镜头中。第二镜片组的光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件上的成像的像高，使得光学镜头能够匹配大主光线入射角的感光元件，提高光学镜头的成像解析力。
本申请一些实施方式中，所述第二镜片组可相对所述第一镜片组移动的距离Δd满足：Δd＜4mm，也即第一镜片组与第二镜片组之间的相对移动在0-4mm之间变化即能够满足光学镜头在不同的拍摄场景下的需求，从而保证光学镜头在不同的应用场景下均能够具有较小的光学总长，使得本申请的光学镜头能够更好的应用于手机等薄型化的电子设备内。并且，由于第一镜片组与第二镜片组之间可相对移动的距离较小，因此，对于驱动第二镜片组12移动的驱动结构的要求较小，驱动结构的成本可以更低。且驱动结构的体积也可以更小，从而使得光学镜头能够更加适用于手机等小型化设备中的应用。
一些实施方式中，所述光学镜头满足下列关系式：
TTL≤25mm，其中，TTL为所述光学镜头的光学总长。换句话说，本申请的光学镜头的光学总长在不同的应用场景下(包括远距及微距的应用场景)均小于或等于25mm，即本申请的光学镜头的光学总长在不同应用场景下均能够较小，从而能够更好的应用于手机等薄型化的电子设备内。
一些实施方式中，所述光学镜头满足下列关系式：
0<Δd/TTL≤0.25。其中，Δd为所述第二镜片组可相对所述第一镜片组移动的距离，TTL为所述光学镜头的光学总长。
本申请实施方式中，光学镜头满足上述关系式，能够保证光学镜头在不同的使用场景下均能够有较小的光学总长的同时，保证光学镜头在不同的使用场景下切换时，第一镜片组与第二镜片组之间的移动距离能够较小，进一步使得光学镜头能够更好的适用于手机等薄型化的电子设备中。
一些实施方式中，所述光学镜头满足下列关系式：
F#≥2。其中，F#为所述光学镜头的光圈F值。
光学镜头的光圈F值为镜头的焦距与镜头口径的直径的比值。本申请实施方式中，光学镜头的镜头口径能够保证光学镜头能够有合适的入光量，从而光学镜头能够具有较好的光学成像效果。并且，当光学镜头的光圈F值满足上述关系式时，光学镜头的焦距均能够满足光学镜头对于不同的应用场景(包括远距拍摄及微距拍的)的需求。
本申请一些实施方式中，光学镜头的镜头口径可以小于20mm。
一些实施方式中，所述第一镜片组位置固定，第二镜片组移动以靠近或远离第一镜片组，从而实现第二镜片组与第一镜片组的相对移动，以保证光学镜头能够在不同的应用场景下能够进行拍摄的同时，能够有较小的光学总长。并且，本实施方式中，第一镜片组的位置固定，从而保证第一镜片组与入光位置(例如入光孔)之间的相对位置保持不变，保证在光学镜头的不同应用场景下，从入光位置进入光学镜头的入光量均能够保持不变，换句话说，能够保证光学镜头在不同应用场景下的进光量，从而保证光学镜头在不同应用场景下的拍摄效果。
一些实施方式中，所述第一镜片组的镜片包括自物侧至像侧依次设置的第一镜片及第二 镜片，所述第一镜片具有正光焦度，所述第二镜片具有负光焦度，所述第一镜片组除所述第一镜片及所述第二镜片外的其它镜片的组合光焦度为正光焦度。其中，所述第一镜片组除所述第一镜片及所述第二镜片外的其它镜片的组合光焦度是指所述第一镜片组除所述第一镜片及所述第二镜片外的其它镜片作为一个整体时，该整体的光焦度。例如，当第一镜片组包括第一镜片、第二镜片、第三镜片及第四镜片时，所述第一镜片组除所述第一镜片及所述第二镜片外的其它镜片的组合光焦度即指第三镜片与第四镜片作为整体时的光焦度。
本申请实施方式中，所述第一镜片组的镜片包括自物侧至像侧依次设置的第一镜片及第二镜片，所述第一镜片具有正光焦度，所述第二镜片具有负光焦度，所述第一镜片组除所述第一镜片及所述第二镜片外的其它镜片的组合光焦度为正光焦度，即第一镜片组的各镜片的光焦度正负搭配，从而能够实现更好的校正相差的效果。并且，第一镜片具有正光焦度，具有聚光作用，能够更多的将外界的光线汇聚至光学镜头内，增加光学镜头的入光量，以实现更好的拍照效果。
一些实施方式中，所述第二镜片组的镜片包括自物侧至像侧依次设置的第一片镜片，所述第一片镜片为弯月镜片，所述第一片镜片的像侧面为凹面。
本申请实施方式中，所述第二镜片组的第一片镜片为弯月镜片，即所述第一片镜片的物侧面为凸面、像侧面为凹面，或者所述第一片镜片的物侧面为凹面、像侧面为凸面。而本申请一些实施方式中，所述第一片镜片的像侧面为凹面，则所述第一片镜片的物侧面为凸面，从而能够使经第一镜片组后传输至第二镜片组内的光线扩散至更广的范围，起到一定的消除场曲的作用，从而使得光学镜头能够具有更好的拍摄效果。
一些实施方式中，所述第一镜片组包括3-4片镜片，所述第二镜片组包括2-3片所述镜片。
本申请实施方式中，第一镜片组包括3-4片镜片，第二镜片组包括2-3片镜片，能够保证光学镜头具有良好的光学效果的同时，尽量的减小光学镜头的光学总长，以使得本实施方式的光学镜头能够更加的适用于薄型的电子设备内。
一些实施方式中，所述光学镜头满足下列关系式：
0.4<|f1/f2|<1.1；
其中，f1为所述第一镜片组的焦距，f2为所述第二镜片组的焦距。
本申请的光学镜头满足上述关系式，即光学镜头的第一镜片组及第二镜片组的焦距能够得到合理的分配，从而使得光学镜头能够具有良好的成像效果。
本申请的一些实施方式中，第一镜片组的焦距与第二镜片组的焦距的比值的绝对值|f1/f2|小于1，即光学镜头的第一镜片组的焦距小于第二镜片组的焦距，第一镜片组相对于第二镜片组具有更强的光线调整能力，第二镜片组对光线调整作用较小，从而减小第二镜片组在不同位置之间移动时对光学镜头的光线调节效果的差别，保证在移动第二镜片组以调整光学镜头的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头的成像效果始终能够较好。
一些实施方式中，所述光学镜头满足下列关系式：
0.4<|f2/f|<1；
其中，f2为所述第二镜片组的焦距，f为所述光学镜头的所述第一镜片组及所述第二镜片组位置最为接近时的焦距。第一镜片组与第二镜片组相对移动，移动至两个镜片组接触时就是最接近。
本申请的光学镜头满足上述关系式，即光学镜头的第二镜片组的焦距能够得到合理的分配，从而根据光学镜头的实际使用需求移动第二镜头组时，光学镜头的焦距能够得到适应性 的调整以满足不同场景的拍摄需求。并且，第二镜片组能够配合第一镜片组以修正光学镜头的像差，减小畸变情况的产生，提高光学镜头10的成像品质。
一些实施方式中，所述光学镜头的第一镜片组满足下列关系式：
0.2<|f11/f12|<1.1；
其中，f11为所述第一镜片组的所述第一镜片的焦距，f12为所述第一镜片组的所述第二镜片的焦距。
本申请的光学镜头满足上述关系式，即第一镜片组的第一镜片及第二镜片的焦距能够得到合理的分配，从而使得光学镜头能够具有良好的成像效果。
本申请一些实施方式中，第一镜片组的第一镜片的焦距与第二镜片的焦距的比值的绝对值|f11/f12|小于1，即本申请的一些实施方式中，第一镜片组的第一镜片的光焦度的绝对值小于第二镜片的焦距的绝对值，即第一镜片具有较好的屈光能力，能够具有较好的光线汇聚效果，以更多的将外界的光线汇聚至光学镜头内，提高光学镜头的入光量，以使光学镜头具有更好的成像效果。
一些实施方式中，所述光学镜头的所述第二镜片组满足下列关系式：
|f21/f2L|<10；
其中，f21为所述第二镜片组的所述第一片镜片的焦距，f2L为所述第二镜片组中最靠近所述像侧的所述镜片的焦距。
本申请的光学镜头满足上述关系式，即第二镜片组的第一片镜片及最靠近像侧的镜片的焦距能够得到合理的分配，从而使得第二镜片组能够有较好的光线调节效果，从而使得第二镜片组能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头的焦距的效果，保证在不同的使用需求时光学镜头均能够有较好的拍摄效果。
本申请的一些实施方式中，第二镜片组的第一片镜片及最靠近像侧的镜片的焦距比值的绝对值|f21/f2L|小于1，即第二镜片组的第一片镜片的焦距绝对值小于最靠近像侧的镜片的焦距绝对值，因此，第二镜片组的第一片镜片屈光的程度较高，因此，从第一镜片组入射传输至第二镜片组的光线经第一片镜片后能够得到尽快的调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头均能够有良好的成像效果。
一些实施方式中，所述光学镜头的所述第二镜片组满足下列关系式：
1.4<|1-β^2|<3.8；
其中，β为光线在所述第二镜片组上的入射角度与出射角度的比值，1-β^2为所述第二镜片组的焦距敏感度。
本申请实施方式中，焦距敏感度决定了光线的调控能力的大小，影响镜片组的焦距。本实施方式中，第二镜片组的焦距敏感度满足上述关系式时，第二镜片组的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头能够在不同的使用场景下均能够实现较好的成像效果。
一些实施方式中，所述第一镜片组中最靠近所述物侧的镜片为玻璃材质，所述第一镜片组中最靠近所述物侧的镜片为球面镜片。
本申请实施方式中，第一镜片组中至少一片镜片采用玻璃镜片，其它的镜片为玻璃镜片或者塑料镜片。由于玻璃镜片的相对折射率温度系数较低，即玻璃镜片的折射率随着温度变化的程度较小，因此，本申请的光学镜头相较于全部采用塑料镜片的光学镜头来说，温漂系数会大大减小。并且，一般来说，玻璃镜片的折射率随温度变化关系满足：dn/dT>0；塑料镜 片的折射率随温度变化关系满足：dn/dT＜0，当温度发生变化时，玻璃镜片与塑料镜片之间会产生补偿，从而减小光学镜头的温漂。并且，本实施方式中，第一镜片组中最靠近物侧的镜片一般离外界的距离最近，从而受到温度的影响最大，因此，将其设置为玻璃镜片，能够最大程度的减小光学镜头的温漂。
并且，本申请实施方式中，第一镜片组中最靠近所述物侧的镜片为球面镜片，即材质为玻璃材质的可以镜片可以采用球面镜片，相较于非球面镜片来说，镜片的加工能够更加的简单。
一些实施方式中，所述第一镜片组的多片所述镜片中至少包括4个非球面；所述第二镜片组的所述镜片均为非球面镜片，从而保证光学镜头的各个镜片有更高的表面自由度，可以将镜片的表面根据需求进行任意设计，进而能够减小光学镜头的像差、场曲等问题，从而使得光学镜头有更好的成像效果。
一些实施方式中，第一镜片组除最靠近所述物侧的镜片外的其他镜片均为非球面镜片，第二镜片组的所述镜片也均为非球面镜片，从而保证光学镜头的各镜片均具有较高的自由度，从而能够减小更好的消像差、场曲等光学问题，以保证光学镜头能够有更好的成像效果。
一些实施方式中，所述光学镜头还包括光路偏折元件，光路偏折元件能够改变光线的传输方向。所述光路偏折元件设于所述第一镜片组件远离所述第二镜片组件的一侧，光线经所述光路偏折组件折叠后依次经所述第一镜片组件及所述第二镜片组件出射。
本申请实施方式中，光学镜头可以为潜望式的镜头，即第一镜片组及第二镜片组的轴向方向可以与电子设备的厚度方向垂直，从而避免第一镜片组及第二镜片组的轴上距离对电子设备的厚度的影响。电子设备外的光线可以沿电子设备的厚度方向入射至光学镜头内，再经光学镜头的光路偏折元件折叠后依次经所述第一镜片组件及所述第二镜片组件后，再出射至感光元件上成像。
可以理解的是，本申请的其它一些实施方式中，由于本申请的光学镜头的光学总长可以做到较短，也可以直接将光学镜头的轴向方向与电子设备的厚度方向相同设置，此时，电子设备外的光线不需要经过折叠后进入第一镜片组及第二镜片组，即光学镜头可以没有光路偏折元件。
第二方面，本申请还提供一种摄像头模组，该摄像头模组包括感光元件和上述的光学镜头，所述感光元件位于所述光学镜头的像侧，光线经所述光学镜头后投射至所述感光元件；所述第一镜片组件与所述感光元件之间的距离保持不变，所述第二镜片组件可沿光轴在所述第一镜片组件与所述感光元件之间移动。
通过感光元件将经过光学镜头后得到的光学图像转为电信号，再进行图像处理等后续步骤，从而能够得到成像质量较好的像。并且，本申请的光学镜头的第一镜片组与感光元件之间的距离保持不变，通过移动位于第一镜片组与感光元件之间的第二镜片组，从而改变光学镜头的焦距，从而保证在不同的使用场景下，通过本申请的光学镜头均能够实现良好的拍摄效果。并且，本申请中，将第二镜片组设置于第一镜片组的后焦长度范围内，相较于调整光学镜头的各片镜片之间的距离以实现光学镜头改变的方案来说，本申请的光学镜头的光学总长能够较短，以使得光学镜头能够适用于薄型化的电子设备内。
第三方面，本申请还提供一种电子设备，该电子设备包括图像处理器和上述的摄像头模组，所述图像处理器与所述摄像头模组通信连接，所述摄像头模组用于获取图像数据并将所述图像数据输入到所述图像处理器中，所述图像处理器用于对输出其中的所述图像数据进行处理。
本申请中，通过图像处理器实现对摄像头模组的图像数据进行处理，以得到更好的拍摄图片或影像。并且，本申请的光学镜头能够在不同的使用场景下变焦，从而在不同的使用需求(远距拍摄及微距拍摄)下均能够得到较好的成像效果。并且，本申请的光学镜头的光学总长可以较小，因此，光学镜头对电子设备的厚度限制会较小，即电子设备能够实现更好的薄型化效果。
附图说明
图1为本申请一种实施方式的电子设备的结构示意图。
图2为本申请另一种实施方式的电子设备的结构示意图。
图3为图2所示电子设备的成像原理示意图。
图4为本申请一些实施方式的摄像头模组的结构示意图。
图5为图1所示本申请实施方式的电子设备沿I-I截开后的部分截面示意图。
图6为本申请的另一种实施方式的电子设备沿图1中I-I截开后的部分截面示意图。
图7a为本申请第一实施方式的光学镜头用于远距拍摄时的结构示意图。
图7b为本申请第一实施方式的光学镜头用于微距拍摄时的结构示意图。
图8为波长分别为656nm、587nm、486nm的光经过本申请第一实施方式的光学镜头后的垂轴球差曲线图。
图9为波长为555nm的光经本申请第一实施方式的光学镜头后的像散场曲图。
图10为波长为555nm的光经过本申请第一实施方式的光学镜头的畸变图。
图11a为本申请第二实施方式的光学镜头用于远距拍摄时的结构示意图。
图11b为本申请第二实施方式的光学镜头用于微距拍摄时的结构示意图。
图12为波长分别为656nm、587nm、486nm的光经过本申请第二实施方式的光学镜头后的垂轴球差曲线图。
图13为波长为555nm的光经本申请第二实施方式的光学镜头后的像散场曲图。
图14为波长为555nm的光经过本申请第二实施方式的光学镜头的畸变图。
图15a为本申请第三实施方式的光学镜头用于远距拍摄时的结构示意图。
图15b为本申请第三实施方式的光学镜头用于微距拍摄时的结构示意图。
图16为波长分别为656nm、587nm、486nm的光经过本申请第三实施方式的光学镜头后的垂轴球差曲线图。
图17为波长为555nm的光经本申请第三实施方式的光学镜头后的像散场曲图。
图18为波长为555nm的光经过本申请第三实施方式的光学镜头的畸变图。
图19a所示为本申请第四实施方式的光学镜头用于远距拍摄时的结构示意图。
图19b所示为本申请第四实施方式的光学镜头用于微距拍摄时的结构示意图。
图20为波长分别为656nm、587nm、486nm的光经过本申请第四实施方式的光学镜头后的垂轴球差曲线图。
图21为波长为555nm的光经本申请第四实施方式的光学镜头后的像散场曲图。
图22为波长为555nm的光经过本申请第四实施方式的光学镜头的畸变图。
图23a为本申请第五实施方式的光学镜头用于远距拍摄时的结构示意图。
图23b为本申请第五实施方式的光学镜头用于微距拍摄时的结构示意图。
图24为波长分别为656nm、587nm、486nm的光经过本申请第五实施方式的光学镜头后的垂轴球差曲线图。
图25为波长为555nm的光经本申请第五实施方式的光学镜头后的像散场曲图。
图26为波长为555nm的光经过本申请第五实施方式的光学镜头的畸变图。
图27a为本申请第六实施方式的光学镜头用于远距拍摄时的结构示意图。
图27b为本申请第六实施方式的光学镜头用于微距拍摄时的结构示意图。
图28为波长分别为656nm、587nm、486nm的光经过本申请第六实施方式的光学镜头后的垂轴球差曲线图。
图29为波长为555nm的光经本申请第六实施方式的光学镜头后的像散场曲图。
图30为波长为555nm的光经过本申请第六实施方式的光学镜头的畸变图。
图31a为本申请第七实施方式的光学镜头用于远距拍摄时的结构示意图。
图31b为本申请第七实施方式的光学镜头用于微距拍摄时的结构示意图。
图32为波长分别为656nm、587nm、486nm的光经过本申请第七实施方式的光学镜头后的垂轴球差曲线图。
图33为波长为555nm的光经本申请第七实施方式的光学镜头后的像散场曲图。
图34为波长为555nm的光经过本申请第七实施方式的光学镜头的畸变图。
具体实施方式
为方便理解，在结合附图对本申请各个实施例进行描述前，先对本申请所涉及的技术术语进行解释和描述。
焦距(focal length，简称f)，也称为焦长，是光学系统中衡量光的聚集或发散的度量方式，指无限远的景物通过镜片或镜片组在焦平面结成清晰影像时，镜片或镜片组的光学中心至焦平面的垂直距离。
光圈，是用来控制光线透过镜头照射至感光元件的光量的装置。表达光圈大小用F数/F值表示。
光圈F值(F#)，是镜头的焦距/镜头通光直径得出的相对值(相对孔径的倒数)。光圈F值愈小，在同一单位时间内的进光量便愈多；光圈F值越大，景深越小，拍照的背景内容将会虚化。
正光焦度，也可以称为正折光力，表示镜片有正的焦距、有会聚光线的效果。
负光焦度，也可以称为负折光力，表示镜片有负的焦距、有发散光线的效果。
光学总长(total track length，TTL)，指从光学镜头远离成像面的一端至成像面的总长度，是形成电子设备的厚度的主要因素。本申请中，光学总长是指在光学镜头的光轴上，第一镜头组的第一镜片的物侧面至感光元件的距离。
成像面：成像是指光线经过折射、衍射或由小孔直线传播而在光屏投下的实像，成像面是指成像所在的平面。
阿贝数，即色散系数，是光学材料在不同波长下的折射率的差值比，代表材料色散程度。
半像高(image height，IH)，即成像圆的半径。
光轴，是一条假想的线，定义光学系统如何传导光线，光轴一般是垂直穿过镜片中心的光线。
物侧，以光学镜头为界，景物所在的一侧为物侧。
像侧，以光学镜头为界，景物的成像所在的一侧为像侧。
物侧面，镜片朝向物侧的表面称为物侧面。
像侧面，镜片朝向像侧的表面称为像侧面。
后焦长度(back focal length，BFL)，即光学镜头的最靠近像侧的一片镜片的像侧面至成像面之间的轴上距离。
畸变(distortion)是指图像中点的实际显示位置与它们在理想系统中所处位置之间的差距。
视场角(field of view，FOV)是指以光学仪器的镜头为顶点，以被测目标的物像可通过镜头的最大范围的两条边缘构成的夹角。
自由曲面，是指不能由初等解析曲面组成，而由复杂方式自由变化的曲线曲面即所谓的自由曲线曲面组成的曲面。
本申请提供一种电子设备，电子设备可以为手机、平板、电脑、摄像机、照相机或其他形态的具有拍照或摄像功能的电子设备。请参阅图1，图1所示为本申请一种实施方式的电子设备1000的结构示意图。本实施方式中，电子设备1000为手机。其它实施方式中，电子设备1000可以为平板、照相机等其它形态的具有拍摄功能的设备。
电子设备1000可以包括摄像头模组100以及与摄像头模组100通信连接的图像处理器200。摄像头模组100用于获取图像数据并将图像数据输入到图像处理器200中，以便图像处理器200对图像数据进行处理。其中，摄像头模组100与图像处理器200的通信连接可以包括通过走线连接等电连接方式进行数据传输，也可以通过光缆连接或无线传输等其它能够实现数据传输的方式实现通信连接。
图像处理器200可以通过一系列复杂的数学算法运算，对数字图像信号进行优化处理，最后把处理后的信号传到显示器上或存储至存储器中。图像处理器200可以是图像处理芯片或数字信号处理(digital signal processing，DSP)芯片。
图1所示实施方式中，摄像头模组100可以设于电子设备1000的背面，为电子设备1000的后置摄像头。本申请中，电子设备1000包括后盖板1001，后盖板1001上开设有入光孔1002，电子设备1000外的光线经入光孔1002入射至摄像头模组100中的光学镜头10。应理解，图1所示实施方式的电子设备1000的摄像头模组100的安装位置仅仅是示意性的。在一些其他的实施方式中，摄像头模组100也可以安装于电子设备1000上的其他位置。例如，摄像头模组100可以安装于电子设备1000的正面，作为电子设备1000的前置摄像头。或者，摄像头模组100可以安装于电子设备1000的背面的上部中间或右上角；或者，摄像头模组100还可以不设置在手机主体上，而设置在相对手机可移动或转动的部件上，例如该部件可以从手机主体上外伸、收回或旋转等。本申请对摄像头模组100的安装位置不做任何限定。
请参阅图2，图2是本申请另一种实施方式的电子设备1000的结构示意图。图2中摄像头模组100、入光孔1002以及光学镜头10和图1中的相同，在此不做赘述。在图2所示的实施方式中，相比于图1，电子设备1000还包括模数转换器(digital analog converter，DAC)300。请参见图2，模数转换器300连接于摄像头模组100与图像处理器200之间。模数转换器300用于将摄像头模组100产生的模拟图像信号转换为数字图像信号并传输至图像处理器200，再通过图像处理器200对数字图像信号进行处理，最终通过显示屏或者显示器进行图像或者影像显示。
一些实施方式中，电子设备1000还可以包括存储器400，存储器400与图像处理器200通信连接，图像处理器200对图像数字信号加工处理以后再将图像传输至存储器400中，以便于在后续需要查看图像时能够随时从存储中查找图像并在显示屏上进行显示(请参见图2)。一些实施方式中，图像处理器200还会对处理后的图像数字信号进行压缩，再存储至存储器400中，以节约存储器400空间。需要说明的是，图2仅为本申请实施方式的结构示意图， 其中所示的摄像头模组100、图像处理器200、模数转换器300、存储器400的位置结构等均仅为示意。
请参阅图3，图3为图2所示电子设备1000的成像原理示意图。摄像头模组100包括光学镜头10以及感光元件20。感光元件20位于光学镜头10的像侧。其中，光学镜头10的像侧是指光学镜头10靠近景物的成像的一侧。当摄像头模组100进行工作时，景物通过光学镜头10在感光元件20上成像。具体的，摄像头模组100的工作原理为：景物反射的光线L通过光学镜头10生成光学图像并投射到感光元件20的表面，感光元件20将光学图像转为电信号即模拟图像信号S1并将转换得到的模拟图像信号S1传输至模数转换器300，以通过模数转换器300转换为数字图像信号S2给图像处理器200。
感光元件20是一种半导体器件，表面可包含有几十万到几百万的光电二极管，受到光照射时，会产生电荷，从而完成将光学信号转化为电信号。可选的，感光元件20可以为任意能够将光学信号转化为电信号的器件。例如，感光元件20可以是电荷耦合元件(charge coupled device，CCD)，也可以是互补金属氧化物导体器件(complementary metal-oxide semiconductor，CMOS)。
光学镜头10影响成像质量和成像效果。光学镜头10包括从物侧至像侧排列的多片镜片，其主要利用镜片的折射原理进行成像。具体的，待成像物体的光线通过光学镜头10在焦平面上形成清晰的影像，并通过位于成像面上的感光元件20记录景物的影像。相邻的镜片之间可以具有间隔，也可以紧贴设置。各片镜片起到的主要作用不同，通过不同镜片之间的配合以得到最佳的成像质量。
本申请的一些实施方式中，光学镜头10还包括用于校正色彩偏差的滤光片30，滤光片30位于感光元件20与光学镜头10的镜片之间。经光学镜头10的各镜片折射后的光线照射至滤光片30上，并经滤光片30传输至感光元件20。滤光片30可以滤掉不必要投射至感光元件20上的光线，防止感光元件20产生伪色或波纹，以提高其有效分辨率和彩色还原性，并能够避免外界的一些特定光线对感光元件20的损坏，保护感光元件20。
本申请的一些实施方式中，光学镜头10也可以包括用于保护感光元件20的保护元件，保护元件位于感光元件20与光学镜头10的镜片之间。经光学镜头10的各镜片折射后的光线照射至保护元件上，保护元件能够将光线中对感光元件20造成损坏的特定光线滤过，从而避免外界的一些特定光线对感光元件20的损坏，保护感光元件20。需要说明的是，本申请的滤光片30及保护元件均为平板结构，不会对光线的传输方向有影响，从而能够避免滤光片30及保护元件对成像效果产生影响。
可以理解的是，本申请的一些实施方式中，摄像头模组100包括的光学镜头10可以为多个，多个光学镜头10可以适用于不同的使用场景，从而保证摄像头模组100可以在不同的使用场景下均能够有较好的拍摄效果。例如，一些实施方式中，摄像头模组100可以包括适用于夜间拍摄的光学镜头、适用于远距拍摄的光学镜头及适用于广角拍摄的光学镜头等。
本申请实施方式中，如图3所示，光学镜头10包括自物侧至像侧排列的第一镜片组11及第二镜片组12，且第一镜片组11及第二镜片组12同轴设置。其中，第一镜片组11及第二镜片组12同轴设置是指第一镜片组11的光轴与第二镜片组12的光轴共线。电子设备1000外的光线经入光孔1002入射后进入依次经过第一镜片组11及第二镜片组12对光线的折射后照射至感光元件20上进行成像。第一镜片组11及第二镜片组12均包括多片镜片。本实施方式中，第一镜片组11的位置固定，即第一镜片组11与感光元件20的相对位置保持不变，第二镜片组12可沿其光轴的方向相对第一镜片组11移动。
本申请中，在不同的使用场景下，相应的移动第二镜片组12，能够改变第一镜片组11与第二镜片组12之间的距离，从而改变光学镜头10的焦距，进而可以保证在不同的使用场景下，本申请的光学镜头10均能够实现良好的拍摄效果。例如，本申请的一些实施方式中，所述光学镜头10可以处于远距拍摄状态及微距拍摄状态。所述第二镜片组12相对所述第一镜片组11移动时，光学镜头10在所述远距拍摄状态及所述微距拍摄状态之间进行切换。具体的，光学镜头10处于远距拍摄状态时，第二镜片组12移动以靠近第一镜片组11，以调整光学镜头10的焦距，从而保证能够有较好的远距拍摄效果；光学镜头10处于微距拍摄状态时，第二镜片组12移动以远离第一镜片组11，以调整光学镜头10的焦距，从而保证能够有较好的远距拍摄效果。
本申请一些实施方式中，电子设备1000还可以包括驱动结构，驱动结构与第二镜片组12连接，以通过驱动结构驱动第二镜片组12移动，从而改变第一镜片组11与第二镜片组12之间的距离。一些实施方式中，该驱动结构可以为微型电机。
本申请中，将第二镜片组12设置于第一镜片组11的后焦长度范围内，相较于调整光学镜头10的各片镜片之间的距离以实现光学镜头10改变的方案来说，本申请的光学镜头10的第一镜片组11包括的各镜片之间由于不需要移动，因此，第一镜片组11的各镜片之间的距离可以较小。同样的，本申请的光学镜头10的第二镜片组12包括的各镜片之间由于不需要移动，因此，第二镜片组12的各镜片之间的距离可以较小，进而使得光学镜头10的光学总长TTL能够较短，以使得光学镜头10能够适用于薄型化的电子设备1000内。其中，本申请实施方式的光学总长TTL是指在光学镜头10的光轴上，第一镜片组11的第一镜片的物侧面至感光元件20的距离。本申请一些实施方式中，光学镜头10的光学总长TTL可以小于25mm，能够适用手机、平板等薄型化的电子设备1000内。
并且，本申请实施方式中，第一镜片组11的位置固定，即光学镜头10的第一镜片组11与入光孔1002之间的距离保持不变，从而保证在光学镜头10的不同应用场景下，从入光孔1002进入光学镜头10的入光量均能够保持不变，换句话说，能够保证光学镜头10在不同应用场景下的进光量，从而保证光学镜头10在不同应用场景下的拍摄效果。可以理解的是，本申请的其他一些实施方式中，光学镜头10的第一镜片组11也可以移动，以通过第一镜片组11与第二镜片组12的配合移动以使光学镜头10适应不同的应用场景(包括远距拍摄及微距拍摄)的需求，保证光学镜头10在不同的应用场景下均能够有较好的拍摄效果。
本申请一些实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd满足：Δd＜4mm，也即第一镜片组11与第二镜片组12之间的相对移动在0-4mm之间变化即能够满足光学镜头10在不同的拍摄场景下的需求，从而保证光学镜头10在不同的应用场景下均能够具有较小的光学总长，使得本申请的光学镜头10能够更好的应用于手机等薄型化的电子设备内。并且，由于第一镜片组11与第二镜片组12之间可相对移动的距离较小，因此，对于驱动第二镜片组12移动的驱动结构的要求较小，驱动结构的成本可以更低。且驱动结构的体积也可以更小，从而使得光学镜头能够更加适用于手机等小型化设备中的应用。
本申请一些实施方式中，所述光学镜头10还可以满足0<Δd/TTL≤0.25。其中，Δd为所述第二镜片组12可相对所述第一镜片组11移动的距离，TTL为所述光学镜头10的光学总长。由于本申请的TTL的取值较小，当Δd/TTL满足上述范围时，Δd会较小，则第一镜片组11与第二镜片组12之间的移动距离能够较小。因此能够保证光学镜头10在不同的使用场景下均能够有较小的光学总长的同时，保证光学镜头10在不同的使用场景下切换时，第一镜片组11与第二镜片组12之间的移动距离能够较小，进一步使得光学镜头10能够更好的适用于手 机等薄型化的电子设备中。
图4所示为本申请一些实施方式的摄像头模组100的结构示意图。在前述图3及其实施方式中提到，第二镜片组12可相对于第一镜片组11的移动，下面可参阅图4进一步理解。本申请一些实施方式中，相比于图3，光学镜头10还包括第一镜筒10a及第二镜筒10b，第二镜筒10b安装于第一镜筒10a内，且第二镜筒10b能够在第一镜筒10a内沿第一镜筒10a的轴向移动。第一镜筒10a与第二镜筒10b同轴设置，即第一镜筒10a的中心轴与第二镜筒10b的中心轴共线。光学镜头10的第一镜片组11的多片镜片固定于第一镜筒10a内，且第一镜片组11的多片镜片同轴设置；光学镜头10的第二镜片组12的多片镜片固定于镜筒10a内且固定于第二镜筒10b内，且第二镜片组12的多片镜片同轴设置。第二镜筒10b在第一镜筒10a内沿第一镜筒10a的轴向移动，能够带动固定于第二镜筒10b内的第二镜片组12相对第一镜片组11进行移动。可以理解的是，本申请的其它一些实施方式中，光学镜头10还可以为其它的结构，以实现第二镜片组12相对于第一镜片组11的移动，本申请对其不进行具体限制。
本申请实施方式中，摄像头模组100还包括线路板50等结构。线路板50固定于第一镜筒10a朝向像侧的一侧。线路板50用于传输电信号。线路板50可以是柔性电路板(flexible printed circuit，FPC)或印刷电路板(printed circuit board，PCB)，其中，FPC可以是单面柔性板、双面柔性板、多层柔性板或混合结构的柔性电路板等。对于摄像头模组100包括的其他元件在此不再一一详述。滤光片30或保护元件可以固定于光学镜头10的第一镜筒10a朝向像侧的一端，并位于第二镜筒10b与线路板50之间；或者，也可以通过支架支撑固定于线路板50的上方。感光元件20通过键合或者贴片等方式固定于线路板50朝向第一镜筒10a的一面，感光元件20与光学镜头10的镜片相对设置，光学镜头10生成的光学图像能够投射至感光元件20。一些实施方式中，模数转换器300、图像处理器200、存储器400等也通过键合或者贴片等方式集成于线路板50上，从而通过线路板50实现感光元件20、模数转换器300、图像处理器200、存储器400等之间的通信连接。
请重新参阅图3，本申请中，光学镜头10的第一镜片组11及第二镜片组12均包括多片镜片，且光学镜头10的任一镜片可以为具有正光焦度或负光焦度的镜片，从而保证每片镜片均能够起到一定的光学效果，以保证实现光学镜头10所需达到的光学效果的同时，尽量减小光学镜头10的镜片数量，减小光学镜头10的光学总长，从而实现光学镜头10的小型化，使得光学镜头10安装于电子设备1000内时占用的体积较小，且减小光学镜头10对终端的厚度的影响。当在多片镜片之间插入平面镜时，平面镜不算作为本申请的光学镜头10的镜片。例如，在第一镜片组11与第二镜片组12之间插入平面镜时，平面镜不能算作本申请实施方式的光学镜头10的镜片。
本申请实施方式中，通过采用两个镜片组(第一镜片组11及第二镜片组12)相结合，通过移动第二镜片组12，从而调整光学镜头10的焦距，以使光学镜头10能够满足不同的应用场景(如远距拍摄及微距拍摄)。具体的，本申请实施方式中，光学镜头10处于远距拍摄状态时，光学镜头10的第一镜片组11与第二镜片组12之间的距离最近；光学镜头10处于微距拍摄状态时，光学镜头10的第一镜片组11与第二镜片组12之间的距离最远。
本申请一些实施方式中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。通过第一镜片组11与第二镜片组12的光焦度正负配合，能够实现较好的消除像差的作用，从而实现较好的光学效果。并且，本申请实施方式中，第二镜片组12具有负光焦度，能够起到对光线的扩散作用，以保证光学镜头10具有较大的像高，从而使得光学镜头10能够匹配 大主光线入射角的感光元件20，提高光学镜头10的成像解析力。
本申请一些实施方式中，第一镜片组11包括3-4片镜片，第二镜片组12包括2-3片镜片。
本申请实施方式中，第一镜片组11包括3-4片镜片，第二镜片组12包括2-3片镜片，能够保证光学镜头10具有良好的光学效果的同时，尽量的减小光学镜头10的光学总长，以使得本实施方式的光学镜头10能够更加的适用于薄型的电子设备1000内。
可以理解的是，本申请的其它一些实施方式中，第一镜片组11包括的镜片数量也可以为2片或者3片以上，或第二镜片组12的镜片数量也可以为3片以上，但是可能会增加光学镜头10的光学总长，从而影响电子设备1000的厚度等尺寸。
本申请的一些实施方式中，光学镜头10满足关系式：TTL≤25mm。其中，TTL为光学镜头10的光学总长。本申请实施方式中，光学镜头10的光学总长较小、占用的体积较小从而能够适应于手机等薄型化的电子设备1000内。
本申请一些实施方式中，第一镜片组11的镜片包括自物侧至像侧依次设置的第一镜片111及第二镜片112，第一镜片111具有正光焦度，第二镜片112具有负光焦度。第一镜片组11除第一镜片111及第二镜片112外的其它镜片的组合光焦度为正光焦度。例如，本申请的一些实施方式中，第一镜片组11包括三片镜片，除第一镜片111及第二镜片112外的其它镜片即为第三镜片113，因此，第三镜片113即具有正光焦度。本申请的其它一些实施方式中，第一镜片组11包括四片镜片，除第一镜片111及第二镜片112外的其它镜片即为第三镜片113及第四镜片，因此，第三镜片113与第四镜片的组合光焦度为正光焦度。本申请实施方式中，第一镜片111具有正光焦度，第二镜片112具有负光焦度，第一镜片组11除第一镜片111及第二镜片112外的其它镜片的组合光焦为正光焦度，即第一镜片组11的各镜片的光焦度正负搭配，从而能够实现更好的校正相差的效果。并且，第一镜片111具有正光焦度，具有聚光作用，能够更多的将外界的光线汇聚至光学镜头10内，增加光学镜头10的入光量，以实现更好的拍照效果。
本申请一些实施方式中，光学镜头10的满足关系式：F#≥2。其中，F#为光学镜头10的光圈F值。本申请实施方式中，光学镜头10的光圈F值能够满足上述关系式，光学镜头10能够有合适大小的镜头口径，从而保证光学镜头10能够有合适的入光量，从而光学镜头10能够具有较好的光学成像效果。本申请一些实施方式中，光学镜头的镜头口径可以小于20mm。由于光学镜头10的光圈F值为光学镜头10的焦距与镜头口径的直径的比值，当光学镜头10的光圈F值满足上述关系式时，光学镜头10的镜头口径能够满足光学镜头10的入光量需求的同时，光学镜头10的焦距均能够满足光学镜头10对于不同的应用场景(包括远距拍摄及微距拍的)的需求。
一些实施方式中，第二镜片组12的镜片包括自物侧至像侧依次设置的第一片镜片121，第一片镜片121为弯月镜片，即第一片镜片121的物侧面及像侧面的曲率均为正或者均为负。换句话说，所述第一片镜片121的物侧面为凸面、像侧面为凹面，或者所述第一片镜片121的物侧面为凹面、像侧面为凸面。本申请一些实施方式中，第一片镜片121的像侧面为凹面，能够使经第一镜片组11后传输至第二镜片组12内的光线扩散至更广的范围，起到一定的消除场曲的作用，从而使得光学镜头10能够具有更好的拍摄效果。可以理解的是，本申请的一些实施方式中，第一片镜片121的像侧面也可以为凸面。
一些实施方式中，光学镜头10满足关系式：0.4<|f1/f2|<1.1。其中，f1为第一镜片组11的焦距，f2为第二镜片组12的焦距。
本申请的第一镜片组11及第二镜片组12满足上述关系式，即光学镜头10的第一镜片组 11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。
本申请一些实施方式中，第一镜片组11的焦距与第二镜片组12的焦距的比值的绝对值|f1/f2|小于1，即第一镜片组11的焦距小于第二镜片组12的焦距，第一镜片组11的屈光能力较第二镜片组12更强，第一镜片组11的光线调整能力比第二镜片组12更强，第二镜片组12对光线调整作用较小，从而减小第二镜片组12在不同位置之间移动时对光学镜头10的光线调节效果的差别，保证在移动第二镜片组12以调整光学镜头10的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头10的成像效果始终能够较好。
一些实施方式中，光学镜头10满足关系式：0.4<|f2/f|<1。其中，f2为第二镜片组12的焦距，f为光学镜头10处于远距拍摄状态时的焦距。本申请实施方式中，光学镜头10处于远距拍摄状态时，第一镜片组11与第二镜片组12之间的距离最为接近。本申请的光学镜头10满足上述关系式，即光学镜头10的第二镜片组12的焦距能够得到合理的分配，从而根据光学镜头10的实际使用需求移动第二镜头组时，光学镜头10的焦距能够得到适应性的调整以满足不同场景的拍摄需求。
一些实施方式中，光学镜头10的第一镜片组11满足关系式：0.2<|f11/f12|<1.1。其中，f11为第一镜片组11的第一镜片111的焦距，f12为第一镜片组11的第二镜片112的焦距。本申请的第一镜片组11的第一镜片111及第二镜片112的满足上述关系式，即第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。本申请一些实施方式中，第一镜片组的第一镜片的焦距与第二镜片的焦距的比值的绝对值|f11/f12|小于1，即本申请实施方式中，第一镜片111的光焦度的绝对值小于第二镜片112的焦距的绝对值，即第一镜片111能够具有较好的能力，能够具有较好的光线汇聚效果，以更多的将外界的光线汇聚至光学镜头10内，提高光学镜头10的入光量，以使光学镜头10具有更好的成像效果。
一些实施方式中，光学镜头10的第二镜片组12满足关系式：|f21/f2L|<10。其中，f21为第二镜片组12的第一片镜片121的焦距，f2L为第二镜片组12中最靠近像侧的镜片的焦距。本申请一些实施方式中，第二镜片组12包括两片镜片，两片镜片为依次从物侧至像侧排布的第一片镜片121及第二片镜片122，因此，第二镜片组12中最靠近像侧的镜片即为第二片镜片122。在其他一些实施方式中，第二镜片组12可包括三片镜片，三片镜片为依次从物侧至像侧排布的第一片镜片121、第二片镜片122及第三片镜片123(图中未示出)，因此，第二镜片组12中最靠近像侧的镜片即为第三片镜片123。
本申请的光学镜头10满足上述关系式，即第二镜片组12的第一片镜片121及最靠近像侧的镜片的焦距能够得到合理的分配，从而使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。
本申请的一些实施方式中，第二镜片组12的第一片镜片121及最靠近像侧的镜片的焦距比值的绝对值|f21/f2L|小于1，即第二镜片组12的第一片镜片121的焦距绝对值小于最靠近像侧的镜片的焦距绝对值，因此，第二镜片组12的第一片镜片121屈光的程度较高，因此，从第一镜片组11入射传输至第二镜片组12的光线经第一片镜片121后能够得到尽快的调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头10均能够有良好的成像效果。
一些实施方式中，光学镜头10的第二镜片组12满足关系式：1.4<|1-β^2|<3.8。其中，β 为光线在第二镜片组12上的入射角度与出射角度的比值，1-β^2为第二镜片组12的焦距敏感度。本申请实施方式中，焦距敏感度决定了光线的调控能力的大小，影响镜片组的焦距。本实施方式中，第二镜片组12的焦距敏感度满足上述关系式时，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
本申请实施方式中，第一镜片组11中至少一片镜片采用玻璃镜片，其它的镜片为玻璃镜片或者塑料镜片。由于玻璃镜片的相对折射率温度系数较低，即玻璃镜片的折射率随着温度变化的程度较小，因此，本申请的光学镜头10相较于全部采用塑料镜片的光学镜头10来说，温漂系数会大大减小。并且，一般来说，玻璃镜片的折射率随温度变化关系满足：dn/dT>0，其中，dn是指折射率的变化值，dT是指温度变化值的比值；塑料镜片的折射率随温度变化关系满足：dn/dT＜0，当温度发生变化时，玻璃镜片与塑料镜片之间会产生补偿，从而减小光学镜头10的温漂。本实施方式中，第一镜片组11中最靠近物侧的镜片(即第一镜片111)为玻璃镜片，由于第一镜片组11中最靠近物侧的镜片一般离外界的距离最近，从而受到温度的影响最大，因此，将其设置为玻璃镜片，能够最大程度的减小光学镜头10的温漂。
一些实施方式中，第一镜片组11的多片镜片中至少包括4个非球面镜片，第二镜片组12的镜片均为非球面镜片，从而保证光学镜头10的各个镜片有更高的表面自由度，可以将镜片的表面根据需求进行任意设计，进而能够减小光学镜头10的像差、场曲等问题，从而使得光学镜头10有更好的成像效果。本申请一些实施方式中，第一镜片组11中最靠近物侧的镜片(即第一镜片111)为球面镜片，其它镜片均为非球面镜片。本申请一些实施方式中，由于第一镜片111的材质为玻璃材质，玻璃材质的镜片加工难度较高，因此，第一镜片111采用球面镜片时，相较于非球面镜片来说，镜片的加工能够更加的简单。可以理解的是，本申请的其它一些实施方式中，第一镜片组11除第一片镜片121外的其它镜片也可以为玻璃镜片，以进一步的减小光学镜头10的温漂。并且，第一镜片组11包括的玻璃镜片的表面也可以为非球面，以增加镜片的表面自由度，从而可以将镜片的表面根据需求进行任意设计，进而减小光学镜头10的像差、场曲等问题，从而使得光学镜头10有更好的成像效果。本申请一些实施方式中，镜片的物侧面及像侧面也可以一面为球面，另一面为非球面。
请参阅图5，图5所示为图1所示实施方式的电子设备1000沿I-I截开后的部分截面示意图。本实施方式中，摄像头模组100安装于电子设备1000中时，光学镜头10的轴向方向与电子设备1000的厚度方向(即图中Z轴方向)相同，且光学镜头10与电子设备1000上的入光孔1002相对，电子设备1000外的光线经入光孔1002入射至光学镜头10，再经光学镜头10后出射至感光元件20上成像。本实施方式中，光学镜头10的轴向方向与第一镜片组11及第二镜片组12的轴向方向相同。光学镜头10的光学总长会影响电子设备1000的厚度。本申请中，由于光学镜头10的光学总长可以较小，从而电子设备1000的厚度可以较薄，实现电子设备1000的薄型化。
请参阅图6，图6所示为本申请的另一种实施方式的电子设备1000沿图1中I-I截开后的部分截面示意图。本实施方式中，光学镜头10可以为潜望式的镜头，即第一镜片组11及第二镜片组12的轴向方向可以与电子设备1000的厚度方向(图中Z轴方向)垂直，从而避免第一镜片组11及第二镜片组12的轴上距离对电子设备1000的厚度的影响。本实施方式中，第一镜片组11及第二镜片组12的轴向方向为图中X方向。光学镜头10还包括光路偏折元件40，光路偏折元件40能够改变光线的传输方向。本实施方式中，光路偏折元件40设于第一镜片组11件远离第二镜片组12件的一侧，并与电子设备1000上的入光孔1002相对。光 学镜头10包括电子设备1000外的光线沿电子设备1000的厚度方向经入光孔1002可以入射至光学镜头10内，再经光学镜头10的光路偏折元件40折叠后依次经第一镜片组11件及第二镜片组12件后，再出射至感光元件20上成像。本实施方式中，光路偏折元件40可以为棱镜、反光镜等。可以理解的是，本申请的一些实施方式中，光路偏折元件40与电子设备1000上的入光孔1002之间也可以设置镜片，以进一步的提高光学镜头10的成像效果。
本申请中，通过在不同的使用场景下(包括远距拍摄场景及微距拍摄场景)，相应的移动第二镜片组12，以改变第一镜片组11与第二镜片组12之间的距离，从而改变光学镜头10的焦距，从而保证在不同的使用场景下，通过本申请的光学镜头10均能够实现良好的拍摄效果。并且，本申请中，将第二镜片组12设置于第一镜片组11的后焦长度范围内，相较于调整光学镜头10的各片镜片之间的距离以实现光学镜头10改变的方案来说，本申请的光学镜头10的光学总长能够较短，以使得光学镜头10能够适用于薄型化的电子设备1000内。并且，本申请中，通过对第一镜片组11及第二镜片组12的光焦度的合理分配、第一镜片组11及第二镜片组12内各镜片的光焦度的合理分配，并控制镜片的数量，使光学镜头10的光圈、焦距、厚度、折射率和光学总长等方面共同配合，从而能够保证光学镜头10在不同的应用场景下均能够具有较好的成像效果，同时满足光学系统结构紧凑的需求，使得光学镜头10的体积较小，能够更好的应用于小型的电子设备1000中。
下面将结合图7a至图33更加详细地描述本申请实施方式的一些具体的而非限制性的例子。
请参阅图7a及图7b，图7a所示为本申请第一实施方式的光学镜头10用于远距拍摄时的结构示意图，图7b所示为本申请第一实施方式的光学镜头10用于微距拍摄时的结构示意图。本实施方式中，光学镜头10包括的自物侧至像侧依次设置的第一镜片组11及第二镜片组12。第一镜片组11的镜片为三片，分别为第一镜片111、第二镜片112、第三镜片113，第一镜片111、第二镜片112、第三镜片113自物侧至像侧依次设置。第二镜片组12的镜片为两片，分别为第一片镜片121及第二片镜片122，第一片镜片121及第二片镜片122自物侧至像侧依次设置。本实施方式中，第一镜片111、第二镜片112、第三镜片113、第一片镜片121及第二片镜片122同轴设置。本实施方式中，第一镜片组11的轴向方向为第一镜片111、第二镜片112、第三镜片113的光轴方向，第二镜片组12的轴向方向为第一片镜片121、第二片镜片122的镜片，第一镜片组11与第二镜片组12同轴。
其中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。第一镜片组11的第一镜片111具有正光焦度，第二镜片112具有负光焦度，第三镜片113具有正光焦度。第二镜片组12的第一片镜片121具有正光焦度，第二片镜片122具有负光焦度。第二镜片组12的第一片镜片121为弯月型镜片，且第一片镜片121的像侧面为凹面。
本实施方式中，第一镜片组11的第一镜片111为玻璃材质。第一镜片组11的第一镜片111的物侧面及像侧面均为球面，第二镜片112及第三镜片113的物侧面及像侧面均为高次非球面。第二镜片组12的第一片镜片121及第二片镜片122的物侧面及像侧面均为高次非球面。依据上文中关于本申请光学镜头10满足的各关系式，本申请第一实施方式的光学镜头10的设计参数如下表1。
表1第一实施方式的光学镜头10的设计参数
Figure PCTCN2022087472-appb-000001
Figure PCTCN2022087472-appb-000002
其中，S11表示第一镜片111的物侧面，S12表示第一镜片111的像侧面，S13表示第二镜片112的物侧面，S14表示第二镜片112的像侧面，S15表示第三镜片113的物侧面，S16表示第三镜片113的像侧面；S21表示第一片镜片121的物侧面，S22表示第一片镜片121的像侧面，S23表示第二片镜片122的物侧面，S24表示第二片镜片122的像侧面，S31表示滤光片30的物侧面，S32表示滤光片30的像侧面。需要说明的是，本申请中，S11、S12、S13、S14、S15、S16、S21、S22、S23、S24、S31、S32等符号表示的意义均相同，在后续再次出现时不再进行赘述。
其中，厚度d1表示光学镜头10处于远距拍摄状态时，光学镜头10的各镜片的厚度及镜片之间的距离。具体的，d1/S11表示光学镜头10处于远距拍摄状态时，第一镜片111的厚度；d1/S12表示光学镜头10处于远距拍摄状态时，第一镜片111的像侧面至第二镜片112的物侧面之间的距离；d1/S13表示光学镜头10处于远距拍摄状态时，第二镜片112的厚度；d1/S14表示光学镜头10处于远距拍摄状态时，第二镜片112的像侧面至第三镜片113的物侧面之间的距离；d1/S15表示光学镜头10处于远距拍摄状态时，第三镜片113的厚度；d1/S16表示光学镜头10处于远距拍摄状态时，第三镜片113的像侧面至第一片镜片121的物侧面之间的距离；d1/S21表示光学镜头10处于远距拍摄状态时，第一片镜片121的厚度；d1/S22表示光学镜头10处于远距拍摄状态时，第一片镜片121的像侧面至第二片镜片122的物侧面之间的距离；d1/S23表示光学镜头10处于远距拍摄状态时，第二片镜片122的厚度；d1/S24表示光学镜头10处于远距拍摄状态时，第二片镜片122的像侧面至滤光片30的物侧面之间的距离；d1/S31表示光学镜头10处于远距拍摄状态时，滤光片30的厚度；d1/S32表示光学镜头10处于远距拍摄状态时，滤光片30的像侧面至感光元件20的距离。
厚度d2表示光学镜头10处于微距拍摄状态时，光学镜头10的各镜片的厚度及镜片之间的距离。具体的，d2/S11表示光学镜头10处于微距拍摄状态时，第一镜片111的厚度；d2/S12表示光学镜头10处于微距拍摄状态时，第一镜片111的像侧面至第二镜片112的物侧面之间的距离；d2/S13表示光学镜头10处于微距拍摄状态时，第二镜片112的厚度；d2/S14表示光学镜头10处于微距拍摄状态时，第二镜片112的像侧面至第三镜片113的物侧面之间的距离； d2/S15表示光学镜头10处于微距拍摄状态时，第三镜片113的厚度；d2/S16表示光学镜头10处于微距拍摄状态时，第三镜片113的像侧面至第一片镜片121的物侧面之间的距离；d2/S21表示光学镜头10处于微距拍摄状态时，第一片镜片121的厚度；d2/S22表示光学镜头10处于微距拍摄状态时，第一片镜片121的像侧面至第二片镜片122的物侧面之间的距离；d2/S23表示光学镜头10处于微距拍摄状态时，第二片镜片122的厚度；d2/S24表示光学镜头10处于微距拍摄状态时，第二片镜片122的像侧面至滤光片30的物侧面之间的距离；d2/S31表示光学镜头10处于微距拍摄状态时，滤光片30的厚度；d2/S32表示光学镜头10处于微距拍摄状态时，滤光片30的像侧面至感光元件20的距离。
需要说明的是，本申请中，d1、d2、d1/S11、d1/S12、d1/S13、d1/S14、d1/S15、d1/S16、d1/S21、d1/S22、d1/S23、d1/S24、d1/S31、d1/S32、d2/S11、d2/S12、d2/S13、d2/S14、d2/S15、d2/S16、d2/S21、d2/S22、d2/S23、d2/S24、d2/S31、d2/S32等符号表示的意义均相同，在后续再次出现时不再进行赘述。
表2示出了本实施方式的光学镜头10的各非球面镜片的设计参数。需要说明的是，本申请中所说的非球面镜片是指像侧面及物侧面均为非球面的镜片。本实施方式中，第一镜片组11的第二镜片112、第三镜片113，及第二镜片组12的第一片镜片121及第二片镜片122均为非球面镜片。
表2第一实施方式的光学镜头10的各镜片的设计参数
Figure PCTCN2022087472-appb-000003
其中，K为二次曲面常数，A 2、A 4、A 6、A 8、A 10、A 12等符号表示多项式系数。需要说明的是，表格中的各参数为科学计数法表示。例如，3.7308E-03是指3.7308×10 -03；-1.4773E-06是指-1.4773×10 -6。本申请中，K、A 2、A 4、A 6、A 8、A 10、A 12等符号表示的意义均相同，在 后续再次出现时不再进行赘述。
本实施方式中，所有非球面面型可利用但不限于以下非球面公式进行限定：
Figure PCTCN2022087472-appb-000004
其中，z为非球面的矢高(即非球面上距离光轴为r的点与相切于非球面光轴上交点切面的相对距离)，r为非球面的径向坐标(即非球面曲线上的点与光轴的垂直距离)，c为非球面顶点球曲率，K为二次曲面常数，α i为第i阶非球面系数，ρ为归一化轴向坐标。
Figure PCTCN2022087472-appb-000005
本实施方式中，通过将表2中的各参数代入上述非球面公式即能够设计得到本实施方式的光学镜头10中的第二镜片112、第三镜片113、第一片镜片121及第二片镜片122。
根据上述各镜片的设计参数得到本实施方式的光学镜头10。本实施方式的光学镜头10的基本参数如表3所示。
表3第一实施方式的光学镜头10基本参数
参数 取值 参数 取值
f1(mm) 7.78 f22(mm) 30.1
f2(mm) -10.47 f(mm) 16.57
f11(mm) 9.2 F#(mm) 3.0
f12(mm) -20.67 IH(mm) 4.5
f13(mm) 11.86 β 2.13
f21(mm) -6.82 |1-β^2| 3.54
TTL(mm) 16.828    
其中，f1为第一镜片组11的焦距。
f2为第二镜片组12的焦距。
f11为第一镜片组11的第一镜片111的焦距。
f12为第一镜片组11的第二镜片112的焦距。
f13为第一镜片组11的第三镜片113的焦距。
f21为第二镜片组12的第一片镜片121的焦距。
f22为第二镜片组12的第二片镜片122的焦距。
f为光学系统的焦距。
F#为光学系统光圈F值。
β为第二镜片组12入射角与出射角的比值，|1-β^2|为焦距敏感度。
TTL为光学总长，即第一镜片组11的第一镜片111的物侧面至像面的轴上距离。
需要说明的是，本申请中，TTL、ImgH、f、f1、f2、f11、f12、f13、f21、f22、β、|1-β^2|、F#等符号表示的意义均相同，在后续再次出现时不再进行赘述。
本实施方式中，光学镜头10的光学总长为16.828mm。本实施方式中，所述第一镜片组11中最靠近所述第二镜片组12的镜片的像侧面与所述第二镜片组12中最靠近所述第一镜片组11的镜片的物侧面之间的距离d，即为第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离。本实施方式中，光学镜头10处于远距拍摄状态时，第三镜片113的像 侧面S16与第一片镜片121的物侧面S21之间的距离为0.999mm；光学镜头10处于微距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为2.32mm。
本实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd为1.32mm，通过短距离的移动即能够实现光学镜头10的不同场景的应用需求，对驱动第二镜片组12移动的驱动结构的要求较小。第二镜片组12可相对所述第一镜片组11移动的距离Δd光学镜头10的光学总长TTL的比值为0.138。本实施方式中，光学镜头10的第一镜片组11与第二镜片组12的焦距比值|f1/f2|为0.74,光学镜头10的第一镜片组11与光学镜头10的焦距比值|f1/f|为0.47，光学镜头10的第二镜片组12与光学镜头10的焦距比值|f2/f|为0.63，光学镜头10的第一镜片组11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。且第二镜片组12能够配合第一镜片组11以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。并且，本实施方式中，第一镜片组11的焦距与第二镜片组12的焦距的比值的绝对值|f1/f2|小于1，即第一镜片组11的屈光能力较第二镜片组12更强，第一镜片组11具有更强的光线调整能力，第二镜片组12对光线调整作用较小，从而减小第二镜片组12在不同位置之间移动时对光学镜头10的光线调节效果的差别，保证在移动第二镜片组12以调整光学镜头10的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头10的成像效果始终能够较好。
本实施方式中，第一镜片组11中第一镜片111的焦距与第二镜片112的焦距比值为|f11/f12|为0.45，第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，使得光学镜头10能够具有良好的成像效果。并且，本实施方式中，第一镜片111的光焦度小于第二镜片112的焦距，即第一镜片111能够具有较好的光线汇聚效果，以更多的将外界的光线汇聚至光学镜头10内，提高光学镜头10的入光量，以使光学镜头10具有更好的成像效果。
本实施方式中，第二镜片组12的第一片镜片121的焦距与最靠近像侧的镜片(即第二片镜片122)的比值为|f21/f2L|为0.23，第二镜片组12的第一片镜片121及最靠近像侧的镜片(即第二片镜片122)的焦距能够得到合理的分配，使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。并且，本实施方式中，第二镜片组12的第一片镜片121的焦距的绝对值小于最靠近像侧的镜片(即第二片镜片122)的焦距的绝对值，即第二镜片组12的第一片镜片121屈光的程度较高，因此，第二镜片组12在沿轴向移动的过程中，从第一镜片组11入射传输至第二镜片组12的光线经第一片镜片121后的光线能够第一时间得到调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头10均能够有良好的成像效果。
第二镜片组12的焦距敏感度|1-β^2|为3.54，其中，光线在第二镜片组12上入射角度与出射角度的比值β为2.13。本实施方式中，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
请参阅图8、图9及图10，图8所示为波长分别为656nm、587nm、486nm的光经过第一实施方式的光学镜头10后的垂轴球差曲线图。图8的纵坐标表示的是实际像高，单位为毫米；横坐标表示垂轴方向上的色差，单位为毫米。图9所示为波长为555nm的光经第一实施方式的光学镜头10后的像散场曲图，图9的纵坐标表示视场角度，单位为度(°)，横坐标 单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。图10所示为波长为555nm的光经过第一实施方式的光学镜头10的畸变图。图10的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第一实施方式的光学镜头10的畸变值，单位为％。从图8中可以看出，本实施方式中，不同波长的光线经本实施方式的光学镜头10后的垂轴球差也控制在一个较小的范围内。从图9中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小。从图10中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小。因此，本实施方式中，光线经本实施方式的光学镜头10后垂轴球差、像散场曲及畸变等均较小，也即本实施方式的光学镜头10能够实现具有较好的成像效果。其中，球差是由于光学透镜空间变化带来的实际光线与近轴或旁轴光线的差异。
请参阅图11a及图11b，图11a所示为本申请第二实施方式的光学镜头10用于远距拍摄时的结构示意图，图11b所示为本申请第二实施方式的光学镜头10用于微距拍摄时的结构示意图。本实施方式中，光学镜头10包括的自物侧至像侧依次设置的第一镜片组11及第二镜片组12。第一镜片组11的镜片为三片，分别为第一镜片111、第二镜片112、第三镜片113，第一镜片111、第二镜片112、第三镜片113自物侧至像侧依次设置。第二镜片组12的镜片为两片，分别为第一片镜片121及第二片镜片122，第一片镜片121及第二片镜片122自物侧至像侧依次设置。本实施方式中，第一镜片111、第二镜片112、第三镜片113、第一片镜片121及第二片镜片122同轴设置。本实施方式中，第一镜片组11的轴向方向为第一镜片111、第二镜片112、第三镜片113的光轴方向，第二镜片组12的轴向方向为第一片镜片121、第二片镜片122的镜片，第一镜片组11与第二镜片组12同轴。
其中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。第一镜片组11的第一镜片111具有正光焦度，第二镜片112具有负光焦度，第三镜片113具有正光焦度。第二镜片组12的第一片镜片121及第二片镜片122具有负光焦度。第二镜片组12的第一片镜片121为弯月型镜片，且第一片镜片121的像侧面为凹面。
本实施方式中，第一镜片组11的第一镜片111为玻璃材质。第一镜片组11的第一镜片111的物侧面及像侧面均为球面，第二镜片112及第三镜片113的物侧面及像侧面均为高次非球面。第二镜片组12的第一片镜片121及第二片镜片122的物侧面及像侧面均为高次非球面。依据上文中关于本申请光学镜头10满足的各关系式，本申请第二实施方式的光学镜头10的设计参数如下表4。
表4第二实施方式的光学镜头10的设计参数
Figure PCTCN2022087472-appb-000006
Figure PCTCN2022087472-appb-000007
表5示出了本实施方式的光学镜头10的各非球面镜片的设计参数。本实施方式中，第一镜片组11的第二镜片112、第三镜片113，及第二镜片组12的第一片镜片121、第二片镜片122均为非球面镜片。
表5第二实施方式的光学镜头10的各非球面镜片的设计参数
Figure PCTCN2022087472-appb-000008
本实施方式中，所有非球面面型可利用但不限于以下非球面公式进行限定：
Figure PCTCN2022087472-appb-000009
其中，z为非球面的矢高(即非球面上距离光轴为r的点与相切于非球面光轴上交点切面的相对距离)，r为非球面的径向坐标(即非球面曲线上的点与光轴的垂直距离)，c为非球面顶点球曲率，K为二次曲面常数，α i为第i阶非球面系数，ρ为归一化轴向坐标。
Figure PCTCN2022087472-appb-000010
本实施方式中，通过将表2中的各参数代入上述非球面公式即能够设计得到本实施方式的光学镜头10中的第二镜片112、第三镜片113、第一片镜片121及第二片镜片122。
根据上述各镜片的设计参数得到本实施方式的光学镜头10。本实施方式的光学镜头10的基本参数如表6所示。
表6第二实施方式的光学镜头10基本参数
参数 取值 参数 取值
f1(mm) 10.28 f22(mm) 29.8
f2(mm) -14.22 f(mm) 16.53
f11(mm) 9.50 F#(mm) 3.00
f12(mm) -25.79 IH(mm) 4.2
f13(mm) 24.88 β 1.61
f21(mm) -9.97 |1-β^2| 1.58
TTL(mm) 17.248    
本实施方式中，光学镜头10的光学总长为17.248mm。本实施方式中，所述第一镜片组11中最靠近所述第二镜片组12的镜片的像侧面与所述第二镜片组12中最靠近所述第一镜片组11的镜片的物侧面之间的距离d，即为第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离。本实施方式中，光学镜头10处于远距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为1.084mm；光学镜头10处于微距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为3.58mm。
本实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd为2.49mm，通过短距离的移动即能够实现光学镜头10的不同场景的应用需求，对驱动第二镜片组12移动的驱动结构的要求较小。第二镜片组12可相对所述第一镜片组11移动的距离Δd光学镜头10的光学总长TTL的比值为0.144。
本实施方式中，光学镜头10的第一镜片组11与第二镜片组12的焦距比值|f1/f2|为0.72,光学镜头10的第一镜片组11与光学镜头10的焦距比值|f1/f|为0.62，光学镜头10的第二镜片组12与光学镜头10的焦距比值|f2/f|为0.86，光学镜头10的第一镜片组11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。且第二镜片组12能够配合第一镜片组11以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。并且，本实施方式中，第一镜片组11的焦距与第二镜片组12的焦距的比值的绝对值|f1/f2|小于1，即第一镜片组11的焦距小于第二镜片组12的焦距，第一镜片组11的屈光能力较第二镜片组12更强，第一镜片组11具有更强的光线调整能力，第二镜片组12对光线调整作用较小，从而减小第二镜片组12在不同位置之间移动时对光学镜头10的光线调节效果的差别，保证在移动第二镜片组12以调整光学镜头10的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头10的成像效果始终能够较好。
本实施方式中，第一镜片组11中第一镜片111的焦距与第二镜片112的焦距比值为|f11/f12|为0.37，第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，使得光学镜头10能够具有良好的成像效果。并且，本实施方式中，第一镜片111的光焦度小于第二镜片112的焦距，即第一镜片111能够具有较好的光线汇聚效果，以更多的将外界的 光线汇聚至光学镜头10内，提高光学镜头10的入光量，以使光学镜头10具有更好的成像效果。
本实施方式中，第二镜片组12的第一片镜片121的焦距与最靠近像侧的镜片(即第二片镜片122)的比值为|f21/f2L|为0.33，第二镜片组12的第一片镜片121及最靠近像侧的镜片(即第二片镜片122)的焦距能够得到合理的分配，使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。并且，本实施方式中，第二镜片组12的第一片镜片121的焦距的绝对值小于最靠近像侧的镜片(即第二片镜片122)的焦距的绝对值，即第二镜片组12的第一片镜片121屈光程度较高，因此，第二镜片组12在沿轴向移动的过程中，从第一镜片组11入射传输至第二镜片组12的光线经第一片镜片121后的光线能够第一时间得到调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头10均能够有良好的成像效果。
第二镜片组12的焦距敏感度|1-β^2|为3.54，其中，光线在第二镜片组12上入射角度与出射角度的比值β为2.13。本实施方式中，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
请参阅图12、图13及图14，图12所示为波长分别为656nm、587nm、486nm的光经过第二实施方式的光学镜头10后的垂轴球差曲线图。图12的纵坐标表示的是实际像高，单位为毫米；横坐标表示垂轴方向上的色差，单位为毫米。图13所示为波波长为555nm的光经第二实施方式的光学镜头10后的像散场曲图。图13的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。图14所示为波长为555nm的光经过第二实施方式的光学镜头10的畸变图。图14的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第二实施方式的光学镜头10的畸变值，单位为％。从图12中可以看出，本实施方式中，不同波长的光线经本实施方式的光学镜头10后的垂轴球差也控制在一个较小的范围内。从图13中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小。从图14中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小。因此，本实施方式中，光线经本实施方式的光学镜头10后垂轴球差、像散场曲及畸变等均较小，也即本实施方式的光学镜头10能够实现具有较好的成像效果。
请参阅图15a及图15b，图15a所示为本申请第三实施方式的光学镜头10用于远距拍摄时的结构示意图，图15b所示为本申请第三实施方式的光学镜头10用于微距拍摄时的结构示意图。本实施方式中，光学镜头10包括的自物侧至像侧依次设置的第一镜片组11及第二镜片组12。第一镜片组11的镜片为三片，分别为第一镜片111、第二镜片112、第三镜片113，第一镜片111、第二镜片112、第三镜片113自物侧至像侧依次设置。第二镜片组12的镜片为两片，分别为第一片镜片121及第二片镜片122，第一片镜片121及第二片镜片122自物侧至像侧依次设置。本实施方式中，第一镜片111、第二镜片112、第三镜片113、第一片镜片121及第二片镜片122同轴设置。本实施方式中，第一镜片组11的轴向方向为第一镜片111、第二镜片112、第三镜片113的光轴方向，第二镜片组12的轴向方向为第一片镜片121、 第二片镜片122的镜片，第一镜片组11与第二镜片组12同轴。
其中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。第一镜片组11的第一镜片111具有正光焦度，第二镜片112具有负光焦度，第三镜片113具有正光焦度。第二镜片组12的第一片镜片121具有正光焦度，第二片镜片122具有负光焦度。第二镜片组12的第一片镜片121为弯月型镜片，且第一片镜片121的像侧面为凸面。
本实施方式中，第一镜片组11的第一镜片111为玻璃材质。第一镜片组11的第一镜片111的物侧面及像侧面均为球面，第二镜片112及第三镜片113的物侧面及像侧面均为高次非球面。第二镜片组12的第一片镜片121及第二片镜片122的物侧面及像侧面均为高次非球面。依据上文中关于本申请光学镜头10满足的各关系式，本申请第三实施方式的光学镜头10的设计参数如下表7。
表7第三实施方式的光学镜头10的设计参数
Figure PCTCN2022087472-appb-000011
表8示出了本实施方式的光学镜头10的各非球面镜片的设计参数。本实施方式中，第一镜片组11的第二镜片112、第三镜片113，及第二镜片组12的第一片镜片121、第二片镜片122均为非球面镜片。
表8第三实施方式的光学镜头10的各非球面镜片的设计参数
Figure PCTCN2022087472-appb-000012
Figure PCTCN2022087472-appb-000013
通过将上述参数代入至公式：
Figure PCTCN2022087472-appb-000014
，即能够设计得到第一镜片组11的第二镜片112、第三镜片113，及第二镜片组12的第一片镜片121、第二片镜片122。本实施方式中，
Figure PCTCN2022087472-appb-000015
根据上述各镜片的设计参数得到本实施方式的光学镜头10。本实施方式的光学镜头10的基本参数如表9所示。
表9第三实施方式的光学镜头10基本参数
参数 取值 参数 取值
f1(mm) 7.94 f22(mm) -7.77
f2(mm) -7.76 f(mm) 16.55
f11(mm) 10.3 F#(mm) 3.1
f12(mm) -26.48 IH(mm) 4
f13(mm) 10.13 β 2.08
f21(mm) -71.14 |1-β^2| 3.34
TTL(mm) 17.23    
本实施方式中，光学镜头10的光学总长为17.23mm。本实施方式中，所述第一镜片组11中最靠近所述第二镜片组12的镜片的像侧面与所述第二镜片组12中最靠近所述第一镜片组11的镜片的物侧面之间的距离d，即为第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离。本实施方式中，光学镜头10处于远距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为0.95mm；光学镜头10处于微距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为2.03mm。
本实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd为1.08mm，通过短距离的移动即能够实现光学镜头10的不同场景的应用需求，对驱动第二镜片组12移 动的驱动结构的要求较小。第二镜片组12可相对所述第一镜片组11移动的距离Δd与光学镜头10的光学总长TTL的比值为0.144。
本实施方式中，光学镜头10的第一镜片组11与第二镜片组12的焦距比值|f1/f2|为1.02,光学镜头10的第一镜片组11与光学镜头10的焦距比值|f1/f|为0.48，光学镜头10的第二镜片组12与光学镜头10的焦距比值|f2/f|为0.47，光学镜头10的第一镜片组11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。且第二镜片组12能够配合第一镜片组11以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。
本实施方式中，第一镜片组11中第一镜片111的焦距与第二镜片112的焦距比值为|f11/f12|为0.39，第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，使得光学镜头10能够具有良好的成像效果。并且，本实施方式中，第一镜片111的光焦度小于第二镜片112的焦距，即第一镜片111能够具有较好的光线汇聚效果，以更多的将外界的光线汇聚至光学镜头10内，提高光学镜头10的入光量，以使光学镜头10具有更好的成像效果。
本实施方式中，第二镜片组12的第一片镜片121的焦距与最靠近像侧的镜片(即第二片镜片122)的比值为|f21/f2L|为9.16，第二镜片组12的第一片镜片121及最靠近像侧的镜片的焦距能够得到合理的分配，使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。
第二镜片组12的焦距敏感度|1-β^2|为3.34，其中，光线在第二镜片组12上入射角度与出射角度的比值β为2.08。本实施方式中，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
请参阅图16、图17及图18，图16所示为波长分别为656nm、587nm、486nm的光经过第三实施方式的光学镜头10后的垂轴球差曲线图。图16的纵坐标表示的是实际像高，单位为毫米；横坐标表示垂轴方向上的色差，单位为毫米。图17所示为波长为555nm的光经第三实施方式的光学镜头10后的像散场曲图。图17的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。图18所示为波长为555nm的光经过第三实施方式的光学镜头10的畸变图。图18的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第三实施方式的光学镜头10的畸变值，单位为％。从图16中可以看出，本实施方式中，不同波长的光线经本实施方式的光学镜头10后的垂轴球差也控制在一个较小的范围内。从图17中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小。从图18中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小。因此，本实施方式中，光线经本实施方式的光学镜头10后垂轴球差、像散场曲及畸变等均较小，也即本实施方式的光学镜头10能够实现具有较好的成像效果。
请参阅图19a及图19b，图19a所示为本申请第四实施方式的光学镜头10用于远距拍摄时的结构示意图，图19b所示为本申请第四实施方式的光学镜头10用于微距拍摄时的结构示意图。本实施方式中，光学镜头10包括的自物侧至像侧依次设置的第一镜片组11及第二镜 片组12。第一镜片组11的镜片为三片，分别为第一镜片111、第二镜片112、第三镜片113，第一镜片111、第二镜片112、第三镜片113自物侧至像侧依次设置。第二镜片组12的镜片为两片，分别为第一片镜片121及第二片镜片122，第一片镜片121及第二片镜片122自物侧至像侧依次设置。本实施方式中，第一镜片111、第二镜片112、第三镜片113、第一片镜片121及第二片镜片122同轴设置。本实施方式中，第一镜片组11的轴向方向为第一镜片111、第二镜片112、第三镜片113的光轴方向，第二镜片组12的轴向方向为第一片镜片121、第二片镜片122的镜片，第一镜片组11与第二镜片组12同轴。
其中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。第一镜片组11的第一镜片111具有正光焦度，第二镜片112具有负光焦度，第三镜片113具有正光焦度。第二镜片组12的第一片镜片121及第二片镜片122均具有负光焦度。第二镜片组12的第一片镜片121为弯月型镜片，且第一片镜片121的像侧面为凹面。
本实施方式中，第一镜片组11的第一镜片111为玻璃材质。第一镜片组11的第一镜片111的物侧面及像侧面均为球面，第二镜片112及第三镜片113的物侧面及像侧面均为高次非球面。第二镜片组12的第一片镜片121及第二片镜片122的物侧面及像侧面均为高次非球面。依据上文中关于本申请光学镜头10满足的各关系式，本申请第四实施方式的光学镜头10的设计参数如下表10。
表10第四实施方式的光学镜头10的设计参数
Figure PCTCN2022087472-appb-000016
表11示出了本实施方式的光学镜头10的各非球面镜片的设计参数。本实施方式中，第一镜片组11的第二镜片112、第三镜片113，及第二镜片组12的第一片镜片121、第二片镜片122均为非球面镜片。
表11第四实施方式的光学镜头10的各非球面镜片的设计参数
Figure PCTCN2022087472-appb-000017
Figure PCTCN2022087472-appb-000018
Figure PCTCN2022087472-appb-000019
通过将上述参数代入至公式：
Figure PCTCN2022087472-appb-000020
，即能够设计得到第一镜片组11的第二镜片112、第三镜片113，及第二镜片组12的第一片镜片121、第二片镜片122。本实施方式中，
Figure PCTCN2022087472-appb-000021
根据上述各镜片的设计参数得到本实施方式的光学镜头10。本实施方式的光学镜头10的基本参数如表12所示。
表12第四实施方式的光学镜头10基本参数
参数 取值 参数 取值
f1(mm) 8.68 f22(mm) -17.72
f2(mm) -8.78 f(mm) 16.50
f11(mm) 14.4 F#(mm) 3
f12(mm) -14.45 IH(mm) 4
f13(mm) 7.67 β 1.90
f21(mm) -17.29 |1-β^2| 2.61
TTL(mm) 17.23    
本实施方式中，光学镜头10的光学总长为17.23mm。本实施方式中，所述第一镜片组11中最靠近所述第二镜片组12的镜片的像侧面与所述第二镜片组12中最靠近所述第一镜片组11的镜片的物侧面之间的距离d，即为第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离。本实施方式中，光学镜头10处于远距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为0.88mm；光学镜头10处于微距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为3.361mm。
本实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd为2.48mm，通过短距离的移动即能够实现光学镜头10的不同场景的应用需求，对驱动第二镜片组12移动的驱动结构的要求较小。第二镜片组12可相对所述第一镜片组11移动的距离Δd与光学镜头10的光学总长TTL的比值为0.144。
本实施方式中，光学镜头10的第一镜片组11与第二镜片组12的焦距比值|f1/f2|为0.99,光学镜头10的第一镜片组11与光学镜头10的焦距比值|f1/f|为0.53，光学镜头10的第二镜片组12与光学镜头10的焦距比值|f2/f|为0.53，光学镜头10的第一镜片组11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。且第二镜片组12能够配合第一镜片组11以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。并且，本实施方式中，第一镜片组11的焦距与第二镜片组12的焦距的比值的绝对值|f1/f2|小于1，即第一镜片组11的屈光能力较第二镜片组12更强，第一镜片组11具有更强的光线调整能力，第二镜片组12对光线调整作用较小，从而减小第二镜片组12在不同位置之间移动时对光学镜头10的光线调节效果的差别，保证在移动第二镜片组12以 调整光学镜头10的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头10的成像效果始终能够较好。
本实施方式中，第一镜片组11中第一镜片111的焦距与第二镜片112的焦距比值为|f11/f12|为0.99，第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，使得光学镜头10能够具有良好的成像效果。并且，本实施方式中，第一镜片111的光焦度小于第二镜片112的焦距，即第一镜片111能够具有较好的光线汇聚效果，以更多的将外界的光线汇聚至光学镜头10内，提高光学镜头10的入光量，以使光学镜头10具有更好的成像效果。
本实施方式中，第二镜片组12的第一片镜片121的焦距与最靠近像侧的镜片(即第二片镜片122)的比值为|f21/f2L|为0.98，第二镜片组12的第一片镜片121及最靠近像侧的镜片(即第二片镜片122)的焦距能够得到合理的分配，使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。并且，本实施方式中，第二镜片组12的第一片镜片121的焦距的绝对值小于最靠近像侧的镜片(即第二片镜片122)的焦距的绝对值，即第二镜片组12的第一片镜片121屈光的程度较高较大，因此，第二镜片组12在沿轴向移动的过程中，从第一镜片组11入射传输至第二镜片组12的光线经第一片镜片121后的光线能够第一时间得到调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头10均能够有良好的成像效果。
第二镜片组12的焦距敏感度|1-β^2|为2.61，其中，光线在第二镜片组12上入射角度与出射角度的比值β为1.90。本实施方式中，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
请参阅图20、图21及图22，图20所示为波长分别为656nm、587nm、486nm的光经过第四实施方式的光学镜头10后的垂轴球差曲线图。图20的纵坐标表示的是实际像高，单位为毫米；横坐标表示垂轴方向上的色差，单位为毫米。图21所示为波长为555nm的光经第四实施方式的光学镜头10后的像散场曲图。图21的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。图22所示为波长为555nm的光经过第四实施方式的光学镜头10的畸变图。图22的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第四实施方式的光学镜头10的畸变值，单位为％。从图20中可以看出，本实施方式中，不同波长的光线经本实施方式的光学镜头10后的垂轴球差也控制在一个较小的范围内。从图21中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小。从图22中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小。因此，本实施方式中，光线经本实施方式的光学镜头10后垂轴球差、像散场曲及畸变等均较小，也即本实施方式的光学镜头10能够实现具有较好的成像效果。
请参阅图23a及图23b，图23a所示为本申请第五实施方式的光学镜头10用于远距拍摄时的结构示意图，图23b所示为本申请第五实施方式的光学镜头10用于微距拍摄时的结构示意图。本实施方式中，光学镜头10包括的自物侧至像侧依次设置的第一镜片组11及第二镜 片组12。第一镜片组11的镜片为四片，分别为第一镜片111、第二镜片112、第三镜片113及第四镜片114，第一镜片111、第二镜片112、第三镜片113、第四镜片114自物侧至像侧依次设置。第二镜片组12的镜片为两片，分别为第一片镜片121及第二片镜片122，第一片镜片121及第二片镜片122自物侧至像侧依次设置。本实施方式中，第一镜片111、第二镜片112、第三镜片113、第四镜片114、第一片镜片121及第二片镜片122同轴设置。本实施方式中，第一镜片组11的轴向方向为第一镜片111、第二镜片112、第三镜片113、第四镜片114的光轴方向，第二镜片组12的轴向方向为第一片镜片121、第二片镜片122的镜片，第一镜片组11与第二镜片组12同轴。
其中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。第一镜片组11的第一镜片111具有正光焦度，第二镜片112具有负光焦度，第三镜片113及第四镜片114均具有正光焦度。第二镜片组12的第一片镜片121具有负光焦度，第二片镜片122具有正光焦度。第二镜片组12的第一片镜片121为弯月型镜片，且第一片镜片121的像侧面为凹面。
本实施方式中，第一镜片组11的第一镜片111为玻璃材质。第一镜片组11的第一镜片111的物侧面及像侧面均为球面，第二镜片112及第三镜片113的物侧面及像侧面均为高次非球面。第二镜片组12的第一片镜片121及第二片镜片122的物侧面及像侧面均为高次非球面。依据上文中关于本申请光学镜头10满足的各关系式，本申请第五实施方式的光学镜头10的设计参数如下表13。
表13第五实施方式的光学镜头10的设计参数
Figure PCTCN2022087472-appb-000022
其中，S17表示第四镜片114的物侧面，S18表示第四镜片114的像侧面。需要说明的是，本申请中，S17、S18等符号表示的意义均相同，在后续再次出现时不再进行赘述。
表14示出了本实施方式的光学镜头10的各非球面镜片的设计参数。本实施方式中，第一镜片组11的第二镜片112、第三镜片113、第四镜片114，及第二镜片组12的第一片镜片121、第二片镜片122均为非球面镜片。
表14第五实施方式的光学镜头10的各非球面镜片的设计参数
Figure PCTCN2022087472-appb-000023
通过将上述参数代入至公式：
Figure PCTCN2022087472-appb-000024
，即能够设计得到第一镜片组11的第二镜片112、第三镜片113，及第二镜片组12的第一片镜片121、第二片镜片122。本实施方式中，
Figure PCTCN2022087472-appb-000025
根据上述各镜片的设计参数得到本实施方式的光学镜头10。本实施方式的光学镜头10的基本参数如表15所示。
表15第五实施方式的光学镜头10基本参数
参数 取值 参数 取值
f1(mm) 8.92 f22(mm) 22890.06
f2(mm) -11.12 f(mm) 16.46
f11(mm) 9.0 F#(mm) 3.00
f12(mm) -18.59 IH(mm) 4.5
f13(mm) 16.62 β 1.84
f14(mm) 57.05 |1-β^2| 2.38
f21(mm) -10.98 TTL(mm) 17.17
其中，f14为第一镜片组11的第四镜片114的焦距。需要说明的是，本申请中，f14等符号表示的意义均相同，在后续再次出现时不再进行赘述。
本实施方式中，光学镜头10的光学总长为17.17mm。本实施方式中，所述第一镜片组11中最靠近所述第二镜片组12的镜片的像侧面与所述第二镜片组12中最靠近所述第一镜片组11的镜片的物侧面之间的距离d，即为第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离。本实施方式中，光学镜头10处于远距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为0.7mm；光学镜头10处于微距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为3.2mm。
本实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd为2.5mm，通过短距离的移动即能够实现光学镜头10的不同场景的应用需求，对驱动第二镜片组12移动的驱动结构的要求较小。第二镜片组12可相对所述第一镜片组11移动的距离Δd与光学镜头10的光学总长TTL的比值为0.146。
本实施方式中，光学镜头10的第一镜片组11与第二镜片组12的焦距比值|f1/f2|为0.8,光学镜头10的第一镜片组11与光学镜头10的焦距比值|f1/f|为0.54，光学镜头10的第二镜片组12与光学镜头10的焦距比值|f2/f|为0.68，光学镜头10的第一镜片组11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。且第二镜片组12能够配合第一镜片组11以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。并且，本实施方式中，第一镜片组11的焦距与第二镜片组12的焦距的比值的绝对值|f1/f2|小于1，即第一镜片组11的屈光能力较第二镜片组12更强，第一镜片组11具有更强的光线调整能力，第二镜片组12对光线调整作用较小，从而减小第二镜片组12在不同位置之间移动时对光学镜头10的光线调节效果的差别，保证在移动第二镜片组12以调整光学镜头10的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头10的成像效果始终能够较好。
本实施方式中，第一镜片组11中第一镜片111的焦距与第二镜片112的焦距比值为|f11/f12|为0.49，第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，使得光学镜头10能够具有良好的成像效果。并且，本实施方式中，第一镜片111的光焦度小于第二镜片112的焦距，即第一镜片111能够具有较好的光线汇聚效果，以更多的将外界的光线汇聚至光学镜头10内，提高光学镜头10的入光量，以使光学镜头10具有更好的成像效果。
本实施方式中，第二镜片组12的第一片镜片121的焦距与最靠近像侧的镜片(即第二片镜片122)的比值为|f21/f2L|为0.0005，第二镜片组12的第一片镜片121及最靠近像侧的镜片(即第二片镜片122)的焦距能够得到合理的分配，使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。并且，本实施方式中，第二镜片组12的第一片镜片121的焦距的绝对值小于最靠近像侧的镜片(即第二片镜片122)的焦距的绝对值，即第二镜片组12的第一片镜片121屈光的程度较高，因此，第二镜片组12在沿轴向移动的过程中，从第一镜片组11入射传输 至第二镜片组12的光线经第一片镜片121后的光线能够第一时间得到调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头10均能够有良好的成像效果。
第二镜片组12的焦距敏感度|1-β^2|为2.38，其中，光线在第二镜片组12上入射角度与出射角度的比值β为1.84。本实施方式中，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
请参阅图24、图25及图26，图24所示为波长分别为656nm、587nm、486nm的光经过第五实施方式的光学镜头10后的垂轴球差曲线图。图24的纵坐标表示的是实际像高，单位为毫米；横坐标表示垂轴方向上的色差，单位为毫米。图25所示为波长为555nm的光经第五实施方式的光学镜头10后的像散场曲图。图25的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。图26所示为波长为555nm的光经过第五实施方式的光学镜头10的畸变图。图26的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第五实施方式的光学镜头10的畸变值，单位为％。从图24中可以看出，本实施方式中，不同波长的光线经本实施方式的光学镜头10后的垂轴球差也控制在一个较小的范围内。从图25中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小。从图26中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小。因此，本实施方式中，光线经本实施方式的光学镜头10后垂轴球差、像散场曲及畸变等均较小，也即本实施方式的光学镜头10能够实现具有较好的成像效果。
请参阅图27a及图27b，图27a所示为本申请第六实施方式的光学镜头10用于远距拍摄时的结构示意图，图27b所示为本申请第六实施方式的光学镜头10用于微距拍摄时的结构示意图。本实施方式中，光学镜头10包括的自物侧至像侧依次设置的第一镜片组11及第二镜片组12。第一镜片组11的镜片为四片，分别为第一镜片111、第二镜片112、第三镜片113、第四镜片114，第一镜片111、第二镜片112、第三镜片113、第四镜片114自物侧至像侧依次设置。第二镜片组12的镜片为两片，分别为第一片镜片121及第二片镜片122，第一片镜片121及第二片镜片122自物侧至像侧依次设置。本实施方式中，第一镜片111、第二镜片112、第三镜片113、第四镜片114、第一片镜片121及第二片镜片122同轴设置。本实施方式中，第一镜片组11的轴向方向为第一镜片111、第二镜片112、第三镜片113、第四镜片114的光轴方向，第二镜片组12的轴向方向为第一片镜片121、第二片镜片122的镜片，第一镜片组11与第二镜片组12同轴。
其中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。第一镜片组11的第一镜片111具有正光焦度，第二镜片112具有负光焦度，第三镜片113及第四镜片114的组合具有正光焦度。第二镜片组12的第一片镜片121及第二片镜片122均具有负光焦度。第二镜片组12的第一片镜片121为弯月型镜片，且第一片镜片121的像侧面为凹面。
本实施方式中，第一镜片组11的第一镜片111为玻璃材质。第一镜片组11的第一镜片111的物侧面及像侧面均为球面，第二镜片112及第三镜片113的物侧面及像侧面均为高次非球面。第二镜片组12的第一片镜片121及第二片镜片122的物侧面及像侧面均为高次非球面。依据上文中关于本申请光学镜头10满足的各关系式，本申请第六实施方式的光学镜头10的 设计参数如下表16。
表16第六实施方式的光学镜头10的设计参数
Figure PCTCN2022087472-appb-000026
表17示出了本实施方式的光学镜头10的各非球面镜片的设计参数。本实施方式中，第一镜片组11的第二镜片112、第三镜片113、第四镜片114，及第二镜片组12的第一片镜片121、第二片镜片122均为非球面镜片。
表17第六实施方式的光学镜头10的各非球面镜片的设计参数
Figure PCTCN2022087472-appb-000027
Figure PCTCN2022087472-appb-000028
通过将上述参数代入至公式：
Figure PCTCN2022087472-appb-000029
，即能够设计得到第一镜片组11的第二镜片112、第三镜片113、第四镜片114，及第二镜片组12的第一片镜片121、第二片镜片122。本实施方式中，
Figure PCTCN2022087472-appb-000030
根据上述各镜片的设计参数得到本实施方式的光学镜头10。本实施方式的光学镜头10的基本参数如表18所示。
表18第六实施方式的光学镜头10基本参数
参数 取值 参数 取值
f1(mm) 9.30 f22(mm) 87.76
f2(mm) -10.62 f(mm) 16.61
f11(mm) 9.9 F#(mm) 3.00
f12(mm) -9.87 IH(mm) 4.5
f13(mm) 25.26 β 1.79
f14(mm) 12.89 |1-β^2| 2.19
f21(mm) -9.82 TTL(mm) 16.278
本实施方式中，光学镜头10的光学总长为16.278mm。本实施方式中，所述第一镜片组11中最靠近所述第二镜片组12的镜片的像侧面与所述第二镜片组12中最靠近所述第一镜片 组11的镜片的物侧面之间的距离d，即为第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离。本实施方式中，光学镜头10处于远距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为1mm；光学镜头10处于微距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为2.68mm。
本实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd为1.68mm，通过短距离的移动即能够实现光学镜头10的不同场景的应用需求，对驱动第二镜片组12移动的驱动结构的要求较小。第二镜片组12可相对所述第一镜片组11移动的距离Δd与光学镜头10的光学总长TTL的比值为0.1。
本实施方式中，光学镜头10的第一镜片组11与第二镜片组12的焦距比值|f1/f2|为0.88,光学镜头10的第一镜片组11与光学镜头10的焦距比值|f1/f|为0.56，光学镜头10的第二镜片组12与光学镜头10的焦距比值|f2/f|为0.64，光学镜头10的第一镜片组11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。且第二镜片组12能够配合第一镜片组11以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。并且，本实施方式中，第一镜片组11的焦距的绝对值小于第二镜片组12的焦距的绝对值，即第一镜片组11的屈光能力较第二镜片组12更强，第一镜片组11具有更强的光线调整能力，第二镜片组12对光线调整作用较小，从而减小第二镜片组12在不同位置之间移动时对光学镜头10的光线调节效果的差别，保证在移动第二镜片组12以调整光学镜头10的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头10的成像效果始终能够较好。
本实施方式中，第一镜片组11中第一镜片111的焦距与第二镜片112的焦距比值为|f11/f12|为1.01，第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，使得光学镜头10能够具有良好的成像效果。
本实施方式中，第二镜片组12的第一片镜片121的焦距与最靠近像侧的镜片(即第二片镜片122)的比值为|f21/f2L|为0.11，第二镜片组12的第一片镜片121及最靠近像侧的镜片(即第二片镜片122)的焦距能够得到合理的分配，使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。并且，本实施方式中，第二镜片组12的第一片镜片121的焦距的绝对值小于最靠近像侧的镜片(即第二片镜片122)的焦距的绝对值，即第二镜片组12的第一片镜片121屈光的程度较高，因此，第二镜片组12在沿轴向移动的过程中，从第一镜片组11入射传输至第二镜片组12的光线经第一片镜片121后的光线能够第一时间得到调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头10均能够有良好的成像效果。
第二镜片组12的焦距敏感度|1-β^2|为2.19，其中，光线在第二镜片组12上入射角度与出射角度的比值β为1.79。本实施方式中，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
请参阅图28、图29及图30，图28所示为波长分别为656nm、587nm、486nm的光经过第六实施方式的光学镜头10后的垂轴球差曲线图。图28的纵坐标表示的是实际像高，单位为毫米；横坐标表示垂轴方向上的色差，单位为毫米。图29所示为波长为555nm的光经第六实施方式的光学镜头10后的像散场曲图。图29的纵坐标表示视场角度，单位为度(°)， 横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。图30所示为波长为555nm的光经过第六实施方式的光学镜头10的畸变图。图30的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第五实施方式的光学镜头10的畸变值，单位为％。从图28中可以看出，本实施方式中，不同波长的光线经本实施方式的光学镜头10后的垂轴球差也控制在一个较小的范围内。从图29中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小。从图30中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小。因此，本实施方式中，光线经本实施方式的光学镜头10后垂轴球差、像散场曲及畸变等均较小，也即本实施方式的光学镜头10能够实现具有较好的成像效果。
请参阅图31a及图31b，图31a所示为本申请第七实施方式的光学镜头10用于远距拍摄时的结构示意图，图31b所示为本申请第七实施方式的光学镜头10用于微距拍摄时的结构示意图。本实施方式中，光学镜头10包括的自物侧至像侧依次设置的第一镜片组11及第二镜片组12。第一镜片组11的镜片为四片，分别为第一镜片111、第二镜片112、第三镜片113、第四镜片114，第一镜片111、第二镜片112、第三镜片113、第四镜片114自物侧至像侧依次设置。第二镜片组12的镜片为两片，分别为第一片镜片121、第二片镜片122及第三片镜片123，第一片镜片121、第二片镜片122及第三片镜片123自物侧至像侧依次设置。本实施方式中，第一镜片111、第二镜片112、第三镜片113、第四镜片114、第一片镜片121、第二片镜片122及第三片镜片123同轴设置。本实施方式中，第一镜片组11的轴向方向为第一镜片111、第二镜片112、第三镜片113、第四镜片114的光轴方向，第二镜片组12的轴向方向为第一片镜片121、第二片镜片122及第三片镜片123的光轴方向，第一镜片组11与第二镜片组12同轴。
其中，第一镜片组11具有正光焦度，第二镜片组12具有负光焦度。第一镜片组11的第一镜片111具有正光焦度，第二镜片112具有负光焦度，第三镜片113及第四镜片114均具有正光焦度。第二镜片组12的第一片镜片121具有负光焦度，第二片镜片122及第三片镜片123均具有正光焦度。第二镜片组12的第一片镜片121为弯月型镜片，且第一片镜片121的像侧面为凹面。
本实施方式中，第一镜片组11的第一镜片111为玻璃材质。第一镜片组11的第一镜片111的物侧面及像侧面均为球面，第二镜片112及第三镜片113的物侧面及像侧面均为高次非球面。第二镜片组12的第一片镜片121及第二片镜片122的物侧面及像侧面均为高次非球面。依据上文中关于本申请光学镜头10满足的各关系式，本申请第七实施方式的光学镜头10的设计参数如下表19。
表19第七实施方式的光学镜头10的设计参数
Figure PCTCN2022087472-appb-000031
Figure PCTCN2022087472-appb-000032
其中，S25表示第二镜片组12的第三片镜片123的物侧面，S26表示第二镜片组12的第三片镜片123的像侧面。需要说明的是，本申请中，S25、S26等符号表示的意义均相同，在后续再次出现时不再进行赘述。
表20示出了本实施方式的光学镜头10的各非球面镜片的设计参数。本实施方式中，第一镜片组11的第二镜片112、第三镜片113、第四镜片114，及第二镜片组12的第一片镜片121、第二片镜片122、第三片镜片123均为非球面镜片。
表20第七实施方式的光学镜头10的各非球面镜片的设计参数
Figure PCTCN2022087472-appb-000033
Figure PCTCN2022087472-appb-000034
通过将上述参数代入至公式：
Figure PCTCN2022087472-appb-000035
，即能够设计得到第一镜片组11的第二镜片112、第三镜片113、第四镜片114，及第二镜片组12的第一片镜片121、第二片镜片122、第三片镜片123。本实施方式中，
Figure PCTCN2022087472-appb-000036
根据上述各镜片的设计参数得到本实施方式的光学镜头10。本实施方式的光学镜头10的基本参数如表21所示。
表21第七实施方式的光学镜头10基本参数
参数 取值 参数 取值
f1(mm) 7.79 f23(mm) 110.92
f2(mm) -9.92 f(mm) 16.61
f11(mm) 9.6 F#(mm) 3.2
f12(mm) -17.58 IH(mm) 4
f13(mm) 26.90 β 2.14
f14(mm) 15.18 |1-β^2| 3.57
f21(mm) -8.11 TTL(mm) 15.909
f22(mm) 877.02    
其中，f23为第二镜片组12的第三片镜片123的焦距。需要说明的是，本申请中，f23等符号表示的意义均相同，在后续再次出现时不再进行赘述。
本实施方式中，光学镜头10的光学总长为15.909mm。本实施方式中，所述第一镜片组11中最靠近所述第二镜片组12的镜片的像侧面与所述第二镜片组12中最靠近所述第一镜片组11的镜片的物侧面之间的距离d，即为第三镜片113的像侧面S16与第一片镜片121的物 侧面S21之间的距离。本实施方式中，光学镜头10处于远距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为1mm；光学镜头10处于微距拍摄状态时，第三镜片113的像侧面S16与第一片镜片121的物侧面S21之间的距离为2.3mm。
本实施方式中，所述第二镜片组12可相对所述第一镜片组11移动的距离Δd为1.3mm，通过短距离的移动即能够实现光学镜头10的不同场景的应用需求，对驱动第二镜片组12移动的驱动结构的要求较小。第二镜片组12可相对所述第一镜片组11移动的距离Δd与光学镜头10的光学总长TTL的比值为0.08。
本实施方式中，光学镜头10的第一镜片组11与第二镜片组12的焦距比值|f1/f2|为0.79，光学镜头10的第一镜片组11与光学镜头10的焦距比值|f1/f|为0.47，光学镜头10的第二镜片组12与光学镜头10的焦距比值|f2/f|为0.59，光学镜头10的第一镜片组11及第二镜片组12的焦距能够得到合理的分配，从而使得光学镜头10能够具有良好的成像效果。且第二镜片组12能够配合第一镜片组11以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。并且，本实施方式中，第一镜片组11的焦距的绝对值小于第二镜片组12的焦距的绝对值，即第一镜片组11的屈光能力较第二镜片组12更强，第一镜片组11具有更强的光线调整能力，第二镜片组12对光线调整作用较小，从而减小第二镜片组12在不同位置之间移动时对光学镜头10的光线调节效果的差别，保证在移动第二镜片组12以调整光学镜头10的焦距，以实现远距拍摄及微距拍摄的同时，光学镜头10的成像效果始终能够较好。
本实施方式中，第一镜片组11中第一镜片111的焦距与第二镜片112的焦距比值为|f11/f12|为0.55，第一镜片组11的第一镜片111及第二镜片112的焦距能够得到合理的分配，使得光学镜头10能够具有良好的成像效果。并且，本实施方式中，第一镜片111的光焦度小于第二镜片112的焦距，即第一镜片111能够具有较好的光线汇聚效果，以更多的将外界的光线汇聚至光学镜头10内，提高光学镜头10的入光量，以使光学镜头10具有更好的成像效果。
本实施方式中，第二镜片组12的第一片镜片121的焦距与最靠近像侧的镜片(即第三片镜片123)的比值为|f21/f2L|为0.07，第二镜片组12的第一片镜片121及最靠近像侧的镜片(即第三片镜片123)的焦距能够得到合理的分配，使得第二镜片组12能够有较好的光线调节效果，从而使得第二镜片组12能够实现较好的焦距调整效果，以在轴向方向移动以实现较好的调整光学镜头10的焦距的效果，保证在不同的使用需求时光学镜头10均能够有较好的拍摄效果。并且，本实施方式中，第二镜片组12的第一片镜片121的焦距的绝对值小于最靠近像侧的镜片(即第三片镜片123)的焦距的绝对值，即第二镜片组12的第一片镜片121屈光程度较高，因此，第二镜片组12在沿轴向移动的过程中，从第一镜片组11入射传输至第二镜片组12的光线经第一片镜片121后的光线能够第一时间得到调整，从而保证采用尽量少的镜片实现在不同的使用场景下得到良好的调整，以保证在不同的使用场景时光学镜头10均能够有良好的成像效果。
第二镜片组12的焦距敏感度|1-β^2|为3.57，其中，光线在第二镜片组12上入射角度与出射角度的比值β为2.14。本实施方式中，第二镜片组12的焦距及光线调控能力在合适的范围内，从而能够实现更好的焦距调整效果，以使光学镜头10能够在不同的使用场景下均能够实现较好的成像效果。
请参阅图32、图33及图34，图32所示为波长分别为656nm、587nm、486nm的光经过第七实施方式的光学镜头10后的垂轴球差曲线图。图32的纵坐标表示的是实际像高，单 位为毫米；横坐标表示垂轴方向上的色差，单位为毫米。图33所示为波长为555nm的光经第七实施方式的光学镜头10后的像散场曲图。图33的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。图34所示为波长为555nm的光经过第七实施方式的光学镜头10的畸变图。图34的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第七实施方式的光学镜头10的畸变值，单位为％。从图32中可以看出，本实施方式中，不同波长的光线经本实施方式的光学镜头10后的垂轴球差也控制在一个较小的范围内。从图33中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小。从图34中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小。因此，本实施方式中，光线经本实施方式的光学镜头10后垂轴球差、像散场曲及畸变等均较小，也即本实施方式的光学镜头10能够实现具有较好的成像效果。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (20)

  1. 一种光学镜头，其特征在于，包括自物侧至像侧排列的第一镜片组及第二镜片组，且所述第一镜片组及所述第二镜片组同轴设置；所述第一镜片组及所述第二镜片组均包括多片镜片，每片所述镜片均包括朝向所述物侧的物侧面及朝向所述像侧的像侧面；所述第一镜片组具有正光焦度，所述第二镜片组具有负光焦度；所述第二镜片组可沿轴向相对所述第一镜片组移动，所述第二镜片组可相对所述第一镜片组移动的距离Δd满足：Δd≤4mm。
  2. 根据权利要求1所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    TTL≤25mm；
    其中，TTL为所述光学镜头的光学总长。
  3. 根据权利要求1或2所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    F#≥2；
    其中，F#为所述光学镜头的光圈F值。
  4. 根据权利要求1-3任一项所述的光学镜头，其特征在于，所述第一镜片组位置固定。
  5. 根据权利要求1-4任一项所述的光学镜头，其特征在于，所述第一镜片组的镜片包括自物侧至像侧依次设置的第一镜片及第二镜片，所述第一镜片具有正光焦度，所述第二镜片具有负光焦度，所述第一镜片组除所述第一镜片及所述第二镜片外的其它镜片的组合光焦度为正光焦度。
  6. 根据权利要求1-5任一项所述的光学镜头，其特征在于，所述第二镜片组中最靠近物侧的第一片镜片为弯月镜片，所述第一片镜片的像侧面为凹面。
  7. 根据权利要求1-6任一项所述的光学镜头，其特征在于，所述第一镜片组包括3～4片镜片，所述第二镜片组包括2～3片所述镜片。
  8. 根据权利要求1-7任一项所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    0.4<|f1/f2|<1.1；
    其中，f1为所述第一镜片组的焦距，f2为所述第二镜片组的焦距。
  9. 根据权利要求8所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    0.4<|f1/f2|<1；
    其中，f1为所述第一镜片组的焦距，f2为所述第二镜片组的焦距。
  10. 根据权利要求1-9任一项所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    0.4<|f2/f|<1；
    其中，f2为所述第二镜片组的焦距，f为所述光学镜头的所述第一镜片组及所述第二镜片组位置最为接近时的焦距。
  11. 根据权利要求1-10任一项所述的光学镜头，其特征在于，所述光学镜头的第一镜片组满足下列关系式：
    0.2<|f11/f12|<1.1；
    其中，f11为所述第一镜片组的所述第一镜片的焦距，f12为所述第一镜片组的所述第二镜片的焦距。
  12. 根据权利要求11所述的光学镜头，其特征在于，所述光学镜头的第一镜片组满足下列关系式：
    0.2<|f11/f12|<1；
    其中，f11为所述第一镜片组的所述第一镜片的焦距，f12为所述第一镜片组的所述第二镜片的焦距。
  13. 根据权利要求1-12任一项所述的光学镜头，其特征在于，所述光学镜头的所述第二镜片组满足下列关系式：
    |f21/f2L|<10；
    其中，f21为所述第二镜片组的所述第一片镜片的焦距，f2L为所述第二镜片组中最靠近所述像侧的所述镜片的焦距。
  14. 根据权利要求13所述的光学镜头，其特征在于，所述光学镜头的所述第二镜片组满足下列关系式：
    |f21/f2L|<1；
    其中，f21为所述第二镜片组的所述第一片镜片的焦距，f2L为所述第二镜片组中最靠近所述像侧的所述镜片的焦距。
  15. 根据权利要求1-14所述的光学镜头，其特征在于，所述光学镜头的所述第二镜片组满足下列关系式：
    1.4<|1-β^2|<3.8；
    其中，β为光线在所述第二镜片组上的入射角度与出射角度的比值，1-β^2为所述第二镜片组的焦距敏感度。
  16. 根据权利要求1-15任一项所述的光学镜头，其特征在于，所述第一镜片组中最靠近所述物侧的镜片为玻璃材质，所述第一镜片组中最靠近所述物侧的镜片为球面镜片。
  17. 根据权利要求1-16任一项所述的光学镜头，其特征在于，所述第一镜片组的多片所述镜片中至少包括4个非球面；所述第二镜片组的所述镜片均为非球面镜片。
  18. 根据权利要求1-17任一项的所述光学镜头，其特征在于，所述光学镜头还包括光路偏折元件，所述光路偏折元件设于所述第一镜片组件远离所述第二镜片组件的一侧，光线经所述光路偏折组件折叠后依次经所述第一镜片组件及所述第二镜片组件出射。
  19. 一种摄像头模组，其特征在于，包括感光元件和如权利要求1至18中任一项所述的光学镜头，所述感光元件位于所述光学镜头的像侧，光线经所述光学镜头后投射至所述感光元件；所述第一镜片组件与所述感光元件之间的距离保持不变，所述第二镜片组件可沿光轴在所述第一镜片组件与所述感光元件之间移动。
  20. 一种电子设备，其特征在于，包括图像处理器和如权利要求19所述的摄像头模组，所述图像处理器与所述摄像头模组通信连接，所述摄像头模组用于获取图像数据并将所述图像数据输入到所述图像处理器中，所述图像处理器用于对输出其中的所述图像数据进行处理。
PCT/CN2022/087472 2021-04-28 2022-04-18 光学镜头、摄像头模组和电子设备 Ceased WO2022228189A1 (zh)

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