WO2023016373A1 - 光学镜头、光学模组及电子设备 - Google Patents

光学镜头、光学模组及电子设备 Download PDF

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Publication number
WO2023016373A1
WO2023016373A1 PCT/CN2022/110569 CN2022110569W WO2023016373A1 WO 2023016373 A1 WO2023016373 A1 WO 2023016373A1 CN 2022110569 W CN2022110569 W CN 2022110569W WO 2023016373 A1 WO2023016373 A1 WO 2023016373A1
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Prior art keywords
lens
optical
optical axis
facing
object side
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PCT/CN2022/110569
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English (en)
French (fr)
Inventor
冯涛
王海燕
黄威
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Vivo Mobile Communication Hangzhou Co Ltd
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Vivo Mobile Communication Hangzhou Co Ltd
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Application filed by Vivo Mobile Communication Hangzhou Co Ltd filed Critical Vivo Mobile Communication Hangzhou Co Ltd
Priority to EP22855354.1A priority Critical patent/EP4386462B1/en
Priority to ES22855354T priority patent/ES3057153T3/es
Publication of WO2023016373A1 publication Critical patent/WO2023016373A1/zh
Priority to US18/428,347 priority patent/US12591116B2/en
Anticipated expiration legal-status Critical
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    • 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
    • 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
    • G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
    • G02B13/0065—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having a beam-folding prism or mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/005—Diaphragms

Definitions

  • the application belongs to the technical field of communication equipment, and in particular relates to an optical lens, an optical module and electronic equipment.
  • the aperture of the periscope camera cannot be enlarged, and the amount of light transmitted is small, which leads to the problem of poor imaging quality under dark light conditions.
  • Embodiments of the present application provide an optical lens, an optical module, and an electronic device to solve the problem of poor imaging quality of existing intelligent electronic devices under dark light conditions.
  • an embodiment of the present application provides an optical lens, which sequentially includes from the object side to the image side:
  • a first lens a reflector, a diaphragm, a second lens, a third lens, a fourth lens and a fifth lens;
  • the first lens has a positive refractive power
  • the surface of the first lens facing the object side is concave near the optical axis
  • the surface of the first lens facing the image side is concave near the optical axis is convex
  • the second lens has positive refractive power, and the surface of the second lens facing the object side is convex near the optical axis;
  • the reflector is used to reflect the incident light transmitted by the first lens so that it is transmitted to the second lens;
  • the third lens has a negative refractive power, the surface of the third lens facing the object side is convex near the optical axis, and the surface of the third lens facing the image side is convex near the optical axis concave surface
  • the fourth lens has a bending force, the surface of the fourth lens facing the object side is convex near the optical axis, and the surface of the fourth lens facing the image side is concave near the optical axis ;
  • the fifth lens has a bending force.
  • the embodiment of the present application further provides an optical module, including: the optical lens as described in the embodiment of the first aspect.
  • the embodiment of the present application further provides an electronic device, including the optical module as described in the embodiment of the second aspect.
  • the optical lens includes in sequence from the object side to the image side: a first lens, a reflector, a diaphragm, a second lens, a third lens, a fourth lens, and a fifth lens;
  • the first lens A lens has positive refraction power, the surface of the first lens toward the object side is concave near the optical axis, and the surface of the first lens toward the image side is convex near the optical axis;
  • the second lens has a positive refracting force, and the surface of the second lens toward the object side is a convex surface near the optical axis;
  • the reflector is used to reflect the incident light emitted by the first lens, so that transmitted to the second lens;
  • the third lens has a negative refractive power, the surface of the third lens toward the object side is convex near the optical axis, and the surface of the third lens toward the image side
  • the surface of the fourth lens is concave near the optical axis;
  • the fourth lens has a bending
  • Fig. 1 is one of the schematic diagrams of the hardware structure of the optical lens provided by the embodiment of the present application;
  • FIG. 2 is the second schematic diagram of the hardware structure of the optical lens provided by the embodiment of the present application.
  • Fig. 3 is the third schematic diagram of the hardware structure of the optical lens provided by the embodiment of the present application.
  • Fig. 4 is one of the schematic diagrams corresponding to the vertical axis chromatic aberration curve of the optical lens shown in Fig. 1;
  • Fig. 5 is one of the schematic diagrams corresponding to the axial chromatic aberration curve of the optical lens shown in Fig. 1;
  • Fig. 6 is one of the schematic diagrams corresponding to the astigmatism curve of the optical lens shown in Fig. 1;
  • Fig. 7 is one of the schematic diagrams corresponding to the distortion curve of the optical lens shown in Fig. 1;
  • Fig. 8 is the second schematic diagram of the vertical axis chromatic aberration curve corresponding to the optical lens shown in Fig. 2;
  • Fig. 9 is the second schematic diagram of the axial chromatic aberration curve corresponding to the optical lens shown in Fig. 2;
  • Fig. 10 is the second schematic diagram of the astigmatism curve corresponding to the optical lens shown in Fig. 2;
  • Fig. 11 is the second schematic diagram of the distortion curve corresponding to the optical lens shown in Fig. 2;
  • Fig. 12 is the third schematic diagram of the vertical axis chromatic aberration curve corresponding to the optical lens shown in Fig. 3;
  • Fig. 13 is the third schematic diagram of the axial chromatic aberration curve corresponding to the optical lens shown in Fig. 3;
  • Fig. 14 is the third schematic diagram corresponding to the astigmatism curve of the optical lens shown in Fig. 3;
  • FIG. 15 is the third schematic diagram corresponding to the distortion curve of the optical lens shown in FIG. 3 .
  • optical lens provided by the embodiment of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.
  • FIG. 1 to 3 it is a schematic diagram of the hardware structure of the optical lens provided by the embodiment of the present application.
  • the optical lens includes in sequence from the object side to the image side: a first lens 1, a reflector 2, a diaphragm 3, The second lens 4, the third lens 5, the fourth lens 6 and the fifth lens 7;
  • the first lens 1 has a positive refractive power
  • the surface S1 of the first lens 1 facing the object side is concave near the optical axis 8
  • the surface S1 of the first lens 1 facing the image side The surface S2 is convex near the optical axis 8;
  • the surface S1 of the first lens 1 facing the object side is a concave surface curved away from the object side near the optical axis 8
  • the surface S2 of the first lens 1 facing the object side Near the optical axis 8 is a convex surface that is curved toward the image side.
  • the second lens 4 has a positive refractive power, and the surface S3 of the second lens 4 facing the object side is a convex surface near the optical axis 8;
  • the surface S3 of the second lens 4 facing the object side is a convex surface curved in a direction close to the object side near the optical axis 8
  • the surface S4 of the second lens 4 facing the image side is The place near the optical axis 8 may be a convex surface curved toward the image side, or a concave surface curved away from the image side, which is specifically related to the bending force of the fourth lens 6 and the fifth lens 7 .
  • the reflector 2 is used to reflect the incident light transmitted by the first lens 1 and transmit it to the second lens 4;
  • the reflector 2 is a triangular prism.
  • the section of the triangular prism is a right triangle. Specifically, one right-angled surface of the triangular prism faces the first lens 1 , and the other right-angled surface of the triangular prism faces the second lens 4 .
  • the reflective surface 21 of the reflector 2, that is, the slope of the triangular prism, is used to reflect the incident light transmitted by the first lens 1, and make it transmitted to the second lens 4, that is, the reflector 2 can make the light from the first lens
  • the light emitted from 1 is bent and then transmitted to the second lens 4, which can effectively reduce the installation space occupied by the optical lens on the basis of changing the direction of the light path.
  • the diaphragm 3 is disposed on the edge of the surface S3 of the second lens 4 facing the object side.
  • the third lens 5 has a negative refractive power, the surface S5 of the third lens 5 facing the object side is a convex surface near the optical axis 8, the surface S6 of the third lens 5 facing the image side It is concave near the optical axis 8;
  • the surface S5 of the third lens 5 facing the object side is a convex surface curved in a direction close to the object side near the optical axis 8
  • the surface S6 of the third lens 5 facing the image side is Near the optical axis 8 is a concave surface that bends away from the image side.
  • the fourth lens 6 has a bending force, the surface S7 of the fourth lens 6 facing the object side is a convex surface near the optical axis 8, and the surface S8 of the fourth lens 6 facing the image side is A concave surface near the optical axis 8;
  • the surface S7 of the fourth lens 6 facing the object side is a convex surface curved in a direction close to the object side near the optical axis 8
  • the surface S8 of the fourth lens 6 facing the image side is Near the optical axis 8 is a concave surface that bends away from the image side.
  • the fifth lens 7 has a bending force.
  • the surface of the above-mentioned lens facing the object side may be referred to as an object side
  • the surface facing the image side may be referred to as an image side
  • the object side of the lens specifically refers to the side away from the photosensitive element
  • the image side of the lens specifically refers to the side close to the photosensitive element.
  • the bending power of the lens refers to the focusing ability or the diffusing ability of the lens on the light.
  • a lens with positive refraction power means that the lens can focus the incident light beam;
  • a lens with negative refraction power means that the lens can widen the width of the incident light beam.
  • the optical lens satisfies the following relationship:
  • HFOV means the horizontal field of view of the optical lens
  • F/NO represents the aperture number of the optical lens.
  • the surface S4 of the second lens 4 facing the image side is convex near the optical axis 8; the fourth lens 6 Bending force is negative bending force;
  • the refraction force of the fifth lens 7 is a positive refraction force
  • the surface S9 of the fifth lens 7 towards the object side is a convex surface near the optical axis 8
  • the surface S9 of the fifth lens 7 towards the image side The surface S10 of is concave near the optical axis 8.
  • the surface S9 of the fifth lens 7 facing the object side is a convex surface curved in a direction close to the object side near the optical axis 8
  • the surface S10 of the fifth lens 7 facing the image side is Near the optical axis 8 is a concave surface that bends away from the image side.
  • the surface S4 of the second lens 4 facing the image side is concave near the optical axis 8, and the bending force of the fourth lens 6 is positive bending force;
  • the refraction force of the fifth lens 7 is a negative refraction force
  • the surface S9 of the fifth lens 7 toward the object side is a convex surface near the optical axis 8
  • the surface S9 of the fifth lens 7 toward the image side The surface S10 of is convex near the optical axis 8.
  • the surface S9 of the fifth lens 7 facing the object side is a convex surface curved in a direction close to the object side near the optical axis 8
  • the surface S10 of the fifth lens 7 facing the image side is Near the optical axis 8 is a convex surface that bends toward the image side.
  • the included angle between the reflective surface 21 of the reflective member 2 and the optical axis 8 corresponding to the first lens 1 is 45 degrees.
  • the reflective surface 21 of the reflector 2 can bend the light emitted from the first lens 1 by 90 degrees and then transmit it to the second lens 4, and can effectively reduce the occupation of the optical lens on the basis of changing the direction of the optical path. installation space.
  • the focal length of the first lens 1 satisfies the following relationship:
  • EFL1 represents the focal length of the first lens.
  • the focal length of the first lens 1 by controlling the focal length of the first lens 1 to a smaller positive value, a first lens with a larger positive refractive power can be obtained, so that the first lens 1 can effectively reduce the light height and meet the requirements of miniaturization of the optical lens. At the same time, increase the amount of light entering.
  • the optical lens satisfies the following relationship:
  • DL represents the length between the surface S3 of the second lens 4 facing the object side and the surface S10 of the fifth lens 7 facing the image side along the optical axis direction
  • EFL represents the The effective focal length of the above optical lens.
  • the first lens 1 , the second lens 4 , the third lens 5 , the fourth lens 6 and the fifth lens 7 are all aspheric lenses.
  • x is the distance vector height of the aspheric surface from the apex of the aspheric surface at the position of height h along the optical axis;
  • c is the paraxial curvature of the aspheric surface, which is the reciprocal of the radius of curvature of the aspheric surface;
  • k is the aspheric surface Conic coefficient;
  • Ai is the i-th order correction coefficient of the aspheric surface.
  • the refractive index, Abbe number and focal length of the optical lens are all based on the light with a wavelength of 555.00nm as a reference, wherein, Table 1 is the lens data of the optical lens; Table 2 is each of the optical lens Higher order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 for aspheric surfaces.
  • TTL in the table is the distance on the optical axis from the object side of the first lens 1 to the imaging plane of the photosensitive element; Imgh is half of the diagonal length of the effective pixel area of the optical lens.
  • distance. 0.571 represents the gap distance between the side of the reflector facing the second lens 4 and the stop STO.
  • S1 in the table represents the object side of the first lens 1 (surface toward the object side), S2 represents the image side of the first lens 1 (surface toward the image side); S3 represents the object side of the second lens 4, and S4 represents the second lens 4.
  • S10 represents the image side of the fifth lens 7.
  • S11 and S12 represent the two opposite surfaces of the filter in the optical module including the optical lens
  • S13 represents the imaging surface of the photosensitive element in the optical module including the optical lens
  • the optical lens of the size range in the above example is used, corresponding to the schematic diagram of the vertical axis chromatic aberration curve as shown in Figure 4 (wherein, the abscissa in the figure indicates the size of the vertical axis chromatic aberration, and the unit is micron; the ordinate indicates the actual image height, the unit is mm), the schematic diagram of the axial chromatic aberration curve as shown in Figure 5 (wherein, the abscissa in this figure represents the size of the axial chromatic aberration, and the unit is millimeter; the ordinate represents the normalized radius of the entrance pupil, without unit), such as The schematic diagram of the astigmatism curve shown in Figure 6 (wherein, the abscissa of this figure represents the size of the astigmatism, and the unit is millimeter; the vertical coordinate represents the number of fields of view, without unit) and the schematic diagram of the distortion curve as shown in Figure 7 (wherein, The abscissa of the figure indicates the magnitude of the distortion, without
  • the vertical axis chromatic aberration curve indicates the deviation of different image heights on the imaging surface after the light passes through the lens;
  • the axial chromatic aberration curve indicates the deviation of the focal point of the light of different wavelengths after passing through the lens;
  • the astigmatism curve indicates the curvature of the meridian plane image surface and The sagittal image plane is curved;
  • the distortion curve indicates the distortion value corresponding to different viewing angles.
  • the refractive index, Abbe number and focal length of the optical lens are all based on the light with a wavelength of 555.00nm as a reference, wherein, Table 3 is the lens data of the optical lens; Table 4 is each of the optical lens Higher order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 for aspheric surfaces.
  • 0.803 represents the gap distance between the side of the reflector facing the second lens 4 and the stop STO.
  • the optical lens in the size range in the above example corresponds to the schematic diagram of the vertical axis chromatic aberration curve as shown in Figure 8 (wherein, the abscissa in this figure indicates the size of the vertical axis chromatic aberration, and the unit is micron; the ordinate indicates the actual image height, the unit is mm), the schematic diagram of the axial chromatic aberration curve as shown in Figure 9 (wherein, the abscissa in this figure represents the size of the axial chromatic aberration, and the unit is millimeter; the ordinate represents the normalized radius of the entrance pupil, without unit), such as The schematic diagram of the astigmatism curve shown in Figure 10 (wherein, the abscissa of this figure represents the size of the astigmatism, and the unit is millimeter; the vertical coordinate represents the number of fields of view, without unit) and the schematic diagram of the distortion curve as shown in Figure 11 (wherein, The abscissa of the figure indicates the magnitude of the distortion, without unit,
  • the structure of the optical lens, the refractive index, Abbe number and focal length of the optical lens are all based on light with a wavelength of 555.00nm, wherein Table 5 is the lens data of the optical lens; Table 6 is The high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of each aspheric surface of the optical lens.
  • 0.597 represents the gap distance between the side of the reflector facing the second lens 4 and the stop STO.
  • the optical lens of the size range in the above example is used, corresponding to the schematic diagram of the vertical axis chromatic aberration curve as shown in Figure 12 (wherein, the abscissa in this figure indicates the size of the vertical axis chromatic aberration, and the unit is micron; the ordinate indicates the actual image height, the unit is mm), the schematic diagram of the axial chromatic aberration curve as shown in Figure 13 (wherein, the abscissa in this figure represents the size of the axial chromatic aberration, and the unit is millimeter; the ordinate represents the normalized radius of the entrance pupil, without units), such as The schematic diagram of the astigmatism curve shown in Figure 14 (wherein, the abscissa of this figure represents the size of the astigmatism, and the unit is millimeter; the vertical coordinate represents the number of fields of view, without unit) and the schematic diagram of the distortion curve as shown in Figure 15 (wherein, The abscissa of the figure indicates the magnitude of the distortion, without
  • the value range of the equivalent focal length of the optical lens in the embodiment of the present application is 125mm-250mm. That is, it is equivalent to 5 times focal length to 10 times focal length.
  • the optical lens of the embodiment of the present application includes in sequence from the object side to the image side: a first lens, a reflector, a diaphragm, a second lens, a third lens, a fourth lens, and a fifth lens; wherein the first lens The lens has a positive refractive power, the surface of the first lens facing the object side is concave near the optical axis, and the surface of the first lens facing the image side is convex near the optical axis;
  • the second lens has a positive refractive power, and the surface of the second lens facing the object side is a convex surface near the optical axis; the reflector is used to reflect the incident light emitted by the first lens and make it transmit to the second lens;
  • the third lens has a negative refractive power, the surface of the third lens towards the object side is a convex surface near the optical axis, and the surface of the third lens towards the image side
  • the surface is concave near the optical axis;
  • the fourth lens
  • the embodiment of the present application also provides an optical module, including the optical lens as described in the above embodiment.
  • the optical module of the embodiment of the present application further includes:
  • the optical filter 10 is arranged between the fifth lens 7 of the optical lens and the photosensitive element 9 .
  • the two opposite surfaces of the filter 10 are denoted as S11 and S12 respectively.
  • the imaging surface of the photosensitive element 9 is denoted as S13.
  • the filter 10 is an infrared filter.
  • the embodiment of the present application also provides an electronic device, including the above-mentioned optical module.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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Abstract

一种光学镜头、光学模组及电子设备。光学镜头自物侧至像侧依序包括：第一透镜（1）、反射件（2）、光阑（3）、第二透镜（4）、第三透镜（5）、第四透镜（6）和第五透镜（7）；其中，第一透镜（1）具有正曲折力，其朝向物侧的表面（S1）在靠近光轴（8）处为凹面，朝向像侧的表面（S2）在靠近光轴（8）处为凸面；第二透镜（4）具有正曲折力，其朝向物侧的表面（S3）在靠近光轴（8）处为凸面；第三透镜（3）具有负曲折力，其朝向物侧的表面（S5）在靠近光轴（8）处为凸面，朝向像侧的表面（S6）在靠近光轴（8）处为凹面；第四透镜（6）具有曲折力，其朝向物侧的表面（S7）在靠近光轴（8）处为凸面，朝向像侧的表面（S8）在靠近光轴（8）处为凹面；第五透镜（7）具有曲折力。

Description

光学镜头、光学模组及电子设备
相关申请的交叉引用
本申请主张在2021年08月12日在中国提交的中国专利申请No.202110925916.8的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信设备技术领域，具体涉及一种光学镜头、光学模组及电子设备。
背景技术
目前随着移动通信技术的不断发展，如手机、无人机、平板电脑等智能电子设备小型化超薄化的发展趋势使得光学镜头整体体积不断被压缩。但如果要实现更高品质的摄像功能，过度压缩镜头体积则会牺牲成像的像质，于是潜望式摄像镜头应运而生，在不改变终端产品超薄小型化的同时，又能避免压缩镜头体积，实现高清晰图像拍摄效果的可能。目前各式各样的潜望式镜头凭借着其长度及变焦优势占据各高端手机摄像的主导地位，深受消费者喜欢。
由于设有潜望式镜头的智能电子设备整机厚度的限制，潜望式摄像头的口径无法做大，通光量较小，从而导致在暗光条件下成像质量差的问题。
发明内容
本申请实施例提供一种光学镜头、光学模组及电子设备，以解决现有智能电子设备在暗光条件下成像质量差的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请的实施例提供了一种光学镜头，自物侧至像侧依序包括：
第一透镜、反射件、光阑、第二透镜、第三透镜、第四透镜和第五透镜；
其中，所述第一透镜具有正曲折力，所述第一透镜的朝向所述物侧的表面在靠近光轴处为凹面，所述第一透镜的朝向所述像侧的表面在靠近光轴处为凸面；
所述第二透镜具有正曲折力，所述第二透镜的朝向所述物侧的表面在靠近光轴处为凸面；
所述反射件用于反射所述第一透镜透出的入射光线，使其透射到所述第二透镜；
所述第三透镜具有负曲折力，所述第三透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第三透镜的朝向所述像侧的表面在靠近光轴处为凹面；
所述第四透镜具有曲折力，所述第四透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第四透镜的朝向所述像侧的表面在靠近光轴处为凹面；
所述第五透镜具有曲折力。
第二方面，本申请的实施例还提供了一种光学模组，包括：如第一方面实施例所述的光学镜头。
第三方面，本申请实施例还提供了一种电子设备，包括如第二方面实施例所述的光学模组。
在本申请实施例中，光学镜头自物侧至像侧依序包括：第一透镜、反射件、光阑、第二透镜、第三透镜、第四透镜和第五透镜；其中，所述第一透镜具有正曲折力，所述第一透镜的朝向所述物侧的表面在靠近光轴处为凹面，所述第一透镜的朝向所述像侧的表面在靠近光轴处为凸面；所述第二透镜具有正曲折力，所述第二透镜的朝向所述物侧的表面在靠近光轴处为凸面；所述反射件用于反射所述第一透镜透出的入射光线，使其透射到所述第二透镜；所述第三透镜具有负曲折力，所述第三透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第三透镜的朝向所述像侧的表面在靠近光轴处为凹面；所述第四透镜具有曲折力，所述第四透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第四透镜朝向所述像侧的表面在靠近光轴处为凹面；所述第五透镜具有曲折力，如此，具有上述结构的光学镜头，能够在增加光学镜头的 焦距的同时增加进光量，在应用到电子设备上时，能够满足暗光条件下的远摄成像需求。
附图说明
图1为本申请实施例提供的光学镜头的硬件结构示意图之一；
图2为本申请实施例提供的光学镜头的硬件结构示意图之二；
图3为本申请实施例提供的光学镜头的硬件结构示意图之三；
图4为对应图1所示的光学镜头的垂轴色差曲线示意图之一；
图5为对应图1所示的光学镜头的轴向色差曲线示意图之一；
图6为对应图1所示的光学镜头的像散曲线示意图之一；
图7为对应图1所示的光学镜头的畸变曲线示意图之一；
图8为对应图2所示的光学镜头的垂轴色差曲线图示意图之二；
图9为对应图2所示的光学镜头的轴向色差曲线示意图之二；
图10为对应图2所示的光学镜头的像散曲线示意图之二；
图11为对应图2所示的光学镜头的畸变曲线示意图之二；
图12为对应图3所示的光学镜头的垂轴色差曲线示意图之三；
图13为对应图3所示的光学镜头的轴向色差曲线示意图之三；
图14为对应图3所示的光学镜头的像散曲线示意图之三；
图15为对应图3所示的光学镜头的畸变曲线示意图之三。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数 据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的光学镜头进行详细地说明。
如图1～图3所示，为本申请实施例提供的光学镜头的硬件结构示意图，该光学镜头，自物侧至像侧依序包括：第一透镜1、反射件2、光阑3、第二透镜4、第三透镜5、第四透镜6和第五透镜7；
其中，所述第一透镜1具有正曲折力，所述第一透镜1的朝向所述物侧的表面S1在靠近光轴8处为凹面，所述第一透镜1的朝向所述像侧的表面S2在靠近光轴8处为凸面；
需要说明的是，第一透镜1的朝向所述物侧的表面S1在靠近光轴8处为向远离所述物侧的方向弯曲的凹面，第一透镜1的朝向所述物侧的表面S2在靠近光轴8处为向靠近所述像侧的方向弯曲的凸面。
所述第二透镜4具有正曲折力，所述第二透镜4的朝向所述物侧的表面S3在靠近光轴8处为凸面；
需要说明的是，第二透镜4的朝向所述物侧的表面S3在靠近光轴8处为靠近所述物侧的方向弯曲的凸面，第二透镜4的朝向所述像侧的表面S4在靠近光轴8处可以为向靠近所述像侧的方向弯曲的凸面，也可以为向远离所述像侧的方向弯曲的凹面，具体与第四透镜6和第五透镜7的曲折力相关。
所述反射件2用于反射所述第一透镜1透出的入射光线，使其透射到所述第二透镜4；
可选的，所述反射件2为三角棱镜。其中，该三角棱镜的截面为直角三角形。具体的，三角棱镜的一个直角面朝向第一透镜1，三角棱镜的另一直角面朝向第二透镜4。反射件2的反射面21，即三角棱镜的斜面，用于反射 所述第一透镜1透出的入射光线，使其透射到所述第二透镜4，即反射件2能够使从第一透镜1射出的光线发生弯折后再透射到第二透镜4，在改变光路方向的基础上还可有效缩小光学镜头占用的安装空间。
可选地，光阑3设于第二透镜4的朝向所述物侧的表面S3的边缘。
所述第三透镜5具有负曲折力，所述第三透镜5的朝向所述物侧的表面S5在靠近光轴8处为凸面，所述第三透镜5的朝向所述像侧的表面S6在靠近光轴8处为凹面；
需要说明的是，第三透镜5的朝向所述物侧的表面S5在靠近光轴8处为靠近所述物侧的方向弯曲的凸面，第三透镜5的朝向所述像侧的表面S6在靠近光轴8处为向远离所述像侧的方向弯曲的凹面。
所述第四透镜6具有曲折力，所述第四透镜6的朝向所述物侧的表面S7在靠近光轴8处为凸面，所述第四透镜6的朝向所述像侧的表面S8在靠近光轴8处为凹面；
需要说明的是，第四透镜6的朝向所述物侧的表面S7在靠近光轴8处为靠近所述物侧的方向弯曲的凸面，第四透镜6的朝向所述像侧的表面S8在靠近光轴8处为向远离所述像侧的方向弯曲的凹面。
所述第五透镜7具有曲折力。
这里，上述透镜的朝向所述物侧的表面可称为物侧面，朝向所述像侧的表面可称为像侧面。具体的，透镜的物侧面具体指的是远离感光元件的一面，透镜的像侧面具体指的是靠近感光元件的一面。
这里，透镜的曲折力是指透镜对光线的聚焦能力或者扩散能力。具体的，具有正曲折力的透镜表示该透镜能够聚焦入射光束；具有负曲折力的透镜表示该透镜能够扩宽入射光线宽度。
可选地，所述光学镜头满足以下关系式：
10°＜HFOV＜20°，HFOV表示所述光学镜头的水平视场角；
1.8＜F/NO＜2.5，F/NO表示所述光学镜头的光圈数。
如图1和图2所示，作为一可选的第一实现方式，所述第二透镜4的朝 向所述像侧的表面S4在靠近光轴8处为凸面；所述第四透镜6的曲折力为负曲折力；
所述第五透镜7的曲折力为正曲折力，所述第五透镜7的朝向所述物侧的表面S9在靠近光轴8处为凸面，所述第五透镜7的朝向所述像侧的表面S10在靠近光轴8处为凹面。
需要说明的是，第五透镜7的朝向所述物侧的表面S9在靠近光轴8处为靠近所述物侧的方向弯曲的凸面，第五透镜7的朝向所述像侧的表面S10在靠近光轴8处为向远离所述像侧的方向弯曲的凹面。
如图3所示，作为一可选的第二实现方式，所述第二透镜4的朝向所述像侧的表面S4在靠近光轴8处为凹面，所述第四透镜6的曲折力为正曲折力；
所述第五透镜7的曲折力为负曲折力，所述第五透镜7的朝向所述物侧的表面S9在靠近光轴8处为凸面，所述第五透镜7的朝向所述像侧的表面S10在靠近光轴8处为凸面。
需要说明的是，第五透镜7的朝向所述物侧的表面S9在靠近光轴8处为靠近所述物侧的方向弯曲的凸面，第五透镜7的朝向所述像侧的表面S10在靠近光轴8处为向靠近所述像侧的方向弯曲的凸面。
可选地，所述反射件2的反射面21与对应所述第一透镜1的光轴8之间的夹角为45度。
也就是说，反射件2的反射面21能够使从第一透镜1射出的光线发生90度的弯折后再透射到第二透镜4，在改变光路方向的基础上还可有效缩小光学镜头占用的安装空间。
作为一可选的实现方式，所述第一透镜1的焦距满足下述关系式：
0＜EFL1＜50mm，EFL1表示所述第一透镜的焦距。
需要说明的是，通过控制第一透镜1的焦距为较小正值，能够得到具有较大正光焦度的第一透镜，这样通过第一透镜1能够有效降低光线高度，满足光学镜头小型化的同时，增加进光量。
作为一可选的实现方式，所述光学镜头满足下述关系式：
DL/EFL≤0.55，DL表示沿光轴方向，第二透镜4的朝向所述物侧的表面S3到所述第五透镜7的朝向所述像侧的表面S10之间的长度，EFL表示所述光学镜头的有效焦距。
可选地，所述第一透镜1、所述第二透镜4、所述第三透镜5、所述第四透镜6、所述第五透镜7均为非球面透镜。
需要说明的是，本申请实施例的光学镜头所使用的非球面公式定义如下：
Figure PCTCN2022110569-appb-000001
其中，x为非球面沿光轴方向在高度为h的位置时，距非球面顶点的距离矢高；c为非球面的近轴曲率，其为非球面的曲率半径的倒数；k为非球面的圆锥系数；Ai是非球面的第i阶的修正系数。
下面就三个实施例，具体说明本申请实施例的光学镜头的具体实施的参数。
实施例一
参见图1的光学镜头的结构，该光学镜头的折射率、阿贝数和焦距均以波长为555.00nm的光线为参考，其中，表1为光学镜头的镜头数据；表2为光学镜头的各非球面的高阶系数A4、A6、A8、A10、A12、A14、A16、A18和A20。
表1
Figure PCTCN2022110569-appb-000002
Figure PCTCN2022110569-appb-000003
其中，表格中的TTL为第一透镜1的物侧面至感光元件的成像面于光轴上的距离；Imgh为光学镜头的有效像素区域对角线长的一半。
需要说明的是，表格中S2所在行和Stop所在行之间的三行中的参数对应表示的是反射件的参数。
具体的，3.550表示反射件中的斜面中点到反射件中面向第一透镜1的一面的垂直距离；-3.550表示反射件中的斜面中点到反射件中面向第二透镜4的一面的垂直距离。0.571表示反射件中面向第二透镜4的一面与光阑STO之间的间隙距离。
表格中的S1表示第一透镜1的物侧面(朝向物侧的表面)，S2表示第一透镜1的像侧面(朝向像侧的表面)；S3表示第二透镜4的物侧面，S4表示第二透镜4的像侧面；S5表示第三透镜5的物侧面，S6表示第三透镜5的像侧面；S7表示第四透镜6的物侧面，S8表示第四透镜6的像侧面；S9表示第五透镜7的物侧面，S10表示第五透镜7的像侧面。
S11和S12表示包括光学镜头的光学模组中滤光片相对的两个表面，S13表示包括光学镜头的光学模组中感光元件的成像面。
表2
Figure PCTCN2022110569-appb-000004
Figure PCTCN2022110569-appb-000005
采用上述示例中的尺寸范围的光学镜头，对应如图4所示的垂轴色差曲线的示意图(其中，该图中横坐标表示垂轴色差大小，单位为微米；纵坐标表示实际像高，单位为毫米)、如图5所示的轴向色差曲线的示意图(其中，该图中横坐标表示轴向色差大小，单位为毫米；纵坐标表示为入瞳归一化半径，无单位)、如图6所示的像散曲线的示意图(其中，该图横坐标表示像散大小，单位为毫米；纵坐标表示视场数，无单位)和如图7所示的畸变曲线的示意图(其中，该图横坐标表示畸变大小，无单位，用百分数表示；纵坐标表示视场数，无单位)。
其中，垂轴色差曲线表示光线经由镜头后在成像面上的不同的像高的偏差；轴向色差曲线表示不同波长的光线经由镜头后的会聚焦点偏离；像散曲线表示子午面像面弯曲和弧矢像面弯曲；畸变曲线表示不同视场角所对应的畸变大小值。
实施例二
参见图1的光学镜头的结构，该光学镜头的折射率、阿贝数和焦距均以波长为555.00nm的光线为参考，其中，表3为光学镜头的镜头数据；表4为光学镜头的各非球面的高阶系数A4、A6、A8、A10、A12、A14、A16、A18和A20。
表3
Figure PCTCN2022110569-appb-000006
Figure PCTCN2022110569-appb-000007
表3中表示各标识符号所代表的含义参见表1部分的阐述，这里不再赘述。
需要说明的是，表格中S2所在行和Stop所在行之间的三行中的参数对应表示的是反射件的参数。
具体的，3.650表示反射件中的斜面中点到反射件中面向第一透镜1的一面的垂直距离；-3.650表示反射件中的斜面中点到反射件中面向第二透镜4的一面的垂直距离。0.803表示反射件中面向第二透镜4的一面与光阑STO之间的间隙距离。
表4
Figure PCTCN2022110569-appb-000008
Figure PCTCN2022110569-appb-000009
采用上述示例中的尺寸范围的光学镜头，对应如图8所示的垂轴色差曲线的示意图(其中，该图中横坐标表示垂轴色差大小，单位为微米；纵坐标表示实际像高，单位为毫米)、如图9所示的轴向色差曲线的示意图(其中，该图中横坐标表示轴向色差大小，单位为毫米；纵坐标表示为入瞳归一化半径，无单位)、如图10所示的像散曲线的示意图(其中，该图横坐标表示像散大小，单位为毫米；纵坐标表示视场数，无单位)和如图11所示的畸变曲线的示意图(其中，该图横坐标表示畸变大小，无单位，用百分数表示；纵坐标表示视场数，无单位)。
实施例三
参见图3的光学结构，该光学镜头的结构，该光学镜头的折射率、阿贝数和焦距均以波长为555.00nm的光线为参考，其中，表5为光学镜头的镜头数据；表6为光学镜头的各非球面的高阶系数A4、A6、A8、A10、A12、A14、A16、A18和A20。
表5
Figure PCTCN2022110569-appb-000010
Figure PCTCN2022110569-appb-000011
表5中表示各标识符号所代表的含义参见表1部分的阐述，这里不再赘述。
需要说明的是，表格中S2所在行和Stop所在行之间的三行中的参数对应表示的是反射件的参数。
具体的，3.700表示反射件中的斜面中点到反射件中面向第一透镜1的一面的垂直距离；-3.700表示反射件中的斜面中点到反射件中面向第二透镜4的一面的垂直距离。0.597表示反射件中面向第二透镜4的一面与光阑STO之间的间隙距离。
表6
Figure PCTCN2022110569-appb-000012
Figure PCTCN2022110569-appb-000013
采用上述示例中的尺寸范围的光学镜头，对应如图12所示的垂轴色差曲线的示意图(其中，该图中横坐标表示垂轴色差大小，单位为微米；纵坐标表示实际像高，单位为毫米)、如图13所示的轴向色差曲线的示意图(其中，该图中横坐标表示轴向色差大小，单位为毫米；纵坐标表示为入瞳归一化半径，无单位)、如图14所示的像散曲线的示意图(其中，该图横坐标表示像散大小，单位为毫米；纵坐标表示视场数，无单位)和如图15所示的畸变曲线的示意图(其中，该图横坐标表示畸变大小，无单位，用百分数表示；纵坐标表示视场数，无单位)。通过合理分配各透镜的光焦度、材料、面型、各透镜的中心厚度以及各透镜之间的轴上间距等，使得上述成像镜头具有长焦、大光圈、高成像质量和易于加工等至少一个有益效果。
需要说明的是，本申请实施例的光学镜头的等效焦距的取值范围为125mm～250mm。即相当于5倍焦段～10倍焦段。
本申请实施例的光学镜头，自物侧至像侧依序包括：第一透镜、反射件、光阑、第二透镜、第三透镜、第四透镜和第五透镜；其中，所述第一透镜具有正曲折力，所述第一透镜的朝向所述物侧的表面在靠近光轴处为凹面，所述第一透镜的朝向所述像侧的表面在靠近光轴处为凸面；所述第二透镜具有正曲折力，所述第二透镜的朝向所述物侧的表面在靠近光轴处为凸面；所述反射件用于反射所述第一透镜透出的入射光线，使其透射到所述第二透镜；所述第三透镜具有负曲折力，所述第三透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第三透镜的朝向所述像侧的表面在靠近光轴处为凹面；所述第四透镜具有曲折力，所述第四透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第四透镜朝向所述像侧的表面在靠近光轴处为凹面；所述第五透镜具有曲折力，如此，具有上述结构的光学镜头，能够在增加光学镜头的焦距的同时增加进光量，在应用到电子设备上时，能够满足暗光条件下的远 摄成像需求。
本申请实施例还提供一种光学模组，包括如上述实施例所述的光学镜头。
可选地，如图1～图3所示，本申请实施例的光学模组还包括：
感光元件9；
设于所述光学镜头的第五透镜7与所述感光元件9之间的滤光片10。
其中，滤光片10相对的两个表面分别表示为S11和S12。感光元件9的成像面表示为S13。
可选地，所述滤光片10为红外滤光片。
本申请实施例还提供了一种电子设备，包括如上述所述的光学模组。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (12)

  1. 一种光学镜头，自物侧至像侧依序包括：
    第一透镜、反射件、光阑、第二透镜、第三透镜、第四透镜和第五透镜；
    其中，所述第一透镜具有正曲折力，所述第一透镜的朝向所述物侧的表面在靠近光轴处为凹面，所述第一透镜的朝向所述像侧的表面在靠近光轴处为凸面；
    所述第二透镜具有正曲折力，所述第二透镜的朝向所述物侧的表面在靠近光轴处为凸面；
    所述反射件用于反射所述第一透镜透出的入射光线，使其透射到所述第二透镜；
    所述第三透镜具有负曲折力，所述第三透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第三透镜的朝向所述像侧的表面在靠近光轴处为凹面；
    所述第四透镜具有曲折力，所述第四透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第四透镜的朝向所述像侧的表面在靠近光轴处为凹面；
    所述第五透镜具有曲折力。
  2. 根据权利要求1所述的光学镜头，其中，所述光学镜头满足以下关系式：
    10°＜HFOV＜20°，HFOV表示所述光学镜头的水平视场角；
    1.8＜F/NO＜2.5，F/NO表示所述光学镜头的光圈数。
  3. 根据权利要求1所述的光学镜头，其中，所述第二透镜的朝向所述像侧的表面在靠近光轴处为凸面；所述第四透镜的曲折力为负曲折力；
    所述第五透镜的曲折力为正曲折力，所述第五透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第五透镜的朝向所述像侧的表面在靠近光轴处为凹面。
  4. 根据权利要求1所述的光学镜头，其中，所述第二透镜的朝向所述像侧的表面在靠近光轴处为凹面，所述第四透镜的曲折力为正曲折力；
    所述第五透镜的曲折力为负曲折力，所述第五透镜的朝向所述物侧的表面在靠近光轴处为凸面，所述第五透镜的朝向所述像侧的表面在靠近光轴处为凸面。
  5. 根据权利要求1所述的光学镜头，其中，所述反射件的反射面与对应所述第一透镜的光轴之间的夹角为45度。
  6. 根据权利要求1所述的光学镜头，其中，所述第一透镜的焦距满足下述关系式：
    0＜EFL1＜50mm，EFL1表示所述第一透镜的焦距。
  7. 根据权利要求1所述的光学镜头，其中，所述光学镜头满足下述关系式：
    DL/EFL≤0.55，DL表示沿光轴方向，第二透镜的朝向所述物侧的表面到所述第五透镜的朝向所述像侧的表面之间的长度，EFL表示所述光学镜头的有效焦距。
  8. 根据权利要求1所述的光学镜头，其中，所述第一透镜、所述第二透镜、所述第三透镜、所述第四透镜、所述第五透镜均为非球面透镜。
  9. 一种光学模组，包括：如权利要求1至8任一项所述的光学镜头。
  10. 根据权利要求9所述的光学模组，其中，还包括：
    感光元件；
    设于所述光学镜头的第五透镜与所述感光元件之间的滤光片。
  11. 根据权利要求10所述的光学模组，其中，所述滤光片为红外滤光片。
  12. 一种电子设备，包括如权利要求9至11任一项所述的光学模组。
PCT/CN2022/110569 2021-08-12 2022-08-05 光学镜头、光学模组及电子设备 Ceased WO2023016373A1 (zh)

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