WO2020220837A1 - 一种非共轴的投影光源系统 - Google Patents

一种非共轴的投影光源系统 Download PDF

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Publication number
WO2020220837A1
WO2020220837A1 PCT/CN2020/078544 CN2020078544W WO2020220837A1 WO 2020220837 A1 WO2020220837 A1 WO 2020220837A1 CN 2020078544 W CN2020078544 W CN 2020078544W WO 2020220837 A1 WO2020220837 A1 WO 2020220837A1
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light source
light
lens group
fluorescent wheel
convergent
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English (en)
French (fr)
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钟波
肖适
尹蕾
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Chengdu XGIMI Technology Co Ltd
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Chengdu XGIMI Technology Co Ltd
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Priority to EP20799048.2A priority Critical patent/EP3964876B1/en
Priority to US17/599,579 priority patent/US11822222B2/en
Priority to JP2021557993A priority patent/JP7162756B2/ja
Publication of WO2020220837A1 publication Critical patent/WO2020220837A1/zh
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
    • G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2066—Reflectors in illumination beam
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection

Definitions

  • the invention relates to the technical field of illumination light sources, in particular to a non-coaxial projection light source system.
  • the light sources of the projection system are mainly divided into three categories, namely bulb light sources, LED light sources and laser light sources.
  • the laser light source is the most concerned projection light source in recent years.
  • the laser light source has the characteristics of large wavelength selectivity and high spectral brightness. It can synthesize the color gamut coverage rate of more than 90% of the natural colors seen by the human eye to achieve perfect color reproduction.
  • the laser light source has super high brightness and long service life, which greatly reduces the maintenance cost in the later period.
  • the currently used projection light source system uses excitation light to irradiate the fluorescent wheel to generate radiant fluorescence.
  • the optical paths of radiant fluorescence and excitation light overlap, and components such as dichroic mirrors are required to separate the optical paths of radiated fluorescence and excitation light.
  • the radiant fluorescent output synthesizes white light, so that the light path of the projection light source system is complicated, the parts are many, the volume is large, and the production cost is high.
  • the technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology, provide a non-coaxial projection light source system, and solve the problem that the projection light source system in the current technology uses dichroic mirrors and other components to radiate fluorescent light. Separate from the optical path of the excitation light, the optical path is complicated, the parts are many, the system is bulky, and the cost is high.
  • the technical solution of the present invention is:
  • a non-coaxial projection light source system comprising a light source, a fluorescent wheel, and a converging plastic lens group located between the two.
  • the excitation light emitted by the light source is directed toward the converging plastic lens in a direction oblique to the optical axis of the converging plastic lens group.
  • the radiant fluorescence generated by the excitation on the fluorescent wheel is directed to the convergent shaping lens group and then is condensed to a light path direction different from the excitation light for output.
  • the non-coaxial projection light source system of the present invention directly uses the convergent shaping lens group to separate the light path of the excitation light and the radiated fluorescence without using dichroic mirrors, effectively reducing system components and reducing system occupation volume. Reduce system costs.
  • the radiant fluorescence generated by the excitation on the fluorescent wheel is a Lambertian light source, which is distributed in a 180 degree direction. The radiant fluorescence is emitted to the convergent plastic lens group through which the incident excitation light passes, and the radiant fluorescence is emitted after being converged by the convergent plastic lens group.
  • the direction and the excitation light inclined to the optical axis of the convergent plastic lens group are not in the same direction, which realizes the separation of the optical path, and can directly combine the light output of the radiation fluorescence emitted from the convergent plastic lens group.
  • the structure of the system is more compact, the optical path components of the system are less, the loss of the light transmission process is reduced, and the light source output brightness is improved.
  • the convergent plastic lens group has a through hole for the excitation light to directly pass through, and the directivity of the excitation light is better. It is collimated parallel light, which prevents the excitation light from passing through the convergent plastic lens group and reduces excitation. The loss of light increases the power of the excitation light irradiated on the fluorescent wheel and increases the power of the radiant fluorescence generated by the excitation.
  • the radiant fluorescence generated by the excitation on the fluorescent wheel is converged from the convergent plastic lens group to the optical axis direction of the convergent plastic lens group, and the radiant fluorescence emitted along the optical axis has a good converging and shaping effect, and it is easier to control the emitted radiation
  • the directivity of fluorescence improves the quality of the final light source output.
  • the excitation light emitted by the light source is irradiated on the fluorescent wheel in a direction oblique to the axis of rotation of the fluorescent wheel after being transmitted through the convergent plastic lens group, so as to ensure that the light path of the radiated fluorescent light is more fully integrated with the light path of the excitation light. separate.
  • the Abbe number of at least one lens in the convergent plastic lens group is less than or equal to 30, and the convergent plastic lens group has a better dispersion effect, and can make the light of different wavelengths pass through the convergent plastic lens group at the angle of separation of light paths. Larger in order to better separate the laser and fluorescent light paths.
  • the fluorescent wheel is provided with a number of phosphor areas along the circumferential direction for exciting and generating radiant fluorescence of different colors, and the fluorescent wheel is also provided with excitation light distributed on the same circumference as the phosphor area. Transmission area or excitation light reflection area. The different radiant fluorescence generated by the excitation is mixed with the excitation light transmitted from the excitation light transmission area or the excitation light emitted from the excitation light reflection area to increase the luminous flux of the output light, make the projection display color better, and the color gamut , The image reproduces bright colors.
  • the excitation light transmission area is white glass or a diffuser set on the fluorescent wheel to eliminate speckle.
  • the excitation light reflection zone diffusely reflects the excitation light, and after being reflected, the excitation light is also a Lambertian light source similar to radiant fluorescence.
  • the reflected excitation light is output after being converged by the converging plastic lens group, which can effectively Eliminate speckle and improve projection effect.
  • the excitation light reflection area is a reflection lens parallel to the fluorescence wheel arranged on the back side of the fluorescence wheel.
  • a light combining assembly which includes a light combining reflector, a beam shaping module, a color filter wheel and a light rod that rotate synchronously with the fluorescent wheel, and the radiation that is collected from the converging and shaping lens group. After the fluorescence is directed to the light combining mirror, the light is combined and output through the beam shaping module, color filter wheel and light rod in turn.
  • the light combining component has a compact structure and a small footprint.
  • the filter color wheel filters the light and outputs to make the colors more vivid.
  • the light rod homogenizes the output beam to improve the uniformity of the output light.
  • the present invention has the following advantages:
  • the non-coaxial projection light source system of the present invention has a simple and compact structure, eliminating the need to use dichroic mirrors for beam splitting, effectively reducing system components, reducing system costs, reducing system footprint, and making the system structure more compact , Reduce the loss of the light transmission process and improve the output brightness of the light source.
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of a non-coaxial projection light source system
  • FIG. 2 is a schematic diagram of the fluorescent wheel structure of the first embodiment of the non-coaxial projection light source system
  • Embodiment 3 is a schematic structural diagram of Embodiment 2 of a non-coaxial projection light source system
  • FIG. 4 is a schematic diagram of the structure of the fluorescent wheel in the second embodiment of the non-coaxial projection light source system
  • FIG. 5 is a schematic structural diagram of the second mode of the second embodiment of the non-coaxial projection light source system
  • FIG. 6 is a schematic diagram of the structure of the convergent plastic lens group in the third embodiment of the non-coaxial projection light source system.
  • the non-coaxial projection light source system disclosed in the embodiment of the present invention eliminates the use of a dichroic mirror, has a simpler and more compact optical path structure, effectively reduces the volume of the system and reduces the production cost.
  • a non-coaxial projection light source system which is mainly composed of a light source 1, a fluorescent wheel 2 and a converging plastic lens group 3 located between the two.
  • the excitation light emitted by the light source 1 is inclined to the converging plastic lens group 3
  • the direction of the optical axis is directed to the convergent shaping lens group 3 and then onto the fluorescent wheel 2.
  • the radiant fluorescence generated by the excitation on the fluorescent wheel 2 is directed to the convergent shaping lens group 3 and then converged to an optical path direction different from the excitation light for output.
  • the radiant fluorescence excited on the fluorescent wheel is a Lambertian light source, which is distributed in the 180 degree direction.
  • the radiant fluorescence emitted in a large area is concentrated by the convergent plastic lens group.
  • the emission direction of the radiant fluorescence is roughly along the convergent plastic lens group.
  • the optical axis can separate the optical path of the radiated fluorescence emitted from the convergent plastic lens group from the optical path of the excitation light, so that the optical path of the radiated fluorescence and the excitation light can be separated without the use of a dichroic mirror, reducing the number of components of the system, Reduce the size.
  • the convergent plastic lens group 3 prefers lenses with a smaller dispersion coefficient Vd, so that the convergent plastic lens group 3 can achieve a better dispersion effect.
  • the light of different colors is deflected at different angles during transmission, so that the emission light path of the radiated fluorescence can be better It is separated from the light path of the excitation light, so that the exit light path of the radiated fluorescence and the light path of the excitation light are separated by a larger angle.
  • the light of each color can be homogenized by a diffuser and a light rod, and then combined into the same coaxial axis Light path.
  • the non-coaxial projection light source system mainly includes a light source 1, a fluorescent wheel 2, a convergent plastic lens group 3, and a light combining component;
  • the light source 1 adopts a blue laser source, which is collimated and parallel light with good directivity. It is easy to converge and reshape in the optical path, and the control is relatively easy.
  • the convergent plastic lens group 3 is preferably an aspheric lens, which makes more effective use of the radiation fluorescence and excitation light.
  • the light source 1 emits the excitation light of the blue laser, and the excitation light is transmitted to the fluorescent wheel 2 after the converging and shaping action of the convergent plastic lens group 3.
  • the fluorescent wheel 2 is provided with a number of radiant fluorescence for exciting and producing different colors along the circumferential direction.
  • the fluorescent powder area 21, and the fluorescent wheel 2 is also provided with an excitation light transmission area 22 distributed on the same circumference as the fluorescent powder area 21.
  • the radiant fluorescence generated by the fluorescent powder area 21 includes red, green, and possibly yellow, The brightness can be increased, and the excitation light transmission area 22 can be provided with white glass or a diffuser on the fluorescent wheel 2 to eliminate speckle;
  • the fluorescent wheel 2 continues to rotate, and the excitation light irradiated on the fluorescent wheel 2 is successively and cyclically irradiated to the phosphor area 21 and the excitation light transmission area 22 that produce different colors of radiation fluorescence.
  • the excitation light irradiates the phosphor area 21, it is excited to generate radiation Fluorescence, radiant fluorescence diverges in all directions, and the part of the radiant fluorescence directed to the convergent plastic lens group 3 is converged and shaped by the convergent plastic lens group 3 and then emitted in one direction.
  • the optical axis direction of 3 is directed to the convergent shaping lens group 3 and then onto the fluorescent wheel 2, so that the direction of the emitted light path of the radiant fluorescence convergent shaping is not in the same direction as that of the incident excitation light, and the light path is staggered, so there is no need to set two
  • the dichroic mirror makes the system structure more compact.
  • the radiant fluorescence generated by the excitation on the fluorescent wheel 2 is converged from the convergent plastic lens group 3 to the optical axis direction of the convergent plastic lens group 3; the excitation light irradiates the excitation light transmission area At 22 o'clock, the excitation light is emitted from the excitation light transmission area 22 through the fluorescent wheel 2 to the back side of the fluorescent wheel 2.
  • a light path turning assembly is provided on the back side of the fluorescent wheel 2.
  • the light path turning assembly includes a mirror, a focusing lens and other components , The light path of the excitation light passing through the fluorescent wheel 2 is folded, so that this part of the excitation light and the radiated fluorescence lead to the light combining component for combined light output;
  • the light combining assembly includes a light combining reflector 41, a beam shaping module 42, a color filter wheel 43 that rotates synchronously with the fluorescent wheel, and a light rod 44, which are arranged in sequence, and the radiated fluorescent light converged from the converging and shaping lens group 3.
  • the excitation light that is directed to the light combining mirror 41 and passes through the fluorescent wheel 2 from the excitation light transmission area 22 is also directed to the light combining mirror 41 under the action of the light path reflex component, and then the radiated fluorescence and the excitation light pass through the light beam in turn
  • the shaping module 42, the color filter wheel 43 and the light rod 44 perform combined light output.
  • the beam shaping module 42 focuses and shapes the radiant fluorescence and excitation light, and then the filter color wheel 43 filters the radiant fluorescence and excitation light of various colors , And finally the light rod homogenizes the output beam.
  • the Abbe number of at least one lens in the convergent plastic lens group is less than or equal to 30, so as to better separate the optical paths of laser and fluorescence. Because the dominant wavelengths of the three primary colors of the current system are relatively dispersed, the wavelength ranges of the three colors are separated by about 50nm. For example, the dominant wavelength of blue light is concentrated at 450 ⁇ 460nm, the dominant wavelength of green light is concentrated at 510 ⁇ 570nm, and the dominant wavelength of red light is concentrated at 620 ⁇ 680nm. Therefore, the use of a convergent plastic lens group with a good dispersion effect can better separate the three-color light, that is, the optical path of the laser and the fluorescence can be better separated.
  • the difference from the first embodiment is that the phosphor wheel 2 is provided with an excitation light reflection area 23 distributed on the same circumference as the phosphor area 21, and the excitation light reflection area 23 replaces the excitation light transmission area 22 ,
  • the excitation light reflection area 23 diffusely reflects the excitation light.
  • the excitation light reflection area 23 may be located on the same side of the phosphor wheel substrate as the phosphor area 21, and the excitation light reflection area may be formed by coating or other methods.
  • the excitation light reflection area 23 can also be a reflective lens arranged on the back side of the fluorescent wheel parallel to the fluorescent wheel, the back side of the fluorescent wheel is the side of the fluorescent wheel without the phosphor area, the excitation light After being reflected, it is also a Lambertian light source. The reflected excitation light is directed to the convergent plastic lens group 3 for convergent shaping and output.
  • the lens group 3 makes the reflected excitation light converge in another direction after passing through the converging and shaping lens group 3, which is the same as the direction of the radiation fluorescence converging and exiting, and the converging and exiting optical path direction of the reflected excitation light is the same as that of the incident excitation light.
  • the directions are not in the same direction, and the light path is separated without setting a dichroic mirror.
  • the reflected excitation light and radiated fluorescence are both directed to the light combining mirror 41 of the light combining component after passing through the convergent shaping lens group 3, and then sequentially
  • the combined light output is performed through the beam shaping module 42, the color filter wheel 43 and the light rod 44.
  • a through hole 31 through which the excitation light emitted to the fluorescent wheel can directly pass through can also be opened in the convergent plastic lens group 3, that is, incident on the fluorescent wheel 2
  • the excitation light does not need to go through the convergent shaping action of the convergent plastic lens group 3 to directly illuminate the fluorescent wheel 2, because the blue laser source used in the light source 1 is collimated and parallel light, which has good directivity, which can ensure that the fluorescent powder area is irradiated
  • the excitation efficiency can make the optical path of the excitation light incident on the fluorescent wheel 2 and the optical path of the radiant fluorescence converged by the convergent plastic lens group 3 better separate.
  • the lenses of the convergent plastic lens group 3 can adopt aspherical lenses. Or spherical lenses.
  • the excitation light emitted by the light source 1 is irradiated on the fluorescent wheel 2 in a direction oblique to the axis of rotation of the fluorescent wheel 2 after passing through the convergent plastic lens group 3, so that the radiated fluorescence can pass through
  • the convergent outgoing optical path direction is better separated from the light path direction of the incident excitation light
  • the optical axis of the convergent plastic lens group 3 can be along the rotation axis of the fluorescent wheel 2, or the convergent plastic lens group 3
  • the optical axis of is inclined to the axis of rotation of the fluorescent wheel 2, which can better separate the direction of the focused and emitted light path of the radiated fluorescent light from the direction of the light path of the incident excitation light.

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  • General Physics & Mathematics (AREA)
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Abstract

一种非共轴的投影光源系统，包括光源（1）、荧光轮（2）和位于两者之间的汇聚整形镜片组（3），光源（1）发出的激发光以倾斜于汇聚整形镜片组（3）的光轴方向射向汇聚整形镜片组（3）后射到荧光轮（2）上，荧光轮（2）上激发产生的辐射荧光射向汇聚整形镜片组（3）后汇聚至与激发光不同的光路方向上输出。非共轴的投影光源系统，结构简单紧凑，省去使用进行分光的二向色镜，有效的减少系统组成部件，降低系统成本，减小系统占用体积，使得系统结构更加紧凑，减小光输送过程的损耗，提高光源输出亮度。

Description

一种非共轴的投影光源系统 技术领域
本发明涉及照明光源技术领域，尤其涉及一种非共轴的投影光源系统。
背景技术
投影系统的光源主要分为三类，分别是灯泡光源、LED光源以及激光光源。激光光源是近年最受关注的投影光源，激光光源具有波长可选择性大和光谱亮度高等特点，可以合成人眼所见自然界颜色90％以上的色域覆盖率，实现完美的色彩还原。同时，激光光源就有超高的亮度和较长的使用寿命，大大降低了后期的维护成本。
目前所采用的投影光源系统，利用激发光照射荧光轮产生辐射荧光，通常辐射荧光与激发光的光路是重合的，需要采用二向色镜等部件来将辐射荧光与激发光的光路分开才能将辐射荧光输出合成白光，从而投影光源系统的光路复杂、部件多，占用体积大，制作成本高。
发明内容
本发明所要解决的技术问题和提出的技术任务是对现有技术进行改进，提供一种非共轴的投影光源系统，解决目前技术中的投影光源系统采用二向色镜等部件来将辐射荧光与激发光的光路分开，光路复杂、部件多，系统体积大、成本高的问题。
为解决以上技术问题，本发明的技术方案是：
一种非共轴的投影光源系统，包括光源、荧光轮和位于两者之间的汇聚整形镜片组，所述光源发出的激发光以倾斜于汇聚整形镜片组的光轴方向射向汇聚整形镜片组后射到荧光轮上，荧光轮上激发产生的辐射荧光射向汇聚整形镜片组后汇聚至与激发光不同的光路方向上输出。本发明所述的非共轴的投影光源系统直接利用汇聚整形镜片组来将激发光与辐射荧光的光路分开，无需再使用二向色镜，有效的减少系统组成部件，减小系统占用体积，降低系统成本。荧光轮上激发产生的辐射荧光为朗伯体光源，在180度方向都有分布，辐射荧光射向入射的激发光所经过的汇聚整形镜片组，辐射荧光在经过汇聚整形镜片组汇聚后的出射方向与倾斜于汇聚整形镜片组光轴的激发光不在同一个方向上，实现了光路的分开，可以直接将从汇聚整形镜片组出射的辐射荧光合光输出，无需再增加实现分光的部件，使得系统结构更加紧凑，系统光路部件少，减小光输送过程的损耗，提高光源输出亮度。
进一步的，所述的汇聚整形镜片组开设出供激发光直接穿过的通孔，激发光的方向性较好，为准直平行光，避免激发光经过汇聚整形镜片组透射而出，减少激发光的损耗，提高照射在荧光轮上的激发光的功率，提高激发产生的辐射荧光的功率。
进一步的，所述荧光轮上激发产生的辐射荧光由汇聚整形镜片组汇聚至汇聚整形镜片组的光轴方向，沿着光轴方向出射的辐射荧光的汇聚整形效果好，更容易控制出射的辐射荧光的方向性，提高最终光源输出的质量。
进一步的，所述的光源发出的激发光在透射过汇聚整形镜片组后以倾斜于荧光轮旋转轴向的方向照射到荧光轮上，确保辐射荧光汇聚后的光路能更充分与激发光的光路分开。
进一步的，所述的汇聚整形镜片组中至少一个镜片的阿贝数≤30，汇聚整形镜片组具有更好的色散效果，能使不同波长的光在透过汇聚整形镜片组时光路分开的角度更大，以便更好地将激光和荧光的光路分开。
进一步的，所述的荧光轮上沿着圆周方向设置了若干用于激发产生不同颜色的辐射荧光的荧光粉区，并且所述的荧光轮上还设置了与荧光粉区同圆周分布的激发光透射区或激发光反射区。激发产生的不同辐射荧光与由激发光透射区透射出的激发光或者是由激发光反射区发射出的激发光进行混光输出，提高输出光的光通量，使投影显示颜色更好，色域大，图像再现颜色鲜艳。
进一步的，所述的激发光透射区为在荧光轮上设置的白玻璃或扩散片，消除散斑。
进一步的，所述的激发光反射区对激发光进行漫反射，激发光在被反射后也呈与辐射荧光类似的朗伯体光源，反射的激发光被汇聚整形镜片组汇聚后输出，能有效消除散斑，提高投影效果。
进一步的，所述的激发光反射区为在荧光轮的背侧设置的平行于荧光轮的反射镜片。
进一步的，还包括合光组件，所述的合光组件包括依次设置的合光反射镜、光束整形模组、与荧光轮同步旋转的滤色色轮和光棒，从汇聚整形镜片组汇聚出的辐射荧光射向合光反射镜后依次再通过光束整形模组、滤色色轮和光棒进行合光输出，合光组件结构紧凑，占用体积小，滤色色轮将光过滤后输出能使得颜色更加鲜艳，光棒对输出光束进行匀光，提高输出光的均匀性。
与现有技术相比，本发明优点在于：
本发明所述的非共轴的投影光源系统，结构简单紧凑，省去使用进行分光的二向色镜，有效的减少系统组成部件，降低系统成本，减小系统占用体积，使得系统结构更加紧凑，减小光输送过程的损耗，提高光源输出亮度。
附图说明
图1为非共轴的投影光源系统实施例一的结构示意图；
图2为非共轴的投影光源系统实施例一的荧光轮结构示意图；
图3为非共轴的投影光源系统实施例二的结构示意图；
图4为非共轴的投影光源系统实施例二的荧光轮结构示意图；
图5为非共轴的投影光源系统实施例二的第二种方式结构示意图；
图6为非共轴的投影光源系统实施例三的汇聚整形镜片组结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、 完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例公开的一种非共轴的投影光源系统，取消使用二向色镜，光路结构更加简单、紧凑，有效减小系统体积，降低制作成本。
一种非共轴的投影光源系统，主要由光源1、荧光轮2和位于两者之间的汇聚整形镜片组3的构成，所述光源1发出的激发光以倾斜于汇聚整形镜片组3的光轴方向射向汇聚整形镜片组3后射到荧光轮2上，荧光轮2上激发产生的辐射荧光射向汇聚整形镜片组3后汇聚至与激发光不同的光路方向上输出。荧光轮上激发产生的辐射荧光为朗伯体光源，在180度方向都有分布，大范围发射出的辐射荧光在经过汇聚整形镜片组汇聚后辐射荧光的出射方向大致沿着汇聚整形镜片组的光轴，从而能使从汇聚整形镜片组出射的辐射荧光的光路与激发光的光路分开，从而无需使用二向色镜就实现了将辐射荧光与激发光的光路分开，减少系统的部件数量，缩小体积。
汇聚整形镜片组3优选色散系数Vd较小的镜片，从而汇聚整形镜片组3能实现更好的色散效果，不同颜色的光在透射时偏转的角度不同，使得辐射荧光的出射光路能更好与激发光的光路分开，使得辐射荧光的出射光路与激发光的光路两者分开的角度更大，在后端可通过扩散片和光棒等将各色光进行匀光，再合并为同一共 轴光路。
实施例一
如图1和图2所示，非共轴的投影光源系统主要包括光源1、荧光轮2、汇聚整形镜片组3和合光组件；
光源1采用蓝色激光源，为准直平行光，方向性好，在光路中容易进行汇聚整形，控制相对较为容易，汇聚整形镜片组3优选非球面镜片，更有效利用辐射荧光与激发光的光路分开；
光源1发出蓝色激光的激发光，激发光经过汇聚整形镜片组3的汇聚整形作用后透射到荧光轮2上，荧光轮2上沿着圆周方向设置了若干用于激发产生不同颜色的辐射荧光的荧光粉区21，并且所述的荧光轮2上还设置了与荧光粉区21同圆周分布的激发光透射区22，荧光粉区21产生的辐射荧光包括红色、绿色，还可以有黄色，能增加亮度，激发光透射区22可以在荧光轮2上设置的白玻璃或扩散片，消除散斑；
荧光轮2持续旋转，照射在荧光轮2上的激发光依次并循环的照射到产生不同颜色辐射荧光的荧光粉区21和激发光透射区22，激发光照射到荧光粉区21时激发产生辐射荧光，辐射荧光向各个方向发散，辐射荧光射向汇聚整形镜片组3的部分则由汇聚整形镜片组3汇聚整形后沿着一个方向射出，由于从光源射出的激发光以倾斜于汇聚整形镜片组3的光轴方向射向汇聚整形镜片组3后射到荧光轮2上，使 得辐射荧光汇聚整形的射出光路方向与入射的激发光的光路方向不在同一个方向上，光路实现错开，无需设置二向色镜，使系统结构更紧凑，优选的，所述荧光轮2上激发产生的辐射荧光由汇聚整形镜片组3汇聚至汇聚整形镜片组3的光轴方向；激发光照射到激发光透射区22时，激发光从激发光透射区22穿过荧光轮2向荧光轮2的后侧射出，在荧光轮2的后侧设置光路折转组件，光路折转组件包括反光镜、聚焦透镜等部件，将穿过荧光轮2的激发光的光路进行折转，使得这部分的激发光与辐射荧光通向合光组件进行合光输出；
在本实施例中，合光组件包括依次设置的合光反射镜41、光束整形模组42、与荧光轮同步旋转的滤色色轮43和光棒44，从汇聚整形镜片组3汇聚出的辐射荧光射向合光反射镜41，并且从激发光透射区22穿过荧光轮2的激发光也在光路折转组件的作用下射向合光反射镜41，然后辐射荧光和激发光依次再通过光束整形模组42、滤色色轮43和光棒44进行合光输出，光束整形模组42对辐射荧光和激发光进行聚焦整形，然后滤色色轮43再对各种颜色的辐射荧光和激发光进行过滤，最后光棒对输出光束进行匀光。
在本实施例中，所述汇聚整形镜片组中至少一个镜片的阿贝数≤30，以便更好地将激光和荧光的光路分开。因目前系统三基色主波长较为分散，三种颜色的波长范围间隔约50nm，如蓝光主波长集中在450～460nm，绿光主波长集中在510～570nm，红光主波长集中在620～680nm，因此采用色散效果好的汇聚整形镜片组可更好地分 开三色光，即可以更好的分开激光和荧光的光路。
实施例二
如图3和图4所示，与实施例一的不同点在于，荧光轮2上设置了与荧光粉区21同圆周分布的激发光反射区23，激发光反射区23取代激发光透射区22，激发光反射区23对激发光进行漫反射，如图4所示，激发光反射区23可以是与荧光粉区21位于荧光轮基体的同一侧，可以是通过镀膜等方式形成激发光反射区23；如图5所示，激发光反射区23还可以是在荧光轮的背侧设置的平行于荧光轮的反射镜片，荧光轮的背侧即荧光轮没有荧光粉区的一侧，激发光在被反射后也呈朗伯体光源，反射的激发光射向汇聚整形镜片组3汇聚整形后输出，由于从光源射出的激发光以倾斜于汇聚整形镜片组3的光轴方向射向汇聚整形镜片组3，使得反射的激发光在经过汇聚整形镜片组3后汇聚在另一个方向，与辐射荧光汇聚出射的方向相同，并且反射的激发光的汇聚出射光路方向与入射的激发光的光路方向不在同一个方向上，无需设置二向色镜即实现了光路的分开，反射的激发光和辐射荧光在经过汇聚整形镜片组3后都射向合光组件的合光反射镜41，然后依次通过光束整形模组42、滤色色轮43和光棒44进行合光输出。
实施例三
如图6所示，在实施例一和实施例二的基础上，还可在汇聚整形镜片组3上开设出供射向荧光轮的激发光直接穿过的通孔31，即入射向荧光轮2激发光不用经过 汇聚整形镜片组3的汇聚整形作用直接照射荧光轮2，因为光源1采用的蓝色激光源为准直平行光，方向性好，可保证照射荧光粉区时产生辐射荧光的激发效率，能使得入射向荧光轮2激发光的光路与由汇聚整形镜片组3汇聚出的辐射荧光的光路更好的分开，此种方案中，汇聚整形镜片组3的镜片可采用非球面镜片或球面镜片。
实施例四
在实施例一和实施例二的基础上，光源1发出的激发光在透射过汇聚整形镜片组3后以倾斜于荧光轮2旋转轴向的方向照射到荧光轮2上，能使得辐射荧光经过汇聚整形镜片组3后的汇聚出射光路方向更好的入射的激发光的光路方向分开；汇聚整形镜片组3的光轴可以沿着荧光轮2的旋转轴向，或着汇聚整形镜片组3的光轴倾斜于荧光轮2的旋转轴向，能更好的将辐射荧光的汇聚出射光路方向与入射的激发光的光路方向分开。
以上仅是本发明的优选实施方式，应当指出的是，上述优选实施方式不应视为对本发明的限制，本发明的保护范围应当以权利要求所限定的范围为准。对于本技术领域的普通技术人员来说，在不脱离本发明的精神和范围内，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种非共轴的投影光源系统，其特征在于，包括光源、荧光轮和位于两者之间的汇聚整形镜片组，所述光源发出的激发光以倾斜于汇聚整形镜片组的光轴方向射向汇聚整形镜片组后射到荧光轮上，荧光轮上激发产生的辐射荧光射向汇聚整形镜片组后汇聚至与激发光不同的光路方向上输出。
  2. 根据权利要求1所述的非共轴的投影光源系统，其特征在于，所述的汇聚整形镜片组开设出供激发光直接穿过的通孔。
  3. 根据权利要求1所述的非共轴的投影光源系统，其特征在于，所述荧光轮上激发产生的辐射荧光由汇聚整形镜片组汇聚至汇聚整形镜片组的光轴方向。
  4. 根据权利要求1所述的非共轴的投影光源系统，其特征在于，所述的光源发出的激发光在透射过汇聚整形镜片组后以倾斜于荧光轮旋转轴向的方向照射到荧光轮上。
  5. 根据权利要求1所述的非共轴的投影光源系统，其特征在于，所述的汇聚整形镜片组中至少一个镜片的阿贝数≤30。
  6. 根据权利要求1至5任一项所述的非共轴的投影光源系统，其特征在于，所述的荧光轮上沿着圆周方向设置了若干用于激发产生不同颜色的辐射荧光的荧光粉区，并且所述的荧光轮上还设置了与荧光粉区同圆周分布的激发光透射区或激发光反射区。
  7. 根据权利要求6所述的非共轴的投影光源系统，其特征在于，所述的激发光 透射区为在荧光轮上设置的白玻璃或扩散片。
  8. 根据权利要求6所述的非共轴的投影光源系统，其特征在于，所述的激发光反射区对激发光进行漫反射。
  9. 根据权利要求6所述的非共轴的投影光源系统，其特征在于，所述的激发光反射区为在荧光轮的背侧设置的平行于荧光轮的反射镜片。
  10. 根据权利要求1至5任一项所述的非共轴的投影光源系统，其特征在于，还包括合光组件，所述的合光组件包括依次设置的合光反射镜、光束整形模组、与荧光轮同步旋转的滤色色轮和光棒，从汇聚整形镜片组汇聚出的辐射荧光射向合光反射镜后依次再通过光束整形模组、滤色色轮和光棒进行合光输出。
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CN110716380B (zh) * 2019-11-25 2021-05-18 成都极米科技股份有限公司 一种光源系统及投影机
CN113009753A (zh) * 2019-12-20 2021-06-22 青岛海信激光显示股份有限公司 一种激光光源及激光投影设备
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100309439A1 (en) * 2007-11-30 2010-12-09 Phoebus Vision Opto-Elec Tech Co., Ltd. Light source for projection system and projection display apparatus
CN105388691A (zh) * 2015-12-30 2016-03-09 海信集团有限公司 一种激光光源装置和激光投影设备
CN108646510A (zh) * 2018-06-25 2018-10-12 成都九天光学技术有限公司 一种紧凑型投影光源
CN108803215A (zh) * 2017-04-28 2018-11-13 中航国画（上海）激光显示科技有限公司 一种新型荧光轮激光投影机
CN109960099A (zh) * 2019-04-30 2019-07-02 成都市极米科技有限公司 一种非共轴的投影光源系统
CN209674172U (zh) * 2019-04-30 2019-11-22 成都极米科技股份有限公司 一种非共轴的投影光源系统

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3727543B2 (ja) * 2000-05-10 2005-12-14 三菱電機株式会社 画像表示装置
JP4340468B2 (ja) * 2003-05-02 2009-10-07 リコー光学株式会社 投射用レンズおよび投射型画像表示装置
CN100370304C (zh) * 2003-09-30 2008-02-20 松下电器产业株式会社 投影镜头及使用该投影镜头的投影式显示装置及背面投影式显示装置
JP2006139198A (ja) * 2004-11-15 2006-06-01 Nec Viewtechnology Ltd 投射レンズ系および投射型表示装置
KR101826745B1 (ko) * 2010-12-14 2018-02-07 삼성전자주식회사 가변초점 렌즈 구조체 및 그 제조방법과, 광학렌즈 모듈 및 그 제조방법
JP2013076904A (ja) * 2011-09-30 2013-04-25 Jvc Kenwood Corp 表示装置
CN202421054U (zh) * 2011-12-29 2012-09-05 北京国科华仪科技有限公司 用于吸收光检测和荧光检测的光学检测系统
CN103713454B (zh) * 2012-09-28 2016-12-07 深圳市绎立锐光科技开发有限公司 发光装置及相关投影系统
JP2014073526A (ja) * 2012-10-05 2014-04-24 Mitsubishi Heavy Ind Ltd 光学系及びレーザ加工装置
JP6292523B2 (ja) * 2013-01-10 2018-03-14 Ｚｅｒｏ Ｌａｂ株式会社 波長変換デバイス、照明光学系およびこれを用いた電子装置
WO2015104801A1 (ja) * 2014-01-08 2015-07-16 Ｎｅｃディスプレイソリューションズ株式会社 光源装置および投写型表示装置
JPWO2017154371A1 (ja) * 2016-03-07 2018-12-27 ソニー株式会社 光源装置および電子機器
CN107272311B (zh) * 2016-04-06 2024-06-18 上海蓝湖照明科技有限公司 发光装置及相关投影系统与照明系统
WO2017195857A1 (ja) * 2016-05-13 2017-11-16 パナソニックＩｐマネジメント株式会社 結像光学系及び画像投写装置
CN109976078B (zh) * 2016-08-04 2022-01-11 深圳光峰科技股份有限公司 发光装置及投影系统
CN106066542B (zh) * 2016-08-16 2019-05-17 中国人民解放军总参谋部第六十研究所 复合光焦度激光准直系统
JP6939805B2 (ja) * 2016-10-19 2021-09-22 ソニーグループ株式会社 光源装置および投射型表示装置
CN108073025B (zh) * 2016-11-18 2020-09-04 中强光电股份有限公司 投影装置以及照明系统
JP2017182071A (ja) * 2017-04-25 2017-10-05 カシオ計算機株式会社 投影装置、投影方法及びプログラム
CN109557752B (zh) * 2017-09-26 2021-03-02 深圳光峰科技股份有限公司 光源系统及投影装置
CN207457687U (zh) * 2017-09-26 2018-06-05 深圳市光峰光电技术有限公司 光源系统及投影设备
JP6731163B2 (ja) * 2017-10-03 2020-07-29 カシオ計算機株式会社 光源装置及び投影装置
US11067880B2 (en) * 2017-10-03 2021-07-20 Casio Computer Co., Ltd Light source unit and projector
CN208297848U (zh) * 2018-06-25 2018-12-28 李雅瑄 一种环状聚焦光束系统
CN116430662B (zh) * 2023-06-13 2023-08-15 宜宾市极米光电有限公司 一种光源系统及投影设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100309439A1 (en) * 2007-11-30 2010-12-09 Phoebus Vision Opto-Elec Tech Co., Ltd. Light source for projection system and projection display apparatus
CN105388691A (zh) * 2015-12-30 2016-03-09 海信集团有限公司 一种激光光源装置和激光投影设备
CN108803215A (zh) * 2017-04-28 2018-11-13 中航国画（上海）激光显示科技有限公司 一种新型荧光轮激光投影机
CN108646510A (zh) * 2018-06-25 2018-10-12 成都九天光学技术有限公司 一种紧凑型投影光源
CN109960099A (zh) * 2019-04-30 2019-07-02 成都市极米科技有限公司 一种非共轴的投影光源系统
CN209674172U (zh) * 2019-04-30 2019-11-22 成都极米科技股份有限公司 一种非共轴的投影光源系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3964876A4 *

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