WO2020088670A1 - 色轮及照明系统 - Google Patents

色轮及照明系统 Download PDF

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Publication number
WO2020088670A1
WO2020088670A1 PCT/CN2019/115127 CN2019115127W WO2020088670A1 WO 2020088670 A1 WO2020088670 A1 WO 2020088670A1 CN 2019115127 W CN2019115127 W CN 2019115127W WO 2020088670 A1 WO2020088670 A1 WO 2020088670A1
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light
blue light
color wheel
lens module
emit
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PCT/CN2019/115127
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English (en)
French (fr)
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李龙
徐君
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苏州乐梦光电科技有限公司
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Publication of WO2020088670A1 publication Critical patent/WO2020088670A1/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
    • 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

Definitions

  • This application relates to a color wheel and lighting system.
  • blue light is generally used as the main light source.
  • the light emitted by the blue light is converted into yellow light and green light by the fluorescent light source, and then converted into red, green and blue colors by the filter color wheel and projected on the DMD chip To form the image seen by the human eye.
  • the current lighting system usually has the problems of low power and poor brightness.
  • the present application provides a color wheel and lighting system that can achieve high power and high brightness.
  • the present application provides a color wheel including a runner body formed with a ring-shaped portion, the ring-shaped portion is divided into a fluorescence splitting region configured to absorb blue light and emit a wavelength different from the wavelength of blue light and configured It is a light-transmitting area that transmits laser light.
  • the present application also provides a lighting system, including a light source emitting blue light, a first lens module disposed on one side of the light source, a dichroic film with reverse blue, translucent, red, yellow, and green colors, a color wheel, and a reflector.
  • the color patch has a first surface biased toward the first lens module and a second surface facing away from the first lens module;
  • the light source emits blue light toward the first lens module
  • the blue light is focused through the first lens module to the first surface of the dichroic film, and the first surface of the dichroic film reflects the blue light to the color wheel;
  • Part of the blue light reflected on the color wheel is absorbed to emit light with a wavelength different from the blue light wavelength to the first side of the dichroic sheet;
  • the reflecting mirror reflects blue light to the second surface of the dichroic sheet.
  • FIG. 1 is a schematic structural diagram of a lighting device shown in an embodiment of the present application
  • FIG. 2 is a schematic plan view of a color wheel used in the lighting device shown in FIG. 1;
  • FIG. 3 is a schematic plan view of another color wheel used in the lighting device shown in FIG. 1.
  • blue light is indicated by a dotted line
  • the direction indicated by arrow a is the moving direction of blue light
  • the wavelengths of red light, green light, and yellow light are different from blue light
  • the direction indicated by arrow b is red light.
  • Green light, yellow light moving direction, red light, green light, yellow light are indicated by dot-dash line.
  • the lighting system shown in an embodiment of the present application includes a light source 1 that emits blue light, a first lens module 2, a dichroic dichroic sheet 3 that reflects blue, red, yellow, and green, a color wheel 4, and a reflector 5.
  • the light source 1 and the dichroic film 3 are respectively disposed on opposite sides of the first lens module 2, the first lens module 2 is located on the blue light emitting path of the light source 1, and the dichroic film 3 is diagonal Set on one side of the first lens module 2, the dichroic sheet 3 has a first surface 31 biased toward the first lens module 2 and a second surface 32 facing away from the first lens module 2.
  • the central axis of the blue light-emitting path passes through the center of the first lens module 2 and the center of the dichroic film 3.
  • the center of the first lens module 2 and the center of the dichroic sheet 3 may not be on the central axis of the blue light emitting path.
  • the first lens module 2 and the dichroic film 3 can be set as a movable type, which can move relative to the light source 1, so that the first lens module 2 and the dichroic film 3 are convenient for use Position adjustment.
  • the dichroic film 3, the color wheel 4, and the first lens module 2 are arranged in a triangle, and the arrangement of the corners of the mouth is a right triangle.
  • the color wheel 4 is located between the mirror 5 and the dichroic film 3.
  • the color wheel 4 includes a runner body 41 formed with a ring-shaped portion, the ring-shaped portion is divided into a fluorescence splitting region configured to absorb blue light and emit a wavelength different from the wavelength of blue light and configured to The light transmitting area 42 that transmits laser light.
  • the fluorescent light splitting area includes a yellow light splitting area 43 configured to absorb blue light and emit yellow light and a green light splitting area 44 configured to absorb blue light and emit green light.
  • the ring-shaped portion is composed of a plurality of arc-shaped beam splitters, and the fluorescent beam splitting area and the light-transmitting area 42 are formed by a ring beam splitter.
  • the light source 1 emits blue light toward the first lens module 2; the blue light is focused by the first lens module 2 to the first surface 31 of the dichroic film 3, and the The first surface 31 reflects the blue light to the color wheel 4; part of the blue light reflected to the color wheel 4 is absorbed to emit yellow light and green light with wavelengths different from the blue light wavelength to the first of the dichroic sheet 3 Surface 31; part of the blue light reflected onto the color wheel 4 is transmitted from the light-transmitting area 42 to the mirror 5; the mirror 5 reflects the blue light to the second surface 32 of the dichroic sheet 3 .
  • the dichroic film 3 Since the dichroic film 3 is blue-red, red-yellow-green, the yellow light and green light emitted by the color wheel 4 will pass through the first surface 31 to the second surface 32 of the dichroic film 3 to transmit, and When the reflecting mirror 5 reflects the blue light to the second surface 32 of the dichroic film 3, the second surface 32 of the dichroic film 3 reflects the blue light to converge with the yellow light and the green light, and then can combine the light through the lighting system The device reprocesses blue light, yellow light and green light.
  • the light source 1 is a light source matrix.
  • the light source 1 may also be a single light source.
  • the first lens module 2 includes a convex lens 21, a concave lens 22, and a diffusion sheet 23 arranged in this order along the propagation direction of the optical path.
  • the convex lens 21, the concave lens 22, and the diffusion sheet 23 are arranged in parallel, the focus of the three Coaxial. It is true that in other embodiments, the first lens module 2 may be a convex lens 21 or a plurality of convex lenses 21 arranged in parallel.
  • a second lens module 6 is provided between the dichroic film 3 and the color wheel 4, and the second lens module 6 may include two convex lenses arranged in parallel.
  • the number of convex lenses in the second lens module may be set according to actual requirements, such as one or three or more.
  • the fluorescent beam splitter may further include a red beam splitter 45 'configured to absorb blue light and emit red light, and a yellow beam splitter 43 configured to absorb blue light and emit yellow light.
  • a green light splitting area 44' configured to absorb blue light and emit green light; part of the blue light reflected on the color wheel is located in the red light splitting area 45 'and is absorbed to emit red light to the dichroic color
  • the first side of the film may also be composed of a plurality of arc-shaped beam splitters.
  • the red beam splitting area 45 ', the green beam splitting area 44', the yellow beam splitting area 43 ', and the light-transmitting area are formed by a ring beam splitting plate.
  • blue light is absorbed by the fluorescence splitting area of the color wheel 4 and emits light having a wavelength different from the wavelength of blue light, and blue light is transmitted to the mirror 5 through the light-transmitting area 42 Then, the blue light is sent to the dichroic film 3 by the reflecting mirror 5. Since the dichroic film 3 is inverse blue, translucent, red, yellow and green, the whole lighting system can realize high power and high brightness.
  • blue light is absorbed by the fluorescence splitting area of the color wheel and emits light with a wavelength different from the blue light wavelength, the blue light is transmitted to the mirror through the light-transmitting area, and then the blue light is reflected by the mirror Sent to the dichroic film, because the dichroic film is inverse blue, translucent, red, yellow, green, so that the entire lighting system can achieve high power and high brightness.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种照明系统和色轮（4），色轮（4）包括转轮本体（41），转轮本体（41）上形成有环形部，环形部被分隔成被配置为吸收蓝光并发出波长不同于蓝光波长的荧光分光区和被配置为透射激光的透光区（42）。

Description

色轮及照明系统
本公开要求在2018年11月03日提交中国专利局、申请号为201821803930.0的中国专利申请的优先权，以上申请的全部内容通过引用结合在本公开中。
技术领域
本申请涉及一种色轮及照明系统。
背景技术
相关技术中的激光投影仪光路模组中，一般采用蓝光作为主光源，蓝光发出的光线通过荧光光源转化为黄光和绿光，然后经过滤色轮转化为红绿蓝三色投射在DMD芯片上，从而形成人眼所看到的图像。但是，目前的照明系统中，通常存在功率低和亮度差的问题。
发明内容
本申请提供一种色轮及照明系统，能够实现高功率和高亮度。
本申请提供一种色轮，包括转轮本体，所述转轮本体上形成有环形部，所述环形部被分隔成被配置为吸收蓝光并发出波长不同于蓝光波长的荧光分光区和被配置为透射激光的透光区。
本申请还提供一种照明系统，包括发出蓝光的光源、设置在所述光源一侧的第一透镜模组、反蓝透红黄绿的二向色片、色轮和反射镜，所述二向色片具有偏向第一透镜模组的第一面和背向第一透镜模组的第二面；
所述光源朝第一透镜模组发出蓝光；
所述蓝光透过所述第一透镜模组聚焦至所述二向色片的第一面，所述二向色片的第一面反射所述蓝光至色轮；
反射至所述色轮上的部分蓝光被吸收以发出波长不同于蓝光波长的光至所述二向色片第一面；
反射至所述色轮上的部分蓝光由所述透光区透射至所述反射镜；
所述反射镜将蓝光反射至所述二向色片的第二面。
附图说明
图1为本申请一实施例所示的照明装置的结构示意图；
图2为应用在图1所示的照明装置中的色轮的平面示意图；
图3为应用在图1所示的照明装置中的另一种色轮的平面示意图。
具体实施方式
下面结合附图和实施例，对本申请的具体实施方式作进一步详细描述。以下实施例用于说明本申请，但不用来限制本申请的范围。
请参见图1和图2，在图1中蓝光用虚线表示，箭头a所指方向为蓝光的移动方向，红光、绿光、黄光的波长不同于蓝光，箭头b所指方向为红光、绿光、黄光的移动方向，红光、绿光、黄光用点划线表示。本申请一实施例所示的照明系统包括发出蓝光的光源1、第一透镜模组2、反蓝透红黄绿的二向色片3、色轮4和反射镜5。所述光源1和二向色片3分别设置在第一透镜模组2的相对两侧，所述第一透镜模组2位于光源1的蓝光发光路径上，所述二向色片3斜向设置在第一透镜模组2的一侧，所述二向色片3具有偏向第一透镜模组2的第一面31和背向第一透镜模组2的第二面32。在本实施例中，所述蓝光发光路径的中轴线经过第一透镜模组2的中心、二向色片3的中心，诚然，其他实施例中，由于可能存在的安装偏差，在允许的偏差范围内，第一透镜模组2的中心、二向色片3的中心可以不在蓝光发光路径的中轴线上。为了减小偏差，第一透镜模组2、二向色片3可设置为移动式，其可相对所述光源1移动，从而在使用时，便于第一透镜模组2、二向色片3的位置调整。二向色片3、色轮4、第一透镜模组2呈三角形式布置，其嘴角布置方式为直角三角形。所述色轮4位于反射镜5和二向色片3之间。所述色轮4包括转轮本体41，所述转轮本体41上形成有环形部，所述环形部被分隔成被配置为吸收蓝光并发出波长不同于蓝光波长的荧光分光区和被配置为透射激光的透光区42。在本实施例中，该荧光分光区包括被配置为吸收蓝光并发出黄光的黄色分光区43和被配置为吸收蓝光并发出绿光的绿色分光区44。本实施例中，所述环形部由多个弧形分光片组成，所述荧光分光区、透光区42由环形分光片形成。
所述光源1朝第一透镜模组2发出蓝光；所述蓝光透过所述第一透镜模组2聚焦至所述二向色片3的第一面31，所述二向色片3的第一面31反射所述蓝光至色轮4；反射至所述色轮4上的部分蓝光被吸收以发出波长不同于蓝光波长的黄光、绿光至所述二向色片3的第一面31；反射至所述色轮4上的部分蓝光由所述透光区42透射至所述反射镜5；所述反射镜5将蓝光反射至所述二向色片 3的第二面32。由于该二向色片3反蓝透红黄绿，所以，当色轮4发出的黄光、绿光将透过二向色片3的第一面31至第二面32以透射出，又当反射镜5将蓝光反射至二向色片3的第二面32，二向色片3的第二面32将蓝光反射，以与黄光、绿光汇合，然后可通过照明系统的合光装置将蓝光、黄光、绿光再处理。
在一些实施例中，所述光源1为光源矩阵，当然，该光源1也可以为单个光源。在本实施例中，所述第一透镜模组2包括沿光路的传播方向依次设置的凸透镜21、凹透镜22和扩散片23，该凸透镜21、凹透镜22和扩散片23平行设置，三者的焦点同轴。诚然，在其他实施方式中，所述第一透镜模组2可以为一个凸透镜21或由多个凸透镜21平行排列组成。
在本实施例中，所述二向色片3与色轮4之间设置有第二透镜模组6，所述第二透镜模组6可包括两个平行排列的凸透镜。在其他实施方式中，第二透镜模组内的凸透镜的数量可以根据实际需求设置，如一个或者三个或三个以上。
请参见图3，在另一实施例中，所述荧光分光区还可以包括被配置为吸收蓝光并发出红光的红色分光区45’、被配置为吸收蓝光并发出黄光的黄色分光区43’和被配置为吸收蓝光并发出绿光的绿色分光区44’；反射至所述色轮上的部分蓝光位于所述红色分光区45’，并被吸收以发出红光至所述二向色片第一面。本实施例中的环形部可同样由多个弧形分光片组成，所述红色分光区45’、绿色分光区44’、黄色分光区43’、透光区由环形分光片形成。
综上所述，通过将上述色轮4应用在照明系统中，通过色轮4的荧光分光区将蓝光吸收并发出波长不同于蓝光波长的光，通过透光区42将蓝光透射至反射镜5，然后由反射镜5将蓝光发送至二向色片3上，由于该二向色片3为反蓝透红黄绿，所以，使得整个照明系统能够实现高功率和高亮度。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
通过将本申请的色轮应用在照明系统中，通过色轮的荧光分光区将蓝光吸收并发出波长不同于蓝光波长的光，通过透光区将蓝光透射至反射镜，然后由反射镜将蓝光发送至二向色片上，由于该二向色片为反蓝透红黄绿，所以，使得整个照明系统能够实现高功率和高亮度。

Claims (10)

  1. 一种色轮，包括转轮本体，所述转轮本体上形成有环形部，所述环形部被分隔成被配置为吸收蓝光并发出波长不同于蓝光波长的荧光分光区和被配置为透射激光的透光区。
  2. 如权利要求1所述的色轮，其中，所述环形部由多个弧形分光片组成，所述荧光分光区、透光区由环形分光片形成。
  3. 如权利要求1所述的色轮，其中，所述荧光分光区包括被配置为吸收蓝光并发出黄光的黄色分光区和被配置为吸收蓝光并发出绿光的绿色分光区。
  4. 如权利要求3所述的色轮，其中，所述荧光分光区还包括被配置为吸收蓝光并发出红光的红色分光区。
  5. 一种照明系统，包括发出蓝光的光源、设置在所述光源一侧的第一透镜模组、反蓝透红黄绿的二向色片、如权利要求1至4项中任一项所述的色轮和反射镜，所述二向色片具有偏向第一透镜模组的第一面和背向第一透镜模组的第二面；
    所述光源朝第一透镜模组发出蓝光；
    所述蓝光透过所述第一透镜模组聚焦至所述二向色片的第一面，所述二向色片的第一面反射所述蓝光至色轮；
    反射至所述色轮上的部分蓝光被吸收以发出波长不同于蓝光波长的光至所述二向色片第一面；
    反射至所述色轮上的部分蓝光由所述透光区透射至所述反射镜；
    所述反射镜将蓝光反射至所述二向色片的第二面。
  6. 如权利要求5所述的照明系统，其中，所述第一透镜模组包括沿光路的传播方向依次设置的凸透镜、凹透镜和扩散片；或者所述第一透镜模组包括至少一个凸透镜。
  7. 如权利要求5所述的照明系统，其中，所述二向色片与色轮之间设置有第二透镜模组。
  8. 如权利要求7所述的照明系统，其中，所述第二透镜模组包括至少两个平行排列的凸透镜。
  9. 如权利要求5所述的照明系统，其中，所述光源为光源矩阵。
  10. 如权利要求5所述的照明系统，其中，所述荧光分光区还包括被配置为吸收蓝光并发出红光的红色分光区；
    反射至所述色轮上的部分蓝光位于所述红色分光区，并被吸收以发出红光 至所述二向色片第一面。
PCT/CN2019/115127 2018-11-03 2019-11-01 色轮及照明系统 WO2020088670A1 (zh)

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CN208819006U (zh) * 2018-11-03 2019-05-03 苏州乐梦光电科技有限公司 色轮及照明系统
JP7484448B2 (ja) * 2020-06-04 2024-05-16 セイコーエプソン株式会社 照明装置およびプロジェクター
CN112420899B (zh) * 2020-09-29 2022-06-14 湖州市汉新科技有限公司 高显指高热导荧光薄膜、制备方法及在显示设备中的应用

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