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Dual laser light source system

A light source system and dual-laser technology, which are applied in fixed light sources, optics, lighting devices, etc., can solve the problems of limited service life of bulb light sources, inability to meet high brightness and high color purity, etc., and achieve the goal of improving display quality and color purity. Effect

Active Publication Date: 2015-07-08
SHENZHEN ESTAR DISPLAYTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service life of the bulb light source is limited, and the brightness and color purity of the projection display screen can only be regarded as relatively sufficient, which cannot meet the requirements of high brightness and high color purity projection display, especially outdoor projection display.

Method used

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Embodiment Construction

[0038] See figure 1 , figure 1 It is a structural schematic diagram of an embodiment of the dual laser light source system of the present invention. Such as figure 1 As shown, the dual laser light source system of this embodiment includes: blue LD11, red LD12, beam splitter (including beam splitter 13 and second driving device (not shown)), double mirror group (including first mirror 14 and second reflector 15), fluorescent color wheel 16, first driving device (not shown), first light combining device 17, second light combining device 18, filter color wheel 19, third driving device 20 and light collection device 21.

[0039] In this embodiment, the spectroscopic device is arranged on the light path of the blue LD11, and the spectroscopic device partly reflects the transmitted part of the blue light incident on it, and the spectroscopic device reflects the newly generated color light from the fluorescent color wheel 16 incident thereon. Wherein, the blue light is incident o...

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PUM

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Abstract

The invention relates to a dual laser light source system. The dual laser light source system comprises a blue LD and a red LD, a beam splitting device, a fluorescent color wheel, a first drive device, a first beam combining device, a second beam combining device, a filter color wheel, a third drive device, a light collection device and a control device. The beam splitting device is used for partially transmitting and partially reflecting blue light and reflecting colored light newly generated by the fluorescent color wheel. The fluorescent color wheel can be used to at least convert the blue light into green light and reflect the green light. The first drive device is used to drive the fluorescent color wheel to rotate. The first beam combining device is used to combine red light and newly-generated colored light. The second beam combining device is used to combine the red light, the newly-generated colored light and the blue light. The third drive device is used to drive the rotation of the filter color wheel. The control device is used to control power switches of the first drive device, the second drive device, the third drive device, the blue LD and the red LD to make the fluorescent color wheel and the filter color wheel keep synchronization so as to generate timing colored light of a target optical power. Through the above method, the dual laser light source system provided in the invention can be used to improve the brightness and color saturation of a picture displayed through projection.

Description

technical field [0001] The invention relates to the technical field of illumination and display, in particular to a dual laser light source system. Background technique [0002] A single-chip DLP (Digital Light Processor) projector needs to provide three colors of red, green, and blue on one imaging device at the same time, and its imaging principle is to generate a full-color projection image through a high-speed rotating color wheel , the color wheel consists of red, green, and blue blocks. In the prior art, after the white light emitted by the light source passes through the rotating color wheel, the red, green and blue colors in the white light will be sequentially and alternately projected onto the surface of the DMD (Digtal Micromirror Device) chip. The reflection from the small mirror on the camera reaches the lens, and then the lens is projected to the screen to form an image. However, the service life of the bulb light source is limited, and the brightness and col...

Claims

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Application Information

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IPC IPC(8): G03B21/20G03B21/14F21V14/00
CPCF21V14/00G03B21/2013G03B21/204
Inventor 刘美鸿母林
Owner SHENZHEN ESTAR DISPLAYTECH
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