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Light source system and related projection system

A technology of light source system and spectroscopic system, which is applied in optics, optical components, and optical components used to change the spectral characteristics of emitted light, etc. Light conversion efficiency is not high, to achieve the effect of improving efficiency

Active Publication Date: 2014-04-09
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in this phosphor light source, the red phosphor is a bottleneck that limits the working life and luminous efficiency of the light source
The light conversion efficiency of red fluorescent powder is not high, and the lost energy is converted into heat, causing the temperature of the fluorescent powder to rise rapidly, which in turn will affect its luminous efficiency and service life, forming a vicious circle

Method used

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  • Light source system and related projection system
  • Light source system and related projection system
  • Light source system and related projection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see figure 2 , figure 2 is a schematic diagram of an embodiment of the light source system of the present invention. The light source system 200 of this embodiment includes a light emitting device 1 , a light splitting system 2 , a first spatial light modulator 211 and a second spatial light modulator 213 .

[0054]The light emitting device 1 includes an excitation light source 201 for generating excitation light, a wavelength conversion layer 203 and a first driving device 205 . The wavelength conversion layer 203 includes a first subregion and a second subregion, the first subregion is provided with a first wavelength conversion material for absorbing the excitation light and emitting the first light; the second subregion is provided with a light-transmitting region for The excitation light is transmitted, which is the second light. In this embodiment, the excitation light source 201 is used to generate blue excitation light. The excitation light source 201 is p...

Embodiment 2

[0069] Such as Figure 5 as shown, Figure 5 It is a schematic diagram of another embodiment of the light source system of the present invention. In this embodiment, the light source system 500 includes a light emitting device 1 , a light splitting system 2 , a first spatial light modulator 511 and a second spatial light modulator 513 . The light emitting device 1 includes an excitation light source 501 , a wavelength conversion layer 503 and a first driving device 505 .

[0070] This embodiment and figure 2 Differences in the illustrated embodiments include:

[0071] The spectroscopic system 2 includes a filter 509 and a mirror 507 . The filter 509 is used to receive the yellow light 53 and the blue light 55 sequentially emitted by the wavelength conversion layer 503, and transmit the green light 53a of the blue light 55 and the yellow light 53 to the DMD511 from the first optical channel, and reflect the yellow light 53 The red light 53b goes to the reflector 507, and ...

Embodiment 3

[0074] see Figure 6 , Figure 6 It is a schematic diagram of another embodiment of the light source system of the present invention. In this embodiment, the light source system 600 includes a light emitting device 1 , a light splitting system 2 , a first spatial light modulator 611 and a second spatial light modulator 613 . The light emitting device 1 includes an excitation light source 601 , a wavelength conversion layer 603 and a first driving device 605 .

[0075] This embodiment and Figure 5 Differences in the illustrated embodiments include:

[0076] The spectroscopic system 2 includes a first spectroscopic device 609, a second driving device 607 and a first control device (not shown). In order to improve the utilization rate of the light emitted by the light emitting device 1, the light source system 600 also includes a collecting lens 615 arranged on the optical path between the light emitting device 1 and the spectroscopic system 2, for collecting the yellow ligh...

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Abstract

The invention discloses a light source system. The light source system includes a light emitting device used for orderly emitting first light and second light, a light splitting system used for splitting the first light from the light emitting device into light in a first wavelength range and light in a second wavelength range which are emitted along a first light path and a second light path respectively and for emitting at least part of the second light from the light emitting device along the first light path, a first spatial light modulator which is used for modulating the light emitted along the first light path by optical splitting system, and a second spatial light modulator which is used for modulating at least part of the light emitted along the second light path by the light splitting system. The light source system of the invention is advantageous in high light emitting efficiency and low cost.

Description

technical field [0001] The present invention relates to the field of illumination and display technology, in particular to a light source system and its related projection system. Background technique [0002] In the existing single-chip DMD (Digital Micromirror Device, digital micromirror device) system, multiple primary color lights alternately enter the DMD (DMD) and are modulated by it, and the modulated monochromatic light images are quickly alternately switched on the screen, and then The color image is formed by mixing the time-series monochromatic light images by using the residual visual effect of the human eye. However, in the prior art, R (red, red light), G (green, green light), and B (blue, blue light) three primary color lights are generally used for modulation. The most common way to obtain the sequential light of three primary colors is to sequentially excite different segments on the color wheel with excitation light to sequentially emit different colors of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/00G02B27/10F21V9/10F21V9/40
CPCG03B21/204
Inventor 胡飞李屹曹亮亮杨毅
Owner APPOTRONICS CORP LTD