Light source system and projection equipment

A light source system and light source technology, applied in the field of optics, can solve the problems of low utilization efficiency of red light and achieve the effect of avoiding light loss and improving light utilization

Active Publication Date: 2015-12-30
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of this, the present invention provides a light source system and projection equipment to solve the problem of low light utilization efficiency of the red light emitted by the red supplementary light source in the prior art

Method used

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  • Light source system and projection equipment
  • Light source system and projection equipment
  • Light source system and projection equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a light source system, such as figure 2 As shown, the light source system includes two light sources, respectively an excitation light source 21 and a first supplementary light source 22 , and also includes a first light guiding component 23 , a wavelength converting device 24 , a second light guiding component 25 and a light homogenizing device 26 . In this embodiment, the first light guiding component 23 and the second light guiding component 25 realize light splitting and combination by using wavelengths. The first light guiding component 23 includes a filter 231 having a central film and edge films, and the second light guiding component 25 is the central film of the filter 231 . in:

[0047] The excitation light source 21 emits excitation light. The excitation light source 21 is a semiconductor diode or a semiconductor diode array. The semiconductor diode may be a laser diode (LD) or a light emitting diode (LED). The excitation light i...

Embodiment 2

[0066] This embodiment provides another light source system, please refer to Figure 4 , the light source system and figure 2 The difference of the light source system shown is that the second light guiding member 25 realizes light splitting and combining by means of etendue. Specifically, it is replaced by a reflective sheet 431 with a through hole figure 2 A filter 231 with a central diaphragm and edge diaphragms. In this embodiment, the first light guiding component 43 includes a reflective sheet 431 having a through hole, and the second light guiding component 25 is the through hole on the reflective sheet 431 .

[0067] Wherein the size of the through hole is smaller than the size of the reflection sheet 431 . The size of the through hole can be determined according to one or more combinations of the light loss when the first supplementary light passes through the through hole, the light loss when the excitation light passes through the through hole, and the light lo...

Embodiment 3

[0070] This embodiment provides another light source system, such as Figure 5 As shown, the light source system and figure 2 The difference of the light source system shown is that the second light guiding component realizes light splitting and combining by using polarization state. Specifically: the optical filter 531 in the light source system includes a polarizer and an edge film, wherein the edge film is the same as the edge film in Embodiment 1, and the difference is that figure 2 The central diaphragm of the middle optical filter 231 is replaced by a polarizer.

[0071] In this embodiment, the first light guiding component 53 is a filter 531 having a polarizer and an edge film, and the second light guiding component 25 is a polarizing plate in the filter 531 . The polarizer reflects light having a first polarization state and transmits light having a second polarization state. Wherein the first polarization state is the P state and the second polarization state is ...

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Abstract

The invention provides a light source system and a piece of projection equipment. The light source system comprises at least two light sources, a wavelength conversion device, a first light guide component, and a second light guide component. The at least two light sources include an exciting light source and a first complementary light source, and the exciting light source is used for emitting exciting light. The first light guide component is used for guiding the exciting light to the wavelength conversion device and guiding excited light emitted by the wavelength conversion device to a light homogenizing device. The wavelength conversion device is used for converting the exciting light into excited light and emitting the excited light to the first light guide component. The additional light source emits first complementary light of which the optical extend is smaller than that of the excited light. The second light guide component is used for guiding the first complementary light to the light homogenizing device. The size of the second light guide component is smaller than the size of the first light guide component. According to the invention, the utilization rate of the first complementary light can be greatly improved.

Description

technical field [0001] The present invention relates to the field of optical technology, more specifically, to a light source system and projection equipment. Background technique [0002] At present, solid-state light sources have been widely used in general lighting, special lighting and projection display due to their long life and environmental protection. Among them, the white light solid-state light source has great development potential in the field of lighting. [0003] The prior art provides a white light source that uses laser to excite phosphor powder to achieve ultra-high brightness. The white light source uses a blue-violet laser with a wavelength of 440nm-455nm to excite yellow phosphor powder of YAG:Ce material to generate high-efficiency yellow fluorescence. A blue laser with a wavelength of 440nm-470nm is then used to form a blue laser complementary to the yellow fluorescence, and the yellow fluorescence and the blue laser combine to form a white light sour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20H04N9/31
CPCG03B21/204G03B21/206G03B21/208H04N9/3167
Inventor 胡飞侯海雄
Owner APPOTRONICS CORP LTD
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