Title:
LIGHT SOURCE SYSTEM AND PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/196430
Kind Code:
A1
Abstract:
A light source system (100, 200, 300, 400) capable of effectively reducing light spots in a projection image, and a projection system. The light source system (100, 200, 300, 400,) comprises: a first laser module (102) used for emitting a laser having a first wavelength range; an area light-splitting piece (111) having a central area (A1) capable of reflecting the laser and a peripheral area (A2) capable of transmitting the laser; a colour wheel (113), at least part of the laser reflected by the central area (A1) entering the colour wheel (113), and the colour wheel (113) reflecting the laser as light having Lambertian distribution; a focusing lens (105) arranged between the first laser module (102) and the area light-splitting piece (111) for focusing the laser onto the central area (A1); a collecting lens set (112) arranged between the area light-splitting piece (111) and the colour wheel (113) for focusing at least part of the laser on the colour wheel (13) and parallelising the light having a Lambertian distribution incident from the colour wheel (113); a square rod (115) having an incident light face and an emergent light face, the parallelised light being focused onto the incident light face by the focusing lens (105); and a light diffusion element (201) positioned between the collecting lens set (112) and the square rod (115).
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Inventors:
HOU HAIXIONG (CN)
TANG XIAOFENG (CN)
LI YI (CN)
TANG XIAOFENG (CN)
LI YI (CN)
Application Number:
PCT/CN2018/118818
Publication Date:
October 17, 2019
Filing Date:
December 03, 2018
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G02B27/09; G02B27/10; G03B21/20
Foreign References:
| CN104111532A | 2014-10-22 | |||
| CN107329356A | 2017-11-07 | |||
| CN107490875A | 2017-12-19 | |||
| CN107688274A | 2018-02-13 | |||
| CN207067644U | 2018-03-02 | |||
| CN104020635A | 2014-09-03 | |||
| JP2012133337A | 2012-07-12 |
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