Title:
LIGHT SOURCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/135962
Kind Code:
A1
Abstract:
A light source module (100), comprising: a first light source module (101), configured to output a first beam; a second light source module (1011), configured to output a second beam, the etendue of the first beam being less than the etendue of the second beam; a polarization conversion system (17), configured to perform polarization conversion on the first beam and/or the second beam; and an etendue increase module, provided on an optical path between the first light source module (101) and the polarization conversion system (17), and configured to increase the etendue of the first beam, so that the etendue of the first beam incident to the polarization conversion system (17) can be increased, reducing the optical power density of the first beam incident to the polarization conversion system (17), and avoiding the problem of reliability caused by excessive heating of a device.
Inventors:
GUO ZUQIANG (CN)
DU PENG (CN)
XIE YINGXIONG (CN)
DU PENG (CN)
XIE YINGXIONG (CN)
Application Number:
PCT/CN2020/137095
Publication Date:
July 08, 2021
Filing Date:
December 17, 2020
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20; G02B5/30
Foreign References:
| US20190391474A1 | 2019-12-26 | |||
| CN109407453A | 2019-03-01 | |||
| CN107797369A | 2018-03-13 | |||
| CN104062837A | 2014-09-24 | |||
| US20190268578A1 | 2019-08-29 | |||
| CN103543589A | 2014-01-29 | |||
| CN105339818A | 2016-02-17 |
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