Title:
LIGHT SOURCE SYSTEM AND PROJECTION DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/204035
Kind Code:
A1
Abstract:
A light source system (31) and a projection display device (30). The light source system (31) comprises a first light source assembly (101), a second light source assembly (102), a wavelength conversion device (103), and a light homogenizing device (104); the first light source assembly (101) is used for emitting at least two beams of exciting light; the second light source assembly (102) is used for emitting at least one beam of laser light; the wavelength conversion device (103) is provided on a light path of the at least two beams of exciting light and is used for converting the received at least two beams of exciting light into at least two beams of excited light; the light homogenizing device (104) is used for homogenizing the excited light and the laser light; the excited light and the laser light respectively form excited light spots and laser light spots on a light incident side of the light homogenizing device (104); the laser light spot is located between two adjacent excited light spots, and the two adjacent excited light spots are symmetrical with respect to the laser light spot; or the excited light spot is located between two adjacent laser light spots, and the two adjacent laser light spots are symmetrical with respect to the excited light spot. By setting, the light exiting uniformity of the light source system (31) can be improved, thereby improving the uniformity of projection display.
Inventors:
HU FEI (CN)
WU CHAO (CN)
LI YI (CN)
WU CHAO (CN)
LI YI (CN)
Application Number:
PCT/CN2021/084197
Publication Date:
October 14, 2021
Filing Date:
March 30, 2021
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20
Foreign References:
| CN110389489A | 2019-10-29 | |||
| CN106125481A | 2016-11-16 | |||
| CN209373338U | 2019-09-10 | |||
| US6402325B1 | 2002-06-11 | |||
| CN104834171A | 2015-08-12 |
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