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1. (WO2018121059) LASER LIGHT SOURCE AND PROJECTION DEVICE

Pub. No.:    WO/2018/121059    International Application No.:    PCT/CN2017/109325
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Nov 04 00:59:59 CET 2017
IPC: G03B 21/20
G02B 27/48
Applicants: APPOTRONICS CORPORATION LIMITED
深圳市光峰光电技术有限公司
Inventors: HU, Fei
胡飞
GUO, Zuqiang
郭祖强
DU, Peng
杜鹏
LI, Yi
李屹
Title: LASER LIGHT SOURCE AND PROJECTION DEVICE
Abstract:
A laser light source (100, 200, 300, 400, 500) and a projection device (10). The laser light source (100, 200, 300, 400, 500) comprises a substrate (102, 302, 502), lasers (101a, 101b, 101c, 201a, 201b, 201c, 301a, 301b, 301c, 301d, 401a, 401b, 401c, 401d, 501a, 501b, 501c, 501d) disposed on the substrate (102, 302, 502), and heat dissipation elements (303, 304, 305, 306, 403, 404, 405, 406, 503, 504, 505, 506) disposed corresponding to the lasers (101a, 101b, 101c, 201a, 201b, 201c, 301a, 301b, 301c, 301d, 401a, 401b, 401c, 401d, 501a, 501b, 501c, 501d). The lasers (101a, 101b, 101c, 201a, 201b, 201c, 301a, 301b, 301c, 301d, 401a, 401b, 401c, 401d, 501a, 501b, 501c, 501d) emit laser light having the same wavelength range in a working state at the same temperature. The heat dissipation elements (303, 304, 305, 306, 403, 404, 405, 406, 503, 504, 505, 506) comprise at least two types of heat dissipation elements that are independently operated: a first type of heat dissipation element (303) and a second type of heat dissipation element (304). The lasers (101a, 101b, 101c, 201a, 201b, 201c, 301a, 301b, 301c, 301d, 401a, 401b, 401c, 401d, 501a, 501b, 501c, 501d) are correspondingly classified into at least two types of lasers: a first type of laser (101a, 201a, 301a, 401a, 501a) heat-dissipated by the first type of heat dissipation element (303) and a second type of laser (101b, 201b, 301b, 401b, 501b) heat-dissipated by the second type of heat dissipation element (304). The first type of heat dissipation element (303) and the second type of heat dissipation element (304) have different heat dissipation properties in a working state so that the first type of laser (101a, 201a, 301a, 401a, 501a) and the second type of laser (101b, 201b, 301b, 401b, 501b) have different temperatures in a working state. The light spectrum of the laser light finally emitted from the laser light source (100, 200, 300, 400, 500) is wider than that of the laser light emitted from either of the first type of laser (101a, 201a, 301a, 401a, 501a) and the second type of laser (101b, 201b, 301b, 401b, 501b).