Title:
LASER LIGHT PATH SYSTEM AND PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/188307
Kind Code:
A1
Abstract:
A laser light path system (10) and a projection device, relating to the technical field of projected display. The laser light path system (10) comprises a laser (11), a light combining mirror (12), a loop assembly (13), and a fluorescence assembly (14). The light combining mirror (12) comprises a first region (121) and a second region (122), and an included angle between a light emitting direction (f1) of the laser (11) and a mirror surface of the first region (121) is an acute angle. A light beam (S) emitted by the laser (11) comprises a first light beam (S1) that passes through the first region (121) and is emitted to the fluorescence assembly (14), the fluorescence assembly (14) generates fluorescence (S3) under the excitation of the first light beam (S1) and reflects the fluorescence (S3) to the second region (122), and the second region (122) reflects the fluorescence (S3) towards a light outlet (15). Moreover, the light beam (S) emitted by the laser (11) further comprises a second light beam (S2) reflected by the first region (121) to the loop assembly (13), and the loop assembly (13) reflects the second light beam (S2) to the first region (121) again and emits the second light beam (S2) towards the light outlet (15) synchronously with the fluorescence (S3) through the first region (121).
Inventors:
LI WEI (CN)
GU XIAOQIANG (CN)
GU XIAOQIANG (CN)
Application Number:
PCT/CN2021/103533
Publication Date:
September 15, 2022
Filing Date:
June 30, 2021
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20
Foreign References:
| CN107505807A | 2017-12-22 | |||
| CN104698729A | 2015-06-10 | |||
| CN103453448A | 2013-12-18 | |||
| CN108153089A | 2018-06-12 | |||
| US20180246400A1 | 2018-08-30 | |||
| US20160077419A1 | 2016-03-17 | |||
| JP2018194819A | 2018-12-06 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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