Title:
LIGHT SOURCE ASSEMBLY AND PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/259268
Kind Code:
A1
Abstract:
A light source assembly (10) and a projection device. The light source assembly (10) comprises a light-emitting assembly (101) which emits a first beam of laser light (S1) and a second beam of laser light (S2); the first beam of laser light (S1) and the second beam of laser light (S2) are condensed by a beam condensing lens group (106), and collimated and converged by a collimating lens group (105) sequentially to be incident onto a fluorescent wheel (103); the first beam of laser light (S1) and the second beam of laser light (S2) are not symmetrical with respect to an optical axis of the collimating lens group (105). The first beam of laser light (S1) and the second beam of laser light (S2) can excite a fluorescent region (103) to generate a first fluorescence (E1) and a second fluorescence (E2), respectively, and the first fluorescence (E1) and the second fluorescence (E2) are reflected by the fluorescent wheel (103) to be respectively incident onto a first reflection part (1022a) and a second reflection part (1022b); the first beam of laser light (S1) and the second beam of laser light (S2) may be reflected by a reflection region (1032) of the fluorescent wheel (103), and are incident onto the first reflection part (1022a) and the second reflection part (1022b), thereby realizing combined output of the laser light and the fluorescence. The light source assembly (10) can output polychromatic light and realize miniaturization.
Inventors:
LI WEI (CN)
HAN WUYUE (CN)
TIAN YOULIANG (CN)
HAN WUYUE (CN)
TIAN YOULIANG (CN)
Application Number:
PCT/CN2021/101564
Publication Date:
December 30, 2021
Filing Date:
June 22, 2021
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20
Foreign References:
| JP2014075221A | 2014-04-24 | |||
| CN102929086A | 2013-02-13 | |||
| CN104698729A | 2015-06-10 | |||
| CN107861324A | 2018-03-30 | |||
| JP2020052236A | 2020-04-02 | |||
| CN108931879A | 2018-12-04 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
Download PDF:
Previous Patent: BATTERY CHARGING AND DISCHARGING CIRCUIT
Next Patent: LIGHT SOURCE ASSEMBLY AND PROJECTION DEVICE
Next Patent: LIGHT SOURCE ASSEMBLY AND PROJECTION DEVICE