Title:
PROJECTION LIGHT SOURCE AND PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/259285
Kind Code:
A1
Abstract:
A projection light source (10) and a projection device, relating to the technical field of photoelectricity. In the projection light source (10), a light combining lens (103) comprises a plurality of transmissive regions (1031a, 1031b) and a plurality of reflecting regions (1032a, 1032b); a fluorescent wheel (105) comprises a first region (1051) and a second region (1052) provided with a light diffusion part; a laser (101) emits a plurality of laser beams; the plurality of laser beams (101) are respectively transmitted to the plurality of transmissive regions (1031a, 1031b), and are transmitted to a convergent lens (104) by means of the transmissive regions (1031a, 1031b); lights spots formed by any two laser beams on the convergent lens (104) are asymmetry about the light axis (h) of the convergent lens (104); the convergent lens (104) is used for converging the incident laser to the fluorescent wheel (105); the first region (1051) is excited to emit fluorescence when being irradiated by the laser, and the fluorescence passes through the convergent lens (104) and is transmitted to the reflecting regions (1032a, 1032b); when the second region (1052) is irradiated by the laser, the light diffusion part diffuses the laser so that the diffused laser passes through the convergent lens (104) and is transmitted to the reflecting regions (1032a, 1032b); the reflecting regions (1032a, 1032b) is used for reflecting the incident light along a target direction.
Inventors:
YAN KE (CN)
Application Number:
PCT/CN2021/101616
Publication Date:
December 30, 2021
Filing Date:
June 22, 2021
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20; G02B27/10
Foreign References:
| CN107315312A | 2017-11-03 | |||
| CN111025833A | 2020-04-17 | |||
| CN109991801A | 2019-07-09 | |||
| CN103256567A | 2013-08-21 | |||
| CN207676111U | 2018-07-31 | |||
| US20160274446A1 | 2016-09-22 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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