Title:
PROJECTION LIGHT SOURCE AND PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/087701
Kind Code:
A1
Abstract:
A projection light source (10) and a projection device. The projection light source (10) comprises a laser (101), a first optical path guide element (102), a second optical path guide element (103), a first dimming part (104), and a second dimming part (105). The first dimming part (104) and the second dimming part (105) are both moving components; the laser (101) is used for emitting laser of at least one color; the first optical path guide element (102) is used for guiding the laser to be incident to the first dimming part (104), and the first dimming part (104) is used for increasing a first etendue for the incident laser and then emitting the laser; the number of second optical path guide elements (103) and the number of second dimming parts (105) are both greater than or equal to 1, and each second optical path guide element (103) corresponds to one second dimming part (105); the second optical path guide element (103) is used for receiving the laser emitted from one dimming part other than the corresponding second dimming part (105) and guiding the received laser to be incident to the corresponding second dimming part (105), and the second dimming part (105) is used for increasing a second etendue for the incident laser and then emitting the laser.
Inventors:
LI WEI (CN)
GU XIAOQIANG (CN)
TIAN YOULIANG (CN)
GU XIAOQIANG (CN)
TIAN YOULIANG (CN)
Application Number:
PCT/CN2023/103396
Publication Date:
May 02, 2024
Filing Date:
June 28, 2023
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20; G02B27/48
Foreign References:
| CN218630504U | 2023-03-14 | |||
| CN109270703A | 2019-01-25 | |||
| CN114721161A | 2022-07-08 | |||
| CN113960866A | 2022-01-21 | |||
| CN113687569A | 2021-11-23 | |||
| JP2019184947A | 2019-10-24 | |||
| CN114609854A | 2022-06-10 | |||
| CN114594610A | 2022-06-07 | |||
| CN103888702A | 2014-06-25 | |||
| CN103597400A | 2014-02-19 | |||
| CN110632814A | 2019-12-31 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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