Title:
LASER AND LASER PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/185784
Kind Code:
A1
Abstract:
A laser and a laser projection device, relating to the technical field of photoelectricity. The laser comprises: a frame (100); the frame (100) comprising a bottom plate (101) and an annular side wall (102) located on the bottom plate (101); a sealing light-transmitting layer (600), connected to the annular side wall (102); the bottom plate (101), the annular side wall (102), and the sealing light-transmitting layer (600) forming a sealed accommodating space; a plurality of light-emitting chips (200), attached onto the bottom plate (101) of the frame (100); the plurality of light-emitting chips (200) comprising first-type light-emitting chips (201) and second-type light-emitting chips (202), and the polarization direction of laser emitted from the first-type light-emitting chips (201) being different from the polarization direction of laser emitted from the second-type light-emitting chips (202); at least one prism (300); the prism (300) corresponding to at least one of the plurality of light-emitting chips (200), and the prism (300) being used for receiving laser emitted from the corresponding plurality of light-emitting chips (200) and reflecting same to a light-emitting direction of the laser; and a phase retarder (400), located in the sealed accommodating space and parallel to the bottom plate (101), light beams of at least some of the light-emitting chips (200) being transmitted to the sealing light-transmitting layer (600) after the polarization direction of the laser is changed by means of the phase retarder (400).
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Inventors:
ZHOU ZINAN (CN)
LU YAO (CN)
GUO ZHAOSHI (CN)
LI JIANJUN (CN)
LU YAO (CN)
GUO ZHAOSHI (CN)
LI JIANJUN (CN)
Application Number:
PCT/CN2023/084222
Publication Date:
October 05, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20; H01S5/02255; H01S5/0232; H01S5/02335
Foreign References:
| CN114637161A | 2022-06-17 | |||
| CN217522368U | 2022-09-30 | |||
| CN113534587A | 2021-10-22 | |||
| CN114253061A | 2022-03-29 | |||
| CN113922204A | 2022-01-11 | |||
| JP2018190864A | 2018-11-29 | |||
| US20190252852A1 | 2019-08-15 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
Download PDF:
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