Title:
LASER PROJECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/030419
Kind Code:
A1
Abstract:
A laser projection apparatus (1000), which relates to the technical field of display. The laser projection apparatus (1000) comprises a light source assembly (1), an optical machine (2) and a lens (3). The light source assembly (1) comprises a bottom plate (1011), side walls (1012), a first light-emitting chip (1022), a first reflecting portion (103), a first collimating portion (104) and a light homogenizing component (105). The side walls (1012) are located on the bottom plate (1011), and an accommodating space is defined between the side walls (1012) and the bottom plate (1011). The first light-emitting chip (1022) is located in the accommodating space and is configured to emit a first laser beam. The light emergent direction of the first light emitting chip (1022) is parallel to the bottom plate (1011). The first reflecting portion (103) is located in the accommodating space, is arranged on a light-emergent side of the first light-emitting chip (1022), and is configured to guide the first laser beam in a direction away from the bottom plate (1011). The first collimating portion (104) is located in the accommodating space, and is configured to collimate the first laser beam. The light homogenizing component (105) is located on the side of each side wall (1012) away from the bottom plate (1011), and is configured to homogenize the first laser beam and emit the first laser beam out of the accommodating space, such that the first laser beam forms at least part of an illuminating beam.
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Inventors:
ZHANG XIN (CN)
TIAN YOULIANG (CN)
YAN KE (CN)
ZHOU ZINAN (CN)
LU YAO (CN)
TIAN YOULIANG (CN)
YAN KE (CN)
ZHOU ZINAN (CN)
LU YAO (CN)
Application Number:
PCT/CN2022/116368
Publication Date:
March 09, 2023
Filing Date:
August 31, 2022
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20
Domestic Patent References:
| WO2015005329A1 | 2015-01-15 |
Foreign References:
| CN112636160A | 2021-04-09 | |||
| US6075648A | 2000-06-13 | |||
| JP2016046481A | 2016-04-04 | |||
| CN113703272A | 2021-11-26 | |||
| CN113922204A | 2022-01-11 | |||
| CN113922202A | 2022-01-11 | |||
| CN113889839A | 2022-01-04 | |||
| CN113067248A | 2021-07-02 | |||
| US20180143445A1 | 2018-05-24 | |||
| US20110037953A1 | 2011-02-17 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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