Title:
PROJECTION DEVICE AND PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/046373
Kind Code:
A1
Abstract:
Provided are a projection device and a projection system. The projection device comprises a light source, an optical modulation assembly and a lens, wherein the light source comprises a laser and a dimming component, the laser being configured to emit laser light of a plurality of colors, and the dimming component comprising a plurality of dimming areas, each dimming area comprising a plurality of diffraction microstructures, diffraction microstructures in different dimming areas being different; the dimming component being configured to diffract the laser light of a plurality of colors and emit the laser light towards the same area, such that light spots, which are formed by the laser light of a plurality of colors, coincide after the laser light passes through the dimming component; and the plurality of dimming areas satisfying at least one of: the plurality of dimming areas being configured to contract corresponding laser light in a first direction; or the plurality of dimming areas being configured to expand the corresponding laser light in a second direction.
Inventors:
LI WEI (CN)
YAN KE (CN)
TIAN YOULIANG (CN)
GU XIAOQIANG (CN)
YAN KE (CN)
TIAN YOULIANG (CN)
GU XIAOQIANG (CN)
Application Number:
PCT/CN2023/115867
Publication Date:
March 07, 2024
Filing Date:
August 30, 2023
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20; G02B6/00; G02B27/10; G02B27/14; G02B27/42; H04N9/31
Foreign References:
| CN115509075A | 2022-12-23 | |||
| CN113625522A | 2021-11-09 | |||
| CN110850669A | 2020-02-28 | |||
| CN113625523A | 2021-11-09 | |||
| US20060023173A1 | 2006-02-02 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT & TRADEMARK AGENT LTD. (CN)
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