发明授权
- 专利标题: Lighting device
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申请号: US18116878申请日: 2023-03-03
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公开(公告)号: US12018831B2公开(公告)日: 2024-06-25
- 发明人: Masafumi Okada , Nobuyuki Suzuki , Makoto Hasegawa
- 申请人: Japan Display Inc.
- 申请人地址: JP Tokyo
- 专利权人: JAPAN DISPLAY INC.
- 当前专利权人: JAPAN DISPLAY INC.
- 当前专利权人地址: JP Tokyo
- 代理机构: XSENSUS LLP
- 优先权: JP 22033350 2022.03.04
- 主分类号: F21V5/00
- IPC分类号: F21V5/00 ; F21V7/06 ; F21V9/08 ; G02F1/29
摘要:
The purpose is to realize a lighting device of thin, small light distribution angle, and less leak light. Further, the purpose is to realize a lighting device which can control light beam accurately with liquid crystal lenses. The structure of the invention is as follows. A lighting device including: a reflector cylinder including a mirror thereinside; and a liquid crystal lens assembly that is disposed at a light emitting surface of the reflector cylinder and includes a plurality of liquid crystal lenses being stacked, in which the liquid crystal lens assembly includes a light shading film which defines a light emitting area of the liquid crystal lens assembly and which is formed in parallel with the light emitting surface of the reflector cylinder.
公开/授权文献
- US20230280013A1 LIGHTING DEVICE 公开/授权日:2023-09-07
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