- 专利标题: Video display device
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申请号: US18039529申请日: 2022-01-13
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公开(公告)号: US12073739B2公开(公告)日: 2024-08-27
- 发明人: Tetsuya Hayakawa
- 申请人: SEGA FAVE CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: SEGA FAVE CORPORATION
- 当前专利权人: SEGA FAVE CORPORATION
- 当前专利权人地址: JP Tokyo
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP 21006637 2021.01.19
- 国际申请: PCT/JP2022/000882 2022.01.13
- 国际公布: WO2022/158364A 2022.07.28
- 进入国家日期: 2023-05-31
- 主分类号: G09B27/00
- IPC分类号: G09B27/00 ; F21V9/40 ; F21V11/14 ; F21V13/02 ; F21V14/08 ; F21W121/00
摘要:
The present invention addresses the problem of providing a video display device that projects and displays video including starry sky images onto a target surface, that can reproduce the twinkling of stars and that can more faithfully reproduce an actual starry sky. Provided are a light source, a projection lens, a starry-sky projection negative plate, a twinkling negative plate with uneven light-transmitting properties, a starry-sky-end support unit that supports the starry-sky projection negative plate in a location onto which light from the light source is radiated, a twinkling-end support unit that supports the twinkling negative plate between the starry-sky projection negative plate and the projection lens or between the light source and the starry-sky projection negative plate, and an actuation mechanism that rotationally actuates, by power from an actuator, the starry-sky projection negative plate in a state of being supported by the starry-sky-end support unit and the twinkling negative plate in a state of being supported by the twinkling-end support unit. Light that has penetrated the starry-sky projection negative plate and the twinkling negative plate is radiated onto the target surface via the projection lens.
公开/授权文献
- US20230419863A1 VIDEO DISPLAY DEVICE 公开/授权日:2023-12-28
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