发明授权
- 专利标题: Video display device, head-mounted display and head-up display
- 专利标题(中): 视频显示设备,头戴式显示器和平视显示器
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申请号: US13702957申请日: 2011-05-30
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公开(公告)号: US09529323B2公开(公告)日: 2016-12-27
- 发明人: Yoshie Shimizu , Yasushi Tanijiri
- 申请人: Yoshie Shimizu , Yasushi Tanijiri
- 申请人地址: JP Tokyo
- 专利权人: KONICA MINOLTA ADVANCED LAYERS, INC.
- 当前专利权人: KONICA MINOLTA ADVANCED LAYERS, INC.
- 当前专利权人地址: JP Tokyo
- 代理机构: Cozen O'Connor
- 优先权: JP2010-129551 20100607; JP2010-149678 20100630
- 国际申请: PCT/JP2011/062333 WO 20110530
- 国际公布: WO2011/155357 WO 20111215
- 主分类号: G02B5/32
- IPC分类号: G02B5/32 ; G03H1/00 ; G02B27/14 ; G02B27/01
摘要:
A video display device is provided with a light source, a display element, and an eyepiece optical system (14). The light source emits light which has at least one emission peak wavelength and has a wavelength width including one emission peak wavelength. The display element modulates the light emitted from the light source and displays video. The eye-piece optical system (14) comprises a volume phase reflective HOE (23) with diffracts and reflects video light from the display element and leads the light to a viewing pupil. An HOE surface (23a) is divided into a plurality of flat surfaces (31, 32, 33) disposed so as to be recessed on the viewing pupil side, and the plurality of flat surfaces (31, 32, 33) are continuous so as to have a common ridge line at a boundary between the flat surfaces adjoining to each other.