发明公开
- 专利标题: DIRECTIONAL PRIVACY DISPLAY
- 专利标题(中): 定向隐私显示
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申请号: EP15811293.8申请日: 2015-06-26
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公开(公告)号: EP3161550A1公开(公告)日: 2017-05-03
- 发明人: ROBINSON, Michael G. , WOODGATE, Graham J. , HARROLD, Jonathan
- 申请人: RealD Inc.
- 申请人地址: 100 North Crescent Drive, Suite 200 Beverly Hills, CA 90210 US
- 专利权人: RealD Inc.
- 当前专利权人: RealD Inc.
- 当前专利权人地址: 100 North Crescent Drive, Suite 200 Beverly Hills, CA 90210 US
- 代理机构: Merryweather, Colin Henry
- 优先权: US201462017337P 20140626
- 国际公布: WO2015200814 20151230
- 主分类号: G02F1/1335
- IPC分类号: G02F1/1335 ; G02B6/00
摘要:
A directional privacy display may include a waveguide; and an array of light sources and spatial light modulator that operate in a time sequential manner. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows. First and second phases may be temporally multiplexed with respective primary and secondary images and primary and secondary angular illumination distributions. An efficient and bright privacy display may be provided with obscured primary image visibility for off-axis observers.
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