发明授权
- 专利标题： Transparent screen and projection display apparatus
- 专利标题（中）： 透明屏幕和投影显示设备
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申请号： US10501580申请日： 2002-11-26
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公开(公告)号： US07075718B2公开(公告)日： 2006-07-11
- 发明人: Hiroshi Suzuki , Takao Endo , Shinsuke Shikama , Shuso Wadaka , Kohei Teramoto , Kuniko Kojima , Shigekazu Tsuda
- 申请人： Hiroshi Suzuki , Takao Endo , Shinsuke Shikama , Shuso Wadaka , Kohei Teramoto , Kuniko Kojima , Shigekazu Tsuda
- 申请人地址： JP Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 国际申请： PCT/JP02/12335 WO 20021126
- 国际公布： WO2004/049059 WO 20040610
- 主分类号： G03B27/60
- IPC分类号： G03B27/60 ; G03B21/56 ; G02B27/10 ; G02B3/08
摘要：
A transparent screen includes a refraction/total reflection plate in a form of a Fresnel lens, the refraction/total reflection plate having a sawtooth surface upon which light is incident and another surface via which the light exits, and an image formation/display plate for forming a projection image from the light that exits from the refraction/total reflection plate. Refraction slating surface portions each for refracting incident light towards the other surface of the refraction/total reflection plate, transmission slating surface portions each for making incident light pass therethrough, and total reflection slating surface portions each for reflecting incident light passing through one transmission slating surface portion towards the other surface of the refraction/total reflection plate being formed concentrically on the sawtooth surface of the refraction/total reflection plate.
公开/授权文献
- US20050105177A1 Transparent screen and projection display apparatus 公开/授权日：2005-05-19
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