发明授权
- 专利标题: Projection type screen and image projection system
- 专利标题(中): 投影型屏幕和图像投影系统
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申请号: US11362201申请日: 2006-02-27
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公开(公告)号: US07453637B2公开(公告)日: 2008-11-18
- 发明人: Kazuki Taira , Yuzo Hirayama
- 申请人: Kazuki Taira , Yuzo Hirayama
- 申请人地址: JP Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo
- 代理机构: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- 优先权: JPP2005-081984 20050322
- 主分类号: G03B21/60
- IPC分类号: G03B21/60
摘要:
A projection type screen comprises a reflection surface array and a lenticular sheet. In the reflection surface array, a plurality of reflection surfaces is located along a horizontal direction. Each reflection surface has a mirror reflectivity of which section along the horizontal direction is quadratic curve shape. The lenticular sheet is located at an incident side of a projection light for the reflection surface array. The lenticular sheet has diffusivity along a vertical direction.
公开/授权文献
- US20060215260A1 Projection type screen and image projection system 公开/授权日:2006-09-28