发明申请
- 专利标题: REFLECTION TYPE SCREEN AND FORWARD PROJECTION SYSTEM
- 专利标题(中): 反射型屏幕和前向投影系统
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申请号: US12091239申请日: 2006-10-24
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公开(公告)号: US20090046361A1公开(公告)日: 2009-02-19
- 发明人: Tatsuo Itoh , Kazuhisa Yamamoto , Tetsuro Mizushima
- 申请人: Tatsuo Itoh , Kazuhisa Yamamoto , Tetsuro Mizushima
- 优先权: JP2005-308158 20051024
- 国际申请: PCT/JP2006/321110 WO 20061024
- 主分类号: G03B21/60
- IPC分类号: G03B21/60
摘要:
There are provided a reflection type screen capable of suppressing effects of external light and obtaining a wide viewing angle with a simple structure, and a forward projection system having the reflection type screen.A reflection type screen 100 has transparent prismatic members 5 arranged parallel to a longitudinal direction of a base 1, between the base 1 of a light absorbing member and a front sheet 2 of a transparent projective layer. Each transparent prismatic member 5 has a transmissive plane 3, and a diffusion-reflection plane 4 formed at a specified angle. The diffusion-reflection plane 4 is formed by arranging a reflection film on one of surfaces of the transparent prismatic member 5. Projection light is diffused and reflected by the diffusion-reflection plane 4, and external light passes through the transmissive plane 3, and is absorbed in the base 1.