发明申请
- 专利标题: Projection-Type Display Apparatus
- 专利标题(中): 投影型显示装置
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申请号: US11632159申请日: 2006-03-30
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公开(公告)号: US20080036973A1公开(公告)日: 2008-02-14
- 发明人: Kuniko Kojima , Hiroshi Kida
- 申请人: Kuniko Kojima , Hiroshi Kida
- 优先权: JP2005-117647 20050415; JP2005-215801 20050726
- 国际申请: PCT/JP06/06611 WO 20060330
- 主分类号: G03B21/28
- IPC分类号: G03B21/28
摘要:
A projection-type display apparatus includes an illumination optical system (1) including a light source, a reflection-type light valve (2) having an image forming area on a to-be-illuminated surface illuminated by the illumination optical system (1), and a projection optical system (3) that projects an image formed on the image forming area of the reflection-type light valve (2). The projection optical system (1) is shiftable in a direction approximately perpendicular to a projection optical axis. An F-number of the projection optical system (3) is smaller than an F-number of the illumination optical system (1). Between the projection optical system (3) and the reflection-type light valve (2), an opening defining member (12) that defines an incident side opening of the projection optical system (3) is provided, which is not moved by the shifting of the projection optical system (3).
公开/授权文献
- US07695145B2 Projection-type display apparatus 公开/授权日:2010-04-13