发明授权
US07891825B2 Light source unit and projection type image display apparatus having the same
有权
具有这样的光源单元和投影型图像显示装置
- 专利标题： Light source unit and projection type image display apparatus having the same
- 专利标题（中）： 具有这样的光源单元和投影型图像显示装置
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申请号： US12644168申请日： 2009-12-22
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公开(公告)号： US07891825B2公开(公告)日： 2011-02-22
- 发明人: Nobuyuki Kimura , Satoshi Nakayama
- 申请人： Nobuyuki Kimura , Satoshi Nakayama
- 申请人地址： JP Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Antonelli, Terry, Stout & Kraus, LLP.
- 优先权： JP2005-177127 20050617
- 主分类号： F21V7/00
- IPC分类号： F21V7/00 ; F21V7/06 ; F21V7/07 ; F21V7/08 ; F21V7/09 ; F21V7/10 ; F21V7/20 ; F21V13/02
摘要：
First and second reflectors are provided. The first reflector has a function of reflecting a light ray emitted from a light source and directing it toward an image display element and the second reflector has a function of changing the direction of a light ray so as to be reflected by the first reflector which light ray is emitted from the light source and not reflected by the first reflector. An outer periphery shape of the second reflector is changed correspondingly to an effective area of a first array lens 10.
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