发明授权
US07553025B2 Projection type image display apparatus, and optical unit and polarization splitting unit each used for the apparatus
有权
投射型图像显示装置，以及用于该装置的光学单元和偏振分离单元
- 专利标题： Projection type image display apparatus, and optical unit and polarization splitting unit each used for the apparatus
- 专利标题（中）： 投射型图像显示装置，以及用于该装置的光学单元和偏振分离单元
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申请号： US11407044申请日： 2006-04-20
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公开(公告)号： US07553025B2公开(公告)日： 2009-06-30
- 发明人: Koji Hirata , Masahiko Yatsu
- 申请人： Koji Hirata , Masahiko Yatsu
- 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： JP2005-123452 20050421
- 主分类号： G03B21/14
- IPC分类号： G03B21/14 ; G03B21/28 ; G02B17/04 ; G02B27/12 ; G02B27/28 ; H04N9/07
摘要：
A polarization splitting section has a structure in that a polarization splitting layer is formed of a light reflecting grid member which is arranged in a grid-shaped pattern on an optically-transparent substrate, and an optically-transparent medium is filled between the grid member and the substrate in contact with the grid member surface and the substrate surface, and the grid member and the filled optically-transparent medium are bonded to the substrate with another adhesive agent or tackiness agent formed of an optically-transparent medium interposed. The polarization splitting layer is partly protruded externally from the surfaces of prism materials.
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