发明授权
- 专利标题： Refractive optics and projection display apparatus
- 专利标题（中）： 折射光学和投影显示装置
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申请号： US13078349申请日： 2011-04-01
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公开(公告)号： US08641208B2公开(公告)日： 2014-02-04
- 发明人: Ryuhei Amano , Takashi Ikeda , Kazuhisa Takahashi , Yoshitsugu Kohno , Osamu Nagase
- 申请人： Ryuhei Amano , Takashi Ikeda , Kazuhisa Takahashi , Yoshitsugu Kohno , Osamu Nagase
- 申请人地址： JP Moriguchi-shi JP Hanamaki
- 专利权人： Sanyo Electric Co., Ltd.,Ricoh Optical Industries Co., Ltd.
- 当前专利权人： Sanyo Electric Co., Ltd.,Ricoh Optical Industries Co., Ltd.
- 当前专利权人地址： JP Moriguchi-shi JP Hanamaki
- 代理机构： Mots Law, PLLC
- 代理商 Marvin A. Motsenbocker
- 优先权： JP2008-258972 20081003
- 主分类号： G03B21/20
- IPC分类号： G03B21/20 ; G02B7/02
摘要：
Disclosed are a projection display apparatus and a projection optics provided in the projection display apparatus. The projection optics has a refractive optics and a reflective optics. In the refractive optics, a lens (non-circular lens) provided on a reflective optics side has a non-circular shape forming part of an imaginary circular region whose center is an optical axis center of the refractive optics. In other words, the non-circular lens has a shape of a cut-out portion of an imaginary circular lens having an optical axis center coinciding with the optical axis center of the refractive optics.
公开/授权文献
- US20110292355A1 REFRACTIVE OPTICS AND PROJECTION DISPLAY APPARATUS 公开/授权日：2011-12-01