发明授权
US5732060A Optical pickup and optical recording medium reproducing apparatus having
a wire grid unit
失效
具有线栅单元的光学拾取器和光学记录介质再现装置
- 专利标题： Optical pickup and optical recording medium reproducing apparatus having a wire grid unit
- 专利标题（中）： 具有线栅单元的光学拾取器和光学记录介质再现装置
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申请号： US607448申请日： 1996-02-27
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公开(公告)号： US5732060A公开(公告)日： 1998-03-24
- 发明人: Kiyoshi Toyota , Kimihiro Saito , Noriaki Nishi , Hitoshi Tamada , Shuichi Matsumoto
- 申请人： Kiyoshi Toyota , Kimihiro Saito , Noriaki Nishi , Hitoshi Tamada , Shuichi Matsumoto
- 申请人地址： JPX
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX
- 优先权： JPX7-070631 19950304
- 主分类号： G11B11/10
- IPC分类号： G11B11/10 ; G02B5/30 ; G11B7/12 ; G11B7/135 ; G11B11/105 ; G11B7/00
摘要：
An optical pickup and an optical recording medium reproducing apparatus smaller and more reliable than conventional optical pickups and optical recording medium reproducing apparatuses. These are provided with a one-dimensional metal grid which is formed so that the ratio h/d that the pitch "d" and the thickness of metal conductors "h" constituting the wire grid is about 0.1 or more, and also a group of light receiving units which receive light beams split by the one-dimensional metal grid.
公开/授权文献
- US4521162A Pumping system 公开/授权日：1985-06-04
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