发明授权
- 专利标题： Opto-magnetic pick-up device including phase difference correcting means
- 专利标题（中）： 包括相位差校正装置的光磁拾取装置
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申请号： US697910申请日： 1991-05-01
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公开(公告)号： US5249171A公开(公告)日： 1993-09-28
- 发明人: Nobuhide Matsubayashi , Tsuneo Yanagida , Kiichi Kato
- 申请人： Nobuhide Matsubayashi , Tsuneo Yanagida , Kiichi Kato
- 申请人地址： JPX
- 专利权人： Olympus Optical Company Ltd.
- 当前专利权人： Olympus Optical Company Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX59-280856 19841230
- 主分类号： G11B7/135
- IPC分类号： G11B7/135 ; G11B11/105
摘要：
An opto-magnetic pick-up device for use in an information recording and reproducing device is disclosed. The device comprises a phase difference correcting device capable of correcting the phase difference between the linearly polarized component of the reflected light from the recording medium and a polarized component vertical to the linearly polarized component.
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