发明名称 |
Magneto-optical reproducing device with optical system having two reflective elements and providing phase difference cancellation |
摘要 |
A reflected light beam from a magneto-optic disk is reflected by a first and second reflective element toward a signal detecting system. The first reflective element reflects the reflected light from the magneto-optic disk and gives a phase difference into the light beam. The second reflective element reflects the reflected light by the first reflective element toward the signal detecting system, and gives a phase difference which has the same amount as the phase difference caused by the first reflective element, but with the inverse sign thereof.
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申请公布号 |
US5309423(A) |
申请公布日期 |
1994.05.03 |
申请号 |
US19920929535 |
申请日期 |
1992.08.14 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
NOGUCHI, MASATO;OKUDA, ISAO;TAKISHIMA, SUGURU |
分类号 |
G11B11/10;G11B11/105;(IPC1-7):G11B7/00 |
主分类号 |
G11B11/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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