发明名称 |
Optical head in an optical memory device |
摘要 |
In an optical head of an optical memory device which records, reproduces or erases information onto or from a recording medium by applying a laser beam to the recording medium, a beam splitter is disposed in an optical path to conduct a portion of the laser beam emitted from a laser device to a light detector. In accordance with a detected value from this light detector, the influence of a stray beam generated in an optical system is removed from a servo error signal.
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申请公布号 |
US4881216(A) |
申请公布日期 |
1989.11.14 |
申请号 |
US19880237652 |
申请日期 |
1988.08.26 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
DEGUCHI, TOSHIHISA;FUJII, YOSHIKAZU;INUI, TETSUYA;OHTA, KENJI;KATOH, SCHOHICHI |
分类号 |
G11B7/09;G11B7/135;G11B11/105 |
主分类号 |
G11B7/09 |
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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