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公开(公告)号:US4881216A
公开(公告)日:1989-11-14
申请号:US237652
申请日:1988-08-26
IPC分类号: G11B7/09 , G11B7/135 , G11B11/105
CPC分类号: G11B7/094 , G11B11/10576 , G11B11/10595 , G11B7/13 , G11B7/0901 , G11B7/0909
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.
摘要翻译: 在通过向记录介质施加激光束将信息记录到记录介质上或从记录介质上记录信息的光学存储器件的光学头中,将光束分离器设置在光路中以导致发射的激光束的一部分 从激光装置到光检测器。 根据来自该光检测器的检测值,从伺服误差信号中去除在光学系统中产生的杂散光束的影响。