发明名称 |
Apparatus for aligning optical axis of optical pick-up |
摘要 |
An optical axis alignment apparatus of an optical pick-up device for measuring and adjusting a shift amount between a central axis of an objective lens and an optical axis of a laser beam emitted from a light source includes a first photodetector positioned to reciprocate along a central axis of the objective lens, for detecting a shift amount of an optical axis of the laser beam with respect to the central axis of the objective lens and for generating a first detection signal; a second photodetector for detecting a distribution of the laser beam emitted from the laser source and for generating a second detection signal; a beam splitter for splitting the laser beam at a predetermined angle to direct the laser beam to said first and said second photodetectors, respectively; a driving mechanism for reciprocating the first photodetector along the central axis of the objective lens; and mechanism for adjusting the position and the angle of the laser source in dependence upon reception of the first and second detection signals.
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申请公布号 |
US5717666(A) |
申请公布日期 |
1998.02.10 |
申请号 |
US19960628937 |
申请日期 |
1996.04.08 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
PARK, SOO-HAN |
分类号 |
G11B7/095;G11B7/22;(IPC1-7):G11B7/095 |
主分类号 |
G11B7/095 |
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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