发明名称 |
Optical data recording and reproducing apparatus |
摘要 |
An optical data recording and reproducing apparatus including an objective lens for converging light onto an optical disc, and a lens holder which supports the objective lens. The lens holder has a circular opening and a lens holding surface provided on a periphery of the circular opening. One of either the objective lens or the lens holding surface of the lens holder has a symmetrical tapered surface which is adapted to come into contact with the other of either the lens holding surface or objective lens, respectively.
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申请公布号 |
US5257145(A) |
申请公布日期 |
1993.10.26 |
申请号 |
US19920928313 |
申请日期 |
1992.08.12 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
KANAZAWA, HIROSHI;OKUDA, ISAO;SHINOZAKI, SHINPEI;TAKISHIMA, SUGURU |
分类号 |
G11B7/08;G02B7/02;G11B7/135;(IPC1-7):G02B7/02 |
主分类号 |
G11B7/08 |
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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