发明名称 |
Integrated optical component, optical pickup, and optical disc device |
摘要 |
A cylindrical lens 39 for generating focussing error signals is formed as one with a portion of an optical component 33 of a transparent material lying on an optical path L2 that is an optical path of a return light beam from the optical member 33. This configuration assures a small size while reducing the production cost and improving operational reliability.
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申请公布号 |
US6529454(B1) |
申请公布日期 |
2003.03.04 |
申请号 |
US20000508169 |
申请日期 |
2000.03.08 |
申请人 |
SONY CORPORATION |
发明人 |
ASOMA YOSHITO;TOYOTA KIYOSHI;NISHI NORIAKI |
分类号 |
G11B7/00;G11B7/12;G11B7/13;G11B7/135;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/00 |
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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