发明名称 |
INTEGRATED OPTICAL DEVICE, OPTICAL PICKUP, AND OPTICAL DISK DEVICE |
摘要 |
<p>A cylindrical lens (39) for generating a focus error signal is provided integrally with an optical member (33) made of a transparent material on a second light path (L2) for return light beam of the optical member (33). Thus, an integrated optical device having a small size, produced at a reduced manufacturing cost, and having an improved reliability is provided.</p> |
申请公布号 |
WO0003390(A1) |
申请公布日期 |
2000.01.20 |
申请号 |
WO1999JP03677 |
申请日期 |
1999.07.07 |
申请人 |
SONY CORPORATION;ASOMA, YOSHITO;TOYOTA, KIYOSHI;NISHI, NORIAKI |
发明人 |
ASOMA, YOSHITO;TOYOTA, KIYOSHI;NISHI, NORIAKI |
分类号 |
G11B7/00;G11B7/12;G11B7/13;G11B7/135;(IPC1-7):G11B7/09;G11B11/10 |
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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