发明名称 |
OBJECTIVE LENS DRIVING DEVICE, OPTICAL PICKUP DEVICE, AND OPTICAL DISK DRIVE |
摘要 |
The objective lens driving device of the present invention for an optical pickup device is provided. The device includes first and second objective lenses, and a lens holder for supporting the first and second objective lenses. The lens holder has a first through-hole for passage of first laser beam and a second through-hole for passage of second laser beam. Where a plane defined by a central axis of the first objective lens and a central axis of the second objective lens is a central plane, a plane perpendicular to the central plane and including the central axis of the first objective lens is a first plane, and a plane perpendicular to the central plane and including the central axis of the second objective lens is a second plane; the first through-hole is asymmetrical with respect to the first plane and/or the second through-hole is asymmetrical with respect to the second plane.
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申请公布号 |
US2008084811(A1) |
申请公布日期 |
2008.04.10 |
申请号 |
US20070866441 |
申请日期 |
2007.10.03 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KAJINO OSAMU;TOMITA HIRONORI;WAKABAYASHI KANJI;IEKI KOJI |
分类号 |
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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