发明名称 |
Optical disc apparatus and spherical aberration correction controlling apparatus |
摘要 |
An optical disc apparatus is provided, which comprises a lens tilting section for tilting an objective lens to correct coma aberration occurring in a light beam spot focused on an information surface of an optical disc, a spherical aberration correcting section for correcting spherical aberration occurring in a light beam spot focused on the information surface, and a lens tilt-spherical aberration correction control section for controlling the spherical aberration correcting section to change an amount of spherical aberration correction performed by the spherical aberration correcting section depending on a tilt of the objective lens tilted by the lens tilting section.
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申请公布号 |
US7406007(B2) |
申请公布日期 |
2008.07.29 |
申请号 |
US20040931373 |
申请日期 |
2004.09.01 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KUZE YUUICHI;WATANABE KATSUYA;KONDO KENJI;YAMADA SHIN-ICHI |
分类号 |
G11B7/00;G02B13/24;G11B7/09;G11B7/095;G11B7/13;G11B7/135 |
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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