发明名称 |
Optical disk unit for recording or reproducing information |
摘要 |
The present invention relates to an optical head device and an optical disk unit using the same. The optical head device includes a relay lens control unit to control at least one of lenses of a relay lens unit based on an output signal outputted from a first optical detector and a power control circuit to control an intensity of a light beam emits from a light source.
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申请公布号 |
US6937544(B2) |
申请公布日期 |
2005.08.30 |
申请号 |
US20020100170 |
申请日期 |
2002.03.19 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
TAKEHARA SHINTARO;IWATA KATSUO;KUWAHARA MAHO;MARUYAMA SUMITAKA |
分类号 |
G11B7/24;G11B7/00;G11B7/004;G11B7/0045;G11B7/005;G11B7/007;G11B7/085;G11B7/125;G11B7/135;G11B11/105;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/24 |
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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