- 专利标题： Optical disk unit for recording or reproducing information
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申请号： US10100170申请日： 2002-03-19
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公开(公告)号： US06937544B2公开(公告)日： 2005-08-30
- 发明人: Shintaro Takehara , Katsuo Iwata , Maho Kuwahara , Sumitaka Maruyama
- 申请人： Shintaro Takehara , Katsuo Iwata , Maho Kuwahara , Sumitaka Maruyama
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Pillsbury Winthrop Shaw Pittman, LLP
- 优先权： JP2001-304571 20010928
- 主分类号： G11B7/24
- IPC分类号： G11B7/24 ; G11B7/00 ; G11B7/004 ; G11B7/0045 ; G11B7/005 ; G11B7/007 ; G11B7/085 ; G11B7/125 ; G11B7/135 ; G11B11/105
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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