发明授权
- 专利标题: Optical pickup apparatus
- 专利标题(中): 光拾取装置
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申请号: US12390086申请日: 2009-02-20
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公开(公告)号: US07957234B2公开(公告)日: 2011-06-07
- 发明人: Tohru Hotta , Ryoichi Kawasaki
- 申请人: Tohru Hotta , Ryoichi Kawasaki
- 申请人地址: JP Osaka JP Tokyo
- 专利权人: Sanyo Electric Co., Ltd.,Sanyo Optec Design Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.,Sanyo Optec Design Co., Ltd.
- 当前专利权人地址: JP Osaka JP Tokyo
- 代理机构: Fish & Richardson P.C.
- 优先权: JP2008-041169 20080222
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
An optical pickup apparatus comprising: a laser diode; an objective lens configured to focus laser light emitted from the laser diode on a signal recording layer of an optical disc; a first aberration correction element arranged in an optical path between the laser diode and the objective lens; and a second aberration correction element arranged in the optical path between the laser diode and the objective lens and having an aberration correction speed lower than the aberration correction speed of the first aberration correction element, the first aberration correction element and the second aberration correction element being selectively operated according to the required aberration correction speed.
公开/授权文献
- US20090213706A1 OPTICAL PICKUP APPARATUS 公开/授权日:2009-08-27
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