发明授权
US06570828B2 Optical pickup device having a movable-side member driven with a predetermined inclination
失效
具有以预定倾斜度驱动的可动侧部件的光学拾取装置
- 专利标题: Optical pickup device having a movable-side member driven with a predetermined inclination
- 专利标题(中): 具有以预定倾斜度驱动的可动侧部件的光学拾取装置
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申请号: US09842868申请日: 2001-04-27
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公开(公告)号: US06570828B2公开(公告)日: 2003-05-27
- 发明人: Nobuyasu Kikuchi , Akio Yamakawa , Yusaku Seki , Tetsuo Maeda , Yutaka Sugawara
- 申请人: Nobuyasu Kikuchi , Akio Yamakawa , Yusaku Seki , Tetsuo Maeda , Yutaka Sugawara
- 优先权: JP2000-132489 20000501
- 主分类号: G11B700
- IPC分类号: G11B700
摘要:
A skew of an optical pickup device can be adjusted by a movable-side member itself which holds thereon an objective lens. A holder which holds an objective lens is supported by four spring wires such that it can be moved in the focusing direction and the tracking direction of an optical disk. A center of a magnetic circuit which drives the holder is shifted in the outer peripheral side relative to the optical disk. Elastic force of the spring wires of the inner peripheral side is suppressed by increasing the amount of a gel material bonded to the spring wires located on the inner peripheral side of the optical disk as a damping material as compared with the amount of the gel material bonded to the spring wires located on the outer peripheral side. Thus, the holder can be driven by a predetermined inclination in the focusing direction such that the optical axis of the objective lens becomes substantially perpendicular to the signal recording surface of the optical disk in response to the focus height changed due to the skew of the optical disk.
公开/授权文献
- US20020176348A1 Optical pickup device 公开/授权日:2002-11-28
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