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1. 发明授权

US06570828B2 Optical pickup device having a movable-side member driven with a predetermined inclination 失效
标题翻译：具有以预定倾斜度驱动的可动侧部件的光学拾取装置
公开(公告)号：US06570828B2
公开(公告)日：2003-05-27
申请号：US09842868
申请日：2001-04-27
申请人： Nobuyasu Kikuchi , Akio Yamakawa , Yusaku Seki , Tetsuo Maeda , Yutaka Sugawara
发明人： Nobuyasu Kikuchi , Akio Yamakawa , Yusaku Seki , Tetsuo Maeda , Yutaka Sugawara
IPC分类号： G11B700
CPC分类号： G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0956 , G11B11/10576
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.
摘要翻译：光拾取装置的偏斜可以通过保持物镜的可动侧部件本身进行调节。保持物镜的保持器由四个弹簧线支撑，使得其可以在光盘的聚焦方向和跟踪方向上移动。驱动保持器的磁路的中心相对于光盘在外周侧移位。与凝胶材料的粘合量相比，通过增加作为阻尼材料的位于作为阻尼材料的位于作为阻尼材料的光盘的内周侧的弹簧丝的凝胶材料的量来抑制内周侧的弹簧丝的弹力到位于外周侧的弹簧线。因此，可以在聚焦方向上以预定的倾斜度驱动保持器，使得物镜的光轴响应于由于光学偏斜而偏移的聚焦高度而变得基本上垂直于光盘的信号记录表面磁盘。