发明授权
- 专利标题: Optical pickup comprising a heat-insulating material
- 专利标题(中): 光拾取器包括绝热材料
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申请号: US714568申请日: 1996-09-16
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公开(公告)号: US5673152A公开(公告)日: 1997-09-30
- 发明人: Yasuo Yokota , Yukihiro Iwata , Hirotsugu Fusayasu , Hiroto Inoue , Atsufumi Ishizuka , Yukihiro Okada
- 申请人: Yasuo Yokota , Yukihiro Iwata , Hirotsugu Fusayasu , Hiroto Inoue , Atsufumi Ishizuka , Yukihiro Okada
- 申请人地址: JPX
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX7-241071 19950920
- 主分类号: G11B7/09
- IPC分类号: G11B7/09 ; G11B7/135 ; G02B7/02
摘要:
An optical pickup includes an object lens; a lens holder for holding the object lens; a visco-elastic suspender for suspending the lens holder so as to be movable in a focusing direction and a tracking direction; a driving section for driving the lens holder in the focusing direction and the tracking direction, the driving section including a magnet, a yoke and a driving coil provided on the lens holder. The magnet and the yoke form a magnetic circuit. A heat-insulating area is located between the object lens and the driving coil, and the heat-insulating area includes a heat-insulating material which has a thermal conductivity lower than that of the lens holder.
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