发明名称 |
Lens actuating system with improved frequency response for optical disk drive |
摘要 |
A lens actuating system for an optical disk drive has an objective lens movably mounted in a movable frame with orthogonal X-, Y-, and Z-axes. A seeking servo moves the frame in the X-direction. A tracking servo moves the objective lens in the X-direction. A focusing servo moves the objective lens in the Z-direction. An optoelectronic sensor detects the relative position of the objective lens and frame in the X-direction, so that the tracking servo can maintain a fixed relative position during track-seeking, or in the Z-direction, to establish a neutral point on the Z-axis for the focusing servo. Force applied by the focusing servo or tracking servo to move the objective lens in one direction can be opposed by an equal and opposite force applied to a driven mass, so that a net zero force is transmitted to the frame.
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申请公布号 |
US5416756(A) |
申请公布日期 |
1995.05.16 |
申请号 |
US19920971233 |
申请日期 |
1992.11.04 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
TAKESHITA, NOBUO;KOBACHI, HIDEAKI;IRIE, MITSURU;KARAKI, MORIHIRO |
分类号 |
G11B7/085;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/085 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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