| 摘要 |
PROBLEM TO BE SOLVED: To provide an objective lens drive with simple constitution at a lower cost while suppressing a radial skew occurring during the driving of the optical head of the movable part of a disk drive toward a tracking direction and a focusing direction. SOLUTION: In the relationship between the movable part 20 having a focusing coil 30 and a tracking coil 31 and a fixed part 24 having a magnet 17 disposed opposite to the coils, the coil length of the tracking coil 31 in the focusing direction is regulated more than that of the magnet 17 in the direction. Thereby, torque produced by the focusing coil 30 is canceled by torque produced by the tracking coil 31, and the radial skew is suppressed to the minimum. COPYRIGHT: (C)2003,JPO
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