| 摘要 |
PROBLEM TO BE SOLVED: To improve a resonance property of a high frequency band by making phase delay small in a focusing response property. SOLUTION: The objective lens drive device is provided with: a movable part 12 having a lens holder 15 holding an objective lens 14; a fixing part 11 arranged having interval in the tangential direction for the movable part; an elastic holding member 16 holding the movable part movably in the focusing direction and tracking direction for the fixing part, while holding it so as to be tiltable in the tilt direction; a first magnet 21; and a second magnet 22 which is magnetized reversely to the first magnet 21, wherein the lens holder 15 is provided with a tracking coil, a focusing coil, a first tilt coil 51 wound in the focusing direction as the winding direction and generating drive force in the tilt direction, and a second tilt coil 52 wound in the reverse direction and generating drive force in the tilt direction. COPYRIGHT: (C)2006,JPO&NCIPI
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