| 摘要 |
The present invention is directed to an object lens drive device adapted for moving an object lens ( 21 ) in a focus direction of optical axis direction and in a tracking direction perpendicular to the optical axis direction, and comprises a fixed portion ( 10 ) provided in such a manner that a supporting shaft ( 14 ) is projected, a movable portion ( 11 ) comprised of an object lens ( 21 ), and a bobbin ( 16 ) adapted so that the object lens ( 21 ) is attached and a hole ( 18 ) through the supporting shaft is inserted is formed, the bobbin ( 18 ) being supported movably along the supporting shaft and rotatably with the supporting shaft being as center, a drive portion including a magnet portion provided at either one of the fixed portion and the movable portion, and a coil portion ( 22 ) provided at the other portion to move the movable portion along the supporting shaft to thereby move the object lens in the focus direction, and to rotate the bobbin with the supporting shaft being as center to thereby move the object lens in the tracking direction, and supporting means including a magnetic member ( 25 ) for supporting the movable portion in the state inclined with respect to the supporting shaft.
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