| 摘要 |
PROBLEM TO BE SOLVED: To prevent rolling while performing tracking, in an object lens driving device wherein a movable member holding an object lens is supported by an elastic supporting member and tracking is performed by turning motion. SOLUTION: The movable member 2 is turned in the tracking direction around the turning axis A by the elastic deformation of a turning supporting leaf spring 5 owing to tracking driving force. The object lens 1 is moved in the tracking direction simultaneously with turning of the movable member 2. At this time, although an inverse directional moment of inertia with respect to acceleration in the tracking direction is exerted on the object lens 1 part and a counterweight 11 part in the movable member 2, operating force which cancels the above moment of inertia is generated in the movable member 2 by a first auxiliary driving member 21 and a second auxiliary driving member 22.
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