| 摘要 |
PROBLEM TO BE SOLVED: To provide an objective lens driving device with which a tangential tilt while moving is suppressed and a pitching resonance and a yawing resonance are also suppressed. SOLUTION: A magnetic attraction force according to the moving distance of a movable part 8 is generated with a magnetic attraction mechanism 18 composed of an auxiliary magnet 19 and a magnetic body 20 between the movable part 8 and a fixed part 14 at a location closer to a fixed member 9 side rather than the combined position of a rod-shaped elastic supporting member 3 for the moving part 8 in the axial direction of the rod-shaped elastic supporting member 3, and a moment which is oppositely directed to the moment in tangential direction generated by the motion of the moving part 8 in the focus direction F is generated, thus the tilt in the tangential direction is decreased. At the same time, a focusing driving force is also increased by acting the magnetic attraction force.
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