| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator using for an optical pickup. SOLUTION: The actuator is furnished with a bobbin whereon an objective lens is mounted, a supporting member fixed on a holder, one end of which is fixed on the side surface of the bobbin and another end is arranged at one side on a base while the bobbin is movable with respect to the base, a pair of magnetic circuits provided so as to confront with the both side surfaces of the bobbin and the base each other, then it has such a feature that the magnetic circuit is furnished with a track coil for driving the bobbin to the tracking direction, a plurality of focus/tilt coils for driving the bobbin to either one direction out of the focus direction and tilt direction including the focus direction, and a magnet having the polarizing structure to drive the bobbin to at least one direction out of the focus direction and tilt direction including the focus direction and also to be drivable to the track direction while being positioned so as to confront with a plurality of focus/tilt coils and track coil. COPYRIGHT: (C)2003,JPO
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