| 摘要 |
[OBJECT OF THE INVENTION] The invention is directed to provide an actuator of simple structure and downsized body, and a lens unit and a camera having the same. [SOLUTION] An actuator ( 1 ) comprises a fixed member ( 2 ), a movable member ( 4 ), a movable member supporting means for supporting the movable member relative to the fixed member, actuating coils ( 6 ) attached to either one of the fixed member and the movable member, actuating magnets ( 8 ) attached to the remaining one of the fixed member and the movable member so as to receive drive force when current flows in the actuating coils, magnetic sensors ( 12 ) disposed inside windings of actuating coils for detecting positions of the actuating magnets, and a control means ( 14 ) for controlling the drive current to flow in each of the actuating coils, in response to a command signal instructing where to move the movable member and position signals detected by the magnetic sensors.
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