| 摘要 |
The present invention is directed to an actuator capable of locking a movable member without additional purpose-made components such as a lock ring, and another actuator used to drive them. The actuator ( 10 ) of the present invention is used to translate a photographing lens and prevent an image from shaking, and the actuator comprises a fixed member ( 12 ), a movable member ( 14 ) holding the photographing lens, a supporting means ( 18 ) movably supporting the movable member, a driving means ( 20, 22 ) translating and rotating the movable member, at least three engaging portions ( 17 ) disposed in the movable member, at least three receiving portions ( 15 ) that are to catch the engaging portions upon rotating the movable member to a predetermined locking position, magnetic attracting means ( 22, 23 ) disposed separately in both the fixed member and the movable member. The magnetic attracting means, when they come close to each other, attract each other and develop a force to rotate the movable member, so that the engaging portions press on the receiving portions to lock the movable member in position.
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