Anti-vibration actuator and lens unit and camera furnished with same

摘要

The present invention is an anti-vibration actuator (10) for moving an image stabilizing lens (16), having: a fixed portion (12); a movable portion (14) to which an image stabilizing lens is attached; a movable support member (18) for supporting this movable portion so that it is movable within a plane perpendicular to the optical axis of the image stabilizing lens; drive coils (20) attached to one of either the fixed portion or the movable portion; drive magnets (22) attached to the other of either the fixed portion or the movable portion so as to respectively face these drive coils; and at least one yoke (26) disposed on the side of the drive coils not facing the drive magnets; whereby magnetic force suppressing cutouts (26a) are provided on the yoke in a position overlapping the drive coils in order to suppress magnetic force received from the drive coils.

主权项

1. An anti-vibration actuator for moving an image stabilizing lens, comprising:
a fixed portion; a movable portion to which the image stabilizing lens is attached; a movable portion supporting member that supports the movable portion so that it is movable relative to the fixed portion within a plane perpendicular to the optical axis of the image stabilizing lens; drive coils attached to one of either the fixed portion or the movable portion; drive magnets attached to the other of either the fixed portion or the movable portion so as to respectively face the drive coils; and at least one yoke attached to the side of the drive coil not facing the drive magnet wherein the at least one yoke is made of a material attractable by a magnetic force, and the drive magnet exerts a magnetic force on the at least one yoke; wherein the at least one yoke includes magnetic force suppressing cutout portions formed in a position overlapping the drive coils in order to suppress magnetic force received from the drive magnet.