Patent ID: 8737829
Filing Date: 2014-05-27
Classification: G02B

Abstract:
1. A correction optical device comprising: a fixed member; a correction optical system; a movable member that supports the correction optical system; a driver arranged to cause the fixed member and the movable member to translate or rotate relative to each other in a plane perpendicular to an optical axis of the correction optical system; a rotating member that is supported such that the rotating member is rotatable relative to the fixed member in the plane; a contact member disposed in the fixed member to position the rotating member at a first position; an urging member that urges the rotating member such that the rotating member contacts the contact member; and a retainer arranged to retain the rotating member at a second position, wherein, when the rotating member is retained at the second position by the retainer, a translational movement of the movable member is allowed, wherein, when retention due to the retainer is released and the rotating member moves to the first position, the translational movement of the movable member is prohibited, and wherein the retainer comprises a cam groove and an elastic member, the cam groove being formed in the rotating member, one end of the elastic member being rotatably supported by or secured to the fixed member, and the other end of the elastic member being inserted into the cam groove.