Patent ID: 7884852

Claim:
A lens device comprising: a vibration correcting lens; a movable member configured to hold the vibration correcting lens and to be movable in a direction orthogonal to an optical axis of the lens device; a fixed member configured to prevent the movable member from moving in the optical axis direction; a ball configured to be disposed and supported between the movable member and the fixed member and to be relatively movable with respect to each of the movable member and the fixed member; and a limiting portion configured to limit the movable range of the relative movement of the ball, wherein the size of the movable range limited by the limiting portion in a driving direction of the movable member is set so that the ball does not contact the limiting portion even when the ball rolls from the center of the movable range by half of a maximum movement amount of the movable member, the maximum movement amount being (a) the maximum movement amount when the movable member is mechanically moved or (b) the maximum movement amount when the movable member is moved to correct an image vibration.