Patent ID: 7733577

Claim:
A lens barrel for transferring a lens holding member in a light axis direction via a cam follower engaged with a cam of a cam barrel, the lens barrel comprising: a guide portion of the lens holding member comprising a hole configured to guide the cam follower in a radial direction of the cam barrel; a tabular elastic member of the lens holding member configured to press the cam follower in a radial direction against the cam of the cam barrel by pressing against a flange unit located at an end of the cam follower; and a regulating member connected to the tabular elastic member and configured to limit movement of the cam follower in a direction opposite to the radial pressing direction of the tabular elastic member, the regulating member comprising one or more projections configured to be brought into contact with one or more surfaces of the guide portion when the tabular elastic member is pressed in the direction opposite to the radial pressing direction, thereby regulating movement of the tabular elastic member, wherein, when the tabular elastic member is not pressed in the direction opposite to the radial pressing direction, a clearance is defined between the one or more projections of the regulating member and the guide portion of the lens holding member.