A lens body tube configured to support at least one lens inside an inner tube such that the at least one lens can be translated along the optical axis direction of the lens body tube includes a cam ring configured to be rotatably supported around the outer circumferential surface of the inner tube, the at least one lens being configured to be translated along the optical axis direction accompanied by the rotation of the cam ring, a plurality of cams provided on the inner circumferential surface of the cam ring, and a plurality of cam followers provided on a lens frame supporting each of the at least one lens. Each of the plurality of cam followers is engaged with a corresponding one of the plurality of cams. The plurality of cams includes at least two protruded cams. The at least two protruded cams are connected with a part of each other.