Patent ID: 7345835

Claim:
A lens barrel comprising: a cylindrical-shaped body tube for housing an inner lens mechanism; a first movable member for holding a first movable lens, moving to an optical axis direction by guiding a first positioning shaft, and being restricted rotation thereof by a first rotation-restricting shaft respectively extending parallel to the optical axis direction; a second movable member disposed along with the first movable lens in the optical axis direction, for holding a second movable lens, moving to the optical axis direction by guiding a second positioning shaft, and being restricted rotation thereof by a second rotation restriction shaft respectively extending parallel to the optical axis direction, the lens barrel comprising: the first positioning shaft and the second rotation-restricting shaft integrally formed to constitute a common guiding shaft extending between both ends of the lens barrel in the optical axis direction; wherein one end of the first rotation-restricting shaft is fixed to a holding section provided in a middle portion of the lens barrel;and wherein a predetermined space is formed in line with an axis of the first rotation-restricting shaft.