Patent ID: 7857528
Filing Date: 2010-12-28
Classification: G03B

Abstract:
1. A lens barrel comprising: an imaging optical system; lens barriers configured to move between a barrier closing position at which the lens barriers cover a photographing opening arranged on an optical axis of the imaging optical system and a barrier opening position at which the lens barriers are retreated from the photographing opening; a barrier drive member configured to rotatably support the lens barriers, and rotate around the optical axis so as to move between a driving member closing position at which the lens barriers are positioned at the barrier closing position and a driving member opening position at which the lens barriers are positioned at the barrier opening position; a lens barrel member configured to rotatably hold the barrier drive member between the driving member opening position and the driving member closing position; and contact units configured to be free from the lens barriers when the lens barriers are positioned at the barrier closing position, and to move the lens barriers in a direction of the barrier closing position in contact with the lens barriers when the lens barriers are positioned at the barrier opening position and the barrier drive member is positioned at the drive member closing position.