Lens barrel and imaging apparatus
AssigneeCanon Kabushiki Kaisha
InventorTakumi Uehara
Life of this patent
Estimating the term…
Abstract
A lens barrel is configured so as to rotatably support lens barriers by a barrier drive member that rotates around an optical axis and the lens barriers rotate and revolve on an axis when the lens barriers are opened and closed. The lens barrel includes wall units provided on an inner circumference portion facing to a space where the lens barriers of the lens barrel member operates, and convexes provided on surfaces of the lens barriers adjacent to the inner circumference portion of the lens barrel member. When the lens barriers are held at a barrier opening position and the barrier drive member is moved to a driving member closing position, the wall units are brought into contact with the convexes and the lens barriers are forcibly closed.
Claims6
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.
Dependencies are inferred from the claim text.