Patent ID: 8928994
Filing Date: 2015-01-06
Classification: G02B,G03B

Abstract:
1. A lens barrel comprising: a first lens unit that is disposed at an object side in an optical system formed with a plurality of lenses and that is changeable between a first state, in which a spacing of the plurality of lenses along an optical axis direction of the optical system is a predetermined spacing, and a second state, in which the spacing of the plurality of lenses is narrower than in the first state; a second lens unit that is disposed at an image side in the optical system relative to the first lens unit and that is capable of changing a focusing state of the optical system by moving along the optical axis of the optical system; a restricting member that restricts the change of the first lens unit from the first state to the second state; a motor that, in a state in which the change to the second state is restricted by the restricting member, moves the second lens unit toward the image side of the optical system, wherein the restricting member is configured to expand and contract and includes a second restricting member that releases the restriction by contracting in association with a completion of the movement of the second lens unit by the motor; a first operation member that, when operated, changes the first lens unit from the first state to the second state; and a second operation member that, when operated in a state in which the change by the first operation member is restricted by the restricting member, starts the motor and moves the second lens unit.