Patent ID: 9739981
Date: 2017-08-22
CPC Classifications: G02B

Claim:
1. A lens barrel comprising: a first lens; a second lens configured to be disposed closer to an image plane than said first lens and retractable outwardly in a radial direction from a center of an optical axis of the lens barrel; a first lens holding member configured to hold the first lens; a second lens holding member configured to hold the second lens, wherein the first lens holding member is disposed on a subject side of said second lens holding member; a moving base member configured to hold said second lens holding member and be movable in a direction of an optical axis in conjunction with said second lens holding member; a drive mechanism configured to cause said second lens holding member to move between a position on an optical axis of a shooting optical system and a position outside the optical axis; and a cam cylinder configured to have a cam groove formed in an inner peripheral portion thereof, said first lens holding member following the cam groove to move in the direction of the optical axis by cam-engaging with said first lens holding member, wherein in a shooting state, said second lens is disposed on the optical axis, wherein in a retracted state, said drive mechanism causes said second lens holding member to retract from the position on the optical axis to the position outside the optical axis while holding said moving base member on the position on the optical axis, and causes said second lens holding member to move to a rear side of said cam cylinder on the position outside the optical axis, and wherein in the retracted state, said second lens holding member is inserted into a cutaway portion formed at an end in the rear side of said cam cylinder, a part of said second lens holding member projecting outwardly further than an outer surface of the lens barrel in a radial direction of the lens barrel.