Patent ID: 9360655
Filing Date: 2016-06-07
CPC Classification: G02B,G03B,H04N

Claim Text:
1. A lens barrel comprising: at least one lens; an optical axis of the lens; a first frame including a first restricting portion, the first frame having an approximately cylindrical shape about the optical axis; a second frame including a cam groove, the second frame having an approximately cylindrical shape about the optical axis; a third frame including a first contact portion and a guide portion which restricts the inclination of the third frame with respect to the optical axis; a drive arm including a cam follower, a second restricting portion and a second contact portion, the drive arm having an approximately arc shape or an approximately plate shape and being provided along a portion of a circular cylinder about the optical axis; a guide shaft for guiding the guide portion in a movable manner in an optical axis direction; and a spring, wherein the first restricting portion engages with the second restricting portion, the cam follower engages with the cam groove, and along with the rotation of the second frame relative to the first frame, the drive arm moves approximately parallel to the optical axis, the third frame is biased by the spring so that the first contact portion and the second contact portion are brought into contact with each other, and the third frame moves in the optical axis direction in an interlocking manner with the drive arm in a state where the inclination of the guide portion is restricted by the guide shaft.