Patent ID: 9007705
Filing Date: 2015-04-14
Classification: G02B

Abstract:
1. A lens barrel, comprising: a first frame including a rectilinear guide groove; a second frame including a rotary guide groove and configured to guide the first frame in the optical axis direction with a cam mechanism; and a third frame configured to guide the movement of the first frame, the third frame includes: the first frame is supported by engaging the rectilinear guide portion of the third frame with the rectilinear guide portion of the first frame, so that the first frame moves in the optical axis direction and does not rotate with respect to the third frame, the second frame is supported by engaging the bayonet portion of the third frame with the rotary guide groove of the second frame, so that the second frame rotates relative to the third frame and moves relatively in the optical axis direction, the bayonet portion protrudes to both sides beyond the width of the rectilinear guide portion in the peripheral direction, and is divided by a plurality of slits, and the bayonet portion is supported on the second frame at two or more places including both sides of the rectilinear guide portion in the peripheral direction.