Light intercepting device in lens barrel

A light intercepting device in a lens barrel including an annular control unit which has an operation pin which is moved in the circumferential direction by an angular displacement corresponding to an object distance signal generated by an object distance measuring device, and a lens frame which carries a focusing lens group and which is screw-engaged by the control unit to be engaged by said operation pin so as to move together with said operation pin in the circumferential direction, and

• a light intercepting mechanism which is located within the outermost portion of said annular control unit to prevent light from entering said control unit from the center portion of the focusing lens group.

A lens barrel including a lens frame which carries a focusing lens group, and an annular member which is located in front of said lens frame of the focusing lens group, wherein said lens frame and said annular member move relatively in the optical axis direction, and

• a light intercepting device comprising a first light intercepting cylindrical portion which is provided on said annular member to extend to the vicinity of the outer periphery of the focusing lens group, and a second light intercepting cylindrical portion which is provided on said lens frame of said focusing lens group to always at least partially overlap said first light intercepting cylindrical portion of said annular member in the optical axis direction.