Lens barrel for an automatic focusing system

摘要

The lens barrel according to the present invention is provided with a rotating cylinder that rotates around the optical axis of a photographing lens, a lens holding member that holds a photographing lens and travels in the direction of the optical axis by interlocking with the rotation of the rotating cylinder, a traveling member that travels in the same direction as the lens holding member by interlocking with the rotation of the rotating cylinder, and a force applying mechanism provided between the traveling member and the lens holding member which applies force to the lens holding member in the direction of the optical axis in order to eliminate play in the direction of the optical axis between the lens holding member and the rotating cylinder.