Patent ID: 7738195

Claim:
A lens barrel comprising: a plurality of lenses disposed in an outer enclosure; an imaging device that converts image light introduced through the plurality of lenses into an image signal; a first movable unit including a first movable lens and a first lens holder that holds the first movable lens; a second movable unit including a second movable lens and a second lens holder that holds the second movable lens; a first lead screw rotated by a first drive motor; a second lead screw rotated by a second drive motor; a first nut member made of a metal material threadably engaging the first lead screw and connected to the first lens holder, the first nut member moved by the rotation of the first lead screw in the optical axis direction moving the first movable unit in the optical axis direction; and a second nut member made of a metal material threadably engaging the second lead screw and connected to the second lens holder, the second nut member moved by the rotation of the second lead screw in the optical axis direction moving the second movable unit in the optical axis direction; wherein the first lead screw and the second lead screw are disposed to be spaced apart from each other in the optical axis direction, and part of the area over which the first movable unit moves in the optical axis direction overlaps with part of the area over which the second movable unit moves in the optical axis direction.