JP2009180771A5 - - Google Patents

Claims (4)

In a lens barrel having a plurality of lens groups, a fixed barrel, a rear barrel having an outer diameter smaller than that of the fixed barrel, and an information display member provided on the fixed barrel,
The fixed cylinder is an outer cylinder of the lens barrel,
The lens group is held by the front lens group fixed to the front end, a zooming lens group arranged to be movable in the middle, a focusing lens group arranged to be movable in the middle, and the fixed cylinder. A first rear lens group and a second rear lens group held by the rear barrel;
The rear barrel is fixed with a mount for coupling with the camera,
The rear barrel is connected to the fixed barrel so as to be rotatable about the optical axis,
The information display member is provided on an annular plane substantially perpendicular to the optical axis caused by a difference in outer diameter between the fixed barrel and the rear barrel,
The lens barrel, wherein the information display member displays lens information of the lens barrel. 2. The lens barrel according to claim 1, wherein the information display member is on the same plane as the optical axis of the lens barrel and a tripod mount, and is provided at a position facing the photographer in a photographing posture. The lens barrel according to claim 1, wherein the information display member is a liquid crystal display panel. 4. The lens barrel according to claim 1, wherein the lens information is a focal length and / or a shooting distance of the lens barrel.