Patent ID: 8144404
Filing Date: 2012-03-27
Classification: G02B

Abstract:
1. A lens barrel comprising: a focus lens; a motor for driving the focus lens; a manual focus ring; a display unit configured to display information of object distance; a display member on which the information of object distance is displayed; a switching member configured to rotationally operate around an optical axis; and an intermediate ring coupled to the switching member and configured to move in an optical axis direction by rotating the switching member to enable coupling and uncoupling the manual focus ring and the display member, wherein the motor drives the focus lens in response to the rotation of the manual focus ring, and when the switching member is rotated to switch to manual focusing, the intermediate ring and the display member are moved to be coupled to the manual focus ring, and with the rotation of the manual focus ring, the information display of the display member becomes visible through the display unit, and when the switching member is rotated to switch to automatic focusing, the intermediate ring and the display member are moved to be uncoupled from the manual focus ring, and the information display of the display member becomes invisible through the display unit.