Patent ID: 6408139
Filing Date: 2002-06-18
Classification: G02B

Abstract:
A zoom finder for varying magnification of field of view by shifting positions of a first lens and a second lens in a finder optical system comprising:a moving member movable along an optical axis of the finder optical system in association with an operation of varying magnification in a photographing optical system; a first lever pivotally mounted on the moving member; a first cam engaging the first lever to rotate it in association with movement of the moving member; a first supporting member for supporting the first lens movable along the optical axis of the finder optical system with engaging a slot formed in the first lever; a second lever of which one end portion is engaged with the moving member rotatable about the other end portion in association with the movement of the moving member; and a second supporting member for supporting the second lens movable along the optical axis of the finder optical system with engaging a cam slot formed in the second lever; wherein the first lens is shifted by the rotation and the movement along the optical axis of the finder optical system of the first lever and simultaneously the second lens is shifted by the rotation of the second lever, which are caused in association with the movement of the moving member.