Patent ID: 6704504
Filing Date: 2004-03-09
Classification: G02B

Abstract:
A zoom lens position control device comprising:a zoom lens having a plurality of zoom steps in which a plurality of steps each comprising a focal length changing region and a focal point adjusting region are continuously arranged; driving means for driving the zoom lens; switching means in which the ON/OFF state is changed due to a shift between the focal length changing region and the focal point adjusting region; detecting means for detecting the ON/OFF state of the switching means; control means for stopping driving the zoom lens in accordance with the detection of a change in the state of the switching means through the detecting means; and initializing means for driving a stopping position of the zoom lens to an initial position in accordance with the detection result of the state of the switching means before focal point adjustment, wherein the initializing means detects the state of the switching means when the zoom lens is stopped and, when the state is changed, moves the stopping position of the zoom lens to the initial position.