Video endoscope aperture wheel drive system

摘要

A video endoscope aperture wheel drive system effective to position a predetermined aperture formed in an aperture wheel in an optical path of an image generated by an imaging device viewing an object, while eliminating oscillation of the aperture wheel caused by the rotational stepping of the aperture wheel in either direction in response to movement of a video probe in which an imaging device is positioned. The aperture wheel motor is rotated clockwise or counter-clockwise in response to the proximity of the imaging device relative to the object being viewed.