Abstract: A method and apparatus for setting and repeatably and reliably maintaining a desired image resolution. The invention features an optical, image acquiring device and a pair of light sources, the beams from which are caused to converge at a distance from the optical device which provides the desired resolution. Subsequently, positioning the optical device with the point of convergence of the beams on the surface of an object being imaged ensures the desired resolution. In preferred embodiments, the plane yielding the desired resolution is caused to be coincident with the plane of optimal focus.

Abstract: Telerobotic control apparatus for aligning the movable end of a motorized passenger loading bridge to the door in a vehicle enabling the loading and unloading of passengers and freight. The apparatus includes an improvement display and control system. The apparatus includes: sensors, a display, a set of operator command input devices, and a computer to implement the whole system. The display includes video from a camera, a graphic representation of the relative position of the passenger loading bridge, and text and graphic information on the system status. The control system accepts commands from the operator in the operators frame of reference and converts them to the passenger loading bridge's frame of reference for moving the passenger loading bridge.