MECHANISM COMPRISED OF ULTRASONIC LEAD SCREW MOTOR

摘要

An optical assembly that contains an optical device movably attached to an apparatus for driving a threaded shaft assembly. The apparatus is comprised of a threaded shaft with an axis of rotation and, engaged therewith, a threaded nut. The assembly contains a device for subjecting the threaded nut to ultrasonic vibrations and thereby causing said the shaft to simultaneously rotate and translate in the axial direction.