DRIVING MECHANISM FOR COMPONENTS OF OPTICAL SYSTEM

摘要

A television camera with two camming cylinders for the focusing of its objective and for the variation of its focal length (zoom effect) has two identical driving units removably attached to its housing, each unit including an electric motor in a prismatic casing with a motor shaft and an electric connector projecting from one end of the casing. Upon emplacement of the casing on the camera housing, the motor shaft engages a transmission shaft leading through a slipping clutch to a respective camming cylinder; at the same time an electric connection is established from the motor to zooming and focusing controls on the camera or on a remote panel. The coupling of the two shafts may be effected by a spring-loaded core slidably but nonrotatably held in an axial bore of the transmission shaft, this core coacting with a complementary slot in a head of the motor shaft.