ZOOM SYSTEM DRIVE Russian patent published in 1998 - IPC

FIELD: controlled missile complexes, medicine, geology, industrial engineering, for instance, remote control of complex production processes, for operation of robots, in video engineering and other branches of national economy. SUBSTANCE: zoom system drive uses double-lens zoom lens 2, in which lenses are rigidly secured in the mounts of carriages 5 with axles installed in longitudinal guides 8. Program cam 15 with working surfaces is made in the form of a hollow cylinder with working surfaces in the form of a multiturn internal lobe and installed coaxially with the optical axis. Each axle 6 of carriages 5, 7 carries insert 12 with two axles secured on it mainly at an angle of 90 deg, the axles carry bearings 14 engageable with the working surfaces of program cam 15. EFFECT: improved design. 6 dwg