SYSTEM FOR STABILIZATION OF SIGHTING LINE Russian patent published in 1998 - IPC

FIELD: optical beam stabilization systems. SUBSTANCE: device has housing, universal joint, which has external frame which is mounted in bearings of housing, and inner frame which is mounted in bearings of external frame. In addition device has first and second mirrors which are mounted rigidly in inner and external frames respectively, first and second stabilization electric motors which are located along inner and external axes of universal joint respectively, first and second angular velocity transducers, first and second amplifying-correcting units which outputs are connected respectively to inputs of first and second stabilization electric motors angular detector which is located along inner axis of universal joint, relay which has winding and contacts. In addition first and second angular velocity transducers are designed as rotor vibration gyros. First transducer is mounted on inner frame, its first and second sensitivity axes in their initial position are aligned respectively with inner and external axes of universal joint. Second angular velocity transducer is mounted on external frame. Its first sensitivity axis is aligned with external axis of universal joint. First output of first transducer is connected to input of first amplifying-correcting unit. Its second output is connected to output of second amplifying correcting unit through relay. Output of angular detector is connected to relay winding. EFFECT: increased sight angle for inner joint axis, increased reliability of operations for large rotation angles of inner frame with respect to external frame in range of 90 degrees, decreased weight and size. 1 dwg