OPTICAL SCANNING SYSTEM CF INFRA-RED IMAGE Russian patent published in 1997 - IPC

FIELD: optico-mechanical engineering. SUBSTANCE: optical scanning system of infra-red imager has telescopic system, flat scanning mirror, first spherical mirror, first mirror polyhedral scanning drum with external reflection, objective, photodetector, simulator of perfectly black body, second spherical mirror which curvature center matches curvature center of first spherical mirror forming second telescopic system, second mirror drum with internal reflection which number of faces is different from that of first drum put on same axle as first one for rotation about it in same direction. Entrance pupil of telescopic system lies in plane passing through curvature centers of spherical mirrors forming second telescopic system and point of crossing of sight axes of objective in which focal plane sensitive lands of photodetector and scanning drums are located. EFFECT: enhanced operational reliability. 4 dwg