OPTICAL SYSTEM OF ZONE SCANNING Russian patent published in 1994 - IPC

FIELD: infra-red imaging. SUBSTANCE: optical system of zone scanning has polyhedron mirror drum with group of faces for scanning of frame over zones in vertical plane. These faces are united in frame groups between which there is made hole optically conjugate to mirrors located inside drum, radiation former and lens of receiver. Output pupil of lens of receiver of scanning channel is placed between lens and receiver and output pupil of optical system of channel of recording of average level of signals in frame is put in plane of receiver. EFFECT: increased quality of image thanks to monitoring of average level of background of locality on which observation lenses are positioned in process of scanning. 6 dwg