OPTICAL SYSTEM FOR ZONE SCANNING Russian patent published in 1998 - IPC

FIELD: development of compact infrared imaging aids to record images for scanning of objects in various spectral ranges. SUBSTANCE: optical system has mirror drum 1 in the form of two truncated polyhedrons 2 with different dihedral angles connected with smaller bases and receivers 3 and 4 sensitive to various spectral ranges of radiation. Two-component objectives, each composed of second components 5 and 6 and corresponding two first components 5-1, 5-2 and 6-1, 6-2 are incorporated in circuit in compliance with the number of receivers. Flat mirrors 7 directing radiation from drum 1 to switching gear 8 in the form of disc with mirrors 9 and slits 10 are installed behind each first component of objectives. Optical axes of pairs of first components of objectives are arranged in plane of axis 11 of rotation relative to entrance pupil 12 at angle of field of vision zone and in perpendicular plane - at an angle of scanning along line of frame. EFFECT: enhanced functional reliability. 4 cl, 2 dwg