INFRARED MIRROR-LENS OBJECTIVE WITH DOUBLE FIELD OF VIEW Russian patent published in 2007 - IPC G02B17/08 G02B15/08 G02B13/14 

FIELD: optics, possible use in various optical systems working in middle and far infrared spectrum of wave lengths, for example, in thermo-vision devices.

SUBSTANCE: infrared mirror-lens objective with double field of view includes lens compensator, made in form of positive meniscus, facing with its convex portion the object with aperture in central part, concave primary Mangin mirror, made in form of negative meniscus, facing the image with convex portion, on convex surface of which mirror cover is applied with aperture in central part, secondary counter mirror, with mirror cover in convex part, facing the image with convex part and mounted with its possible moving in and out of beams route, focal compensator, made in form of position meniscus, facing the object with convex part and mounted in aperture of primary Mangin mirror. In front of lens compensator - position meniscus negative meniscus is positioned, facing the object with concave part, and behind it, in front of counter-mirror - biconvex lens is located in central aperture of lens compensator - positive meniscus.

EFFECT: increased view field angle of narrow field channel of objective while preserving high image quality.

6 cl, 1 dwg