INFRARED SYSTEM WITH TWO FIELDS OF VISION Russian patent published in 2022 - IPC G02B13/14 G02B15/14 

FIELD: optics.

SUBSTANCE: invention relates to infrared optical systems and can be used in thermal imagers based on cooled heat emission receiving arrays. Claimed infrared system consists of three components located in sequence along the optical axis and a photodetector apparatus. The first fixed component comprises a first positive convex-concave lens, the second surface whereof is aspherical, and a second negative convex-concave lens. The second mobile component comprises a first negative convex-concave lens, the second surface whereof is aspherical, and a second negative concave-convex lens, the first surface whereof is aspherical. The third fixed component comprises a biconvex lens, the second surface whereof is aspherical, a negative convex-concave lens, and a positive concave-convex lens, the second surface whereof is also aspherical. The lenses of the second component are configured to move independently along the optical axis.

EFFECT: increase in the angular resolution of the infrared system in a narrow field of vision with the maintained compact size due to the structural design of the components and mutual arrangement thereof.

1 cl, 3 dwg, 3 tbl