HIGH-APERTURE LENS Russian patent published in 2018 - IPC G02B9/60 

FIELD: optics.

SUBSTANCE: high-aperture lens can be used in devices together with matrix receivers. Lens contains a negative meniscus arranged successively along the path of the ray, turned by convexity to the object, light filter in the form of a plane-parallel plate, a biconvex lens, negative meniscus, whose concave surface faces the object, a positive complex lens, glued of a meniscus and a biconvex lens, and a positive complex lens, glued of biconvex and negative lenses.

EFFECT: technical result is an increase in the relative aperture to 1:1 4/10 and the field of view to 91° while maintaining a high image quality in the spectral range from 53/100 μm to 1 μm.

1 cl, 2 dwg, 1 tbl