MIRROR-LENS OBJECTIVE Russian patent published in 2022 - IPC G02B17/08 

FIELD: optoelectronic equipment.

SUBSTANCE: invention can be used as a lens for optoelectronic equipment. A mirror-lens objective contains along the beams a main concave hyperboloidal mirror with a central hole, a secondary convex hyperboloidal mirror, a lens system consisting of four separate components located along the beam, the first of which is made in the form of a biconvex lens, the second in the form of a negative meniscus , convexly facing the space of images, the third component is in the form of a biconcave lens, the fourth component is in the form of a positive meniscus, convexly facing the space of objects. The lens system is located in the central hole of the main concave hyperboloidal mirror. The optical powers of all lens elements satisfy the following conditions:

where: - optical power of the mirror system, consisting of the primary and secondary mirrors; - optical power of the lens system; - optical powers of the lenses of the components of the lens system.

EFFECT: increasing the aperture ratio of the lens, increasing the angular field in the space of objects, expanding the spectral range.

1 cl, 2 dwg, 1 tbl