HIGH-APERTURE LENS Russian patent published in 2018 - IPC G02B9/34 

FIELD: optics.

SUBSTANCE: invention can be used in optical systems, in particular, working with a receiving television matrix. fast lens consists of four components. First component on the side of the object space is made in the form of a single positive lens with the first surface facing by convexity to the object space, and with a radius of modulus less than the radius of the second surface. Second component is a positive meniscus, the convex side of which faces the object space. Third component is a single negative meniscus, which is turned by a convex surface to the space of objects, and the fourth component is a positive lens, glued along the path of biconvex and biconcave lenses. Refractive index of the biconvex lens material of the glued component is more than the refractive index of the negative lens material of this component.

EFFECT: technical result is an increase in covering power in the space of objects with a high image quality and higher manufacturability.

3 cl, 1 dwg, 3 tbl