SUPER FAST LENS Russian patent published in 2023 - IPC G02B9/64 

FIELD: optics.

SUBSTANCE: invention can be used as a photographic lens in mirrorless photographic equipment. The lens contains three components, the first and second of which are separated by an aperture diaphragm. The first component is negative and comprises the first and second positive meniscus lenses, convexly facing the object space, and a negative biconcave lens. The second component is positive and comprises a negative two-glued meniscus lens, concavity facing object space and including biconcave and biconvex lenses, and a single positive meniscus lens facing the object space with its convexity. The third component is positive and comprises a positive two-glued meniscus lens facing the object space with its convexity and consisting of a biconvex and biconcave lens, and a single negative meniscus lens with an aspherical surface on the convex side facing the object space.

EFFECT: reducing the level of distortion in the edge zones of the image and improving the quality of the image across the field of view by changing the shape of the lens surface, including the aspherization of one of them, while maintaining an ultra-high relative aperture and the magnitude of the linear image field.

2 cl, 3 dwg, 2 tbl