HIGH-OUTPUT LENS Russian patent published in 2020 - IPC G02B9/60 

FIELD: optics.

SUBSTANCE: lens can be used in optical systems operating in both visible and infrared spectral ranges, particularly in television cameras operating with a receiving matrix. fast lens consists of four components. First component is made of single biconvex and biconcave lenses, second component is a single biconvex lens, third component is glued from biconvex and biconcave lenses, The fourth component is the single meniscus whose concave surface faces the image and whose radius of curvature of the convex surface is greater than the radius of curvature of the concave surface. Following ratios are met: |R₁| = |R₃|; |R₂| = |R₅| = |R₉|; |R₁| < |R₂|, where Ri is radius of curvature of i-spherical optical surface along beam path.

EFFECT: technical result is increase of relative opening and increase of spectral range of working wavelengths with high quality of image.

1 cl, 1 dwg, 2 tbl