LARGE-APERTURE LENS Russian patent published in 2015 - IPC G02B9/60 G02B11/30 

FIELD: physics, optics.

SUBSTANCE: large-aperture lens can be used in devices together with matrix receivers. The lens contains located consistently along the beam path the biconcave lens, the unit of two positive meniscuses facing by cambers to each other, the biconvex lens and the component comprising biconvex and biconcave lenses which are glued together to each other. The single biconvex lens is made from optical glass with the dispersion coefficient greater than 90. Relative aperture of the lens is 1:1.4, the angular field of vision is 88°.

EFFECT: expansion of working area of spectral range from 0,4 up to near infrared (1 mcm) with image quality saving.

3 dwg, 1 tbl