HIGH-OUTPUT LENS Russian patent published in 2020 - IPC G02B9/60 G02B13/14 

FIELD: optics.

SUBSTANCE: invention relates to the field of optoelectronic equipment and can be used as a lens in digital sighting-observation devices with formation of an image on megapixel CCD or CMOS matrices in day and night operating conditions. High-aperture lens has four components arranged in series on the optical axis, the first component consists of a positive plane-convex and a negative biconcave lens, the second component comprises a positive biconvex lens, third is a positive plane-convex lens, the fourth is a biconvex and biconcave lens splice, and the aperture diaphragm is located on the second surface of the negative lens of the first component.

EFFECT: invention provides high luminosity of the lens, wide spectral range and high image quality.

2 cl, 2 dwg, 2 tbl