INTEROCULAR LENS WITH VARIABLE CORRECTION OF CHROMATIC ABERRATION Russian patent published in 2015 - IPC G02C7/04 A61F2/14 

FIELD: physics.

SUBSTANCE: lens contains an optical filter designed with a possibility of filtration of light with the wave length below 450 nm, the first diffraction structure designed with a possibility of forming a focus for a visible light in the first wavelength range above 550 nm and lowering of longitudinal chromatic aberration down to the level below one dioptre, for incoming visible light in the first wavelength range; the second diffraction structure located from outside of the first diffraction structure in a radial direction and designed with a possibility of forging of focus for a visible light in the second wavelength range between 450 nm and 550 nm and lowering of longitudinal chromatic aberration for incoming visible light in the second wavelength range down to the level below one dioptre with allowing of longitudinal chromatic aberration in the first wavelength range greater in comparison with the first diffraction structure.

EFFECT: decrease of chromatic aberrations.

28 cl, 7 dwg