Patent ID: 9101466
Filing Date: 2015-08-11
Classification: A61F,G02C

Abstract:
1. An ophthalmic lens, comprising: an optic having an anterior surface and a posterior surface disposed about an optical axis, wherein: at least one of the surfaces has a profile characterized by superposition of a base profile and an auxiliary profile, the auxiliary profile comprising a continuous pattern of surface deviations from the base profile, wherein the auxiliary profile is a sinusoidal profile, and wherein the sinusoidal profile is amplitude and frequency modulated with a cosine function operable to shift light to a selected focal plane, wherein the amplitude and frequency modulated profile of the surface having said auxiliary profile is defined by the following relation: wherein, y denotes the continuous pattern of surface deviations from the base profile; a denotes the amplitude of the sinusoidal curve and the diffraction efficiency at different foci; b denotes the periodicity and add power; r denotes a radial distance from an optical axis of the lens; r f(r) is the square root of the pupil radius.