MUMBAI, India, June 26 -- Intellectual Property India has published a patent application (202617044636 A) filed by Alcon Inc. on April 07, 2026, for Ophthalmic Lens With Reduced Chromatic Aberration.
Inventors include Xu, Zhiguang; Lee, Shinwook; Lu, Wei; Lee, Sangyeol; and Hong, Xin.
The application for the patent was published on June 19, 2026, under issue no. 25/2026.
Abstract: An ophthalmic lens defining an optical axis can include: a plurality of annular regions extending in a radial direction away from the optical axis, including a corresponding plurality of echelettes, wherein the plurality of echelettes forms an echelette profile, wherein each the echelette profile includes a staircase profile, wherein each echelette includes a staircase step, wherein, for each staircase step, there are M phase-shift units arranged vertically, wherein M is an integer, wherein each phase-shift unit has a phase height configured to shift the phase of a reference frequency of light by approximately N*2*p, where N is an integer, and wherein the staircase profile forms an irregular staircase.
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