ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,393,054, issued on Aug. 19, was assigned to Alcon Inc. (Fribourg, Switzerland).
"Multifocal ophthalmic lens with extended depth-of-focus" was invented by Xin Hong (Fort Worth, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ophthalmic lens includes an optic having a first surface and a second surface disposed about an optical axis. At least one of the first surface and the second surface includes a surface profile having a base curvature and a plurality of zones. The base curvature corresponds to a base optical power. The plurality of zones is adapted to produce a plurality of curves corresponding to light energy distribution along the optical a...