ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,819, issued on Sept. 16, was assigned to Essilor International (Charenton-le-Pont, France).
"Optical lens" was invented by Eric Gacoin (Charenton-le-Pont, France), Khamphone Sisavanh (Charenton-le-Pont, France) and Jean Stephane (Charenton-le-Pont, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method implemented by a computer for determining surfacing data to obtain a surface of a lens element, the surface of the lens element including: a refraction area having a first curvature; and multiple optical elements placed on at least part of the finished optical surface, each optical element having at least a second curvature."
Th...