ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,379, issued on Sept. 23, was assigned to Essilor International (Charenton-le-Pont, France).
"Method for manufacturing a lens element" was invented by Caroline Ho (Charenton le Pont, France) and Sebastien Pinault (Longpont sur Orge, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "This relates to a method for manufacturing a lens element including: a refraction area having first curvature; a plurality of optical elements located on at least part of the refraction area, wherein the method includes a step of using an abrasive-filled fluid jet to manufacture the lens element."
The patent was filed on June 16, 2022, under Application No. 18/571,93...