ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,580, issued on Nov. 18, was assigned to Essilor International (Charenton-le-pont, France).
"Set of semi-finished lenses with holographic components" was invented by Aude Bouchier (Charenton-le-Pont, France), Samuel Archambeau (Charenton-le-Pont, France) and Karin Scherer (Charenton-le-Pont, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a set of semi-finished lenses and a lens from a semi-finished lens of the set and a set of semi-finished lenses each intended to be used in the manufacturing of a finished lens of determined target power, each semi-finished lens having a base curve chosen among a number N of base cur...