ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,480, issued on Sept. 23, was assigned to Essilor International (Charenton-le-Pont, France).
"Method and machine for the production of an optical element by additive manufacturing" was invented by Maxime Lecompere (Charenton-le-Pont, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to a method and a device for the production of an optical element from a curable material by using an additive manufacturing technology. According to the disclosure, this method comprises: A-providing a curable material; B-curing said curable material inside sliced outlines (C1) whose geometry are determined according to the geometry of said op...