ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,420, issued on June 24, was assigned to HOYA LENS THAILAND LTD. (Pathumthani, Thailand).
"Eyeglass lens" was invented by Hua Qi (Tokyo), Takako Ishizaki (Tokyo) and Shigetoshi Kono (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4, and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens substrate 2 having a plurality of substrate convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering...