ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,870, issued on April 15, was assigned to HOYA LENS THAILAND LTD. (Pathumthani, Thailand).
"Eyeglass lens" was invented by Hua Qi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a light flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge at a position A on a retina; and a plurality of defocus regions that are in contact with the base region, wherein the defocus regions each include a first portion and a second portion, a refractive power of the first port...