ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,211, issued on July 14, was assigned to Essilor International (Charenton-le-Pont, France).

"Optical article with reduced visual fatigue" was invented by Daniel Spiegel (Singapour, Singapore), Yi Gao (Singapour, Singapore), Bjorn Drobe (Singapour, Singapore) and Xingzhao Ding (Singapour, Singapore).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical article includes a front face adapted to receive incident optical beams and a back face through which transmitted optical beams exit to reach an eye, wherein the front face includes an interferential multilayer coating including a stack of dielectric layers. The interferential multilayer coating prov...