US Patent Issued to Essilor International on Aug. 25 for "Optical article with improved visual comfort" (Singaporean Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,717,172, issued on Aug. 25, was assigned to Essilor International (Charenton-le-Pont, France).

"Optical article with improved visual comfort" was invented by Xingzhao Ding (Singapore) and Yu Liu (Singapore).

According to the abstract* released by the U.S. Patent & Trademark Office: "This optical article has a back face on the side of a wearer's eye, a front face opposite to the back face and, on at least one of the front and back faces, an interferential multilayer coating comprising a stack of at least one layer of high refractive index material having a refractive index higher than 1.55 and at least one layer of low refractive index material having a refractive index of 1.55 or les...