US Patent Issued to Jiangsu Maat Optical Technology on July 14 for "Photochromic lens with bifocal film layer and preparation method for photochromic lens" (Chinese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,332, issued on July 14, was assigned to Jiangsu Maat Optical Technology Co. Ltd. (Zhenjiang, China).

"Photochromic lens with bifocal film layer and preparation method for photochromic lens" was invented by Jun Li (Jiangsu, China) and Jianguo Shang (Jiangsu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a preparation method for a photochromic lens with a bifocal film layer. A photochromic lens with a bifocal film layer includes a substrate, a treatment layer, and a photochromic layer from inside to outside, where the photochromic layer is cured on a surface of the treatment layer by means of ultraviolet irradi...