ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,160, issued on Aug. 11.
"Methods and systems for making an optical functional film" was invented by Roger Wen Yi Hsu (Rancho Cucamonga, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus are provided for eyeglass lens made using a solution casting process. The method may include providing a first soluble polymer solution. The method may include providing a first dye solution including at least one dye. The method may include adding the first dye solution to the first soluble polymer solution to form a first dyed solution. The method may include casting the first dyed solution to form a first film. The method may include prov...