US Patent Issued to 3M Innovative Properties on Feb. 10 for "Optical film, optical stack and display system" (Minnesota Inventors)

ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,923, issued on Feb. 10, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Optical film, optical stack and display system" was invented by Edward J. Kivel (Stillwater, Minn.) and Adam D. Haag (Woodbury, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical stack includes a light control film and an optical film disposed on the light control film. The light control film includes a plurality of visible light transmitting regions separated from each other by one or more visible light absorbing regions. The optical film includes a plurality of microlayers having an F-ratio between about 0.25 to about 0.35 or about 0.65 to about 0...