US Patent Issued to 3M Innovative Properties on Dec. 30 for "Optical construction including lens film and multilayer mask" (Minnesota Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,779, issued on Dec. 30, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Optical construction including lens film and multilayer mask" was invented by Neeraj Sharma (Lake Elmo, Minn.), Przemyslaw P. Markowicz (Woodbury, Minn.), Daniel J. Schmidt (Woodbury, Minn.), Timothy J. Reddy (Maplewood, Minn.) and Mark A. Roehrig (Stillwater, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical construction includes a lens film having outermost first and second major surfaces. The first major surface includes a plurality of microlenses. A multilayer mask having an average thickness of less than about 0.5 times an average focal length...