ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,821, issued on April 15, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Optical film device" was invented by Robert M. Jennings (Shoreview, Minn.), Jo A. Etter (Stillwater, Minn.), Susan L. Kent (Shorewood, Minn.), Erin A. McDowell (Afton, Minn.), Timothy L. Wong (West St. Paul, Minn.) and Zhisheng Yun (Sammamish, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A reflective polarizing imaging lens includes at least one optical film having an active area that is curved in two orthogonal directions. Edges of the optical film are arranged to form seams between segments of the optical film in the active area of the reflective polar...