ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,481, issued on April 29, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Optical system" was invented by John D. Le (Woodbury, Minn.), Timothy L Wong (West St. Paul, Minn.), Timothy J. Nevitt (Red Wing, Minn.) and Zhisheng Yun (Sammamish, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system for displaying first and second images to a viewer is provided. A reflective polarizer is disposed between the second display and the viewer and is oriented obliquely relative to the first display. An optical stack including a partial reflector and a retarder layer is disposed between the reflective polarizer and the second displ...