ALEXANDRIA, Va., June 2 -- United States Patent no. 12,645,020, issued on June 2, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Optical system and heads up display systems" was invented by Stephan J. Pankratz (Eagan, Minn.) and Nathaniel K. Naismith (Woodbury, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes a display system including a display having first and second display pixels interspersed with each other across the display. The first and second display pixels emit superimposed different respective first and second images polarized along the first direction. The display system includes a patterned retarder having pluralities of first and second retarder...