US Patent Issued to 3M Innovative Properties on Aug. 4 for "Heads up display systems" (Minnesota Inventor)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,874, issued on Aug. 4, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Heads up display systems" was invented by Stephan J. Pankratz (Eagan, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes an image projector having a light source. A reflective polarizer receives light emitted by the light source at a first incident angle greater than 30 degrees and reflects a portion of the light as a first reflected light. A spatial light modulator receives the first reflected light at a second incident angle greater than 5 degrees and transmits a portion of the first reflected light as a projected image light. A firs...