ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,336, issued on Nov. 4, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Achromatic folded optical system" was invented by Timothy L. Wong (West St. Paul, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical lens assembly includes an optical axis and two optical lenses having at least one curved major surface, a partial reflector disposed on a first major surface of the lens assembly, and a reflective polarizer disposed on a second major surface. For each of first and second visible wavelengths, and for unpolarized collimated light incident on the assembly from the viewer-side, the assembly focuses the incident light on the ...