ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,626, issued on Dec. 23, was assigned to Shinyoptics Corp. (Tainan, Taiwan).
"Head up display device" was invented by Jinn-Chou Yoo (Tainan, Taiwan), Chun-Min Chen (Tainan, Taiwan) and Cheng-Shun Liao (Tainan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A head up display device includes a pancake lens and a picture generation unit. The pancake lens includes a half transmittive concave mirror and a reflective polarizer. The half transmittive concave mirror has a light incident surface and a reflective surface. The reflective polarizer is disposed next to the half transmittive concave mirror at the side of the reflective surface for forming a...