US Patent Issued to National Institute of Information and Communications Technology on Dec. 16 for "AR optical element, method for manufacturing the same, and AR display device" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,513, issued on Dec. 16, was assigned to National Institute of Information and Communications Technology (Tokyo).

"AR optical element, method for manufacturing the same, and AR display device" was invented by Koki Wakunami (Tokyo), Yasuyuki Ichihashi (Tokyo) and Shunsuke Yoshida (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An AR optical element having high image quality, high efficiency of light utilization, and small-size is provided. The AR optical element has periodic structures of refractive index multiplexed with a predetermined interval and predetermined multiplicity, wherein each of the periodic structures of refractive index has an o...