ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,436,385, issued on Oct. 7, was assigned to Jiaxing UPhoton Optoelectronics Technology Co. Ltd. (China).

"Diffractive optical waveguide, design method for diffractive optical waveguide, and display device" was invented by Yuming Song (Tongxiang, China), Lei Sui (Tongxiang, China) and Kehan Tian (Tongxiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A diffractive optical waveguide, a design method for the diffractive optical waveguide, and a display device are provided. The diffractive optical waveguide includes a waveguide substrate and a coupling-in grating. The coupling-in grating includes a plurality of coupling-in grating blocks arranged ran...