US Patent Issued to Guangzhou Tyrafos Semiconductor Technologies on Aug. 19 for "Surface light source projection device with improved zero-order diffraction" (Taiwanese Inventors)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,941, issued on Aug. 19, was assigned to Guangzhou Tyrafos Semiconductor Technologies Co. Ltd. (Guangzhou, China).

"Surface light source projection device with improved zero-order diffraction" was invented by Jun-Wen Chung (Tainan, Taiwan), Hsu-Wen Fu (Kaohsiung, Taiwan) and Lu-Lang Hsu (Hsinchu County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surface light source projection device with improved zero-order diffraction includes a light exit module and a diffractive optical module. The diffractive optical module has two micron diffraction layers, the micron diffraction layers include a plurality of microstructures. Each of the microstruc...