ALEXANDRIA, Va., June 17 -- United States Patent no. 12,314,836, issued on May 27, was assigned to TSINGHUA UNIVERSITY (Beijing).
"Optical diffractive processing unit" was invented by Qionghai Dai (Beijing), Tiankuang Zhou (Beijing), Xing Lin (Beijing) and Jiamin Wu (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical diffractive processing unit includes input nodes, output nodes; and neurons. The neurons are connected to the input nodes through optical diffractions. Weights of connection strength of the neurons are determined based on diffractive modulation. Each optoelectronic neuron is configured to perform an optical field summation of weighted inputs and generate a unit output by applying ...