ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,599, issued on Jan. 13, was assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES (Paris).

"Device for distributing light based on diffraction gratings" was invented by Cyrielle Monpeurt (Grenoble, France) and Salim Boutami (Grenoble, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light distributing device configured for, in use, distributing, over a scene to illuminate light rays that come from an auxiliary light source, and which comprises: a planar waveguide, with a core layer disposed between the two cladding layers; and an extraction set, located in the planar waveguide, and constituted by a plurality of diffractio...