US Patent Issued to Adeia Guides on Sept. 16 for "Refractive index modulation in diffractive gratings for optical elements of augmented reality and virtual reality displays" (Israeli Inventor)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,755, issued on Sept. 16, was assigned to Adeia Guides Inc. (San Jose, Calif.).

"Refractive index modulation in diffractive gratings for optical elements of augmented reality and virtual reality displays" was invented by Yuval Ofir (Kfar Ha-Oranim, Israel).

According to the abstract* released by the U.S. Patent & Trademark Office: "Head-mounted displays (HMD) or other suitable optical equipment with waveguides comprising an optical element comprising a diffractive grating having a plurality of zones. The plurality of zones may comprise a first zone, a second zone and a third zone. Substantially all of a plurality of structures defining the first zone may comprise a first material...