US Patent Issued to Meta Platforms Technologies on Nov. 11 for "Waveguide with a beam splitter upstream of output region" (Washington, California Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,148, issued on Nov. 11, was assigned to Meta Platforms Technologies LLC (Menlo Park, Calif.).

"Waveguide with a beam splitter upstream of output region" was invented by Babak Amirsolaimani (Redmond, Wash.) and Sihui He (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A waveguide, e.g. a pupil-replicating waveguide, is provided. The waveguide includes a substrate having two outer surfaces, for propagating a beam of light in the substrate by reflecting the beam from the outer surfaces. An output coupler, such as a diffraction grating in the substrate, is configured for diffracting the impinging beam out of the substrate. A beam splitt...