US Patent Issued to Meta Platforms Technologies on July 1 for "Hot mirror optical cavity and infield illumination" (California Inventor)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,893, issued on July 1, was assigned to Meta Platforms Technologies LLC (Menlo Park, Calif.).

"Hot mirror optical cavity and infield illumination" was invented by Matthew Thomas Hunwardsen (Moorpark, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An illumination optical component for a head mounted device includes an input aperture, an optical substrate, a hot mirror layer, and exit feature voids. The input aperture is configured to accept near-infrared light from a light source. The optical substrate has a refractive index. The hot mirror layer is disposed on the optical substrate. The hot mirror layer is configured to confine the near-infrare...