US Patent Issued to Lumus on Sept. 23 for "Optical systems including light-guide optical elements with two-dimensional expansion" (Israeli Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,680, issued on Sept. 23, was assigned to Lumus Ltd. (Ness Ziona, Israel).

"Optical systems including light-guide optical elements with two-dimensional expansion" was invented by Eitan Ronen (Rechovot, Israel), Ronen Chriki (Lod, Israel) and Tsion Eisenfeld (Ashkelon, Israel).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system provides two-stage expansion of an input optical aperture for a display based on a light-guide optical element. A first expansion is achieved using two distinct sets of mutually-parallel partially-reflecting surfaces, each set handing a different part of an overall field-of-view presented to the eye. In some cases,...