ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,462,430, issued on Nov. 4, was assigned to Beijing Zitiao Network Technology Co. Ltd. (Beijing).
"Head-mounted virtual reality device" was invented by Qiang Wang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a head-mounted virtual reality device, including an eye movement recognition assembly and a processor, where the eye movement recognition assembly includes a light source assembly and a first camera; the light source assembly includes a light source and a diffractive optical element, where the diffractive optical element is provided with a plurality of light-emitting holes, a first pattern is formed by the pl...