US Patent Issued to NIKON on Aug. 11 for "Ocular optical system including fresnel lens surfaces formed on lens surfaces facing an observation object and head-mounted display" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,719, issued on Aug. 11, was assigned to NIKON Corp. (Tokyo).

"Ocular optical system including fresnel lens surfaces formed on lens surfaces facing an observation object and head-mounted display" was invented by Hidetsugu Takagi (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ocular optical system (EL) comprises: a first Fresnel lens (first lens (L1)) having a first Fresnel surface (FSa) formed on the lens surface on the image display unit (11) side; and a second Fresnel lens (second lens (L2)) placed closer to the image display unit (11) than the first Fresnel lens and having a second Fresnel surface (FSb) formed on the lens surfa...