US Patent Issued to Sony Interactive Entertainment on Sept. 30 for "Lens unit and image observing device" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,668, issued on Sept. 30, was assigned to Sony Interactive Entertainment Inc. (Tokyo).

"Lens unit and image observing device" was invented by Yasutoshi Katsuda (Kanagawa, Japan), Manabu Ishioka (Tokyo) and Shotaro Tada (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lens unit includes a first lens and a second lens. The first lens is a Fresnel lens that has a first lens surface having a Fresnel structure on the second lens side, and has a positive refractive power. The second lens is a Fresnel lens that has a second lens surface having a Fresnel structure on the first lens side, and has a positive refractive power."

The patent was filed on ...