US Patent Issued to SEIKO EPSON on Aug. 18 for "Fresnel lens for projector" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,689, issued on Aug. 18, was assigned to SEIKO EPSON Corp. (Tokyo).

"Fresnel lens for projector" was invented by Kana Hatano (Matsumoto, Japan), Eiji Morikuni (Matsumoto, Japan) and Akira Shinbo (Shiojiri, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A projector includes a light source, a Fresnel lens group parallelizing the beam output from the light source, a light-incident-side polarizer transmitting the beam having exited out of the Fresnel lens group, a light modulator modulating the beam having passed through the light-incident-side polarizer to form a projection image, a light-exiting-side polarizer transmitting the beam modulated by t...