US Patent Issued to TOPPAN on Aug. 19 for "Diffraction sheet and method for manufacturing the same, three-dimensional display device, light beam reproduction device, three-dimensional spatial display system, light beam reproduction method, and program" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,939, issued on Aug. 19, was assigned to TOPPAN Inc. (Taito-ku, Japan).

"Diffraction sheet and method for manufacturing the same, three-dimensional display device, light beam reproduction device, three-dimensional spatial display system, light beam reproduction method, and program" was invented by Tsubasa Suzuki (Taito-ku, Japan), Susumu Takahashi (Taito-ku, Japan) and Hideaki Honma (Taito-ku, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A three-dimensional display device including a diffraction sheet including a transparent substrate, and a diffraction layer having a first diffraction pattern formed in a first array pattern and a second diff...