ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,754,352, issued on Oct. 6, was assigned to DEXERIALS Corp. (Tochigi, Japan).
"Diffuser plate, display device, projecting device, and lighting device" was invented by Mitsuo Arima (Tochigi, Japan), Masayuki Ishiwata (Tochigi, Japan) and Shunsuke Kanasugi (Tochigi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To reduce unevenness in a luminance distribution in two directions of microlenses disposed in a form of a rectangular grid to improve uniformity of light distribution. Provided is a diffuser plate of a microlens array type including a base material, and a microlens array composed of a plurality of microlenses disposed on an X-Y plane on at lea...