ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,457,832, issued on Oct. 28, was assigned to NICHIA Corp. (Anan, Japan).

"Light emitting device and diffusion member used therein" was invented by Masami Kumano (Tokushima, Japan), Takahiro Kubo (Anan, Japan) and Makiko Iwasa (Anan, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device includes a substrate, a wiring, a light-emitting element configured to emit light having a main wavelength in a range from 500 nm to 560 nm, and a diffusion member. When chromaticity x and chromaticity y of an emission color of the light-emitting device are measured in each of first and second measurement planes in a range in which an angle at the ce...