ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,953, issued on Dec. 2, was assigned to KOITO MANUFACTURING Co. LTD. (Tokyo).
"Lighting device" was invented by Ryota Naito (Shizuoka, Japan) and Shuhei Matsuda (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lighting device capable of improving yield by relaxing a selection requirement for turquoise blue and making chromaticity uniform is provided. The lighting device (100) includes a first light-emitting element (12a) that emits first light belonging to a first chromaticity rank, a second light-emitting element (12b) that emits second light belonging to a second chromaticity rank, and a light mixing unit (20) that mixes the first l...