US Patent Issued to Bridgelux on Sept. 22 for "Color-temperature-tunable lighting devices" (Chinese, American Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,745,677, issued on Sept. 22, was assigned to Bridgelux Inc. (Fremont, Calif.).

"Color-temperature-tunable lighting devices" was invented by Jingqiong Zhang (Xiamen City, China), Yi-Qun Li (Danville, Calif.) and Jungang Zhao (Suzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lighting device comprising: a first LED for generating light of a first chromaticity in a first chromaticity region defined by chromaticity coordinates (0.486, 0.410), (0.509, 0.340), (0.578, 0.405), and (0.537, 0.461); a second LED for generating light of a second chromaticity in a second chromaticity region defined by chromaticity coordinates (0.328, 0.495), (0.342, 0...