ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,789, issued on July 15, was assigned to Qisda Corp. (Taoyuan, Taiwan).

"Illuminating device having two light sources generating different etendues and respective light receivers and display device" was invented by Chih-Shiung Chien (Taoyuan, Taiwan), Ming-Kuen Lin (Taoyuan, Taiwan) and Tsung-Hsun Wu (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an illuminating device, including first and second light sources, first and second light receiving elements, a display module, and a projection module. The first and second light sources are for generating first and second light beam respectively. The first and second light rece...