ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,918, issued on March 11, was assigned to USA as represented by the Secretary of the Army (Washington).

"Method and device for simulating a solar spectrum" was invented by Hajin Kim (Huntsville, Ala.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The application relates to a method of testing an item with a spectrally precise, artificial solar spectrum including wavelengths from 200 nm to 20 microns and it also relates to a solar spectrum simulator capable of producing a light spectrum including wavelengths from 200 nm to 20 microns. The simulator comprises: a) amplitude optimization software; b) a spectrum controller; c) an emitter controller; d) h...