ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,399,437, issued on Aug. 26, was assigned to Ushio Denki K.K. (Tokyo).

"Debris mitigation device and light source apparatus including the same" was invented by Noritaka Ashizawa (Tokyo) and Hironobu Yabuta (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A debris mitigation device includes a static foil trap. The static foil trap includes an enclosure section, a plurality of foils, an inlet hole, and a pressure-increasing mechanism. The enclosure section includes an incident opening where light emitted from the light source enters, an emission opening where the light is emitted, and an internal space where the light travels. The foils are fixed in a...