ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,262, issued on March 17, was assigned to Lastek Pty Ltd (Thebarton, Australia).

"Simple Zero-Q-transforming (ZQT) multi-pass cells for optical applications" was invented by Barry Luther-Davies (Tomakin, Australia).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention comprises a Zero-Q-Transforming (ZQT) multi-pass cell (MPC) of a defined type, comprising a pair of concave high-reflectivity mirrors facing each other and separated by a specified distance. The defined cell is of the type such that the circulating beam forms a closed path inside the cell. A means of coupling light in and out of the cell is defined that uses a single mirror in a...