US Patent Issued to United States of America as represented by the Administrator of NASA on March 31 for "Real-time, reference-free background oriented schlieren imaging system" (Virginia Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,891, issued on March 31, was assigned to United States of America as represented by the Administrator of NASA (Washington).

"Real-time, reference-free background oriented schlieren imaging system" was invented by Joshua M. Weisberger (Newport News, Va.) and Brett F. Bathel (Newport News, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A real-time reference free background oriented schlieren system is provided. One embodiment includes a display device capable of generating an image pattern projected onto a retroreflective background. A beam splitter is used to transmit a portion of the projected image pattern towards a reference image sensor and ...