ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,401,779, issued on Aug. 26, was assigned to Distance Technologies Oy (Helsinki).

"Calibrating optical combiner using structured light" was invented by Urho Konttori (Helsinki), Thomas Carlsson (Vantaa, Finland) and Mikko Strandborg (Hangonkyla, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a system implemented in an enclosed space. The system includes light source(s); tracking camera(s); an optical combiner arranged on an optical path of a light field display unit and on an optical path of a real-world light field of a real-world environment; and processor(s) configured to: control the tracking camera(s) to capture image(s) of the ...