ALEXANDRIA, Va., March 31 -- United States Patent no. 12,591,164, issued on March 31, was assigned to KENT STATE UNIVERSITY (Kent, Ohio) and GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE (Wright-Patterson, Ohio).

"High efficiency tunable beam steering device based on pancharatnam phase" was invented by Brandon Vreeland (Kent, Ohio), Philip Bos (Kent, Ohio) and Andre Van Rynbach (Dayton, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tunable optical beam steering device includes: a first means for providing surface localized in-plane electric fields on a first substrate and also on a second substrate that together define a sandwich structure containing a liquid crysta...