ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,379,520, issued on Aug. 5, was assigned to LaserMotive Inc. (Kent, Wash.).
"Light curtain safety system" was invented by Jordin T. Kare (San Jose, Calif.), Thomas J. Nugent (Bellevue, Wash.), David Bashford (Kent, Wash.), Carsten Casey Erickson (Kent, Wash.) and Thomas W. Bashford (Renton, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system to detect obstacles includes a power beam transmission circuit, a power beam reception circuit arranged to receive a power beam from the power beam transmission circuit, an emitter module, and a detector module arranged to distinguish between a first characteristic and a second characteristic. The emitter mo...