ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,717,404, issued on Aug. 25, was assigned to Apple Inc. (Cupertino, Calif.).
"Gaze-based calibration patterns for optical systems" was invented by Lionel E Edwin (San Jose, Calif.), Malcolm J Northcott (Santa Cruz, Calif.) and Tom Sengelaub (Oakland, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic device may have projectors, waveguides, and a bridge sensor. The projectors may generate calibration patterns in image light provided to the waveguides. The sensor may generate sensor data from the calibration patterns that is used to detect and correct for optical misalignment. A gaze tracking sensor may generate gaze information using tran...