The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
Nov. 13, 2023
Apple Inc., Cupertino, CA (US);
Lionel E Edwin, San Jose, CA (US);
Malcolm J Northcott, Santa Cruz, CA (US);
Tom Sengelaub, Oakland, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
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 transmitted and reflected infrared light. The gaze information may include a gaze direction, a blind spot location, blink information, and/or saccade information. The projector may place the calibration pattern at a location in a field of view of the image light that is separated from the gaze direction, may place the calibration pattern at the blind spot location, may synchronize the calibration pattern with a blink, and/or may synchronize the calibration pattern with a saccade. This may help to hide the calibration pattern from being viewable or perceivable by a user.