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:
May. 28, 2019
Filed:
Jan. 20, 2017
Thalmic Labs Inc., Kitchener, CA;
Mélodie Vidal, Kitchener, CA;
Jake Chapeskie, Kitchener, CA;
North Inc., Kitchener, ON, CA;
Abstract
Systems, devices, and methods for proximity-based eye tracking are described. A proximity sensor positioned near the eye monitors the distance to the eye, which varies depending on the position of the corneal bulge. The corneal bulge protrudes outward from the surface of the eye and so, all other things being equal, a static proximity sensor detects a shorter distance to the eye when the cornea is directed towards the proximity sensor and a longer distance to the eye when the cornea is directed away from the proximity sensor. Optical proximity sensors that operate with infrared light are used as a non-limiting example of proximity sensors. Multiple proximity sensors may be used and processed simultaneously in order to provide a more accurate/precise determination of the gaze direction of the user. Implementations in which proximity-based eye trackers are incorporated into wearable heads-up displays are described.