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:
Dec. 01, 2020
Filed:
Sep. 11, 2019
Facebook Technologies, Llc, Menlo Park, CA (US);
Karol Constantine Hatzilias, Kenmore, WA (US);
Alexander Randon Cope, Seattle, WA (US);
Qi Zhang, Kirkland, WA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
A near-eye optical element, according to aspects herein, includes an illumination layer, an optical combiner layer, and an infrared absorber layer. The illumination layer includes infrared light sources configured to direct narrow-band infrared illumination light to an eyeward side of the near-eye optical element for eye tracking. The optical combiner layer is configured to receive reflected infrared light of the narrow-band infrared illumination light that is reflected off an eye of a user and to direct the reflected infrared light to a camera to generate an eye-tracking image. The infrared absorber layer is disposed between the optical combiner layer and a backside of the near-eye optical element to absorb infrared interference light of the narrow-band.