Patent · US Active

Eye tracking system

US11829528B2 · kind B2 · utility

1Cited by

4References

19Claims

0Family size

Assignee

Apple Inc. · US

Inventors

Kathrin Berkner-Cieslicki · Los Altos, US
Se Baek Oh · Millbrae, US
Scott M. DeLapp · San Diego, US
Christopher F. Griffo · Cupertino, US
Bradley C. Steele · San Diego, US
Ting Sun · Taoyuan, TW
Kenichi Saito · Yokohama, JP
Noah D. Bedard · Pacifica, US

Key dates

Filing date	Apr 11, 2022
Grant date	Nov 28, 2023
Priority date	—
Expiry date	Apr 11, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG02B2027/0187
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An eye tracking system for detecting position and movements of a user's eyes in a head-mounted display (HMD). The eye tracking system includes at least one eye tracking camera, an illumination source that emits infrared light towards the user's eyes, and diffraction gratings located at the eyepieces. The diffraction gratings redirect or reflect at least a portion of infrared light reflected off the user's eyes, while allowing visible light to pass. The cameras capture images of the user's eyes from the infrared light that is redirected or reflected by the diffraction gratings.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.