Eye tracking combiner having multiple perspectives

US10852817B1 · kind B1 · utility

Assignee

• Facebook Technologies, LLC · US

Inventors

• Andrew John Ouderkirk · Kirkland, US
• Robert Dale Cavin · Kirkland, US
• Alexander Jobe Fix · Seattle, US
• Ying Geng · Bellevue, US
• Elias Daniel Guestrin · Redmond, US
• Karol Constantine Hatzilias · Kenmore, US
• Robin Sharma · Redmond, US
• Yusufu Njoni Bamaxam Sulai · Bothell, US

Key dates

• Filing date: Nov 2, 2018
• Grant date: Dec 1, 2020
• Expiry date: Nov 23, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V20/20
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Techniques for eye-tracking in a near-eye display system are disclosed. One example of a near-eye display system includes a waveguide-based display substrate transparent to visible light and configured to be placed in front of a user's eye. The waveguide-based display substrate includes a first light deflector configured to direct a first portion of invisible light reflected by the user's eye to a camera to form a first image of the user's eye in a first area of an image frame, and a second light deflector configured to direct a second portion of the invisible light reflected by the user's eye to the camera to form a second image of the user's eye in a second area of the image frame.