Eye center of rotation determination with one or more eye tracking cameras

US11868525B2 · kind B2 · utility

Assignee

• Magic Leap, Inc. · US

Inventors

• David Cohen · Nesher, IL
• Elad Joseph · Atlit, IL
• Ron Ferens · Ramat HaSharon, IL
• Eyal Preter · Givat Ela, IL
• Eitan Shmuel Bar-On · Hod HaSharon, IL
• Giora Yahav · Haifa, IL

Key dates

• Filing date: Jul 15, 2020
• Grant date: Jan 9, 2024
• Expiry date: Aug 21, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30201
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A display system can include a head-mounted display configured to project light to an eye of a user to display virtual image content at different amounts of divergence and collimation. The display system can include an inward-facing imaging system possibly comprising a plurality of cameras that image the user's eye and glints for thereon and processing electronics that are in communication with the inward-facing imaging system and that are configured to obtain an estimate of a center of rotation of the user's eye using cornea data derived from the glint images. The display system may render virtual image content with a render camera positioned at the determined position of the center of rotation of said eye.