Patent · US Active

Holographic in-field illuminator

US10816809B2 · kind B2 · utility

9Cited by

3References

20Claims

0Family size

Assignee

Facebook Technologies, LLC · US

Inventors

Ganghun Kim · Midvale, US
Andrew Maimone · Duvall, US
Alexander Jobe Fix · Seattle, US
Robert Dale Cavin · Kirkland, US
Hee Yoon Lee · Bellevue, US
Matthieu Charles Raoul Leibovici · Seattle, US
Brian Wheelwright · Tucson, US
Douglas Robert Lanman · Bellevue, US

Key dates

Filing date	Dec 17, 2018
Grant date	Oct 27, 2020
Priority date	—
Expiry date	Dec 17, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30201
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An eye-tracking system includes a holographic illuminator and a detector. The holographic illuminator includes a light source configured to provide light and a holographic medium optically coupled with the light source. The holographic medium is configured to receive the light provided from the light source and concurrently project a plurality of separate light patterns toward an eye. The detector is configured to detect a reflection of at least a subset of the plurality of separate light patterns, reflected off the eye, for determining a location of a pupil of the eye. Also disclosed is a method for determining a location of a pupil of an eye with the eye-tracking system that includes the holographic illuminator.

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