Infrared eye-tracking in high ambient light conditions

A method for active eye-tracking comprises pulsing on and off a plurality of infrared optical sources configured to emit infrared light with a narrow spectral linewidth toward an eye of a user, such that a pulse-on duration is less than a duration needed to fully thermalize each optical source. One...

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Bibliographic Details
Main Authors Demandolx, Denis, Bleyer, Michael, Price, Raymond Kirk
Format Patent
LanguageEnglish
Published 29.09.2020
Subjects
CALCULATING
COLORIMETRY
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:A method for active eye-tracking comprises pulsing on and off a plurality of infrared optical sources configured to emit infrared light with a narrow spectral linewidth toward an eye of a user, such that a pulse-on duration is less than a duration needed to fully thermalize each optical source. One or more shuttered optical sensors are configured to receive infrared light reflected off the eye of the user. The shuttered optical sensors are opened for a detection duration based on the pulse-on duration, the shuttered optical sensors. A conformation of the user's eye is indicated based on infrared light received at the shuttered optical sensor during the detection duration.
Bibliography:Application Number: US201916552338