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1. (WO2018100241) GAZE-TRACKING SYSTEM AND METHOD OF TRACKING USER'S GAZE

Pub. No.:    WO/2018/100241    International Application No.:    PCT/FI2017/050829
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Tue Nov 28 00:59:59 CET 2017
IPC: G06F 3/01
Applicants: VARJO TECHNOLOGIES OY
Inventors: SAHLSTEN, Oiva
MELAKARI, Klaus
OLLILA, Mikko
MIETTINEN, Ville
Title: GAZE-TRACKING SYSTEM AND METHOD OF TRACKING USER'S GAZE
Abstract:
Disclosed is a gaze-tracking system for use in a head-mounted display apparatus. The gaze-tracking system comprises means for producing structured light comprising a plurality of illuminators for emitting light pulses. Furthermore, the gaze-tracking system comprises at least one camera for capturing an image of reflections of the structured light from the user s eye, wherein the image is representative of a form of the reflections and a position of the reflections on an image plane of the at least one camera. Moreover, the gaze-tracking system comprises a processor configured to control the means for producing the structured light to illuminate the user s eye with the structured light and to control the at least one camera to capture the image of the reflections of the structured light, and to process the captured image to detect a gaze direction of the user.