Patent ID: 11966509

Abstract:
An eye-tracking system (100, 302) comprises light source(s) (102, 202, 306); means (104, 200, 308) for changing direction of light beam (210) emitted by light source(s), wherein said means is to be employed to steer light beam to scan surface of user's eye (214); and light sensor(s) (106, 310) that is to be employed to sense reflected light signals. Said means is to be employed to detect when light beam is incident upon pupil of user's eye, based on variations in at least one parameter of reflected light signals; and steer light beam to be incident upon centre of pupil, wherein light beam is determined to be incident upon centre of pupil when minimum value from amongst values of at least one parameter of reflected light signals. Eye-tracking system further comprises processor(s) (108) configured to determine specific direction at which light beam is incident upon centre of pupil; determine position of pupil, based on specific direction, distance of pupil from light source(s), and position of light source(s); and determine gaze direction of user's eye.