Patent attributes
A gaze-tracking system for use in a head-mounted display apparatus, and a method of tracking a user's gaze, via such a gaze-tracking system. The gaze-tracking system includes illuminators for emitting light pulses to illuminate a user's eye; a camera for capturing an image of reflections of the light pulses from the user's eye, the camera including photo-sensitive elements arranged into a chip, wherein a first surface of the chip bulges inwards in a substantially-curved shape, such that a focal plane of photo-sensitive elements positioned proximally to edges of the chip is farther away than a focal plane of photo-sensitive elements positioned substantially at a center portion of the chip, the first surface facing the user's eye; and a processor being configured to control operations of the illuminators and the camera, and to process the captured image to detect a gaze direction of the user.
