Patent ID: 6433760
Filing Date: 2002-08-13
Classification: G01S,G02B,G06F

Abstract:
A head mounted optical eye displaying and tracking apparatus for a user comprising in combination:(c) optical system means for displaying virtual images to a user's eye; (d) means for near infrared tracking at least one of the user's eyes to determine sight direction, the tracking means including LEDs(light emitting diodes) positioned adjacent and uniformally about a perimeter of a lens; the LEDs for beaming light to reflect off a cornea of the user's eye to determine sight direction of the user's eye; and (c) means for mounting the optical system and the tracking system on a user's head, the mounting means including optical components common to both the optical system and the tracking system for operating along a common optical path, the optical components having only a beam splitter positioned in front of the user's eye to be used for the displaying of the virtual image in front of the user's eye and for the near infrared tracking of the user's eye, and the optical components including the lens being common to both the optical system and the tracking means with the lens not being positioned in front of the user's eye.