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Apparatus to detect and measure saccade and pupilary changes

  • US 7,380,938 B2
  • Filed: 03/25/2004
  • Issued: 06/03/2008
  • Est. Priority Date: 03/25/2003
  • Status: Active Grant
First Claim
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1. An eye tracking system comprising:

  • a horizontal line camera configured to capture a horizontal image of at least a portion of the eye and to provide an output signal representing the horizontal image of the eye;

    a vertical line camera configured to capture a vertical image of at least a portion of the eye and to provide an output signal representing the vertical image of the eye;

    a processor, coupled to the horizontal line camera and the vertical line camera to process the signals representing the horizontal and vertical images of the eye to identify and track motion of the eye; and

    a beam splitter configured to reflect a portion of an image of the eye onto one of the horizontal line camera and the vertical line camera and to pass a portion of the image of the eye onto the other one of the horizontal line camera and the vertical line camera.

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