Eye tracking apparatus
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United States of America Patent
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Oct 8, 2013
Grant Date -
Mar 8, 2012
app pub date -
May 25, 2010
filing date -
May 27, 2009
priority date (Note) -
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Abstract
An eye tracking apparatus for monitoring the movement of a user's eye, the apparatus including: a display for displaying an image; an eye imaging sensor for monitoring the user's eye and for providing an output indicative of the user's point of regard in the user's field of vision; an optical combiner arranged, in use, in optical communication with the display, the eye imaging sensor and the user's eye; said optical combiner arranged to receive the displayed image from the display, to project said image into the user's field of vision, to receive electromagnetic radiation reflected from the user's eye and to pass said reflected radiation to the eye imaging sensor; wherein the optical combiner is adapted to substantially correct for aberrations in the reflected radiation introduced therein by the optical combiner.
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