Apparatus for eye tracking
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United States of America Patent
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Oct 4, 2016
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N/A
app pub date -
May 10, 2013
filing date -
May 11, 2012
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Abstract
An eye tracker having a waveguide for propagating illumination light towards an eye and propagating image light reflected from at least one surface of an eye, a light source optically coupled to the waveguide, and a detector optically coupled to the waveguide. Disposed in the waveguide is at least one grating lamina for deflecting the illumination light towards the eye along a first waveguide path and deflecting the image light towards the detector along a second waveguide path.
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