APPARATUS FOR EYE TRACKING
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Accused Products
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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Citations
40 Claims
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1-20. -20. (canceled)
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21. An eye tracker comprising:
- a source, a detector; and
a waveguiding structure comprising a first waveguide containing an input coupler for coupling illumination from said source into a first TIR waveguide path in said first waveguide and a second grating for coupling light out of said first TIR waveguide path onto an eye; and
a second waveguide containing a second grating for coupling light reflected from at least one surface of eye into a second TIR waveguide path in said second waveguide and an output coupler for coupling light out of said second TIR path onto said detector. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
- a source, a detector; and
Specification