CPC H04N 13/383 (2018.05) [G02B 27/0081 (2013.01); G02B 27/0093 (2013.01); G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); H04N 9/3129 (2013.01); H04N 13/344 (2018.05); G02B 2027/0123 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01); G02C 11/10 (2013.01)] | 20 Claims |
1. An eye tracking system operable to track movement of an eye of a user, the eye tracking system comprising:
a light scanning projector;
an eyepiece optically coupled to the light scanning projector, wherein the eyepiece includes an inner surface facing the eye and an outer surface opposing the inner surface;
an optical sensor; and
an image processor coupled to the light scanning projector and the optical sensor, wherein the eyepiece comprises a diffractive reflector overlaying the eyepiece, wherein the diffractive reflector is formed as a planar layer laminated to the inner surface of the eyepiece and is operable to reflect, through diffraction, one or more time-varying reflected signals to the optical sensor.
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