CPC G02B 6/0076 (2013.01) [G02B 6/00 (2013.01); G02B 6/005 (2013.01); G02B 6/0013 (2013.01); G02B 6/0026 (2013.01); G02B 6/0031 (2013.01); G02B 6/0065 (2013.01); G02B 6/29316 (2013.01); G02B 27/0172 (2013.01); G02B 5/1823 (2013.01); G02B 6/1226 (2013.01); G02B 2027/0134 (2013.01)] | 16 Claims |
1. A near-eye display system comprising:
a waveguide configured to propagate and output light that conveys image information;
an optical element disposed on a surface of the waveguide, the optical element configured to redirect the light, wherein the redirecting includes at least one of in-coupling the light into the waveguide or out-coupling the light from the waveguide, the optical element comprising:
a multilevel metasurface comprising:
a plurality of spaced-apart protrusions protruding outward from the surface of the waveguide, the plurality of spaced-apart protrusions having a pitch and formed of a first optically transmissive material; and
an optically transmissive resist between the spaced-apart protrusions, wherein the optically transmissive resist at least partly fills the spaces between the protrusions without extending over the protrusions.
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