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ENVIRONMENTALLY ISOLATED WAVEGUIDE DISPLAY

  • US 20180011324A1
  • Filed: 01/12/2016
  • Published: 01/11/2018
  • Est. Priority Date: 01/12/2015
  • Status: Active Grant
First Claim
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1. A waveguide display, comprising:

  • an input image generator providing image light projected over a field of view;

    a waveguide having first and second external surfaces; and

    at least one grating optically coupled to said waveguide for extracting light from said waveguide towards a viewer of said display,wherein said waveguide has a lateral refractive index variation between said external surfaces that prevents rays propagating within said waveguide from optically interacting with at least one of said external surfaces.

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