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Architectures and methods for outputting different wavelength light out of waveguides

  • US 10,156,725 B2
  • Filed: 07/21/2017
  • Issued: 12/18/2018
  • Est. Priority Date: 09/29/2014
  • Status: Active Grant
First Claim
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1. A display system comprising:

  • a display comprising a plurality of stacked waveguides, each waveguide comprising a first major surface and a second major surface, wherein the plurality of stacked waveguides comprises;

    a first waveguide;

    a first incoupling optical element configured to incouple incident light into the first waveguide;

    a first wavelength selective filter on the first major surface of the first waveguide;

    a first outcoupling optical element comprising diffractive elements disposed on the first wavelength selective filter, the first outcoupling optical element configured to outcouple the incoupled light at a first plurality of wavelengths transmitted through the first wavelength selective filter;

    a second waveguide over the first outcoupling optical element;

    a second incoupling optical element configured to incouple incident light into the second waveguide;

    a second wavelength selective filter on the first major surface of the second waveguide; and

    a second outcoupling optical element comprising diffractive elements disposed on the second wavelength selective filter, the second outcoupling optical element configured to outcouple the incoupled light at a second plurality of wavelengths transmitted through the second wavelength selective filter.

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