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US 2026/0267052 A1Published application
Optical waveguide with metagrating out-coupler
AssigneeMicrosoft Technology Licensing, LLC
InventorsManisha SINGH, Mikhail ERDMANIS
Life of this patent
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Abstract
An optic comprises an optical waveguide and an exit grating configured to out-couple light from the optical waveguide. The optical waveguide has a surface and supports total internal reflection of display light from the surface. The exit grating includes a two-dimensional matrix of replicated, nanometer-scale features distributed parallel to the surface.
Claims20
An optic comprising:
- an optical waveguide having a surface and supporting total internal reflection of display light from the surface;
- and
- an exit grating configured to out-couple light from the optical waveguide, the exit grating including a two-dimensional matrix of replicated, nanometer-scale features distributed parallel to the surface.
A method for making an optic, the method comprising:
- distributing a two-dimensional matrix of replicated, nanometer-scale features on an optical waveguide, parallel to a surface of the optical waveguide,
- wherein the optical waveguide supports total internal reflection of display light from the surface, and wherein the matrix of replicated, nanometer-scale features comprise an exit grating.
A near-eye display device comprising:
- a display projector;
- an expansion optic configured to receive a display image from the display projector and to release an expanded form of the display image, the expansion optic comprising:
- an optical waveguide having a surface and supporting total internal reflection of the display image from the surface;
- and
- an exit grating formed on the optical waveguide, the exit grating including a two-dimensional matrix of replicated, nanometer-scale features distributed parallel to the surface.
2 more elements
Dependencies are inferred from the claim text.