Patent ID: 11953653
Assignee: MAGIC LEAP, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  Y | IPC F  G

Claim 0:
1. An anti-reflective waveguide, comprising:
a planar waveguide substrate having a first index of refraction, the planar waveguide substrate being transparent and having first and second opposing surfaces;
a plurality of diffractive optical elements disposed upon the first surface of the waveguide, the second surface opposing the first surface being flat; and
an anti-reflective coating disposed upon the second surface of the waveguide, wherein the waveguide is planar and configured to propagate light by total internal reflection between the plurality of diffractive optical elements and the anti-reflective coating in a substantially first direction, and outcouple light in a second direction substantially orthogonal to the first direction, wherein the light propagating by total internal reflection comprises an s polarization component and a p polarization component, wherein the anti-reflective coating is configured to reduce phase retardation between the two components such that an angle of incidence of the s component is substantially similar to that of the p component through the waveguide for a select color of the light, the anti-reflective coating being transparent and improving transmission of light therethrough.