Waveguide display with a small form factor, a large field of view, and a large eyebox
US10585287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2018 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/015
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide display is used for presenting media to a user. The waveguide display includes light source assembly, an output waveguide, and a controller. The light source assembly includes one or more projectors projecting an image light at least along one dimension. The output waveguide includes a waveguide body with two opposite surfaces. The output waveguide includes a first grating receiving an image light propagating along an input wave vector, a second grating, and a third grating positioned opposite to the second grating and outputting an expanded image light with wave vectors matching the input wave vector. The controller controls the scanning of the one or more source assemblies to form a two-dimensional image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.