Controllable waveguide for near-eye display applications
US9400395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | Jan 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2223/23
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A near-eye display includes an image generator that generates angularly related beams over a range of angles for forming a virtual image and a waveguide that propagates the angularly related beams over a limited range of angles. An input aperture of the waveguide includes a plurality of controllable components that are selectively operable as diffractive optics for injecting subsets of the angularly related beams into the waveguide. An output aperture of the waveguide includes a plurality of controllable components that selectively operable as diffractive optics for ejecting corresponding subsets of the angularly related beams out of the waveguide toward an eyebox. A controller synchronizes operation of the controllable components of the output aperture with the propagation of different subsets of angularly related beams along the waveguide for ejecting the subsets of angularly related beams out of the waveguide for presenting the virtual image within the eyebox.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.