Freeform nanostructured surface for virtual and augmented reality near eye display
US10371951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2016 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Mar 31, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/344
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A near eye display includes at least one of a combiner, a secondary mirror, and a waveguide having a freeform nanostructured surface. The freeform nanostructured surface encompasses a freeform surface, a nanostructured surface or a combination of both the freeform surface and the nanostructured surface. The freeform nanostructured surface can be incorporated into a combiner or a secondary mirror in the near eye display in a compact folded geometry, wherein an anamorphic or freeform optic can be optically intermediate an image source and the freeform nanostructured surface. The nanostructured surface can include a meta-grating operable across the visible spectrum. The meta-grating includes meta-atoms configured to provide a given efficiency at the desired wavelengths in reflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.