Image projection device
US9632317B2 · kind B2 · utility
2Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2015 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Jul 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image projection device, including: at least one waveguide formed in a substrate; and at least one extraction device including a plurality of extraction cells coupled to different areas of the guide, each cell being capable of being electrically activated to extract light from the guide and project this light along a predetermined projection direction, wherein different extraction cells have projection directions with different orientations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.