Substrate-guided optical beam expander
US6829095B2 · kind B2 · utility
442Cited by
6References
46Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2003 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Apr 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides an optical device, including a light-transmitting substrate, optical means for coupling light into the substrate by total internal reflection, and a plurality of partially reflecting surfaces carried by the substrate, characterized in that the partially reflecting surfaces are parallel to each other and are not parallel to any of the edges of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.