High efficacy waveguide coupler
US7570846B2 · kind B2 · utility
10Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2005 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Jan 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical coupling apparatus for coupling a waveguide to a light source, when the light source emits light at a divergence angle that is larger than the critical angle of the waveguide. The optical coupler comprises a plurality of light-guides, preferably cut from the edge of the waveguide. The light-guides are arranged to connect the waveguide to the light source via a plurality of orientations so that the entire divergence angle is covered within the critical angle of the light-guides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.