Optical antenna and wireless optical system using the same
US7310473B2 · kind B2 · utility
4Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | May 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0076
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light concentrator for an optical antenna gradually narrows from the light receiving end to the end in contact with a light detector, and has a refractive index that gradually increases from the first to the second end, to afford a greater acceptance angle for the incoming optical signal. The increase may occur in stages of corresponding layers of the light concentrator, the layers being arranged in order of increase in refractive index from the first end to the second end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.