Fabry-perot etalons and tunable filters made using liquid crystal devices as tuning material
US6842217B1 · kind B1 · utility
14Cited by
12References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Aug 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133753
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Fabry-Perot etalons including a layer of liquid crystal between the reflective surfaces are disclosed. Application of an electric field to the liquid crystal layer changes the effective refractive index of the liquid crystal layer, making the device tunable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.