Fabry-Perot multiwavelength infrared filter with artificial dielectric
US5793505A · kind A · utility
2Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1986 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Mar 11, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/0026
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A filter is constructed consisting of an optical cavity having at least one element which is a square mesh of highly-conductive metal on a transparent substrate. The mesh openings are defined by relatively narrow conductors of the metal. The mesh feature size, as determined by the sum of the conductor width and square size length, is below the diffraction limit for incoming radiation of interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.