Corona discharge imaging system for outdoor daylight use
US6323491A · kind A · utility
7Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Nov 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/429
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A corona detector for detecting a corona associated with a remote object under outdoor daylight conditions. A selective optical filter filters light from the remote object, wherein the optical filter passes one or more of the corona emission bands centered at wavelengths below approximately 290 nanometers (nm) and rejects radiation at wavelengths above approximately 290 nm. A operatively coupled to the optical filter forms an image of the remote object, the lens having high transmissivity in the ultraviolet spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.