Corona detector with narrow-band optical filter
US5886344A · kind A · utility
5Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Jul 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A corona detector for detecting a corona associated with a remote object. In one embodiment, the corona detector employs an optical filter having at least one passband centered at a wavelength corresponding with one of the molecular nitrogen emission spectrum second positive emission lines for filtering light from the remote object. A lens 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.