The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2001
Filed:
Nov. 17, 1999
Applicant:
Inventor:
Keith W. Forsyth, Philadelphia, PA (US);
Assignee:
Forsyth Electro-Optics, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/42 ; G01J 3/00 ; H01J 4/014 ;
U.S. Cl.
CPC ...
G01J 1/42 ; G01J 3/00 ; H01J 4/014 ;
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.