Patents Assigned to Forsyth Electro-Optics
  • Corona discharge imaging system for outdoor daylight use
    Patent number: 6323491
    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.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: November 27, 2001
    Assignee: Forsyth Electro-Optics
    Inventor: Keith W. Forsyth
  • Corona detector with narrow-band optical filter
    Patent number: 6150652
    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 in the visible spectrum 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 visible spectrum.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: November 21, 2000
    Assignee: Forsyth Electro-Optics
    Inventor: Keith W. Forsyth
  • Corona detector with narrow-band optical filter
    Patent number: 5886344
    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.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: March 23, 1999
    Assignee: Forsyth Electro-Optics, Inc.
    Inventor: Keith W. Forsyth