Patents by Inventor Arthur M. Charlesworth

Arthur M. Charlesworth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Distributed coaxial light source producing constant target luminance
    Patent number: 4931866
    Abstract: A luminous source for illluminating targets in e.g. machine vision systems, remote manipulator systems used in outer space, etc., producing nearly constant target luminance as the target maintains various distances from the camera. This is achieved by the luminous source having a dual concentric ring shape of predetermined radii, intensity ratios and radial widths.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: June 5, 1990
    Assignee: Canadian Patents and Development Limited
    Inventors: Arthur M. Charlesworth, Harold F. L. Pinkney