Patents by Inventor Charles J. Radford

Charles J. Radford 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).

  • Detection system
    Patent number: 6600509
    Abstract: A detection system (10) utilising projected light (18, 20) viewed through an appropriately placed camera (22) detects variations in surface height (26). The system (10) is arranged to project light onto the surface (16) of interest. A camera with optical axis (24) oriented parallel to and offset from the direction of light projection is used to image the intersection (50, 66) of the projected light (18, 20) with the surface (16). The system (10) observes deflections (64) of this imaged intersection (66) and associates them with the movement of an object (26, 124) through the projected light. The object can range from a surface irregularity (124) to a person (26) walking along a corridor.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: July 29, 2003
    Assignee: Qinetiq Limited
    Inventors: Charles J. Radford, Raymond G. White, Robert W M Smith, John T. Savage, John T. O'Connor, Philip J. Kent