Patents by Inventor Kenneth Clifford Hudson

Kenneth Clifford Hudson 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).

  • Optical scanner with large depth of focus
    Patent number: 3989348
    Abstract: An optical scanner for focusing an optical beam on a surface, which may be at any of a range of distances, utilizes a plurality of optical plates. The plates, which are of different thicknesses, are selectively insertable in the optical beam path to focus the beam at the surface according to the particular distance thereof.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: November 2, 1976
    Assignee: RCA Corporation
    Inventors: Kenneth Clifford Hudson, Richard Francis Kenville