Patents by Inventor Guy A. Michelet

Guy A. Michelet 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).

  • Objective having a variable focal length
    Patent number: 4407567
    Abstract: The optical device comprises at least two optical elements (M.sub.1, M.sub.2 ; L.sub.1, L.sub.2, L.sub.3 ; L.sub.1, M.sub.2) which are of variable focal length and include multilayer structures, at least one source of voltage (47) for the multilayer structures and electronic control means for controlling the voltage applied to the respective multilayer structures of the optical elements of variable focal length as a function of the magnification desired for the optical device.
    Type: Grant
    Filed: April 24, 1979
    Date of Patent: October 4, 1983
    Assignee: Quantel S.A.
    Inventors: Guy A. Michelet, Georges G. Bret