Patents by Inventor Enrique Pfeng

Enrique Pfeng 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).

  • Diffusion plate having predetermined divergence angle
    Patent number: 4826292
    Abstract: A diffusion plate useful for capturing a real image in an optical system. The plate has a roughened semi-transparent surface for diffusing incident radiation. The surface is comprised of cones etched therein for form a roughness. The cones have a geometry and average center-to-center distances which are precisely predetermined to correspond with either a desired angle of divergence or with a desired diffusion intensity.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: May 2, 1989
    Assignee: Gesellschaft fur Schwerionenforschung mbH
    Inventors: Reimar Spohr, Enrique Pfeng, Dieter Burchner, Poppl Thomas