Patents by Inventor Ellis I. Bentensky

Ellis I. Bentensky 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 system with improved field mask
    Patent number: 5155517
    Abstract: A real image zooming viewfinder has an internal real image that drifts between two optical components. The field mask is placed at the internal image location and is of a thickness equal to or greater than the drift distance.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: October 13, 1992
    Assignee: Eastman Kodak Company
    Inventors: Ellis I. Bentensky, Paul L. Ruben