Patents by Inventor Johan C. Tiemeijer

Johan C. Tiemeijer 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).

  • Electron microscope with brightness/contrast indicator
    Patent number: 4236178
    Abstract: A series of LED elements is included in a scanning electron microscope in order to indicate the brightness and the contrast of a video signal to be recorded. The brightness is indicated by the position of an illuminating LED element, and the contrast is indicated by the number of alternately illuminating LED elements. The use of different colors for the LED elements provides an indication as to how far the signal to be detected may be intensified. The number of the centrally arranged LED elements of the same color preferably corresponds to the number of grey levels of a grey scale generator included in the circuit.
    Type: Grant
    Filed: January 10, 1979
    Date of Patent: November 25, 1980
    Assignee: U.S. Philips Corporation
    Inventor: Johan C. Tiemeijer