Patents by Inventor Harald Heinzelmann

Harald Heinzelmann 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).

  • Near-field optical microscope for angle resolved measurements
    Patent number: 5739527
    Abstract: The invention relates to a near-field optical microscope, in particular to a scanning near-field optical microscope (SNOM), comprising means for determining the intensity of light emerging from the near-field at a direction differing from the direction perpendicular to the surface of the sample to be examined, preferably emerging at an angle .theta. larger than the critical angle. The invention allows an accurate control of the distance between the probing tip of the SNOM and the sample by using the measured intensity in a feedback loop.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: April 14, 1998
    Assignee: International Business Machines Corporation
    Inventors: Bert Hecht, Harald Heinzelmann, Lukas Novotny, Wolfgang Pohl