Patents by Inventor Klaus Hartman

Klaus Hartman 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).

  • Detection of the phase and amplitude of electromagnetic waves
    Patent number: 7238927
    Abstract: The invention relates to a device for detecting electromagnetic waves, especially for also detecting the phase and amplitude of electromagnetic waves, using elements that react sensitively to incident electromagnetic waves. The aim of the invention is to provide a method and a device for detecting the phase and amplitude of electromagnetic waves that are economical as possible and also allow relatively high resolution. To this end, the invention provides that the device has two different pixel types, one pixel type being essentially only sensitive to intensity and the other pixel type being essentially only sensitive to phase. Accordingly, two different pixel types are used in the method, one of which reacts essentially to the intensity of the incoming electromagnetic waves, while the other pixel type is phase-sensitive.
    Type: Grant
    Filed: October 9, 2000
    Date of Patent: July 3, 2007
    Assignee: PMDTechnologies GmbH
    Inventors: Klaus Hartman, Rudolf Schwarte
  • Optical apparatus for producing a light curtain
    Patent number: 4052120
    Abstract: An optical apparatus for producing a light curtain using a fibre optic rod with a sawtooth mirror disposed along the face away from the curtain area.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: October 4, 1977
    Assignee: Erwin Sick Optik-Elektronik
    Inventors: Erwin Sick, Klaus Hartman