Patents by Inventor Wolfgang Theiss

Wolfgang Theiss 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).

  • Publication number: 20180364160
    Abstract: The invention relates to a system for measuring light transmission and/or light reflection properties of a transparent sample sheet, the system comprising a detection assembly and a control unit, wherein the detection assembly comprises an integrating sphere having a sample port, an illumination port, a detection port, an internal light source positioned at the illumination port, and a photodetector coupled to a spectrometer and positioned at the detection port; means to detect radiation coming either directly from the sample port or from the wall of the integrating sphere; an external light source axially aligned with the sample port; means to illuminate with the internal light source or with the external light source; a reference standard, and means to position it at and from the sample port. This system is relatively compact, and can advantageously be used at existing sheet production lines for process and quality control.
    Type: Application
    Filed: December 12, 2016
    Publication date: December 20, 2018
    Inventors: Gerardus ABEN, Wolfgang THEISS
  • Patent number: 7460141
    Abstract: An imaging apparatus for imaging on a recording medium is improved to permit the imaging power to be balanced between various groups of individual radiation sources with a low outlay and high accuracy. Two or more imaging heads that respectively include a multiplicity of individual radiation sources that can be electrically driven individually with light beams directed onto a radiation-sensitive layer of the recording medium. A drive moves the recording medium and the radiation sources relative to one another. A control device controls the power of the light beams of the radiation sources separately for each imaging head. A least one light guide is provided that guides a portion of the light beams emanating from the radiation sources to the receiver surface of a photoelectric sensor, which sensor is connected to the control device.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: December 2, 2008
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Andreas Detmers, Christian Meier, Ingo Ringle, Thomas Rupp, Wolfgang Theiss
  • Publication number: 20060119699
    Abstract: An imaging apparatus for imaging on a recording medium is improved to permit the imaging power to be balanced between various groups of individual radiation sources with a low outlay and high accuracy. Two or more imaging heads that respectively include a multiplicity of individual radiation sources that can be electrically driven individually with light beams directed onto a radiation-sensitive layer of the recording medium. A drive moves the recording medium and the radiation sources relative to one another. A control device controls the power of the light beams of the radiation sources separately for each imaging head. A least one light guide is provided that guides a portion of the light beams emanating from the radiation sources to the receiver surface of a photoelectric sensor, which sensor is connected to the control device.
    Type: Application
    Filed: October 21, 2005
    Publication date: June 8, 2006
    Inventors: Andreas Detmers, Christian Meier, Ingo Ringle, Thomas Rupp, Wolfgang Theiss
  • Patent number: 6413408
    Abstract: An interference filter having a layer with an area consisting of a porous material extending from the surface of the layer to the interior, the dimensions of the porous layer area in a direction normal to the layer surface have different values to provide for varying reflection or, respectively, transmission characteristics.
    Type: Grant
    Filed: June 19, 1999
    Date of Patent: July 2, 2002
    Assignee: Forschungszentrum Jülieh GmbH
    Inventors: Michael Berger, Michael Krüger, Markus Thönissen, Rüdiger Arens-Fischer, Hans Lüth, Walter Lang, Wolfgang Theiss, Stefan Hilbrich
  • Publication number: 20020074239
    Abstract: In an interference filter having a layer with an area consisting of a porous material extending from the surface of the layer to the interior, the dimensions of the porous layer area in a direction normal to the layer surface have different values to provide for varying reflection or, respectively, transmission characteristics.
    Type: Application
    Filed: June 19, 1999
    Publication date: June 20, 2002
    Inventors: MICHAEL BERGER, MICHAEL KRUGER, MARKUS THONISSEN, RUDIGER ARENS-FISCHER, HANS LUTH, WALTER LANG, WOLFGANG THEISS, STEFAN HILBRICH
  • Patent number: 5935410
    Abstract: A process for producing a structured area of porous silicon on a substrate, in which silicon is etched and structured by means of illumination, includes selectively aiming the illumination during or after the formation of the porous silicon directly at a selected area of a p-doped substrate in order to effect etching and structuring of the porous silicon in another area. A device for carrying out the process includes an illuminating system for supporting the etching process and for structuring the porous silicon, in which the illuminating system is selectively aimed during or after the formation of the porous silicon directly at a selected area of p-doped substrate in order to effect etching and structuring of the porous silicon in another area.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: August 10, 1999
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Markus Thonissen, Michael Kruger, Hans Luth, Michael Gotz Berger, Wolfgang Theiss, Gilles Lerondel, Robert Romestain