Patents by Inventor Christoph Schaeffel

Christoph Schaeffel 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).

  • Patent number: 9479040
    Abstract: A high-resolution positioning device has a stator and a rotor, a coil array, arranged on the stator, and having at least three groups of flat coils, wherein each group has at least two single coils and the coil array encloses a free space on the stator, also having permanent magnetically-excited circuits that are situated on, against or in the rotor and form a magnet array which likewise encloses a free space, wherein the free spaces accommodate a position measuring system which has a measuring head having sensors, and an area scale. The device is in the form of a freely suspended, magnetically controlled six-dimensional drive, wherein the measuring head is situated in the coil array free space and the area scale is situated in the magnet array free space, and the rotor is free of drive-related electrical or electronic and, in this regard, live parts.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: October 25, 2016
    Assignee: Physik Instrumente (PI) GmbH & Co. KG
    Inventors: Christoph Schäffel, Michael Katzschmann, Hans-Ulrich Mohr, Carolin Walenda, Rainer Glöβ, Christian Rudolf
  • Publication number: 20140077627
    Abstract: The invention relates to a high-resolution positioning device having a stator and a rotor, a coil array, arranged on the stator, having at least three groups of flat coils, wherein each group has at least two single coils and the coil array encloses a free space on the stator, also having permanent magnetically-excited circuits that are situated on, against or in the rotor and form a magnet array which likewise encloses a free space, wherein the free spaces accommodate a position measuring system which has a measuring head having sensors, and an area scale. According to the invention, the device is in the form of a freely suspended, magnetically controlled six-dimensional drive, wherein the measuring head is situated in the coil array free space and the area scale is situated in the magnet array free space, and the rotor is free of drive-related electrical or electronic and, in this regard, live parts.
    Type: Application
    Filed: April 27, 2012
    Publication date: March 20, 2014
    Applicant: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
    Inventors: Christoph Schäffel, Michael Katzschmann, Hans-Ulrich Mohr, Carolin Walenda, Rainer Glöss, Christian Rudolf
  • Patent number: 7764856
    Abstract: A device for injecting light into an optical wave guide orients a focused light beam using a manipulator. The manipulator includes an adjusting plate with an outer part, an inner part, and two spring arrangements between the outer part and the inner part that are independently adjustable along two co-ordinate axes, each spring arrangement having a parallel spring arrangement guiding parallel to a certain direction, and a preliminary spring mounted in series, a fixing screw, and an axially elastic fixing disk. The inner part can be moved in the X direction and in the Y direction, and the fixing disk can be pressed into the adjusting plate by the fixing screw screwed into the housing part, in the direction of the passage of the beam, such that the adjusted position of the inner part is fixed.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: July 27, 2010
    Assignee: LASOS Lasertechnik GmbH
    Inventors: Volker Bornmann, Christoph Schaeffel, Ludwig Bergann, Ralf Malz
  • Publication number: 20090263085
    Abstract: A device for injecting light into an optical wave guide is provided, via which a focused light beam is oriented by a manipulator. A simple and precise adjustment of maximum injection efficiency during the injection of light into optical wave guides is facilitated, by a manipulator, and the permanent fixing of the adjusted positions obtained during the adjustment of the injection. The device can include: a manipulator having an adjusting plate comprising an outer part, an inner part, and two spring arrangements which are positioned between the outer part and the inner part and can be adjusted independently of each other along two co-ordinate axes, each spring arrangement having a parallel spring arrangement guiding parallel to a certain direction, and a preliminary spring mounted in series; a fixing screw that can be introduced into the fixed housing part by an axial threaded borehole; and an axially elastic fixing disk.
    Type: Application
    Filed: April 20, 2009
    Publication date: October 22, 2009
    Inventors: Volker BORNMANN, Christoph Schaeffel, Ludwig Bergann, Ralf Malz
  • Patent number: 6639225
    Abstract: The invention refers to an arrangement for positioning substrates, in particular for positioning wafers, within a device that is provided for exposure of the substrates and/or for measurement on the substrates by means of radiation under high-vacuum conditions. The following are provided according to the present invention: a retention system (4), displaceable on a linear guidance system (3), for receiving the substrate, the guidance direction of the linear guidance system (3) being oriented parallel or substantially parallel to the Y coordinate of an X, Y, Z spatial coordinate system; drives for limited modification of the inclination of the guidance direction relative to the Y coordinate; drives for limited rotation of the linear guidance system (3), including the retention system (4), about the guidance direction; and drives for parallel displacement of the linear guidance system (3), including the retention system (4), in the direction of the X coordinate, the Y coordinate, and/or the Z coordinate.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: October 28, 2003
    Assignee: Leica Microsystems Lithography GmbH
    Inventors: Ulf-Carsten Kirschstein, Erik Beckert, Andrew Hoffmann, Christoph Schaeffel, Eugen Saffert, Johannes Zentner, Torsten Gramsch
  • Publication number: 20020079461
    Abstract: The invention refers to an arrangement for positioning substrates, in particular for positioning wafers, within a device that is provided for exposure of the substrates and/or for measurement on the substrates by means of radiation under high-vacuum conditions.
    Type: Application
    Filed: September 14, 2001
    Publication date: June 27, 2002
    Inventors: Ulf-Carsten Kirschstein, Erik Beckert, Andrew Hoffmann, Christoph Schaeffel, Eugen Saffert, Johannes Zentner, Torsten Gramsch