Patents Assigned to Fraunhofer-Gesellschaft zur Foerderung der angewan
  • Publication number: 20110179873
    Abstract: An apparatus provides for the non-destructive testing of samples. The samples can in this respect also be formed from critical materials which change their properties during manufacture, for example on a hardening or solidification. In an apparatus in accordance with the invention, at least one ultrasonic pressure wave transducer is arranged at a forward cell. The forward cell is filled with a liquid and is placed with an open side at one side onto a surface (A) of a conversion prism, in the form of a solid body, so that the liquid and the surface (A) are in touching contact. The conversion prism is placed with a further surface (B) onto a surface of a sample to be tested. At least one ultrasonic pressure wave transducer can be positioned or is positioned at the forward cell at at least two positions (T1, T2) so that the positions are arranged at an equal spacing from the center of the surface (A) of the conversion prism, said surface being placed onto the sample.
    Type: Application
    Filed: September 1, 2009
    Publication date: July 28, 2011
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN FORSCHUNG E.V.
    Inventors: Frank Schubert, Abdelmalek Bouhadjera
  • Publication number: 20110083740
    Abstract: The invention relates to a concentrator arrangement for solar radiation which has a beam splitter for deflecting solar radiation by means of total reflection. Furthermore, the invention relates to a device for concentrating and converting solar energy which has such a concentrator and at least one device for the conversion of solar energy. Such devices for the conversion of solar energy are for example solar cells, solar modules or thermal solar collectors. The concentrators according to the invention are used for concentrating solar radiation just as in sun protection panels.
    Type: Application
    Filed: March 2, 2009
    Publication date: April 14, 2011
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN
    Inventor: Harry Wirth
  • Publication number: 20100307812
    Abstract: The invention relates to a transparent plastic film for screening electromagnetic waves, comprising a transparent film substrate and a layer system that has at least one silver layer, as well as a method for producing a plastic film of this type, wherein the silver layer is embedded between two niobium oxide layers.
    Type: Application
    Filed: October 16, 2008
    Publication date: December 9, 2010
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN
    Inventors: Matthias Fahland, Tobias Vogt, Nicolas Schiller, Waldemar Schoenberger, Steffen Guenther, John Fahlteich
  • Publication number: 20100282598
    Abstract: The invention relates to the control of a reactive high-power pulsed sputter process. The invention particularly relates to a method for controlling a process of the aforementioned kind, wherein a controlled variable is measured and an adjustable variable is modified based on the measured controlled variable in order to adjust the controlled variable to a predetermined setting value. The method according to the invention is characterised by modifying the discharge capacity by varying the pulse frequency of the discharge.
    Type: Application
    Filed: June 20, 2007
    Publication date: November 11, 2010
    Applicant: Fraunhofer-Gesellschaft Zur Foerderung Der Angewan dten Forschung E.V.
    Inventors: Florian Ruske, Volker Sittinger, Bernd Szyszka
  • Publication number: 20100176103
    Abstract: A method and device for the material removal to a predetermined removal depth from a workpiece employs a laser beam consisting of one or more sub-beams, each of the latter having a defined beam axis. The axis of the laser beam or the individual axes of the sub-beams are guided along a removal line at a predetermined travelling speed and the laser beam has a predetermined spatial energy flow density that defines a Poynting vector S with a value I0f(x) and a direction s, the spatial energy flow density creating a removal face with an apex formed by the leading part of the removal face in the removal direction and the face, creating a removal edge. With this method the respective incident angles ? of the removal face, formed by the normal vectors n at the removal face, and the directions of the Poynting vectors are set in such a way that they do not exceed a maximum value ?max in a predefined region around the apex of the removal face.
    Type: Application
    Filed: May 23, 2008
    Publication date: July 15, 2010
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN
    Inventors: Wolfgang Schulz, Dirk Petring, Frank Schneider, Markus Niessen
  • Publication number: 20100091510
    Abstract: The invention relates to a headlight for a motor vehicle with a sealing disk, which as a component of a housing seals an interior enclosed by the housing from the environment, wherein a layer system, comprising a lower layer, followed by a metal layer and an upper layer, is deposited on the side of the sealing disk directed towards the interior by means of a vacuum method, wherein the lower layer and/or the upper layer is deposited either as a nitride of the elements Al or Si or as an oxide or a mixed oxide of the elements Si, Ti Al, Zn, Sn, In, Nb, Zr, or Ta.
    Type: Application
    Filed: April 18, 2008
    Publication date: April 15, 2010
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN FORSCHUNG E.V.
    Inventors: Roman Nyderle, Thomas Preussner, Torsten Kopte, Volker Kirchhoff, Sabine Dreihoefer, Ralf Rochotzki, Dieter Jestel, Matthias Kalwa, Klaus-Dieter Steinborn, Michael Falz, Bernd Buecken, Barbara Gebhardt
  • Publication number: 20100040276
    Abstract: A method for determining a cell contour of a cell having a cell nucleus and a cytoplasm in an image of the cell includes determining nucleus candidate pixels belonging to the nucleus. Further, the method comprises determining a pixel within the area formed by the nucleus candidate pixels for obtaining a central nucleus candidate pixel, determining a first edge candidate pixel as a pixel on a predetermined path leading away from the central nucleus candidate pixel by determining a change from a first section to a second section of a color space, and finding edge candidate pixels leading away from the first edge candidate pixel forming a boundary surrounding the cell, via a path-finding algorithm tending to prefer smaller path lengths and paths through pixels in the second section of the color space.
    Type: Application
    Filed: March 19, 2008
    Publication date: February 18, 2010
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewan dten Forschung e.V.
    Inventors: Thorsten Zerfass, Thomas Rehn, Thomas Wittenberg
  • Publication number: 20100030563
    Abstract: An apparatus for generating an ambient signal from an audio signal includes a compressor for lossy compression of a representation of the audio signal so as to obtain a compressed representation of the audio signal describing a compressed audio signal. The apparatus for generating the ambient signal further includes a calculator for calculating a difference between the compressed representation of the audio signal and the representation of the audio signal so as to obtain a discrimination representation. The apparatus further includes a provider for providing the ambient signal using the discrimination representation. An apparatus for deriving a multi-channel audio signal from an audio signal includes an apparatus for generating an ambient signal from an audio signal, an apparatus for providing the audio signal as a front-loudspeaker signal and an apparatus for providing the ambient signal as a back-loudspeaker signal.
    Type: Application
    Filed: October 23, 2007
    Publication date: February 4, 2010
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewan
    Inventors: Christian Uhle, Juergen Herre, Andreas Walther, Oliver Hellmuth, Christiaan Janssen
  • Patent number: 7388288
    Abstract: Interconnect metallization schemes and devices for flip chip bonding are disclosed and described. Metallization schemes include an adhesion layer, a diffusion barrier layer, a wetable layer, and a wetting stop layer. Various thicknesses and materials for use in the different layers are disclosed and are particularly useful for metallization in implantable electronic devices such as neural electrode arrays.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: June 17, 2008
    Assignees: University of Utah Research Foundation, Fraunhofer-Gesellschaft zur Foerderung der angewan
    Inventors: Florian Solzbacher, Reid Harrison, Richard A. Normann, Hans-Hermann Oppermann, Lothar Dietrich, Matthias Klein, Michael Töpper
  • Publication number: 20080047809
    Abstract: The present invention relates to a micromechanical HF switching element, in which a freestanding movable element (5) is situated above a metallic surface (2) on a substrate (1) in such way that it is drawn to the metallic surface (2), to which a dielectric layer (3) is applied, by applying an electrical voltage between the metallic surface (2) and the movable element (5). The present invention also relates to a method for producing micromechanical HF switching elements of this type, in which the dielectric layer (3) is deposited on the metallic surface (2). The present method is distinguished in that a piezoelectric AlN layer having a columnar, polycrystalline structure and a texture is deposited on the metallic surface (2) as the dielectric layer (3). Significantly reduced charging of the dielectric material and increased long-term stability of the switching element are achieved by the present method and the HF switching element thus produced.
    Type: Application
    Filed: May 27, 2005
    Publication date: February 28, 2008
    Applicant: Fraunhofer-Gesellschaft Zur Foerderung der Angewan
    Inventors: Thomas Lisec, Christoph Huth
  • Publication number: 20060137168
    Abstract: The present invention pertains to a process for manufacturing expanded metal provided with a coating, characterized in that the coating is applied to a closed metal foil and this is converted into expanded metal only after the coating. In particular, the coating may be a coating that improves the adhesiveness of the expanded metal to an electrode material and/or the electron conductivity on the surface of the expanded metal. Such expanded metals can be advantageously used as current collectors in or for an anode foil or in or for a cathode foil, e.g., in an electrochemical cell, especially in a battery.
    Type: Application
    Filed: November 11, 2003
    Publication date: June 29, 2006
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewan
    Inventors: Heinz Futscher, Gerold Neumann
  • Publication number: 20010050772
    Abstract: A device for contactless testing of structural and/or surface defects of large-surface bodies, especially of slab-shaped materials includes a conveying device with an unsupported area; a source of heat arranged above the plane of conveyance and extending transversally to the direction of conveyance and which radiates heat in lines or strips onto the plane of conveyance; a thermographic camera having at least one camera line aligned transversally to the direction of conveyance and arranged above the plane of conveyance and after the source of heat in the direction of conveyance; and a computer connected to the camera that has a monitor and generates a separate heat image pattern from every camera line.
    Type: Application
    Filed: April 13, 2001
    Publication date: December 13, 2001
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewan dten Forschung e.V.
    Inventors: Peter Meinlschmidt, Joerg Sembach