Patents by Inventor Wolfgang Schade

Wolfgang Schade 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: 20180081081
    Abstract: An optical component may be provided having a substrate with a first refractive index, in which space regions with a second refractive index are arranged, wherein the optical component contains at least one optical metamaterial, which contains a plurality of individual pixels each comprising a space region which has the first or the second refractive index, wherein the substrate contains at least one polymer. Further, a sensor may be provided with such an optical component and a process for measuring any of an expansion or a temperature.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 22, 2018
    Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Wolfgang Schade, Michael Köhring, Konrad Bethmann
  • Publication number: 20170307521
    Abstract: A device for determining a refractive index may be provided. The device including at least one waveguide having a core and a cladding surrounding the core, the cladding being at least partly removed in at least one first longitudinal portion and the core including at least one fiber Bragg grating in at least one second longitudinal portion. A method for determining a refractive index or a pressure change in a fluid may also provided. The method may include at least one waveguide having a core and a cladding surrounding the core, the cladding being at least partly removed in at least one longitudinal portion. A method for producing such a device may also be provided.
    Type: Application
    Filed: October 1, 2015
    Publication date: October 26, 2017
    Inventors: Wolfgang Schade, Jörg Burgmeier, Anna Lena Baumann, Björn Reinhard
  • Publication number: 20170205559
    Abstract: A light distributor, a system consisting of a light distributor and an LED luminaire, and a method for producing a light distributor are provided. The light distributor may include a transparent main body having a light entrance area and a light exit area, at least one light-scattering structure with a changed refractive index inside the main body for scattering light, and at least one light-guiding structure with a changed refractive index inside the main body for guiding light. The light-scattering structure and the light-guiding structure may be produced by means of ultrashort pulse laser processing. The light-scattering structure and the light-guiding structure with a changed refractive index may be arranged in the main body.
    Type: Application
    Filed: April 5, 2017
    Publication date: July 20, 2017
    Inventors: Stefan Kontermann, Wolfgang Schade, Christian Winter
  • Patent number: 9702738
    Abstract: An apparatus for measuring state variables with at least one fiber-optic sensor, containing at least one optical coupler, at least one filter element and at least one photoelectric converter, where the optical coupler, the filter element and the photoelectric converter are integrated on a substrate, and the filter element contains at least one Bragg grating which is designed to supply the light portion reflected by the Bragg grating to the photoelectric converter.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: July 11, 2017
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventor: Wolfgang Schade
  • Publication number: 20170160109
    Abstract: A fiber optic sensor may be provided comprising an optical waveguide having at least one first core and a cladding surrounding the first core, wherein the first core extends substantially over the entire length of the optical waveguide and at least one Bragg grating is introduced into the first core, wherein the Bragg grating has an elongated cross section, wherein the short semi-axis is smaller than the diameter of the first core and the center of gravity of the cross section of the at least one Bragg grating lies on the axis of symmetry of the optical waveguide. A method may be provided for determining torsion with such a sensor. A method for the production of such a sensor may be provided.
    Type: Application
    Filed: June 23, 2015
    Publication date: June 8, 2017
    Inventors: Wolfgang Schade, Christian Waltermann
  • Patent number: 9612394
    Abstract: The invention relates to a fiber-optic sensor comprising an optical waveguide having at least one first core and a cladding surrounding the first core, wherein the first core extends substantially over the entire length of the optical waveguide, wherein the sensor has at least one second core which is at least partly surrounded by the cladding, wherein the longitudinal extent of the second core is less than the total length of the optical waveguide and at least one Bragg grating is introduced into the second core. Furthermore, the invention relates to a use of the fiber-optic sensor.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: April 4, 2017
    Assignee: Fraunhofer Gesellschaft Zur Forderung Der Angew. Forschung E.V.
    Inventors: Wolfgang Schade, Jörg Burgmeier
  • Publication number: 20170062839
    Abstract: A gas diffusion electrode may be provided comprising an electron conducting layer with a first side and an opposite second side, wherein the first side is provided with a microstructuring, wherein the gas diffusion electrode additionally has a hydrophobic membrane with a first side and an opposite second side, wherein the second side of the membrane is arranged on the first side of the electron conducting layer. A battery or an accumulator or an electrolyser or a galvanic cell may be provided with a gas diffusion electrode of this type.
    Type: Application
    Filed: May 6, 2015
    Publication date: March 2, 2017
    Inventors: Wolfgang Schade, Andreas Gabler
  • Publication number: 20160047976
    Abstract: The invention relates to a fibre-optic sensor comprising an optical waveguide having at least one first core and a cladding surrounding the first core, wherein the first core extends substantially over the entire length of the optical waveguide, wherein the sensor has at least one second core which is at least partly surrounded by the cladding, wherein the longitudinal extent of the second core is less than the total length of the optical waveguide and at least one Bragg grating is introduced into the second core. Furthermore, the invention relates to a use of the fibre-optic sensor.
    Type: Application
    Filed: March 18, 2014
    Publication date: February 18, 2016
    Inventors: Wolfgang Schade, Jörg Burgmeier
  • Publication number: 20150309251
    Abstract: The invention relates to a method and a device for producing at least one fibre Bragg grating in a waveguide, wherein the waveguide has at least one core having a first refractive index and the fibre Bragg grating contains a plurality of spatial regions which each occupy a partial volume of the core and have a second refractive index, wherein the spatial regions are each produced by the action of laser radiation on a partial volume of the core, wherein the laser radiation contains a plurality of pulse trains each containing a plurality of individual pulses, wherein the time interval between successive individual pulses is smaller than the time interval between successive pulse trains and the time interval between successive individual pulses is chosen between 10 ns and 100 ps or the pulse train has a duration of 50 fs to 50 ps.
    Type: Application
    Filed: December 2, 2013
    Publication date: October 29, 2015
    Applicant: Fraunhofer Gesellschaft Zur Forderung Der Angew, Forschung E.V.
    Inventors: Wolfgang Schade, Jörg Burgmeier
  • Publication number: 20150219848
    Abstract: The invention relates to a planar-optical element having at least one photonic component, which is arranged in at least one substrate containing or consisting of at least one polymer, wherein the substrate includes at least one first film layer having a first side and an opposite second side and a second film layer having a first side and an opposite second side, wherein the first side of the second film layer is arranged on the second side of the first film layer and at least the second film layer contains nanowires, at least in a subarea. The invention also relates to a corresponding sensor element and a method for the production thereof.
    Type: Application
    Filed: August 2, 2013
    Publication date: August 6, 2015
    Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventor: Wolfgang Schade
  • Patent number: 9097648
    Abstract: The present disclosure relates to an example method and optical sensor for detecting molecules of a particular substance by means of an optical sensor. Such an example method may include bringing the sensor into contact with a fluid to be analyzed, coupling light of a first wavelength into an optical resonator of the optical sensor, coupling light of a second wavelength into the same resonator or into a second optical resonator of the optical sensor, detecting, for each of the first and the second wavelengths, an optical signal coupled out of an optical path containing the respective resonator, varying an optical length of the respective resonator or the respective wavelength and detecting a broadening of this resonance indicating an absorption of the light fed into the respective resonator by molecules accumulated at the active layer of this resonator.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: August 4, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Helmut Heidrich, Peter Lützow, Daniel Pergande, Wolfgang Schade
  • Patent number: 9068926
    Abstract: A photo-acoustic gas sensor and methods for producing same, the gas sensor having a resonance body and a device for detecting a vibration of the resonance body, including a device for optically detecting the location of at least one partial surface of the resonance body, wherein the resonance body and the device for detecting a vibration are disposed on exactly one substrate, the resonance body is formed by at least one first recess of the substrate, and the substrate is a semiconductor material.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: June 30, 2015
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventor: Wolfgang Schade
  • Patent number: 8989538
    Abstract: A sensor element for detecting mechanical state variables contains at least one optical waveguide having at least one fiber Bragg grating, and at least one planar optical filter element to which light exiting the optical waveguide can be fed to at least one measuring device for determining an intensity ratio of a Stokes and an anti-Stokes lines and/or a propagation time of an optical signal. A method for detecting mechanical state variables uses such a sensor element running along a measuring section, wherein light having at least one predefinable mean wavelength and a predefinable spectral width is coupled into the optical waveguide and light reflected and/or scattered in the optical waveguide is fed to at least two measuring devices, measuring the intensity of the light exiting the optical waveguide in selected spectral ranges, and measuring an intensity ratio of a Stokes and an Anti-stokes line and/or a propagation time of an optical signal.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: March 24, 2015
    Assignees: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Draka Cable Wuppertal GmbH
    Inventors: Wolfgang Schade, Norbert Keil, Martin Angelmahr, Peter Funken
  • Patent number: 8850867
    Abstract: A photoacoustic sensor, containing a resonance body, which at least partially delimits a space for receiving molecules to be detected, and a device for detecting an oscillation of the resonance body, including a device for optically detecting the location of at least one partial surface of the resonance body. A method for the photoacoustic detection of molecules in the gas phase and to a method for producing an optically integrated photoacoustic sensor.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: October 7, 2014
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Wolfgang Schade, Michael Köhring, Tobias Schossig
  • Publication number: 20140118741
    Abstract: The present disclosure relates to an example method and optical sensor for detecting molecules of a particular substance by means of an optical sensor. Such an example method may include bringing the sensor into contact with a fluid to be analyzed, coupling light of a first wavelength into an optical resonator of the optical sensor, coupling light of a second wavelength into the same resonator or into a second optical resonator of the optical sensor, detecting, for each of the first and the second wavelengths, an optical signal coupled out of an optical path containing the respective resonator, varying an optical length of the respective resonator or the respective wavelength and detecting a broadening of this resonance indicating an absorption of the light fed into the respective resonator by molecules accumulated at the active layer of this resonator.
    Type: Application
    Filed: April 19, 2012
    Publication date: May 1, 2014
    Applicant: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung e.V.
    Inventors: Helmut Heidrich, Peter Lützow, Daniel Pergande, Wolfgang Schade
  • Publication number: 20140061452
    Abstract: An apparatus for measuring state variables with at least one fiber-optic sensor, containing at least one optical coupler, at least one filter element and at least one photoelectric converter, where the optical coupler, the filter element and the photoelectric converter are integrated on a substrate, and the filter element contains at least one Bragg grating which is designed to supply the light portion reflected by the Bragg grating to the photoelectric converter.
    Type: Application
    Filed: April 26, 2012
    Publication date: March 6, 2014
    Applicant: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG e.V.
    Inventor: Wolfgang Schade
  • Publication number: 20130298979
    Abstract: A method for producing a light-absorbing semiconductor component, wherein at least one partial area of a semiconductor substrate is irradiated with a plurality of laser pulses having a predefinable length, wherein the pulse shape of the laser pulses is adapted to at least one predefinable desired shape by modulation of the amplitude and/or of the polarization. A semiconductor component for converting electromagnetic radiation into electrical energy, includes a crystalline semiconductor substrate having a first and an opposite second side, wherein a dopant is introduced at least in a partial volume of the semiconductor substrate which adjoins the first side, such that a first pn junction is formed between the partial volume and the substrate, wherein at least one first partial area of the second side is provided with a dopant and a surface modification, such that a second pn junction is formed.
    Type: Application
    Filed: November 22, 2011
    Publication date: November 14, 2013
    Inventor: Wolfgang Schade
  • Publication number: 20120321242
    Abstract: A sensor element for detecting mechanical state variables contains at least one optical waveguide having at least one fiber Bragg grating, and at least one planar optical filter element to which light exiting the optical waveguide can be fed to at least one measuring device for determining an intensity ratio of a Stokes and an anti-Stokes lines and/or a propagation time of an optical signal. A method for detecting mechanical state variables uses such a sensor element running along a measuring section, wherein light having at least one predefinable mean wavelength and a predefinable spectral width is coupled into the optical waveguide and light reflected and/or scattered in the optical waveguide is fed to at least two measuring devices, measuring the intensity of the light exiting the optical waveguide in selected spectral ranges, and measuring an intensity ratio of a Stokes and an Anti-stokes line and/or a propagation time of an optical signal.
    Type: Application
    Filed: January 24, 2011
    Publication date: December 20, 2012
    Inventors: Wolfgang Schade, Norbert Keil, Martin Angelmahr, Peter Funken
  • Publication number: 20120260719
    Abstract: A photo-acoustic gas sensor and methods for producing same, the gas sensor having a resonance body and a device for detecting a vibration of the resonance body, including a device for optically detecting the location of at least one partial surface of the resonance body, wherein the resonance body and the device for detecting a vibration are disposed on exactly one substrate, the resonance body is formed by at least one first recess of the substrate, and the substrate is a semiconductor material.
    Type: Application
    Filed: October 7, 2010
    Publication date: October 18, 2012
    Inventor: Wolfgang Schade
  • Publication number: 20120210796
    Abstract: A method and a device for spectroscopic detection of molecules, containing a resonance body, an apparatus for identifying a vibration of the resonance body and at least one laser light source, the laser light of which interacts with the molecules to be detected and which is designed to emit light pulses with a duration of less than 200 fs, the device also containing apparatus for pulse shaping the light pulses emitted by the laser light source by modulating the amplitude and/or the phase, to generate sequentially different pulse shapes of the light pulses.
    Type: Application
    Filed: August 24, 2010
    Publication date: August 23, 2012
    Inventor: Wolfgang Schade