Patents by Inventor Marc Luennemann

Marc Luennemann 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).

  • Semiconductor incandescent lamp retrofit lamp
    Patent number: 9664339
    Abstract: A semiconductor incandescent lamp retrofit lamp may include: at least one semiconductor light source, at least one light scattering body, and at least one optical waveguide, into which light of the at least one semiconductor light source can be coupled, wherein the at least one light scattering body is configured and arranged for the purpose of diffusely emitting light supplied thereto from the at least one semiconductor light source by way of the at least one optical waveguide.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: May 30, 2017
    Assignee: OSRAM GMBH
    Inventors: Andreas Bittinger, Marc Luennemann, Sascha Zelt
  • On-Board Illuminating Device and Vehicle Having Said Illuminating Device
    Publication number: 20140197943
    Abstract: The present invention relates to an on-board illuminating device comprising an illuminating unit and a control unit, wherein the control unit transmits a first control signal to the illuminating unit according to an event inside a vehicle (10) characterizing a preparation action for getting out of the vehicle, and the illuminating unit enters an illuminating state in accordance with the first control signal.
    Type: Application
    Filed: January 9, 2014
    Publication date: July 17, 2014
    Inventors: Yi Lin Que, Marc Lünnemann
  • SEMICONDUCTOR INCANDESCENT LAMP RETROFIT LAMP
    Publication number: 20140029285
    Abstract: A semiconductor incandescent lamp retrofit lamp may include: at least one semiconductor light source, at least one light scattering body, and at least one optical waveguide, into which light of the at least one semiconductor light source can be coupled, wherein the at least one light scattering body is configured and arranged for the purpose of diffusely emitting light supplied thereto from the at least one semiconductor light source by way of the at least one optical waveguide.
    Type: Application
    Filed: March 27, 2012
    Publication date: January 30, 2014
    Applicant: OSRAM GMBH
    Inventors: Andreas Bittinger, Marc Luennemann, Sascha Zelt
  • HIGH-PRESSURE DISCHARGE LAMP WITH PARTIAL COATING AND VEHICLE HEADLIGHT COMPRISING SAID LAMP
    Publication number: 20100194264
    Abstract: A high-pressure discharge lamp may include at least one discharge vessel; and two electrodes, which extend into a discharge space of the discharge vessel and between which a light-emitting discharge arc is formed during operation of the high-pressure discharge lamp, wherein a partial coating is applied to a circumferential surface of the lamp in the region of an end section, on the discharge space side, of at least one of the electrodes, said partial coating changing the luminance and color temperature of the emitted light.
    Type: Application
    Filed: September 18, 2008
    Publication date: August 5, 2010
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Marc Luennemann, Oliver Hering
  • Non-linear increase in photosensitivity of photorefractive materials
    Patent number: 6894820
    Abstract: A method of and/or device for writing to an optical modulator using electromagnetic write beams, the modulator having a photorefractive converter body in which the space-modulated write beam may induce changes in the refractive index. An external voltage may be applied to the converter body. The intensity of the external voltage may be selected within a voltage range in which the buildup of changes in the refractive index may be accelerated by an increase in the charge carrier mobility or charge carrier density.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: May 17, 2005
    Assignee: Deutsche Telekom AG
    Inventors: Karsten Buse, Marc Luennemann
  • Non-linear increase in photosensitivity of photorefractive materials
    Publication number: 20040021925
    Abstract: A method of and/or device for writing to an optical modulator using electromagnetic write beams, the modulator having a photorefractive converter body in which the space-modulated write beam may induce changes in the refractive index. An external voltage may be applied to the converter body. The intensity of the external voltage may be selected within a voltage range in which the buildup of changes in the refractive index may be accelerated by an increase in the charge carrier mobility or charge carrier density.
    Type: Application
    Filed: August 1, 2002
    Publication date: February 5, 2004
    Inventors: Karsten Buse, Marc Luennemann