Patents by Inventor Bernd Ackerman

Bernd Ackerman 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).

  • Color controlled light source and a method for controlling color generation in a light source
    Patent number: 9179516
    Abstract: This invention relates to a color controlled light source comprising a plurality of colored light elements, and a plurality of (filtered) photo detectors, having different spectral characteristics covering all or most of the total spectrum of the light elements. The (filtered) photo detectors detect the light output of the light source, and generate corresponding detection signals. The light source further has a color control unit for generating driving signals to the light elements on the basis of the detection signals and a predetermined target color point of the light output of the light source, and a modulator for individual signature modulation of the driving signal to each one of said light elements. A corresponding demodulator is provided for demodulation of the detection signals and extraction, from each detection signal, of actual values of the light outputs of the light elements.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: November 3, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Eduard J. Meijer, John B. Mills, Volkmar Schulz, Bernd Ackerman, Lorenzo Feri, Hans M. B. Boeve
  • COLOR CONTROLLED LIGHT SOURCE AND A METHOD FOR CONTROLLING COLOR GENERATION IN A LIGHT SOURCE
    Publication number: 20100327755
    Abstract: This invention relates to a color controlled light source comprising a plurality of colored light elements, and a plurality of (filtered) photo detectors, having different spectral characteristics covering all or most of the total spectrum of the light elements. The (filtered) photo detectors detect the light output of the light source, and generate corresponding detection signals. The light source further has a color control unit for generating driving signals to the light elements on the basis of the detection signals and a predetermined target color point of the light output of the light source, and a modulator for individual signature modulation of the driving signal to each one of said light elements. A corresponding demodulator is provided for demodulation of the detection signals and extraction, from each detection signal, of actual values of the light outputs of the light elements.
    Type: Application
    Filed: October 23, 2007
    Publication date: December 30, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Eduard J. Meijer, John B. Mills, Volkmar Schulz, Bernd Ackerman, Lorenzo Feri, Hans M.B. Boeve