Patents Assigned to XARION Laser Acoustics GmbH
  • Patent number: 9641941
    Abstract: Transducers and methods for converting acoustic signals into electrical signals. A device (100) includes an interferometer (106) including two mirrors (108) adapted for reflecting electromagnetic radiation (112) coupled into a space (110) between the mirrors (108). The acoustic signal (102) is to be coupled into the space (110) for influencing the electromagnetic radiation (112) in accordance with this acoustic signal. An electromagnetic radiation detector (112) is adapted for detecting the influenced electromagnetic radiation (112) and for converting the detected influenced electromagnetic radiation (112) into the electric signal (104) being indicative for the acoustic signal (102). An operation point stabilization unit stabilizes an operation point of the device (100).
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 2, 2017
    Assignee: XARION LASER ACOUSTICS GMBH
    Inventor: Balthasar Fischer
  • Patent number: 9417147
    Abstract: A device comprising measurement (7) and reference (3) interferometers is disclosed. Each interferometer is configured to receive light from the same light source (1) and to emit light to respective detectors (6) and has a respective operating point. The measurement interferometer (7) is configured to respond to variations in a physical parameter by varying the intensity of light emitted, whereas the reference interferometer (3) is configured to be unresponsive to variations in the physical parameter. The device further comprises a signal processor for generating a differential output signal depending on respective output signals generated by the detectors (6).
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: August 16, 2016
    Assignee: XARION LASER ACOUSTICS GMBH
    Inventors: Balthasar Fischer, Friedrich Reining, Ernst Wintner
  • Publication number: 20140153930
    Abstract: A device (100) for converting an acoustic signal (102) into an electric signal (104), wherein the device (100) includes an interferometer (106) including two mirrors (108) adapted for reflecting electromagnetic radiation (112) coupled into a space (110) between the mirrors (108). The acoustic signal (102) is to be coupled into the space (110) for influencing the electromagnetic radiation (112) in accordance with this acoustic signal. An electromagnetic radiation detector (112) is adapted for detecting the influenced electromagnetic radiation (112) and for converting the detected influenced electromagnetic radiation (112) into the electric signal (104) being indicative for the acoustic signal (102). An operation point stabilization unit stabilizes an operation point of the device (100).
    Type: Application
    Filed: February 8, 2014
    Publication date: June 5, 2014
    Applicant: XARION Laser Acoustics GmbH
    Inventor: Balthasar Fischer
  • Patent number: 8301029
    Abstract: An acoustoelectric transducer comprising a laser source A and a light receiver H, wherein a soundfield S is provided by which the propagation velocity of the laser beam may be modulated according to the sound pressure while it traverses the soundfield S.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: October 30, 2012
    Assignee: XARION Laser Acoustics GmbH
    Inventor: Balthasar Fischer