Patents by Inventor Volker Raab

Volker Raab 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).

  • Patent number: 10844816
    Abstract: An air filter device for a motor vehicle is provided with a filter housing having an air inlet and an air outlet, a filter insert which is received in the filter housing and divides the inside of the filter housing into an untreated air section and a pure air section, and a bypass line for supplying air into the untreated air section. The bypass line extends from a connection opening in the filter housing to a cooler, especially a charge air cooler of the motor vehicle.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: November 24, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Johannes Bartl, Volker Raab, Christian Debevec, Werner Baumgartner
  • Publication number: 20180320644
    Abstract: An air filter device for a motor vehicle is provided with a filter housing having an air inlet and an air outlet, a filter insert which is received in the filter housing and divides the inside of the filter housing into an untreated air section and a pure air section, and a bypass line for supplying air into the untreated air section. The bypass line extends from a connection opening in the filter housing to a cooler, especially a charge air cooler of the motor vehicle.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Inventors: Johannes BARTL, Volker RAAB, Christian DEBEVEC, Werner BAUMGARTNER
  • Publication number: 20110261456
    Abstract: The invention comprises an assembly (a) by which two polarized beam sources (1) and (2) of different wavelength by means of polarizing beam splitters (5) can be superimposed. By means of a dispersively birefringent crystal (6) both beams are rectified to reconstitute the linear polarization. If, as assumed in (b), the beam sources can react spectrally to feedback, an additional polarization filter (8) and a partially reflecting coating (9) can ensure that suitable wavelengths are established automatically. This assembly can be scaled as depicted in (b). By help of further dispersively birefringent crystals (6) and birefringent displacers more beams can be combined into a single beam, eight sources in the given setup.
    Type: Application
    Filed: October 20, 2009
    Publication date: October 27, 2011
    Inventor: Volker Raab
  • Patent number: 7609744
    Abstract: A simple and compact laser resonator is proposed which makes it possible to symmetrically operate a gain medium, preferably a semiconductor, which possesses more than one channel of emission. As a result higher output powers and/or better beam qualities and/or better spectral characteristics can be achieved. The resonator is very compact and ideally comprises only three optical elements: a laseractive gain medium (1), a cylindrical collimation lens (5), and a prism (6) which is adapted to the angle between the two emissions (4) and which carries a beam splitter (7) and a feedback mirror (9) on its faces. Preferably the gain medium (1) possesses a feedback element (2) and an antireflective coating (3) on its faces. If no antireflective coating (11) is desired the same effect can be achieved by arranging the angle of incidence to fulfill the Brewster-condition.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: October 27, 2009
    Inventor: Volker Raab
  • Publication number: 20080165821
    Abstract: A simple and compact laser resonator is proposed which makes it possible to symmetrically operate a gain medium, preferably a semiconductor, which possesses more than one channel of emission. As a result higher output powers and/or better beam qualities and/or better spectral characteristics can be achieved. The resonator is very compact and ideally comprises only three optical elements: a laseractive gain medium (1), a cylindrical collimation lens (5), and a prism (6) which is adapted to the angle between the two emissions (4) and which carries a beam splitter (7) and a feedback mirror (9) on its faces. Preferably the gain medium (1) possesses a feedback element (2) and an antireflective coating (3) on its faces. If no antireflective coating (11) is desired the same effect can be achieved by arranging the angle of incidence to fulfill the Brewster-condition.
    Type: Application
    Filed: April 25, 2007
    Publication date: July 10, 2008
    Inventor: Volker Raab
  • Publication number: 20040228385
    Abstract: In a device and method for generating laser radiation based on semiconductors, with which laser light of a high beam quality can be produced, the device producing laser radiation has a reflective element, which has no influence on the divergence of the light exiting the semiconductor and is placed at a distance from the semiconductor at which the arrangement forms an external unstable resonator, the divergent light exiting the semiconductor.
    Type: Application
    Filed: May 28, 2004
    Publication date: November 18, 2004
    Inventors: Volker Raab, Ralf Menzel