Patents by Inventor Philipp Gerlach

Philipp Gerlach 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).

  • Method and apparatus for monitoring the optical output power of a laser diode with an associated photodiode and particle sensor device
    Patent number: 11646545
    Abstract: The present invention provides methods and an apparatus for monitoring the optical output power of a laser diode (LD) having an associated photodiode (PD), and a particle sensor apparatus. The photodiode (PD) is operable together with the laser diode (LD), wherein it detects the light (LS) of the laser diode (LD) and converts it into an electrical current, and is thermally coupled to the laser diode (LD). Monitoring of the optical output power P is effected during the operation of the laser diode (LD) and is based on current measurements and/or voltage measurements at the laser diode (LD) and at the photodiode (PD).
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 9, 2023
    Assignees: Trumpf Photonic Components GmbH, Robert Bosch GmbH
    Inventors: Robert Wolf, Soren Sofke, Philipp Gerlach, Susanne Weidenfeld, Rico Srowik
  • Method of estimating a condition parameter of a laser diode with an associated photodiode, apparatus for monitoring the operation of such laser diode and particular sensor apparatus
    Patent number: 11193870
    Abstract: The present invention provides a method for estimating a condition parameter of a laser diode having an associated photodiode, to an apparatus for monitoring the operation of such a laser diode, and to a particle sensor apparatus. The photodiode (PD) is operable together with the laser diode (LD), wherein it detects the light (LS) of the laser diode (LD) and converts it into an electrical current, and is thermally coupled to the laser diode (LD). The at least one condition parameter is estimated during the operation of the laser diode (LD) and the estimation is based on current measurements and/or voltage measurements at the laser diode (LD) and/or at the photodiode (PD).
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: December 7, 2021
    Assignees: Robert Bosch GmbH, TRUMPF PHOTONIC COMPONENTS, GMBH
    Inventors: Robert Wolf, Soren Sofke, Philipp Gerlach, Susanne Weidenfeld
  • Method of Estimating a Condition Parameter of a Laser Diode with an Associated Photodiode, Apparatus for Monitoring the Operation of Such Laser Diode and Particular Sensor Apparatus
    Publication number: 20200033243
    Abstract: The present invention provides a method for estimating a condition parameter of a laser diode having an associated photodiode, to an apparatus for monitoring the operation of such a laser diode, and to a particle sensor apparatus. The photodiode (PD) is operable together with the laser diode (LD), wherein it detects the light (LS) of the laser diode (LD) and converts it into an electrical current, and is thermally coupled to the laser diode (LD). The at least one condition parameter is estimated during the operation of the laser diode (LD) and the estimation is based on current measurements and/or voltage measurements at the laser diode (LD) and/or at the photodiode (PD).
    Type: Application
    Filed: July 30, 2019
    Publication date: January 30, 2020
    Inventors: Robert Wolf, Soren Sofke, Philipp Gerlach, Susanne Weidenfeld
  • Method and Apparatus for Monitoring the Optical Output Power of a Laser Diode with an Associated Photodiode and Particle Sensor Device
    Publication number: 20200036157
    Abstract: The present invention provides methods and an apparatus for monitoring the optical output power of a laser diode (LD) having an associated photodiode (PD), and a particle sensor apparatus. The photodiode (PD) is operable together with the laser diode (LD), wherein it detects the light (LS) of the laser diode (LD) and converts it into an electrical current, and is thermally coupled to the laser diode (LD). Monitoring of the optical output power P is effected during the operation of the laser diode (LD) and is based on current measurements and/or voltage measurements at the laser diode (LD) and at the photodiode (PD).
    Type: Application
    Filed: July 29, 2019
    Publication date: January 30, 2020
    Inventors: Robert Wolf, Soren Sofke, Philipp Gerlach, Susanne Weidenfeld, Rico Srowik
  • Wavelength-controlled semiconductor laser device
    Patent number: 8345719
    Abstract: A semiconductor laser device comprising a laser diode with an integrated photodiode, wherein one of the components of the laser diode with the integrated photodiode is also used for heating the laser diode. A simpler design of a wavelength-controlled semiconductor laser is thus obtained.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: January 1, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Holger M. Moench, Philipp Gerlach, Mark Carpaij, Alexander M. Van Der Lee
  • WAVELENGTH-CONTROLLED SEMICONDUCTOR LASER DEVICE
    Publication number: 20110164633
    Abstract: A semiconductor laser device comprising a laser diode with an integrated photodiode, wherein one of the components of the laser diode with the integrated photodiode is also used for heating the laser diode. A simpler design of a wavelength-controlled semiconductor laser is thus obtained.
    Type: Application
    Filed: September 16, 2009
    Publication date: July 7, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Holger M. Moench, Philipp Gerlach, Mark Carpaij, Alexander M. Van Der Lee