Patents Assigned to TRUMPF PHOTONIC COMPONENTS GMBH
  • Patent number: 10965103
    Abstract: A laser arrangement includes a VCSEL array comprising multiple VCSELs arranged on a common semiconductor substrate, an optical structure, and a diffusor structure. The optical structure is arranged to reduce a divergence angle of laser light emitted by each respective VCSEL to a section of the diffusor structure assigned to the respective VCSEL. The diffusor structure is arranged to transform the laser light received from the optical structure to transformed laser light such that a continuous illumination pattern is configured to be provided in a reference plane in a defined field-of-view. The diffusor structure is arranged to increase a size of the illumination pattern in comparison to an untransformed illumination pattern which can be provided without the diffusor structure. The VCSEL array, optical structure, and diffusor structure are arranged such that sections of the diffusor structure do not overlap. Diffusor properties of the diffusor structure vary across the diffusor structure.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: March 30, 2021
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Stephan Gronenborn, Holger Joachim Moench
  • Patent number: 10935483
    Abstract: An optical particle sensor device comprises an optical emitter device for emitting a multitude of measurement laser beams; a detector device for detecting the measurement laser beams scattered on particles in the vicinity of the optical particle sensor device and for generating a single measuring signal assigned to this for each measurement laser beam; and an evaluation device for determining at least one estimated particle value for the number of particles per volume using at least one single measurement signal, wherein the evaluation device determines at least two estimated particle values for the number of particles per volume, which are based on at least partially different single measurement signals and/or a different number of single measurement signals, and on the basis of at least part of the estimated particle values, determines at least one output value for the particle load.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: March 2, 2021
    Assignees: Robert Bosch GmbH, TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Alexander Van Der Lee, Robert Weiss, Sören Sofke, Hans Spruit, Jens-Alrik Adrian
  • Patent number: 10876947
    Abstract: An optical particle sensor apparatus is equipped with a housing (MD) having an optical exit region (OF); an optical emitter device (LD) in the housing that is set up to emit an optical measurement beam (OB) for capturing particles; a focusing lens device (LE) in the housing for directing the optical measurement beam through the optical exit region to outside the housing in a focus region (FA), within which particle capturing is performable; an optical detector device (DD) arranged in the housing and set up to capture the measurement beam (OB?) scattered by particles (P) and to output information produced using an algorithm relating to the presence of the particles; and a controllable adaptation device (C, E), which is set up to adapt at least one optical property of the lens device and/or of the optical emitter device and/or of the optical detector device based on an input signal (ES; ES?) that provides information relating to a presence and to optical properties of an external optical window (EF) arranged be
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: December 29, 2020
    Assignees: Robert Bosch GmbH, TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Stefan Weiss, Alexander Herrmann, Robert Wolf, Sören Sofke
  • Patent number: 10866083
    Abstract: The invention describes a laser sensor module (100) for particle density detection. The laser sensor module (100) comprising at least one first laser (110), at least one first detector (120) and at least one electrical driver (130). The first laser (110) is adapted to emit first laser light in reaction to signals provided by the at least one electrical driver (130). The at least one first detector (120) is adapted to detect a first self-mixing interference signal of an optical wave within a first laser cavity of the first laser (110). The first self-mixing interference signal is caused by first reflected laser light reentering the first laser cavity, the first reflected laser light being reflected by a particle receiving at least a part of the first laser light. The laser sensor module (100) is adapted to reduce multiple counts of the particle. The invention further describes a related method and computer program product.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: December 15, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Alexander Marc Van Der Lee, Joachim Wilhelm Hellmig, Johannes Hendrikus Maria Spruit, Holger Moench, Cornelis Reinder Ronda, Koray Karakaya
  • Patent number: 10855055
    Abstract: A VCSEL array has VCSELs on a semiconductor substrate and has a prismatic or Fresnel optical structure, which is arranged to transform laser light to provide a continuous illumination pattern in a reference plane. The optical structure increases a size of the illumination pattern in comparison to an untransformed illumination pattern. The optical structure is arranged such that each VCSEL illuminates a sector of the pattern. Sub-surfaces of the optical structure with different height above the semiconductor substrate are arranged next to each other. Each VCSEL is associated with a sub-surface. A distance between each VCSEL and a size of its sub-surface is arranged such that the VCSEL illuminates only a part of the sub-surface without illuminating one of the steps. The VCSEL array has an array of microlenses, each VCSEL being associated with a microlens arranged to collimate the laser light after traversing the optical structure.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: December 1, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Pascal Jean Henri Bloemen, Stephan Gronenborn
  • Patent number: 10782221
    Abstract: A system for determining a particle contamination and a method for determining a particle contamination in a measurement environment is provided in which individual particles in the measurement environment are detected (S1), wherein a) an estimate of the number of particles per volume in the measurement environment is ascertained (S2), b) an estimate of the number of particles per volume and characterization information describing the particle source in the measurement information are taken as a basis for ascertaining an output value for the particle contamination in the measurement environment (S3), and c) context-related data are made available and the characterization information is estimated on the basis of the available context-related data (S4).
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: September 22, 2020
    Assignees: ROBERT BOSCH GMBH, TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Stefan Weiss, Alexander Herrmann, Robert Wolf, Alexander Van Der Lee, Wolfram Johannes Martin Lyda, Balazs Jatekos, Robert Weiss, Sören Sofke, Hans Spruit, Jens-Alrik Adrian, Matthias Falk, Dominik Moser
  • Patent number: 10757758
    Abstract: The invention relates to a heating system for heating a living being, for instance, a person (2) within a vehicle (1) being preferentially a hybrid car or an electric car. The heating system comprises an infrared laser system (5, 6) for illuminating the living being with infrared laser light, thereby heating the living being. Thus, heating radiation is used, which has a high collimation and which can be focused relatively easily. The heating can therefore be confined to a certain region, in which the living being is located. The heating can even be confined to the living being or to parts of the living being only. This more focused heating allows for a reduction of the energy consumption.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 25, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Holger Moench, Mark Carpaij
  • Patent number: 10732091
    Abstract: The invention describes a laser sensor module (100) for particle size detection. The laser sensor module (100) comprises at least one first laser (110), at least one first detector (120), at least one electrical driver (130) and at least one evaluator (140). The first laser (110) is adapted to emit first laser light in reaction to signals provided by the at least one driver (130). The at least one first detector (120) is adapted to determine a first self-mixing interference signal (30) of an optical wave within a first laser cavity of the first laser (110). The first self-mixing interference signal (30) is caused by first reflected laser light reentering the first laser cavity, the first reflected laser light being reflected by a particle receiving at least a part of the first laser light.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: August 4, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Alexander Marc Van Der Lee, Joachim Wilhelm Hellmig, Johannes Hendrikus Maria Spruit
  • Patent number: 10707646
    Abstract: The invention describes a laser device comprising between two and six mesas (120) provided on one semiconductor chip (110), wherein the mesas (120) are electrically connected in parallel such that the mesas (120) are adapted to emit laser light if a defined threshold voltage is provided to the mesas (120). Two to six mesas (120) with reduced active diameter in comparison to a laser device with one mesa improve the yield and performance despite of the fact that two to six mesas need more area on the semiconductor chip thus increasing the total size of the semiconductor chip (110). The invention further describes a method of marking semiconductor chips (110). A functional layer of the semiconductor chip (110) is provided and structured in a way that a single semiconductor chip (110) can be uniquely identified by means of optical detection of the structured functional layer. The structured layer enables identification of small semiconductor chips (110) with a size below 200 ?m×200 ?m.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: July 7, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Philipp Henning Gerlach, Alexander Weigl
  • Patent number: 10680411
    Abstract: The invention describes a laser sensor module comprising at least one Vertical Cavity Surface Emitting Laser (100) and at least one driving circuit (120). The driving circuit (120) is adapted to provide electrical energy to the Vertical Cavity Surface Emitting Laser (100) such that the Vertical Cavity Surface Emitting Laser (100) emits laser pulses (345) with a pulse length (356) of less than 100 ns and a duty cycle of less than 5% in comparison to a continuous laser emission. The driving circuit (120) is further adapted to provide additional energy to the Vertical Cavity Surface Emitting Laser (100) at least 100 ns prior to at least a part of the laser pulses (345) such that the part of the laser pulses (345) are emitted under defined optical conditions. The invention further describes a distance detection device comprising the laser sensor module and a method of driving the laser sensor module.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: June 9, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Holger Moench, Alexander Marc Van Der Lee, Stephan Gronenborn
  • Patent number: 10658817
    Abstract: The disclosure relates to a Vertical Cavity Surface Emitting Laser (100) comprising a first electrical contact (105), a substrate (110), a first Distributed Bragg Reflector (115), an active layer (120), a second Distributed Bragg Reflector (130) and a second electrical contact (135). The Vertical Cavity Surface Emitting Laser comprises at least two current aperture layers (125) arranged below or above the active layer (120), wherein each of the current aperture layers (125) comprises one AlyGa(1?y)As-layer, wherein a first current aperture layer (125a) of the at least two current aperture layers (125) is arranged nearer to the active layer (120) as a second current aperture layer (125b) of the at least two current aperture layers (125), wherein the first current aperture layer (125a) comprises a first current aperture (122a) with a bigger size as a second current aperture (122b) of the second current aperture layer (125b). The disclosure also relates to a method of manufacturing such a VCSEL (100).
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: May 19, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Philipp Henning Gerlach, Roger King
  • Patent number: 10641695
    Abstract: A method for determining operating conditions of a particle detector that includes a multimode Vertical Cavity Surface Emitting Laser (VCSEL) includes providing an electrical drive current to the multimode VCSEL such that a laser beam is emitted by the multimode VCSEL and varying the electrical drive current within a predefined range of electrical drive currents. The method further includes determining, as a function of the electrical drive current, an intensity signal of an optical wave within a laser cavity of the multimode VCSEL, determining, as a function of the electrical drive current, a noise measure of the intensity signal, determining a range of electrical drive currents for which the noise measure is below a predefined threshold noise measure value, and determining operating conditions of the particle detector by choosing an electrical drive current for particle detection out of the determined low noise range of electrical drive currents.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: May 5, 2020
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Ulrich Weichmann, Joachim Wilhelm Hellmig, Alexander Marc Van Der Lee, Holger Joachim Moench