Patents by Inventor Hans Spruit
Hans Spruit 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).
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Publication number: 20240176136Abstract: A method for identifying eye gestures of an eye includes the steps of emitting at least one laser beam onto the eye determining a single measuring sample having current values for: an optical path length of the emitted laser beam; a signal-to-noise ratio of radiation scattered back from the eye; an eye speed of the eye; and identifying an eye gesture based on the single measuring sample, wherein the optical path length is determined based on laser feedback interferometry of the emitted laser radiation with the radiation scattered back from the eye, and wherein the eye speed is determined based on a Doppler shift of the emitted radiation and the radiation scattered back, determined by means of the laser feedback interferometry.Type: ApplicationFiled: March 8, 2022Publication date: May 30, 2024Inventors: Andreas PETERSEN, Thomas Alexander SCHLEBUSCH, Johannes MEYER, Hans SPRUIT, Jochen HELLMIG
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Patent number: 11947112Abstract: An optical arrangement of data smart glasses includes a first laser device configured to emit a projection light beam, a second laser device configured to emit a measuring light beam, a first scanner, a second scanner, and a beam combiner configured to bundle the projection light beam and the measuring light beam into a common light beam, wherein the first scanner is configured to deflect the projection light beam emitted by the first laser device in a first axis, and wherein the second scanner is configured to deflect the common light beam focused by the beam combiner in a second axis.Type: GrantFiled: October 12, 2021Date of Patent: April 2, 2024Assignees: Robert Bosch Gmbh, Trumpf Photonic Components GmbHInventors: Andreas Petersen, Thomas Alexander Schlebusch, Hans Spruit, Jochen Hellmig
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Publication number: 20230400689Abstract: An optical arrangement of data smartglasses includes a first laser device configured to emit a projection light beam, a second laser device configured to emit a measuring light beam, a first scanner, a second scanner, and a beam combiner configured to bundle the projection light beam and the measuring light beam into a common light beam, wherein the first scanner is configured to deflect the projection light beam emitted by the first laser device in a first axis, and wherein the second scanner is configured to deflect the common light beam focused by the beam combiner in a second axis.Type: ApplicationFiled: October 12, 2021Publication date: December 14, 2023Inventors: Andreas PETERSEN, Thomas Alexander SCHLEBUSCH, Hans SPRUIT, Jochen HELLMIG
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Patent number: 11828594Abstract: A laser sensor module includes a first laser source configured to emit first modulated light, the first modulated light being modulated laser light. The laser sensor module further includes circuitry configured to drive the first laser source with a first modulated driving current to cause the first laser source to emit the modulated laser light, a detector configured to detect the modulated laser light, which induces a photocurrent with variations resulting from modulation of the modulated laser light, and a second laser source configured to emit second modulated light. The circuitry is further configured to drive the second laser source with a second modulated driving current to cause the second laser source to emit the second modulated light. The detector is configured to detect the second modulated light. The circuitry is configured to adapt the amplitude of the second modulated driving current to induce a contribution to the photocurrent.Type: GrantFiled: September 13, 2021Date of Patent: November 28, 2023Assignee: TRUMPF PHOTONIC COMPONENTS GMBHInventors: Hans Spruit, Jochen Hellmig, Alexander Marc Van der Lee, Jeroen Dragt, Pieter Hoeven
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Patent number: 11733774Abstract: The invention relates to an eye tracking arrangement that includes a camera configured to capture images of an eye at a first scanning rate, a laser velocimeter configured to capture an eye velocity of a movement of the eye by laser Doppler velocimetry at a second scanning rate and a control device configured to determine an absolute eye position based on the images, and track a gaze direction of the eye based on the absolute eye position and the eye velocity.Type: GrantFiled: October 18, 2021Date of Patent: August 22, 2023Assignees: ROBERT BOSCH GMBH, TRUMPF PHOTONIC COMPONENTS GMBHInventors: Andreas Petersen, Thomas Alexander Schlebusch, Hans Spruit, Jochen Hellmig
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Patent number: 11656166Abstract: The invention relates to a method for detecting particles, having the steps of: receiving (S1) a measurement signal; calculating (S2) at least one estimated noise value using the received measurement signal; and detecting (S3) the particles using the measurement signal on the basis of at least one detection criterion, wherein the at least one detection criterion depends on the at least one calculated estimated noise value.Type: GrantFiled: November 20, 2019Date of Patent: May 23, 2023Assignees: Robert Bosch GmbH, Trumpf Photonic Components GmbHInventors: Robert Wolf, Alexander Van Der Lee, Rico Srowik, Hans Spruit, Okke Ouweltjes
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Publication number: 20230122222Abstract: A method (600), a device (100), and a system (700) for biometrically identifying a user of a device (100).Type: ApplicationFiled: October 18, 2022Publication date: April 20, 2023Inventors: Johannes Meyer, Thomas Alexender Schlebusch, Andreas Petersen, Jochen Hellmig, Hans Spruit
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Patent number: 11543273Abstract: The invention relates to a method for determining the absolute value of the flow velocity (v) of a particle-transporting medium. At least two measurement laser beams (L_i) with linearly independent, non-orthogonal measurement directions (b_i) are emitted. The measurement laser beams (L_i) scattered at particles are detected and one measurement signal (m_i) is generated in each case for each measurement laser beam (L_i).Type: GrantFiled: December 18, 2019Date of Patent: January 3, 2023Assignees: Robert Bosch GmbH, Trumpf Photonic Components GmbHInventors: Alexander Van Der Lee, Robert Weiss, Hans Spruit
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Patent number: 11513594Abstract: A method for operating smart glasses includes an input unit and/or output unit and a gaze detection arrangement, wherein the gaze detection arrangement detects any eye movement of an eye including the steps of irradiating at least one wavelength-modulated laser beam to the eye, detecting an optical path length of the emitted laser beam based on laser feedback interferometry of the emitted laser radiation with backscattered radiation from the eye, detecting a Doppler shift of the emitted and backscattered radiation based on the laser feedback interferometry, and detecting an eye velocity based on the Doppler shift, and wherein the input unit and/or output unit is operated based on the optical path length and/or the eye velocity.Type: GrantFiled: June 2, 2021Date of Patent: November 29, 2022Assignees: TRUMPF PHOTONIC COMPONENTS GMBH, ROBERT BOSCH GMBHInventors: Andreas Petersen, Thomas Alexander Schlebusch, Johannes Meyer, Hans Spruit, Jochen Hellmig
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Publication number: 20220349703Abstract: A laser sensor includes a laser source configured to emit a laser beam, and optics configured to project the laser beam as a one- or two-dimensional patterned laser beam onto an object to be examined, such that a distance of the patterned laser beam from the laser source varies along the patterned laser beam projected on the object. The laser sensor further includes a detector configured to determine a self-mixing interference signal generated by laser light of the patterned laser beam reflected from the object back into the laser source, and circuitry configured to analyze a spectrum of the self-mixing interference signal and extract from the spectrum of the self-mixing interference signal multiple frequencies that are indicative of at least one of the following: multiple distances along the patterned laser beam from the laser source, or multiple velocities along the patterned laser beam with respect to the laser source.Type: ApplicationFiled: April 27, 2022Publication date: November 3, 2022Inventors: Hans Spruit, Jochen Hellmig, Stephan Gronenborn, Johannes Meyer, Andreas Petersen, Thomas Schlebusch
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Patent number: 11435578Abstract: A method for detecting a gaze direction of an eye includes the steps of irradiating at least one wavelength-modulated laser beam onto an eye, detecting an optical path length of the emitted laser beam based on laser feedback interferometry of the emitted laser radiation with a backscattered radiation from the eye, detecting a Doppler shift of the emitted radiation and the backscattered radiation based on the laser feedback interferometry, detecting an eye velocity based on the Doppler shift, and detecting an eye movement of the eye based on the optical path length and the eye velocity.Type: GrantFiled: June 1, 2021Date of Patent: September 6, 2022Assignees: TRUMPF PHOTONIC COMPONENTS GMBH, ROBERT BOSCH GMBHInventors: Andreas Petersen, Thomas Alexander Schlebusch, Johannes Meyer, Hans Spruit, Jochen Hellmig
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Patent number: 11402551Abstract: The invention relates to an optical lens (10) for a photodiode-equipped device, which is arrangeable at and/or in the photodiode-equipped device in such a way that light beams (14) emitted by at least two photodiodes of the photodiode-equipped device transmit into the optical lens (10) through a light entrance side (S1) of the optical lens (10) and emerge from the optical lens (10) at a light exit side (S2) of the optical lens (10), and for which a central longitudinal axis (16) extending centrally through the light entrance side (S1) and centrally through the light exit side (S2) is definable, wherein the light entrance side (S1) of the optical lens (10) and the light exit side (S2) of the optical lens (10) are embodied in each case as a freeform surface for off-axis projection in such a way that the light beams (14) emitted by the photodiodes (32) arranged on a circular path around the central longitudinal axis (16) are focused off-axis by means of the optical lens (10).Type: GrantFiled: August 15, 2019Date of Patent: August 2, 2022Assignees: ROBERT BOSCH GMBH, TRUMPF PHOTONIC COMPONENTS GMBHInventors: Alexander Van Der Lee, Balazs Jatekos, Hans Spruit, Peter Jutte
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Publication number: 20220121279Abstract: The invention relates to an eye tracking arrangement that includes a camera configured to capture images of an eye at a first scanning rate, a laser velocimeter configured to capture an eye velocity of a movement of the eye by laser Doppler velocimetry at a second scanning rate and a control device configured to determine an absolute eye position based on the images, and track a gaze direction of the eye based on the absolute eye position and the eye velocity.Type: ApplicationFiled: October 18, 2021Publication date: April 21, 2022Inventors: Andreas PETERSEN, Thomas Alexander SCHLEBUSCH, Hans SPRUIT, Jochen HELLMIG
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Publication number: 20220082369Abstract: A laser sensor module includes a first laser source configured to emit first modulated light, the first modulated light being modulated laser light. The laser sensor module further includes circuitry configured to drive the first laser source with a first modulated driving current to cause the first laser source to emit the modulated laser light, a detector configured to detect the modulated laser light, which induces a photocurrent with variations resulting from modulation of the modulated laser light, and a second laser source configured to emit second modulated light. The circuitry is further configured to drive the second laser source with a second modulated driving current to cause the second laser source to emit the second modulated light. The detector is configured to detect the second modulated light. The circuitry is configured to adapt the amplitude of the second modulated driving current to induce a contribution to the photocurrent.Type: ApplicationFiled: September 13, 2021Publication date: March 17, 2022Inventors: Hans Spruit, Jochen Hellmig, Alexander Marc Van der Lee, Jeroen Dragt, Pieter Hoeven
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Publication number: 20210373325Abstract: A method for detecting a gaze direction of an eye includes the steps of irradiating at least one wavelength-modulated laser beam onto an eye, detecting an optical path length of the emitted laser beam based on laser feedback interferometry of the emitted laser radiation with a backscattered radiation from the eye, detecting a Doppler shift of the emitted radiation and the backscattered radiation based on the laser feedback interferometry, detecting an eye velocity based on the Doppler shift, and detecting an eye movement of the eye based on the optical path length and the eye velocity.Type: ApplicationFiled: June 1, 2021Publication date: December 2, 2021Inventors: Andreas PETERSEN, Thomas Alexander SCHLEBUSCH, Johannes MEYER, Hans SPRUIT, Jochen HELLMIG
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Publication number: 20210373659Abstract: A method for operating smart glasses includes an input unit and/or output unit and a gaze detection arrangement, wherein the gaze detection arrangement detects any eye movement of an eye including the steps of irradiating at least one wavelength-modulated laser beam to the eye, detecting an optical path length of the emitted laser beam based on laser feedback interferometry of the emitted laser radiation with backscattered radiation from the eye, detecting a Doppler shift of the emitted and backscattered radiation based on the laser feedback interferometry, and detecting an eye velocity based on the Doppler shift, and wherein the input unit and/or output unit is operated based on the optical path length and/or the eye velocity.Type: ApplicationFiled: June 2, 2021Publication date: December 2, 2021Inventors: Andreas PETERSEN, Thomas Alexander SCHLEBUSCH, Johannes MEYER, Hans SPRUIT, Jochen HELLMIG
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Publication number: 20210116355Abstract: A method reduces false-positive particle counts detected by an interference particle sensor module, which has a laser and a light detector. The method including: emitting laser light; providing a high-frequency signal during the emission of the laser light, a modulation frequency of the high-frequency signal being between 10-500 MHz; detecting an optical response by the light detector in reaction to the emitted laser light while providing the high-frequency signal, which is arranged such that a detection signal caused by a macroscopic object positioned between a first and second distance is reduced in comparison to a detection signal caused by the macroscopic object at the same position without providing the high-frequency signal. The high-frequency signal is provided to a tuning structure of the particle sensor module which is arranged to modify a resonance frequency of an optical resonator comprised by the laser sensor module upon reception of the high-frequency signal.Type: ApplicationFiled: December 21, 2020Publication date: April 22, 2021Inventors: Hans Spruit, Alexander Van der Lee, Philipp Henning Gerlach, Robert Wolf, Robert Weiss, Matthias Falk
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Patent number: 10935483Abstract: 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: GrantFiled: August 15, 2019Date of Patent: March 2, 2021Assignees: Robert Bosch GmbH, TRUMPF PHOTONIC COMPONENTS GMBHInventors: Alexander Van Der Lee, Robert Weiss, Sören Sofke, Hans Spruit, Jens-Alrik Adrian
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Patent number: 10782221Abstract: 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: GrantFiled: October 21, 2019Date of Patent: September 22, 2020Assignees: ROBERT BOSCH GMBH, TRUMPF PHOTONIC COMPONENTS GMBHInventors: 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
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Publication number: 20200200577Abstract: The invention relates to a method for determining the absolute value of the flow velocity (v) of a particle-transporting medium. At least two measurement laser beams (L_i) with linearly independent, non-orthogonal measurement directions (b_i) are emitted. The measurement laser beams (L_i) scattered at particles are detected and one measurement signal (m_i) is generated in each case for each measurement laser beam (L_i).Type: ApplicationFiled: December 18, 2019Publication date: June 25, 2020Inventors: Alexander Van Der Lee, Robert Weiss, Hans Spruit