Patents Assigned to Karlsruher Institut fur Technologie
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Publication number: 20240146013Abstract: A method and arrangement for compensation of thermally induced depolarising effects in an optical resonator employ a retroreflective prism effecting multiple instances of total internal reflection as one end mirror of the resonator. The retroreflective prism has a first roof edge face pair made of two perpendicular roof edge faces and at least one second face with total internal reflection or a second roof edge face pair. Laser radiation entering parallel to the optical axis of the resonator undergoes total internal reflection through an angle ? at the second face or the second roof edge face pair before it undergoes total internal reflection at the first roof edge face pair and emerges again from the retroreflective prism in a manner parallel to the optical axis of the resonator following another instance of total internal reflection at the second face or the second roof edge face pair.Type: ApplicationFiled: March 3, 2022Publication date: May 2, 2024Applicants: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Karlsruher Institut für TechnologieInventors: Marc EICHHORN, Christelle KIELECK
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Publication number: 20240039232Abstract: A fibre laser assembly includes a pump laser assembly for optical pumping of an active fibre with first pump radiation of a first pump wavelength and means for the generation of second pump radiation at a second pump wavelength, which lies between the first pump wavelength and the wavelength of the seed laser. Doping concentration, length of the active fibre, and power of the first pump radiation are coordinated such that the active fibre absorbs the first pump radiation in the first fibre portion to >90%, the radiation of the second pump wavelength in the first fibre portion is amplified by the first pump radiation to generate the second pump radiation, and the laser radiation of the seed laser is amplified in the remaining second fibre portion by the second pump radiation.Type: ApplicationFiled: February 1, 2022Publication date: February 1, 2024Applicants: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung E.V., Karlsruher Institut für TechnologieInventors: Clément ROMANO, Christelle KIELECK, Marc EICHHORN
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Patent number: 11877892Abstract: A device is provided for ultrasound-based reflection and transmission tomography. A plurality of ultrasonic transducers are held around an imaging volume to be filled with an ultrasonic coupling medium, the transducer holder having an opening for inserting, into the imaging volume, at least one part of a body to be imaged. During imaging, the body to be imaged is supported, where a support-member-opening allows access to the transducer holder by at least one part of the body. A diaphragm is arranged across the support-member-opening such that a center of a diaphragm-opening is placed substantially at a predetermined position. The ultrasonic coupling medium flows out of the imaging volume when at least one part of the body to be imaged is inserted into the imaging volume filled with the ultrasonic coupling medium and/or during imaging.Type: GrantFiled: May 6, 2021Date of Patent: January 23, 2024Assignee: Karlsruher Institut für TechnologieInventors: Nicole Ruiter, Hartmut Gemmeke, Michael Zapf, Torsten Hopp, Nima Rashvand
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Patent number: 11855037Abstract: The invention relates to a method (110) for producing an electrically conductive connection (112, 112?) on a substrate (114), comprising the following steps: a) providing a substrate (114), wherein the substrate (114) is configured for receiving an electrically conductive connection (112, 112?); b) providing a reservoir of an electrically conductive liquid alloy, wherein the reservoir has a surface at which the alloy has an insulating layer; c) providing a capillary (120) configured for taking up the electrically conductive liquid alloy; d) penetrating of a tip (122) of the capillary (120) under the surface of the reservoir and taking up of a portion of the alloy from the reservoir; and e) applying the portion of the alloy at least partly to the substrate (114) in such a manner that an electrically conductive connection (112, 112?) is formed from the alloy on the substrate (114), wherein the alloy remains on the substrate (114) by adhesion.Type: GrantFiled: August 22, 2019Date of Patent: December 26, 2023Assignee: Karlsruher Institut für TechnologieInventors: Uwe Bog, Michael Hirtz, Harald Fuchs, Jasmin Aghassi, Gabriel Cadilha Marques, Subho Dasgupta, Ben Breitung, Horst Hahn
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Publication number: 20230367075Abstract: The invention relates to an optical waveguide component and to a method for the production thereof.Type: ApplicationFiled: September 24, 2021Publication date: November 16, 2023Applicant: Karlsruher Institut für TechnologieInventors: Matthias Blaicher, Aleksandar Nesic, Pascal Maier, Andreas Hofmann, Yilin Xu, Christian Koos
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Patent number: 11817063Abstract: A perceived gamut (PG) of a physical display device presenting frames of an image sequence to a human viewer may be increased. An interface of the system receives a sequence of frames from an image sequence source with each frame having input color data associated with each pixel of the respective frame, the input color data being given in a specified color space. A perceived color computation module computes for each particular frame of the received image sequence perceived colors of each pixel and a frame-specific adapted white point. An optimizer module applies a chromatic adaptation transformation to each window frame to determine display gamut adjusted perceived colors of each pixel of the respective frame and an error per window frame. The chromatic adaptation transformation is updated for all window frames to minimize the determined error, and the current frame is output to the display.Type: GrantFiled: April 8, 2022Date of Patent: November 14, 2023Assignee: Karlsruher Institut für TechnologieInventors: Carsten Dachsbacher, Emanuel Schrade
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Patent number: 11746010Abstract: Direct thermal decomposition of hydrocarbons into solid carbon and hydrogen is performed by a process and a device. The process comprises preheating a hydrocarbon gas stream to a temperature between 500° C. and 700° C. and injecting the pre-heated hydrocarbon gas stream into the reactor pool of a liquid metal reactor containing a liquid media; forming a multi-phase flow with a hydrocarbon gas comprising hydrogen and solid carbon at a temperature between 900° C. and 1200° C.; forming a carbon layer on the free surface of the liquid media made up of solid carbon particles which are then displaced into at least one carbon extraction system and at least one recipient for collecting them; and, at the same time, the gas comprising hydrogen leaves the reactor pool through a porous rigid section, being collected at a gas outlet collector from where the gas comprising hydrogen finally leaves the liquid metal reactor.Type: GrantFiled: February 1, 2019Date of Patent: September 5, 2023Assignees: UNIVERSIDAD POLITECNICA DE MADRID, KARLSRUHER INSTITUT FÜR TECHNOLOGIEInventors: Alberto Abánades Velasco, Javier Muñoz Antón, José María Martínez-Val Peñalosa, Tobias Geissler, Leonid Stoppel, Benjamin Dietrich, Michael Plevan, Thomas Wetzel
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Publication number: 20230213703Abstract: The invention relates to an assembly for optical coupling and for mode-selective separation or overlaying of optical fields, to the use thereof and to a method for producing a waveguide-based optical coupling element (10) which is designed for mode-selective separation or overlaying of optical fields at a further optical coupling point (410) of an optical component (400).Type: ApplicationFiled: April 8, 2021Publication date: July 6, 2023Applicant: Karlsruher Institut für TechnologieInventors: Aleksandar Nesic, Matthias Blaicher, Christian Koos
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Publication number: 20230204258Abstract: The invention relates to an apparatus (112) and to a method (210) for generating cryogenic temperatures.Type: ApplicationFiled: April 22, 2021Publication date: June 29, 2023Applicant: Karlsruher Institut für TechnologieInventors: Steffen Grohmann, Eugen Shabagin, David Gomse
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Publication number: 20230155363Abstract: The invention relates to a power supply (110, 110? . . . ) for transporting electrical energy from an energy source (144) to a device (148) or from the device (148) to the energy source (144), the energy source (144) being arranged in a warm region (142) and the device (148) being arranged in a cold region (146). The power supply (110, 110?) has a stack (118) comprising at least two films (120, 120? . . . ), each film (120, 120? . . . ) comprising an electrically conductive material which is designed to transport the electrical energy, ach film (120, 120? . . . ) having an electrical connection which is designed to receive the electrical energy or to deliver the electrical energy, and each film (120, 120? . . . ) comprising a plurality of flow channels (128) for conveying a fluid stream, and the fluid stream comprising a refrigerant mixture or a gas stream to be cooled or a gas stream to be liquefied. The films (120, 120?, . . .Type: ApplicationFiled: April 22, 2021Publication date: May 18, 2023Applicant: Karlsruher Institut für TechnologieInventors: Steffen Grohmann, Eugen Shabagin, David Gomse, Heinz Lambach, Georg Rabsch, Thomas Gietzelt, Michael Stamm, Cornelia Schorle
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Publication number: 20230120780Abstract: The invention relates to a method and to an assembly (200) for localizing an optical coupling point (11) and to a method for producing a microstructure (100) at the optical coupling point (11).Type: ApplicationFiled: March 4, 2021Publication date: April 20, 2023Applicant: Karlsruher Institut für TechnologieInventors: Matthias Blaicher, Philipp-Immanuel Dietrich, Christian Koos
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Patent number: 11629049Abstract: The present invention relates to a method for producing a molded body (10), comprising the following steps: a) providing a molding tool (40) which has at least one receptacle (12) in which at least one material (30) which comprises at least one shape-memory material (31) is introduced, wherein the shape-memory material (31) is present in a first state (111), wherein the material (30) at least partially fills the receptacle (12) of the molding tool (40) in such a manner that said material adjoins at least one surface of the receptacle (12); b) creating a molded body (10) in the receptacle (12) of the molding tool (40) from the material (30), wherein the shape-memory material (31) is present in a second state (112), wherein a form (11) is embossed into the molded body (10) during the second state (112); c) transferring the shape-memory material (31) to a third state (113), wherein the molded body (10) can be deformed during the third state (113) in such a manner that the molded body (10) is demolded from theType: GrantFiled: May 24, 2019Date of Patent: April 18, 2023Assignee: Karlsruher Institut fur TechnologieInventors: Norbert Schneider, Christian Koos, Matthias Worgull, Philipp-Immanuel Dietrich
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Patent number: 11474019Abstract: A method and apparatus for determining a concentration of aerosol particles in a carrier gas. The method comprises providing an aerosol having aerosol particles in a carrier gas comprising at least one condensable component; introducing at least part of the aerosol into a chamber of a pressure-rated vessel, wherein the chamber is delimited by at least one wall adjoining the chamber and set to a temperature which is above a saturation temperature of the at least one condensable component; subsequently removing part of the aerosol from the chamber, as a result of which a decrease in pressure in the chamber occurs, as a result of which the at least one condensable component condenses at least partly on the aerosol particles; and determining a concentration of aerosol particles in the carrier gas during removal of the part of the aerosol from the chamber.Type: GrantFiled: June 21, 2019Date of Patent: October 18, 2022Assignee: KARLSRUHER INSTITUT FUR TECHNOLOGIEInventors: Ottmar Moehler, Benjamin Murray, Michael Adams
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Patent number: 11421154Abstract: A composition for photoluminescence of the chemical formula M2(1-y-z)Yb2yRem2zADO5-xF2x, a method for producing said composition, and uses of said composition are provided.Type: GrantFiled: July 18, 2018Date of Patent: August 23, 2022Assignee: Karlsruher Institut für TechnologieInventors: Dmitry Busko, Guojun Gao, Ian Howard, Bryce Richards, Andrey Turshatov
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Identification of one or more spectral features in a spectrum of a sample for a constituent analysis
Patent number: 11293856Abstract: The invention relates to a method for identifying one or more spectral features in a spectrum (4, 5) of a sample for a constituent analysis of the sample, comprising providing the spectrum (4, 5), predefining an approximation function (6), which is a continuously differentiable mathematical function, respectively forming an (n?1)-th order derivative (7, 8, 9) of the spectrum (4, 5) and of the approximation function (6), wherein the number n>1, generating a correlation matrix (10) from the two (n?1)-th order derivatives (7, 8, 9), and respectively identifying the spectral feature or one of the spectral features in each case as a function of a local extremum (i) of the correlation matrix (10) for at least one extremum (i) of the correlation matrix (10) in order to simplify the constituent analysis of the sample.Type: GrantFiled: November 8, 2018Date of Patent: April 5, 2022Assignees: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V., Karlsruher Institut für Technologie (KIT)Inventors: Julius Krause, Robin Gruna -
Patent number: 11283074Abstract: The present invention is related to an electrode active material for a lithium-ion battery of general formula (I): Li1+x(NiaCobMncMd)1?xO2 wherein x is in the range of from zero to 0.1, a is in the range of from 0.1 to 0.5, b is in the range of from 0.4 to 0.9, c is in the range of from zero to 0.3, d is in the range of from zero to 0.1, M is selected from Al, B, Mg, W, Mo, Ti, Si and Zr, with a+b+c+d=1 and a>c. In addition, the present invention is related to a method of manufacture of electrode active materials and to their use.Type: GrantFiled: September 18, 2018Date of Patent: March 22, 2022Assignees: BASF SE, Karlsruher Institut für TechnologieInventors: Pascal Hartmann, Thomas Michael Ryll, Christoph Erk, Lea De Biasi
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APPARATUS AND METHOD FOR OPTICALLY CHARACTERIZING OR PROCESSING AN OBJECT, AND OBJECT TRANSPORT UNIT
Publication number: 20220043354Abstract: The invention relates to an apparatus (10) and a method for optically characterizing or processing an object (60), and to an object transport unit (55).Type: ApplicationFiled: December 12, 2019Publication date: February 10, 2022Applicants: Karlsruher Institut fur Technologie, Vanguard Photonics GmbHInventors: Matthias Lauermann, Christian Koos, Philipp-Immanuel Dietrich -
Publication number: 20210358880Abstract: The invention relates to a method (110) for producing an electrically conductive connection (112, 112?) on a substrate (114), comprising the following steps: a) providing a substrate (114), wherein the substrate (114) is configured for receiving an electrically conductive connection (112, 112?); b) providing a reservoir of an electrically conductive liquid alloy, wherein the reservoir has a surface at which the alloy has an insulating layer; c) providing a capillary (120) configured for taking up the electrically conductive liquid alloy; d) penetrating of a tip (122) of the capillary (120) under the surface of the reservoir and taking up of a portion of the alloy from the reservoir; and e) applying the portion of the alloy at least partly to the substrate (114) in such a manner that an electrically conductive connection (112, 112?) is formed from the alloy on the substrate (114), wherein the alloy remains on the substrate (114) by adhesion.Type: ApplicationFiled: August 22, 2019Publication date: November 18, 2021Applicant: Karlsruher Institut für TechnologieInventors: Uwe Bog, Michael Hirtz, Harald Fuchs, Jasmin Aghassi, Gabriel Cadilha Marques, Subho Dasgupta, Ben Breitung, Horst Hahn
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Publication number: 20210351708Abstract: The invention relates to a method for controlling a series resonant converter (110), wherein the series resonant converter (110) comprises a primary circuit (112) and a secondary circuit (114), wherein the primary circuit (112) or the secondary circuit (114) comprises a series resonant oscillating circuit (118), wherein the series resonant oscillating circuit (118) comprises at least one capacitance C1 and at least one inductance Li, wherein a link voltage Udc is applied to the primary circuit (112), and wherein the secondary circuit (114) provides an average output current ?out, wherein the control of the series resonant converter (110) is carried out by adjusting an averaged value of the output current ?out using a transfer function, wherein the transfer function is a function of the link voltage Udc, the output voltage UCout, the inductance Li, a switching period tp and a duty cycle D, wherein at least the switching period tp and/or the duty cycle D are adjusted.Type: ApplicationFiled: September 27, 2019Publication date: November 11, 2021Applicant: Karlsruher Institut für TechnologieInventors: Michael Heidinger, Wolfgang Heering, Rainer Kling
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Publication number: 20210179424Abstract: The present invention relates to a method for producing a molded body (10), comprising the following steps: a) providing a molding tool (40) which has at least one receptacle (12) in which at least one material (30) which comprises at least one shape-memory material (31) is introduced, wherein the shape-memory material (31) is present in a first state (111), wherein the material (30) at least partially fills the receptacle (12) of the molding tool (40) in such a manner that said material adjoins at least one surface of the receptacle (12); b) creating a molded body (10) in the receptacle (12) of the molding tool (40) from the material (30), wherein the shape-memory material (31) is present in a second state (112), wherein a form (11) is embossed into the molded body (10) during the second state (112); c) transferring the shape-memory material (31) to a third state (113), wherein the molded body (10) can be deformed during the third state (113) in such a manner that the molded body (10) is demolded from theType: ApplicationFiled: May 24, 2019Publication date: June 17, 2021Applicant: Karlsruher Institut fur TechnologieInventors: Norbert Schneider, Christian Koos, Matthias Worgull, Philipp-Immanuel Dietrich