Patents by Inventor Franz Pfeiffer
Franz Pfeiffer 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: 20170319149Abstract: The invention relates to a source-detector arrangement (11) of an X-ray apparatus (10) for grating based phase contrast computed tomography. The source-detector arrangement comprises an X-ray source (12) adapted for rotational movement around a rotation axis (R) relative to an object (140) and adapted for emittance of an X-ray beam of coherent or quasi-coherent radiation in a line pattern (21); and an X-ray detection system (16) including a first grating element (24) and a second grating element (26) and a detector element (6); wherein the line pattern of the radiation and a grating direction of the grating elements are arranged orthogonal to the rotation axis; and wherein the first grating element has a first grating pitch varied dependent on a cone angle (?) of the X-ray beam and/or the second grating element has a second grating pitch varied dependent on the cone angle of the X-ray beam.Type: ApplicationFiled: November 10, 2015Publication date: November 9, 2017Inventors: THOMAS KOEHLER, EWALD ROESSL, ROLF KARL OTTO BEHLING, PETER BENJAMIN THEODOR NOEL, FRANZ PFEIFFER
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Publication number: 20170154226Abstract: The invention relates to a driver assistance system for a motor vehicle, comprising an environment camera for generating image data, which represent the environment of the motor vehicle, and comprising a control and evaluation unit, wherein the control and evaluation unit is designed to evaluate the image data and detect objects in such a way that partially transparent regions are detected in the case of primary objects, in particular primary vehicles, in the environment of the motor vehicle.Type: ApplicationFiled: February 14, 2017Publication date: June 1, 2017Applicant: Conti Temic microelectronic GmbHInventors: Urban Meis, Markus Gressmann, Franz Pfeiffer, Christian Wolbold
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Patent number: 9557280Abstract: An X-ray tomography device for providing a 3D image of a sample comprising an X-ray source, a cell, a photon detector and a processing unit. The processing unit computes the 3D image on the basis of the images corresponding to a plurality of cell angles. The device further comprises a first and a second gratings having a grating period lower than 200 nm, and a microscope between the second grating and the detector.Type: GrantFiled: June 1, 2012Date of Patent: January 31, 2017Assignees: TOTAL SA, UNIVERSITE DE PAU ET DES PAYS DE L'ADOURInventors: Franz Pfeiffer, Patrice Creux, Gérald Hamon
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Patent number: 9480447Abstract: Grating interferometer comprising inclined phase grating structures, method for increasing the definition of phase contrast images of interferometers or in applications which are based on the Talbot effect, using inclined phase grating structures, phase gratings wherein the grating structures are positioned at angles on the substrate of the phase grating, method for producing grating structures which are positioned at angles on the substrate of the phase grating, and corresponding uses.Type: GrantFiled: June 15, 2011Date of Patent: November 1, 2016Assignee: KARLSRUHER INSTITUT FUER TECHNOLOGIEInventors: Juergen Mohr, Franz Pfeiffer, Elena Reznikova, Vladimir Nazmov
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Patent number: 9230703Abstract: Gratings for analyzing the interference image in interferometers for phase contrast X-ray tomography, comprising a carrier and grating webs produced from at least two different materials, method for producing the same and use thereof.Type: GrantFiled: May 16, 2011Date of Patent: January 5, 2016Assignee: KARLSRUHER INSTITUT FUER TECHNOLOGIEInventors: Juergen Mohr, Joachim Schulz, Elena Reznikova, Franz Pfeiffer
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Publication number: 20140105353Abstract: An X-ray tomography device for providing a 3D image of a sample comprising an X-ray source, a cell, a photon detector and a processing unit. The processing unit computes the 3D image on the basis of the images corresponding to a plurality of cell angles. The device further comprises a first and a second gratings having a grating period lower than 200 nm, and a microscope between the second grating and the detector.Type: ApplicationFiled: June 1, 2012Publication date: April 17, 2014Applicants: UNIVERSITE DE PAU ET DES PAYS DE L'ADOUR, TOTAL SAInventors: Franz Pfeiffer, Patrice Creux, Gérald Hamon
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Patent number: 8483781Abstract: A cover for an apparatus including a substrate defining the cover and having an exterior surface; a layer over the exterior surface of the substrate; a first portion of the substrate, underlying the layer, having a first composition and defining a first portion of the cover; a second portion of the substrate, underlying the layer, having a second composition and defining a second portion of the cover; wherein the first portion of the cover and the second portion of the cover are substantially opaque in exterior ambient lighting and the second portion of the cover is translucent to backlighting.Type: GrantFiled: June 25, 2009Date of Patent: July 9, 2013Assignee: Nokia CorporationInventors: Soilikki Kotanen, Kirsi Pentikainen, Marko Hemmila, Eero Suontila, Tim Sobig, Ulrich Buschmann, Sandra Kimmig, Franz Pfeiffer, Gunnel Gustaver, Daniel Tocha
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Publication number: 20130148780Abstract: Grating interferometer comprising inclined phase grating structures, method for increasing the definition of phase contrast images of interferometers or in applications which are based on the Talbot effect, using inclined phase grating structures, phase gratings wherein the grating structures are positioned at angles on the substrate of the phase grating, method for producing grating structures which are positioned at angles on the substrate of the phase grating, and corresponding uses.Type: ApplicationFiled: June 15, 2011Publication date: June 13, 2013Inventors: Juergen Mohr, Franz Pfeiffer, Elena Reznikova, Vladimir Nazmov
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Publication number: 20130148788Abstract: Gratings for analyzing the interference image in interferometers for phase contrast X-ray tomography, comprising a carrier and grating webs produced from at least two different materials, method for producing the same and use thereof.Type: ApplicationFiled: May 16, 2011Publication date: June 13, 2013Inventors: Juergen Mohr, Joachim Schulz, Elena Reznikova, Franz Pfeiffer
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Patent number: 8374309Abstract: An arrangement and a method are disclosed for projective and/or tomographic phase-contrast imaging using X-ray radiation. In at least one embodiment, one or more phase grids is/are arranged in the beam path such that during a rotation of the at least one X-ray source, the examination object is scanned with different spatial orientations of the grid lines relative to the examination object such that the complete refraction angle, and hence the complete phase shift gradient, can be determined for each X-ray beam from the two scans with differently oriented phase grids in order to be able to show the phase shift of an examination object in terms of projections or in a tomographic image.Type: GrantFiled: January 13, 2010Date of Patent: February 12, 2013Assignees: Siemens Aktiengesellschaft, Paul Scherrer InstitutInventors: Tilman Donath, Martin Hoheisel, Christian David, Eckhard Hempel, Franz Pfeiffer, Stefan Popescu
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Patent number: 8364216Abstract: A user replaceable cover for a flip part of an apparatus, such as a mobile cellular telephone. The user replaceable cover may overlie a display on the exterior of the flip part of the phone. The display is not visible through the cover in ambient lighting. However, when the display is activated the content of the display is visible through the cover.Type: GrantFiled: June 25, 2008Date of Patent: January 29, 2013Assignee: Nokia CorporationInventors: Eero Ilmari Suontila, Franz Pfeiffer, Sandra Kimmig, Tim Sobig, Ulrich Buschmann, Soilikki Kotanen, Kirsi Pentikainen, Marko Hemmila
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Patent number: 8346318Abstract: A user replaceable cover for attachment to and detachment from an apparatus including a first lateral part extending in a first direction, a second lateral part disposed opposite the first lateral part and extending in the first direction, a posterior part extending substantially in a second direction orthogonal to the first direction and joining the first lateral part and the second lateral part and an upper part having extremities and joining at the extremities the first lateral part, the second lateral part and the posterior part, wherein each of the first lateral part, the second lateral part, the posterior part and the upper part has an interior surface and an exterior surface, the user replaceable cover further including a plurality of sidewalls defined by the first lateral part, the second lateral part and the posterior part, wherein the sidewalls terminate at a lower edge for abutment with the apparatus; a face defined by the exterior surface of the upper part; an anterior edge defined at where the fiType: GrantFiled: June 25, 2009Date of Patent: January 1, 2013Assignee: Nokia CorporationInventors: Eero Suontila, Franz Pfeiffer, Sandra Kimmig, Tim Sobig, Ulrich Buschmann
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Patent number: 8165270Abstract: In a method for the production of x-ray-optical gratings composed of a first material forming of periodically arranged grating webs and grating openings, a second material is applied by electroplating to fill the grid openings. The electroplating is continued until a cohesive layer of the second material with uniform height is created over the grating webs with this layer having a large absorption coefficient, the absorption properties of the grating structure of the grating are homogenized, so an improvement of the measurement signals that are generated with this grating is improved. Moreover, the mechanical stability of gratings produced in such a manner is improved.Type: GrantFiled: September 25, 2009Date of Patent: April 24, 2012Assignees: Paul Scherrer Institut, Siemens AktiengesellschaftInventors: Christian David, Tilman Donath, Eckhard Hempel, Martin Hoheisel, Barbara Matthis, Franz Pfeiffer, Stefan Popescu
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Patent number: 8041004Abstract: An interferometer for x-rays, in particular hard x-rays, for obtaining quantitative x-ray images from an object, includes: a) an x-ray source, preferably a standard polychromatic x-ray source, b) a diffractive beam splitter grating other than a Bragg crystal, preferably in transmission geometry, c) a position-sensitive detector with spatially modulated detection sensitivity having a number of individual pixels; d) means for recording the images of the detector in a phase-stepping approach; and e) means for evaluating the intensities for each pixel in a series of images in order to identify the characteristic of the object for each individual pixel as an absorption dominated pixel and/or an differential phase contrast dominated pixel and/or an x-ray scattering dominated pixel.Type: GrantFiled: June 28, 2007Date of Patent: October 18, 2011Assignee: Paul Scherrer InstitutInventors: Christian David, Franz Pfeiffer
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Patent number: 8009796Abstract: An x-ray CT system that generates tomographic phase contrast or dark field exposures, has at least one grating interferometer with three grating structures arranged in series in the radiation direction, with a modular design of the second and third grating structures. The distance between the first grating structure of the x-ray source and the second grating structure (fashioned as a phase grating) of the respective grating/detector modules is adapted, depending on the fan angle, corresponding to a period of the grating structure of the x-ray source projected onto the grating detector module at a respective fan angle (?i).Type: GrantFiled: September 24, 2009Date of Patent: August 30, 2011Assignees: Siemens Aktiengesellschaft, Paul Scherrer InstitutInventors: Stefan Popescu, Christian David, Tilman Donath, Eckhard Hempel, Martin Hoheisel, Franz Pfeiffer
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Patent number: 7983381Abstract: An x-ray CT system for x-ray phase contrast and/or x-ray dark field imaging has a grating interferometer that has a first grating structure that has a number of band-shaped x-ray emission maxima and minima arranged in parallel, the maxima and minima exhibiting a first grating period, a second band-shaped grating structure that produces, as a phase grating, a partial phase offset of x-ray radiation passing therethrough and that exhibits a second grating period, a third band-shaped grating structure with a third grating period with which relative phase shifts of adjacent x-rays and/or their scatter components are detected, and a device for value-based determination of the phase between adjacent x-rays and/or for value-based determination of the spatial intensity curve per detector element perpendicular to the bands of the grating structures. The third grating structure has a grating period that is larger by a factor of 2 to 5 than the grating period of the first grating structure.Type: GrantFiled: September 30, 2009Date of Patent: July 19, 2011Assignees: Siemens Aktiengesellschaft, Paul Scherrer InstitutInventors: Christian David, Tilman Donath, Eckhard Hempel, Martin Hoheisel, Franz Pfeiffer, Stefan Popescu
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Publication number: 20110168590Abstract: A cover for an apparatus including a substrate defining the cover and having an exterior surface; a layer over the exterior surface of the substrate; a first portion of the substrate, underlying the layer, having a first composition and defining a first portion of the cover; a second portion of the substrate, underlying the layer, having a second composition and defining a second portion of the cover; wherein the first portion of the cover and the second portion of the cover are substantially opaque in exterior ambient lighting and the second portion of the cover is translucent to backlighting.Type: ApplicationFiled: June 25, 2009Publication date: July 14, 2011Applicant: Eppendorf AGInventors: Soilikki Kotanen, Kirsi Pentikainen, Marko Hemmila, Eero Sountila, Tim Sobig, Ulrich Buschmann, Sandra Kimmig, Franz Pfeiffer, Gunnel Gustaver, Daniel Tocha
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Publication number: 20110143084Abstract: A user replaceable cover for attachment to and detachment from an apparatus including a first lateral part extending in a first direction, a second lateral part disposed opposite the first lateral part and extending in the first direction, a posterior part extending substantially in a second direction orthogonal to the first direction and joining the first lateral part and the second lateral part and an upper part having extremities and joining at the extremities the first lateral part, the second lateral part and the posterior part, wherein each of the first lateral part, the second lateral part, the posterior part and the upper part has an interior surface and an exterior surface, the user replaceable cover further including a plurality of sidewalls defined by the first lateral part, the second lateral part and the posterior part, wherein the sidewalls terminate at a lower edge for abutment with the apparatus; a face defined by the exterior surface of the upper part; an anterior edge defined at where the fiType: ApplicationFiled: June 25, 2009Publication date: June 16, 2011Inventors: Eero Suontila, Franz Pfeiffer, Sandra Kimmig, Tim Sobig, Ulrich Buschmann
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Patent number: 7889838Abstract: An interferometer for X-rays, in particular hard X-rays, for obtaining quantitative phase contrast images, includes a standard polychromatic X-ray source, a diffractive optical beam splitter other than a Bragg crystal in transmission geometry, and a position-sensitive detector with spatially modulated detection sensitivity.Type: GrantFiled: May 30, 2006Date of Patent: February 15, 2011Assignee: Paul Scherrer InstitutInventors: Christian David, Franz Pfeiffer, Timm Weitkamp
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Patent number: 7817777Abstract: In a focus detector arrangement and method for an x-ray apparatus for generating projection or tomographic phase-contrast images of an examination subject, a beam of coherent x-rays is generated by an anode that has areas of different radiation emission characteristics arranged in bands thereon, that proceed parallel to grid lines of a phase grid that is used to generate the phase-contrast images.Type: GrantFiled: December 6, 2006Date of Patent: October 19, 2010Assignee: Siemens AktiengesellschaftInventors: Joachim Baumann, Christian David, Martin Engelhardt, Jörg Freudenberger, Eckhard Hempel, Martin Hoheisel, Thomas Mertelmeier, Franz Pfeiffer, Stefan Popescu, Manfred Schuster