Patents by Inventor ONNO JAN WIMMERS
ONNO JAN WIMMERS 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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Patent number: 11614549Abstract: In a conventional radiation capturing device, such as an X-ray device or a CT scanner, a structured surface part, e.g. a scintillator array, is used that is manufactured by mechanical processing, e.g. by dicing and grinding. In order to modifying the scintillating properties of a scintillating material, further manufacturing steps, such as high temperature cycling like sintering etc., are performed in order to restore or at least improve the scintillating properties. This application proposes to form a structured surface part with a particle-in-binder structure containing scintillator or other radiation-relevant particles, using additive manufacturing with a photosensitive mixture to form a layer-wise structure. Therefore, subsequent manufacturing steps, such as sintering, can be omitted. The structured surface part is bendable.Type: GrantFiled: December 10, 2018Date of Patent: March 28, 2023Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Onno Jan Wimmers, Johannes Wilhelmus Maria Jacobs
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Patent number: 11614550Abstract: Dual layer detector (XD) for X-ray imaging, comprising at least two light sensitive surfaces (LSS1,LSS2). The dual layer detector further comprises a first scintillator layer (SL, SL1) including at least one scintillator element (SE) capable of converting X-radiation into light, the element having two faces, an ingress face (S1) for admitting X-radiation into the element (SE) and an egress face (S2) distal from the ingress face (S1), wherein the two faces (S1,S2) are arranged shifted relative to each other, so that a longitudinal axis (LAX) of the scintillator element (SE) is inclined relative to a normal (n) of the layer.Type: GrantFiled: April 4, 2019Date of Patent: March 28, 2023Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Heidrun Steinhauser, Onno Jan Wimmers
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Patent number: 11506802Abstract: The present invention relates to a radiation detector (100) comprising: i) a substrate (110); ii) a sensor, which is coupled to the substrate, the sensor comprising a first array (120) of sensor pixels, a second array (130) of signal read-out elements, and an electronic circuitry which is configured to provide image data based on signals received from the signal read-out elements; iii) a transducer, which is coupled to the substrate and to the sensor, the transducer comprising a third array (140) of subpixels, wherein at least two subpixels are assigned to one sensor pixel; wherein the second array of signal read-out elements and the third array of subpixels correspond to each other; wherein each of the subpixels comprises a radiation conversion material.Type: GrantFiled: September 10, 2019Date of Patent: November 22, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Johannes Wilhelmus Maria Jacobs, Rolf Karl Otto Behling, Roger Steadman Booker, Gereon Vogtmeier, Onno Jan Wimmers
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Patent number: 11428830Abstract: An X-ray detector is positioned relative to an X-ray source such that at least a part of a region between the X-ray source and the X-ray detector is an examination region for accommodating an object. The X-ray source and X-ray detector are controlled by a processing unit in order to operate in a first imaging operation mode, a second imaging operation mode, and/or a third imaging operation mode. The detector comprises a first scintillator, a second scintillator, a first sensor array, and a second sensor array. The first scintillator is disposed over the second scintillator such that X-rays emitted from the X-ray source first encounter the first scintillator and then encounter the second scintillator.Type: GrantFiled: December 31, 2018Date of Patent: August 30, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Peter George Van De Haar, Walter Ruetten, Heidrun Steinhauser, Herman Stegehuis, Onno Jan Wimmers
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Patent number: 11209556Abstract: A radiation detector with first and second scintillator structures is disclosed. The first scintillator structure comprises a plurality of first scintillator pixels. The first scintillator pixels are separated by gaps, which may be filled with a reflective material to achieve an optical separation of the first scintillator pixels. The second scintillator structure is adapted to increase the absorption of radiation and the output of light. Thereto, the second scintillator structure overlaps at least partially the gaps between first scintillator pixels. The second scintillator structure is optically coupled to the first scintillator structure, so that light emitted by the second scintillator structure is fed into first scintillator pixels. The second scintillator structure may be mounted onto the first scintillator structure using additive manufacturing.Type: GrantFiled: August 22, 2018Date of Patent: December 28, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Onno Jan Wimmers, Johannes Wilhelmus Maria Jacobs
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Publication number: 20210356608Abstract: The present invention relates to a radiation detector (100) comprising: i) a substrate (110); ii) a sensor, which is coupled to the substrate, the sensor comprising a first array (120) of sensor pixels, a second array (130) of signal read-out elements, and an electronic circuitry which is configured to provide image data based on signals received from the signal read-out elements; iii) a transducer, which is coupled to the substrate and to the sensor, the transducer comprising a third array (140) of subpixels, wherein at least two subpixels are assigned to one sensor pixel; wherein the second array of signal read-out elements and the third array of subpixels correspond to each other; wherein each of the subpixels comprises a radiation conversion material.Type: ApplicationFiled: September 10, 2019Publication date: November 18, 2021Inventors: JOHANNES WILHELMUS MARIA JACOBS, ROLF KARL OTTO BEHLING, ROGER STEADMAN BOOKER, GEREON VOGTMEIER, ONNO JAN WIMMERS
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Publication number: 20210239860Abstract: Dual layer detector (XD) for X-ray imaging, comprising at least two light sensitive surfaces (LSS1,LSS2). The dual layer detector further comprises a first scintillator layer (SL, SL1) including at least one scintillator element (SE) capable of converting X-radiation into light, the element having two faces, an ingress face (S1) for admitting X-radiation into the element (SE) and an egress face (S2) distal from the ingress face (S1), wherein the two faces (S1,S2) are arranged shifted relative to each other, so that a longitudinal axis (LAX) of the scintillator element (SE) is inclined relative to a normal (n) of the layer.Type: ApplicationFiled: April 4, 2019Publication date: August 5, 2021Applicant: KONINKLIJKE PHILIPS N.V.Inventors: HEIDRUN STEINHAUSER, ONNO JAN WIMMERS
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Publication number: 20210165114Abstract: A radiation detector with first and second scintillator structures is disclosed. The first scintillator structure comprises a plurality of first scintillator pixels. The first scintillator pixels are separated by gaps, which may be filled with a reflective material to achieve an optical separation of the first scintillator pixels. The second scintillator structure is adapted to increase the absorption of radiation and the output of light. Thereto, the second scintillator structure overlaps at least partially the gaps between first scintillator pixels. The second scintillator structure is optically coupled to the first scintillator structure, so that light emitted by the second scintillator structure is fed into first scintillator pixels. The second scintillator structure may be mounted onto the first scintillator structure using additive manufacturing.Type: ApplicationFiled: August 22, 2018Publication date: June 3, 2021Inventors: ONNO JAN WIMMERS, JOHANNES WILHELMUS MARIA JACOBS
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Publication number: 20210080597Abstract: In a conventional radiation capturing device, such as an X-ray device or a CT scanner, a structured surface part, e.g. a scintillator array, is used that is manufactured by mechanical processing, e.g. by dicing and grinding. In order to modifying the scintillating properties of a scintillating material, further manufacturing steps, such as high temperature cycling like sintering etc., are performed in order to restore or at least improve the scintillating properties. This application proposes to form a structured surface part with a particle-in-binder structure containing scintillator or other radiation-relevant particles, using additive manufacturing with a photosensitive mixture to form a layer-wise structure. Therefore, subsequent manufacturing steps, such as sintering, can be omitted. The structured surface part is bendable.Type: ApplicationFiled: December 10, 2018Publication date: March 18, 2021Inventors: ONNO JAN WIMMERS, JOHANNES WILHELMUS MARIA JACOBS
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Publication number: 20210072412Abstract: The present invention relates to a system for X-ray imaging It is explained to position (210) an X-ray detector (10) relative to an X-ray source such that at least a part of a region between the X-ray source and the X-ray detector is an examination region for accommodating an object. The X-ray source and X-ray detector are controlled (220) by a processing unit in order to: operate (230) in a first imaging operation mode; or operate (240) in a second imaging operation mode; or operate (250) in the first imaging mode and in the second imaging mode; or operate (260) in a third imaging operation mode. The detector comprises a first scintillator (20), a second scintillator (30), a first sensor array (40), and a second sensor array (50). The first sensor array is associated with the first scintillator. The first sensor array comprises an array of sensor elements configured to detect optical photons generated in the first scintillator. The second sensor array is associated with the second scintillator.Type: ApplicationFiled: December 31, 2018Publication date: March 11, 2021Inventors: PETER GEORGE VAN DE HAAR, WALTER RUETTEN, HEIDRUN STEINHAUSER, HERMAN STEGEHUIS, ONNO JAN WIMMERS
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Patent number: 10899672Abstract: The invention relates to a ceramic material (14) for generating light when irradiated with radiation, wherein the ceramic material comprises a stack of layers (15, 16) having different compositions and/or different dopings. The ceramic material may be used in a spectral computed tomography (CT) detector, in order to spectrally detect x-rays, or it may be used as a ceramic gain medium of a laser such that temperature gradients and corresponding thermo-mechanical stresses within the gain medium can be reduced.Type: GrantFiled: September 15, 2015Date of Patent: January 26, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Herfried Karl Wieczorek, Jacobus Gerardus Boerekamp, Daniela Buettner, Anne-Marie Andree Van Dongen, Wilhelmus Cornelis Keur, Cornelis Reinder Ronda, Sandra Johanna Maria Paula Spoor, Aneta Wiatrowska, Onno Jan Wimmers
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Publication number: 20190353802Abstract: An X-ray detector (100) and an X-ray imaging apparatus (500) with such X-ray detector (100) are provided. The X-ray detector (100) comprises at least three scintillator layers (102a-e) for converting X-ray radiation into scintillator light (110), and at least two sensor arrays (104a, 104b), each comprising a plurality of photosensitive pixels (108a, 108b) aranged on a bendable substrate (106a, 106b) for receiving scintillator light (110) emitted by at least one of the scintillator layers (102a-e). Therein, a number of the scintillator layers (102a-e) is larger than a number of the sensor arrays (104a, 104b).Type: ApplicationFiled: December 24, 2017Publication date: November 21, 2019Inventors: HEIDRUN STEINHAUSER, ONNO JAN WIMMERS, PETER LEX ALVING, MATTHIAS SIMON
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Patent number: 10371830Abstract: A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta has a multi-layered structure. A rear scintillator layer (5) is configured to emit a burst of scintillation photons responsive to a high-energy radiation quantum being absorbed by the rear scintillator layer (5). A rear photosensor layer (6) attached to a back side of the rear scintillator layer (5) is configured to detect scintillation photons generated in the rear scintillator layer (5). A front scintillator layer (3) arranged in front of the rear scintillator layer (5) opposite the rear photosensor layer (6) is configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (3). A front photosensor layer (2) attached to a front side of the front scintillator layer (3) opposite the rear scintillator layer (5) is configured to detect scintillation photons generated in the front scintillator layer (3).Type: GrantFiled: October 14, 2016Date of Patent: August 6, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Johannes Wilhelmus Maria Jacobs, Jorrit Jorritsma, Heidrun Steinhauser, Onno Jan Wimmers, Peter Lex Alving, Herman Stegehuis, Herfried Karl Wieczorek
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Patent number: 10345456Abstract: The present invention relates to a radiation detector device comprising a first array (120) of a plurality of columnar elements (125), wherein at least one of the columnar elements (125) comprises a base portion (126) and a protruding portion (127), and wherein at least one of the columnar elements (125) comprises a scintillating material and at least one of the columnar elements (125) is configured to generate a light ray by a radiation conversion; and a second array (130) of a plurality of photosensitive elements (135), wherein at least one of the photosensitive elements (135) is assigned to one of the columnar elements (125) and at least one of the photosensitive elements (135) is configured to detected the generated light ray and a read-out electronics circuit (150).Type: GrantFiled: June 1, 2015Date of Patent: July 9, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Onno Jan Wimmers, Johannes Wilhelmus Maria Jacobs, Jacques Jules Van Oekel
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Publication number: 20190092696Abstract: The invention relates to a ceramic material (14) for generating light when irradiated with radiation, wherein the ceramic material comprises a stack of layers (15, 16) having different compositions and/or different dopings. The ceramic material may be used in a spectral computed tomography (CT) detector, in order to spectrally detect x-rays, or it may be used as a ceramic gain medium of a laser such that temperature gradients and corresponding thermo-mechanical stresses within the gain medium can be reduced.Type: ApplicationFiled: September 15, 2015Publication date: March 28, 2019Inventors: Herfried Karl WIECZOREK, Jacobus Gerardus BOEREKAMP, Daniela BUETTNER, Anne-Marie Andree VAN DONGEN, Wilhelmus Cornelis KEUR, Cornelis Reinder RONDA, Sandra Johanna Maria Paula SPOOR, Aneta WIATROWSKA, Onno Jan WIMMERS
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Publication number: 20180275289Abstract: A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta, the radiation detector (8) having a multi-layered structure, comprising: a rear scintillator layer (5) configured to emit a burst of scintillation photons responsive to a high-energy radiation quantum being absorbed by the rear scintillator layer (5); a rear photosensor layer (6) attached to a back side of the rear scintillator layer (5), said rear photosensor layer (6) configured to detect scintillation photons generated in the rear scintillator layer (5); a front scintillator layer (3) arranged in front of the rear scintillator layer (5) opposite the rear photosensor layer (6), said front scintillator layer (3) configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (3); and a front photosensor layer (2) attached to a front side of the front scintillator layer (3) opposite the rear scintillator layer (5), said fronType: ApplicationFiled: October 14, 2016Publication date: September 27, 2018Inventors: Johannes Wilhelmus Maria JACOBS, Jorrit JORRITSMA, Heidrun STEINHAUSER, Onno Jan WIMMERS, Peter Lex ALVING, Herman STEGEHUIS, Herfried Karl WIECZOREK
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Patent number: 9989652Abstract: A method for fabricating a pixelated scintillator including providing a pixelated scintillator-structure and a connection-structure in such a way that the connection-structure is in mechanical contact with two adjacent pixels of the pixelated scintillator-structure. Moreover, the pixelated scintillator-structure includes a first sintering-shrinking-coefficient and the connection-structure includes a second sintering-shrinking-coefficient that is greater than the first sintering-shrinking-coefficient. Further, the pixelated scintillator-structure and the connection-structure are sintered such that a gap between two adjacent pixels of the pixelated scintillator-structure is reduced.Type: GrantFiled: October 30, 2015Date of Patent: June 5, 2018Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Johannes Wilhelmus Maria Jacobs, Onno Jan Wimmers, Jacques Jules Van Oekel
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Publication number: 20170322320Abstract: The invention relates to a method for fabricating a pixelated scintillator wherein a pixelated scintillator-structure (211) and a connection-structure (200) are provided in such a way that the connection-structure is in mechanical contact with two adjacent pixels of the pixelated scintillator-structure. Moreover, the pixelated scintillator-structure comprises a first sintering-shrinking-coefficient and the connection-structure comprises a second sintering-shrinking-coefficient that is greater than the first sintering-shrinking-coefficient. In a further method step, the pixelated scintillator-structure and the connection-structure are sintered such that the gap (212) between the two adjacent pixels (201, 202) of the pixelated scintillator-structure is reduced. Furthermore, the invention also relates to a pixelated scintillator, a detector and an imaging apparatus.Type: ApplicationFiled: October 30, 2015Publication date: November 9, 2017Inventors: JOHANNES WILHELMUS MARIA JACOBS, ONNO JAN WIMMERS, JACQUES JULES VAN OEKEL
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Publication number: 20170139058Abstract: The present invention relates to a radiation detector device comprising a first array (120) of a plurality of columnar elements (125), wherein at least one of the columnar elements (125) comprises a base portion (126) and a protruding portion (127), and wherein at least one of the columnar elements (125) comprises a scintillating material and at least one of the columnar elements (125) is configured to generate a light ray by a radiation conversion; and a second array (130) of a plurality of photosensitive elements (135), wherein at least one of the photosensitive elements (135) is assigned to one of the columnar elements (125) and at least one of the photosensitive elements (135) is configured to detected the generated light ray and a read-out electronics circuit (150).Type: ApplicationFiled: June 1, 2015Publication date: May 18, 2017Inventors: ONNO JAN WIMMERS, JOHANNES WILHELMUS MARIA JACOBS, JACQUES JULES VAN OEKEL