Patents by Inventor Cornelis Reinder Ronda
Cornelis Reinder Ronda 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: 20170205515Abstract: The invention relates to a characterization apparatus (1) for characterizing scintillator material (3) especially for a PET detector. A first radiation source (2) irradiates the scintillator material with first radiation (4) having a wavelength being smaller than 450 nm. Then, a second radiation source (5) irradiates the scintillator material with pulsed second radiation (6) having a wavelength being larger than 600 nm and having a pulse duration being equal to or smaller than 50 s, wherein a detection device (9) detects third radiation (12) from the scintillator material (3) during and/or after the irradiation by the second radiation. The third radiation depends on the amount of charge carriers trapped at electronic defects of the scintillator material such that it can be used as an indicator for the amount of electronic defects and hence for characterizing the scintillator material. This characterization can be performed relatively fast and in a relatively simple way.Type: ApplicationFiled: July 10, 2015Publication date: July 20, 2017Applicants: KONINKLIJKE PHILIPS N.V., IOFFE PHYSICAL TECHNICAL INSTITUTEInventors: Herfried Karl WIECZOREK, Cornelis Reinder RONDA, Hans-Aloys WISCHMANN, Pavel Georgiyevich BARANOV, Gaik ASATRIAN, Danil Olegovich TOLMACHEV
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Patent number: 9598638Abstract: A gamma photon detector for detecting 511 keV PET radiation includes a scintillator host material doped with cerium. The cerium is present in a concentration of 0.1 to 1.0 mol %. Lower concentrations increase light output but also decay times which can lead to pile up issues. The higher light output enables the read out area to be decreased which reduces the pile up issues. Embodiments with a cerium concentration as low as 0.15 to 0.2 mol % and a read out area as low as 0.1 cm2 are contemplated.Type: GrantFiled: October 31, 2013Date of Patent: March 21, 2017Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Reinder Ronda, Jacobus Gerardus Boerekamp, Sandra Johanna Maria Paula Spoor, Anne-Marie Andree Van Dongen, Herfried Karl Wieczorek, Wilhelmus Cornelis Keur
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Patent number: 9599724Abstract: A gamma radiation detection device (1) includes a scintillator element (2) and an optical detector (3) in optical communication with the scintillator element (2). A plurality of particles or voids (5) are dispersed in the scintillator element (2) which scatter the scintillation light (7), reducing the trapping of scintillation light (7) by multiple reflections.Type: GrantFiled: April 23, 2014Date of Patent: March 21, 2017Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Herfried Karl Wieczorek, Cornelis Reinder Ronda, Jacobus Gerardus Boerekamp
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Patent number: 9580644Abstract: To improve the illumination efficiency of hand-held illumination devices, this invention proposes a new illumination device having the “rolling” function, which is capable of illuminating the target area on which a user is currently focusing and rolling the illuminated area as the user is reading forward or backward. The illumination device comprises two pluralities of lighting elements, an illuminating body and a controller. The controller can control one plurality of lighting elements to emit light to illuminate a part of the illuminating body, which can further deflect the light to a part of the surface of the target.Type: GrantFiled: December 22, 2009Date of Patent: February 28, 2017Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Gongming Wei, Yadong Liu, Henk van Houten, Bo Liu, Hugo Johan Cornelissen, Xiaoyan Zhu, Cornelis Reinder Ronda, Hendrikus albertus adrianus maria de Ruijter
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Publication number: 20160312117Abstract: The present invention relates to a ceramic or polycrystalline scintillator composition represented by the formula (LUy-Gd3-y)(GxAI5-x)O12: Ce; wherein y=1±0.5; wherein x=3±0.25; and wherein Ce is in the range 0.01 mol % to 0.7 mol %. The scintillator composition finds application in the sensitive detection of ionizing radiation and may for example be used in the detection of gamma photons in the field of PET imaging.Type: ApplicationFiled: December 16, 2014Publication date: October 27, 2016Inventors: Herfried Karl WIECZOREK, Cornelis Reinder RONDA, Jacobus Gerardus BOEREKAMP, Anne-Marie Andree VAN DONGEN, Sandra Johanna Maria Paula SPOOR, Daniela BUETTNER, Wilhelmus Cornelis KEUR
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Publication number: 20160146950Abstract: This disclosure relates to luminescent compositions comprising a host matrix sensitized by Ce3+ and showing emission in the ultraviolet range. Typical host matrices include fluorides, sulphates, and phosphates, in particular A(Y1-x-yLuxLay)F4, A(Y1-x-yLuxLay)3F10, BaCa(Y1-x-yLuxLay)2F10, and Ba(Y1-x-yLuxLay)2F8, wherein A=Li, Na, K, Rb, or Cs. One or more of these luminescent compositions may be applied as a ceramic or single crystalline converter for CT, PET or SPECT scanners, or as a luminescent powder layer for x-ray intensifying screens.Type: ApplicationFiled: July 17, 2014Publication date: May 26, 2016Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Reinder RONDA, Georg GREUEL, Thomas JUSTEL, Benjamin HERDEN, Tim KOECKLAR
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Publication number: 20160131769Abstract: The present invention relates to a radiation detection device for detecting gamma or x-ray radiation quanta with improved timing accuracy and improved energy resolution. The radiation detection device finds application in the detection of gamma and x-ray radiation and may be used in the field of PET imaging, and in spectral CT. The radiation detection device includes a semiconductor scintillator element and a photodetector. The photodetector is in optical communication with the scintillator element. The scintillator element has two mutually opposing faces; a cathode is in electrical communication with one of the two faces and an anode is in electrical communication with the other of the two faces.Type: ApplicationFiled: June 26, 2014Publication date: May 12, 2016Inventors: Herfried Karl WIECZOREK, Cornelis Reinder RONDA, Lars Reine WALLENBERG, Maria Elise MESSING, Staffan HANSEN, Bjoern John Andres OEHRSTRAND, Anna Helmi Caroline LINDBERG, Niklas Goesta EHRLIN, Robert Tommy HALLBERG
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Patent number: 9322935Abstract: An imaging system (100) includes a radiation source (110) and a radiation sensitive detector array (116), which includes a scintillator array (118) and a photosensor array (120) optically coupled to the scintillator array, wherein the scintillator array includes Gd2O2S:Pr,Tb,Ce. A method includes detecting radiation with a radiation sensitive detector array (116) of an imaging system (100), wherein the radiation sensitive detector array includes a Gd2O2S:Pr,Tb,Ce based scintillator array (118). A radiation sensitive detector array (116) includes a scintillator array (118) and a photosensor array (120) optically coupled to the scintillator array, wherein the scintillator array includes Gd2O2S:Pr,Tb,Ce, and an amount of Tb3+ in the Gd2O2S:Pr,Tb,Ce is equal to or less than two hundred mole parts per million.Type: GrantFiled: July 3, 2012Date of Patent: April 26, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Reinder Ronda, Norbert Conrads, Henning Ohland, Herbert Schreinemacher
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Patent number: 9322939Abstract: Low cost large area photodetector arrays are provided. In a first embodiment, the photodetectors comprise an inorganic photoelectric conversion material formed in a single thick layer of material. In a second embodiment, the photodetectors comprise a lamination of several thin layers of an inorganic photoelectric conversion material, the combined thickness of which is large enough to absorb incoming x-rays with a high detector quantum efficiency. In a third embodiment, the photodetectors comprise a lamination of several layers of inorganic or organic photoelectric conversion material, wherein each layer has a composite scintillator coating.Type: GrantFiled: August 5, 2010Date of Patent: April 26, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Simha Levene, Ami Altman, Naor Wainer, Cornelis Reinder Ronda, Eliav Itshak Haskal, Dagobert Michel De Leeuw
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Publication number: 20160109587Abstract: The present invention relates to a gamma radiation detection device (1). The gamma radiation detection device (1) comprises a scintillator element (2) and an optical detector (3) in optical communication with the scintillator element (2). A plurality of particles or voids (5) are dispersed in the scintillator element (2) which scatter the scintillation light (7), reducing the trapping of scintillation light (7) by multiple reflections.Type: ApplicationFiled: April 23, 2014Publication date: April 21, 2016Inventors: Herfried Karl WIECZOREK, Cornelis Reinder RONDA, Jacobus Gerardus BOEREKAMP
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Patent number: 9315726Abstract: The present invention relates to mixed oxide materials, methods for their preparation, detectors for ionizing radiation and CT scanners. In particular, a mixed oxide material is proposed having the formula (YwTbx)3Al5-yGayO12:Cez, wherein 0.01?w?0.99, 0.01?x?0.99, 0?y?3.5 and 0.001?z?0.10 and wherein w+x+3*z=1, whereby the mixed oxide material is doped with at least 10 ppm V.Type: GrantFiled: March 21, 2014Date of Patent: April 19, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Reinder Ronda, Jacobus Gerardus Boerekamp, Daniela Buettner, Anne-Marie Andree Van Dongen, Herfried Karl Wieczorek, Sandra Johanna Maria Paula Spoor, Silvan Djohan, Wilhelmus Cornelis Keur
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Publication number: 20160024380Abstract: The present invention relates to mixed oxide materials, methods for their preparation, detectors for ionizing radiation and CT scanners. In particular, a mixed oxide material is proposed having the formula (Yw Tbx)3Al5-y GayO12:Cez, wherein 0.01?w?0.99, 0.01?x?0.99, 0?y?3.5 and 0.001?z?0.10 and wherein w+x+3*z=1, whereby the mixed oxide material is doped with at least 10 ppm V.Type: ApplicationFiled: March 21, 2014Publication date: January 28, 2016Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Reinder RONDA, Jacobus Gerardus BOEREKAMP, Daniela BUETTNER, Anne-Marie Andree VAN DONGEN, Herfried Karl WIECZOREK, Sandra Johanna Maria Paula SPOOR, Silvan DJOHAN, Wilhelmus Cornelis KEUR
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Publication number: 20150275080Abstract: The present invention relates to a scintillator material comprising a scintillator host material doped with cerium. The scintillator host material is at least one of the group comprising i) garnets ii) CaGa2S4 iii) SrGa2S4 iv) BaGa2S4 v) CaS vi) SrS; and the amount of ceriumis controlled in the range 0.1 mol % to 1.0 mol %. The material may be used in gamma photon detection, in a gamma photon detector and as such in a PET imaging system.Type: ApplicationFiled: October 31, 2013Publication date: October 1, 2015Inventors: Cornelis Reinder Ronda, Jacobus Gerardus Boerekamp, Sandra Johanna Maria Paula Spoor, Anne-Marie Andree Van Dongen, Herfried Karl Wieczorek, Wilhelmus Cornelis Keur
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Patent number: 9140808Abstract: A vertical radiation sensitive detector array (114) includes at least one detector leaf (118). The detector leaf includes a scintillator array (210, 502, 807, 907), including, at least, a top side (212) which receives radiation, a bottom side (218) and a rear side (214) and a photo-sensor circuit board (200, 803, 903), including a photo-sensitive region (202, 508, 803, 903), optically coupled to the rear side of the scintillator array. The detector leaf further includes processing electronics (406) disposed below the scintillator array, a flexible circuit board (220) electrically coupling the photo-sensitive region and the processing electronics, and a radiation shield (236) disposed below the bottom of the scintillator array, between the scintillator and the processing electronics, thereby shielding the processing electronics from residual radiation passing through the scintillator array. Some embodiments incorporate rare earth iodides such as SrI 2 (Eu).Type: GrantFiled: January 30, 2012Date of Patent: September 22, 2015Assignee: Koninklijke Philips N.V.Inventors: Cornelis Reinder Ronda, Simha Levene, Raz Carmi, Naor Wainer, Amir Livne, Roman Shiriaev
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CT detector including multi-layer fluorescent tape scintillator with switchable spectral sensitivity
Patent number: 8981311Abstract: A scintillator element (114) comprising uncured scintillator material (112) is formed and optically cured to generate a cured scintillator element (122, 122?). The uncured scintillator material suitably combines at least a scintillator material powder and an uncured polymeric host. In a reel to reel process, a flexible array of optical detectors is transferred from a source reel (100) to a take-up reel (106) and the uncured scintillator material (112) is disposed on the flexible array and optically cured during said transfer. Such detector layers (31, 32, 33, 34, 35) are stackable to define a multi-layer computed tomography (CT) detector array (20). Detector element channels (50, 50?, 50?) include a preamplifier (52) and switching circuitry (54, 54?, 54?) having a first mode connecting the preamplifier with at least first detector array layers (31, 32) and a second mode connecting the preamplifier with at least second detector array layers (33, 34, 35).Type: GrantFiled: April 25, 2011Date of Patent: March 17, 2015Assignee: Koninklijke Philips N.V.Inventors: Simha Levene, Naor Wainer, Amiaz Altman, Rafael Goshen, Cornelis Reinder Ronda -
Patent number: 8907292Abstract: A tungstate-based scintillating material and a method for using a tungstate-based scintillating material is provided. In addition, a radiation detector and an imaging device incorporating a tungstate-based scintillating material are provided.Type: GrantFiled: December 16, 2010Date of Patent: December 9, 2014Assignee: Koninklijke Philips N.V.Inventors: Thomas Juestel, Cornelis Reinder Ronda
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Publication number: 20140321617Abstract: The invention relates to a detection apparatus for detecting radiation. The detection apparatus comprises a GOS material (20) for generating scintillation light depending on the detected radiation (25), an optical filter (24) for reducing the intensity of a part of the scintillation light having a wavelength being larger than 650 nm, and a detection unit (21) for detecting the filtered scintillation light. Because of the filtering procedure relatively slow components, i.e. components corresponding to a relatively large decay time, of the scintillation light weakly constribute to the detection process or are not detected at all by the detection unit, thereby increasing the temporal resolution of the detection apparatus. The resulting fast detection apparatus can be suitable for kVp-switching computed tomography systems.Type: ApplicationFiled: November 23, 2012Publication date: October 30, 2014Applicant: Koninklijke Philips N.V.Inventors: Cornelis Reinder Ronda, Roland Proksa, Axel Thran
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Publication number: 20140301897Abstract: The invention relates to the treatment of a medium, particularly to the purification of water, air, or surfaces. A photo-active layer (120) is disposed on an energy-transfer surface (111) of a substrate (110). Thus light energy transfer from said substrate (110) to the photoactive layer (120) is directly achieved without an intermediate passage through the medium. The substrate (110) may preferably be a waveguide from which light energy is transferred into the photoactive layer (120) via evanescent waves. Moreover, the optical coupling between the substrate (110) and the photoactive layer (120) may spatially vary.Type: ApplicationFiled: October 26, 2011Publication date: October 9, 2014Inventors: Eefje Janet Arts-Hornix, Abraham Rudolf Balkenende, Cornelis Reinder Ronda
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Patent number: 8847177Abstract: The present invention relates to a luminescent solar concentrator for a solar cell, comprising a collector with a luminescent substrate, and a wavelength selective filter, wherein the wavelength selective filter is arranged above the surface of the collector, wherein the luminescent substrate has an absorption edge which corresponds to a wavelength ?ex and emits radiation around a wavelength ?em, wherein the selective filter has a refractive-index contrast ?n with a negative or zero dispersion, and wherein the wavelength selective filter is designed to keep the emitted radiation inside the collector while shifting the reflection band of the incident radiation to angles ?25° and/or to narrow the reflection band to a range of ?10°.Type: GrantFiled: November 17, 2010Date of Patent: September 30, 2014Assignee: Koninklijke Philips N.V.Inventors: Dirk Kornelis Gerhardus De Boer, Cornelis Reinder Ronda, Dirk Jan Broer, Hugo Johan Cornelissen
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Patent number: 8835875Abstract: To overcome the disadvantages introduced by using UV sensors to detect the intensity of UV light in water purification apparatuses, a novel detection apparatus to “visualize” the quality of water in the form of visible light, instead of digitizing the intensity of UV light includes s a first detection window, coated with a first material for converting a received first ultraviolet light into a first visible light. The first ultraviolet light is emitted from an ultraviolet light source and traverses the liquid, and the detection apparatus further mixes the first visible light with second visible light to generate a third visible light. The different color of the third visible light can represent the different quality of the water.Type: GrantFiled: January 4, 2011Date of Patent: September 16, 2014Assignee: Koninklijke Philips N.V.Inventors: Jun She, Levinus Pieter Bakker, Cornelis Reinder Ronda