Patents by Inventor Cornelis R. Ronda
Cornelis R. 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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Patent number: 8415629Abstract: A radiation-sensitive detector includes a photosensor layer with one or more photosensor dixels and a composite scintillator layer with one or more scintillator dixels optically coupled to the photosensor layer. The composite scintillator layer is formed from a mixture including a scintillator material having a first refractive index corresponding to a first wavelength and a photo-resist used in micro-electromechanical systems production, having a second refractive index corresponding to the first wavelength. The first and second refractive indices are substantially matched, and the composite scintillator layer produces light having the first wavelength and that is indicative of x-radiation detected thereby.Type: GrantFiled: September 14, 2012Date of Patent: April 9, 2013Assignee: Koninklijke Philips Electronics N.V.Inventors: Simha Levene, Cornelis R. Ronda
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Patent number: 8373130Abstract: A radiation detector (100) includes an array of scintillator pixels (102) in optical communication with a photosensor. The scintillator pixels (102) include a hygroscopic scintillator (104) and one or more hermetic covers (106a, 106b). A desiccant (124) may be disposed between a hermetic cover (106a) and the scintillator (104) or between the hermetic covers (106a, 106b).Type: GrantFiled: October 29, 2008Date of Patent: February 12, 2013Assignee: Koninklijke Philips Electronics N.V.Inventors: Cornelis R. Ronda, Guenter Zeitler, Herbert Schreinemacher
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Publication number: 20130005069Abstract: A radiation-sensitive detector includes a photosensor layer with one or more photosensor dixels and a composite scintillator layer with one or more scintillator dixels optically coupled to the photosensor layer. The composite scintillator layer is formed from a mixture including a scintillator material having a first refractive index corresponding to a first wavelength and a photo-resist used in micro-electromechanical systems production, having a second refractive index corresponding to the first wavelength. The first and second refractive indices are substantially matched, and the composite scintillator layer produces light having the first wavelength and that is indicative of x-radiation detected thereby.Type: ApplicationFiled: September 14, 2012Publication date: January 3, 2013Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Simha LEVENE, Cornelis R. RONDA
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Patent number: 8338790Abstract: A radiation-sensitive detector includes a photosensor elements (122) and a scintillator (116) optically coupled to the photosensor element (122). The scintillator (116) includes a powdered scintillator and a resin mixed with the powdered scintillator. The refractive index mismatch between the powdered scintillator and the resin is less than 7%. In one non-limiting instance, the composite scintillator material may be used to form fiber optic leaves arranged as a high-resolution detector array in conventional or spectral CT.Type: GrantFiled: December 12, 2008Date of Patent: December 25, 2012Assignee: Koninklijke Philips Electronics N.V.Inventors: Simha Levene, Cornelis R. Ronda
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Patent number: 8319185Abstract: A radiation detector (100) includes a scintillator (102), a wavelength shifter (112), and a photodetector (110). The scintillator (102) produces scintillation photons of a first relatively short wavelength, for example in the ultraviolet or deep ultraviolet. The photodetector is sensitive to photons in the visible portion of the spectrum. The wavelength shifter reduces a spectral mismatch between the scintillator (102) and the photodetector (110).Type: GrantFiled: December 5, 2007Date of Patent: November 27, 2012Assignee: Koninklijke Philips Electronics N.V.Inventor: Cornelis R. Ronda
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Patent number: 8294112Abstract: A radiation-sensitive detector includes a photosensor layer with one or more photosensor dixels and a composite scintillator layer with one or more scintillator dixels optically coupled to the photosensor layer. The composite scintillator layer is formed from a mixture including a scintillator material having a first refractive index corresponding to a first wavelength and a photo-resist used in micro-electromechanical systems production, having a second refractive index corresponding to the first wavelength. The first and second refractive indices are substantially matched, and the composite scintillator layer produces light having the first wavelength and that is indicative of x-radiation detected thereby.Type: GrantFiled: August 5, 2009Date of Patent: October 23, 2012Assignee: Koninklijke Philips Electronics N.V.Inventors: Simha Levene, Cornelis R. Ronda
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Publication number: 20110102879Abstract: The invention relates to a window blind (10) with at least one lamella (25) and at least one lighting element (20), wherein the lamella (25) comprises an illuminating body (30), the lighting element (20) injects an artificial light (21) into the illuminating body (30), the illuminating body (30) comprises a light guiding material, configured to transport the artificial light (21), the illuminating body (30) comprises a light extraction means (40), configured to receive and to deflect the artificial light (21) out of the illuminating body (30). The invention discloses, that the light extraction means (40) is embedded within the illuminating body (30), and the light extraction means (40) is controllable, in order to vary the degree of deflection of the artificial light (21).Type: ApplicationFiled: August 18, 2008Publication date: May 5, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Hendrikus A.A.M. De Ruijter, Cornelis R. Ronda, Egbertus H.M. Smits
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Publication number: 20100314546Abstract: A radiation detector (100) includes a scintillator (102), a wavelength shifter (112), and a photodetector (110). The scintillator (102) produces scintillation photons of a first relatively short wavelength, for example in the ultraviolet or deep ultraviolet. The photodetector is sensitive to photons in the visible portion of the spectrum. The wavelength shifter reduces a spectral mismatch between the scintillator (102) and the photodetector (110).Type: ApplicationFiled: December 5, 2007Publication date: December 16, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventor: Cornelis R. Ronda
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Publication number: 20100276600Abstract: A radiation detector (100) includes an array of scintillator pixels (102) in optical communication with a photosensor. The scintillator pixels (102) include a hygroscopic scintillator (104) and one or more hermetic covers (106a, 106b). A desiccant (124) may be disposed between a hermetic cover (106a) and the scintillator (104) or between the hermetic covers (106a, 106b).Type: ApplicationFiled: October 29, 2008Publication date: November 4, 2010Applicant: Koninklijke Philips Electronics N.V.Inventors: Cornelis R. Ronda, Guenter Zeitler, Herbert Schreinemacher
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Publication number: 20100271617Abstract: A vehicle position measurement system (100) and method to determine the (relative) position of a vehicle (110) and an object (120) are proposed. The system comprises at least two light sources (131, 132) capable of emitting light and positioned at a predetermined distance (140) to each other. Furthermore the system comprises at least one detector (150/151, 152) capable of measuring the light emitted. The light emitted by the light sources comprises synchronized light source identification codes. The detector is arranged to determine the position of the vehicle (110) and object (120) on the basis of a phase-difference measurement between the light originating from the individual light sources (131, 132) and a comparison phase. The vehicle (110) may comprise the at least two light sources (131, 132) and the detector (151, 152), while the phase-difference is measured between light reflected from the object (120) and the comparison phase.Type: ApplicationFiled: July 24, 2008Publication date: October 28, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Paulus H.A. Damink, Sel B. Colak, Cornelis R. Ronda, Lorenzo Feri, Tim C.W. Schenk
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Publication number: 20100264322Abstract: A radiation-sensitive detector includes a photosensor elements (122) and a scintillator (116) optically coupled to the photosensor element (122). The scintillator (116) includes a powdered scintillator and a resin mixed with the powdered scintillator. The refractive index mismatch between the powdered scintillator and the resin is less than 7%. In one non-limiting instance, the composite scintillator material may be used to form fiber optic leaves arranged as a high-resolution detector array in conventional or spectral CT.Type: ApplicationFiled: December 12, 2008Publication date: October 21, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Simha Levene, Cornelis R. Ronda
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Publication number: 20100231892Abstract: The invention relates to a method of measuring and/or judging the afterglow in ceramic materials, especially Gd2?2S materials and/or precursor materials by measuring the Eu-, Tb- and/or Yb-content.Type: ApplicationFiled: August 9, 2007Publication date: September 16, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Cornelis R. Ronda, Gunter Zeitler, Herbert Schreinemacher
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Publication number: 20100167909Abstract: A hot axial pressing method for sintering a ceramic powder, particularly doped Gd2O2S, comprise the step of placing a first porous body (7), the ceramic powder (9) and a second porous body (7) into a mould shell (5) supported by a support (13, 14). The ceramic powder (9) is located between the porous bodies (7). Gaseous components are evacuated from the ceramic powder (9) up to an ambient pressure of less than 0.8 bar. The porous body (7) and the ceramic powder (9) are heated to a maximum temperature of at least 900° C. and are applied to a pressure up to a maximum pressure of at least 75 Mpa. According to the invention the variation in time of the heating step and the variation in time of the pressure applying step is adjusted to each other such that the mould shell 5 is held by the porous bodies (7) and/or the ceramic powder (9) in a state where the mould shell (5) and the support (13, 14) are disconnected with respect to each other.Type: ApplicationFiled: December 19, 2007Publication date: July 1, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Guenter ZEITLER, Herbert SCHREINEMACHER, Cornelis R. RONDA
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Publication number: 20100110720Abstract: The invention relates to an illumination device (10) for illuminating a surface (101), with at least one lighting element (20) and an illuminating body (30), wherein the lighting element (20) emits an artificial light (21,21), a housing element (40) comprises the lighting element (20) and supports the illuminating body (30), the illuminating body (30) comprises a transparent light conductive material suitable to illuminate the surface (101) lying subjacent. The invention discloses, that the illuminating body (30) comprises a surface pattern (80), forming a Fresnel-type lens to optically magnify the surface (101).Type: ApplicationFiled: April 14, 2008Publication date: May 6, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Giovanni Cennini, Hugo J. Cornelissen, Cornelis R. Ronda, Yadong Liu
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Publication number: 20100032578Abstract: A radiation-sensitive detector includes a photosensor layer with one or more photosensor dixels and a composite scintillator layer with one or more scintillator dixels optically coupled to the photosensor layer. The composite scintillator layer is formed from a mixture including a scintillator material having a first refractive index corresponding to a first wavelength and a photo-resist used in micro-electromechanical systems production, having a second refractive index corresponding to the first wavelength. The first and second refractive indices are substantially matched, and the composite scintillator layer produces light having the first wavelength and that is indicative of x-radiation detected thereby.Type: ApplicationFiled: August 5, 2009Publication date: February 11, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Simha LEVENE, Cornelis R. RONDA
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Patent number: 6833160Abstract: A metal M is chosen from the group formed by yttrium, aluminum and lanthanum, and a watery solution of a complex of M and an organic chelating agent is added to a suspension of luminescent material, which causes a layer of M2O3 to be deposited on the luminescent material, which is them separated, dried and fired.Type: GrantFiled: May 10, 2002Date of Patent: December 21, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Thomas Jüstel, Jacqueline Merikhi, Hans Nikol, Cornelis R. Ronda
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Patent number: 6525473Abstract: A low-pressure mercury-vapor discharge lamp is provided with a discharge vessel and a first and a second end portion (12a). The discharge vessel encloses a discharge space provided with a filling of mercury and an inert gas in a gastight manner. Each end portion (12a) supports an electrode (20a) arranged in the discharge space. An electrode shield (22a) encompasses at least one of the electrodes (20a) and is made from a ceramic material. Preferably, the electrode shield (22a) is tubular in shape with a lateral slit directed towards the discharge space. The lamp according to the invention has a comparatively low mercury consumption.Type: GrantFiled: November 5, 2001Date of Patent: February 25, 2003Assignee: Koninklijke Phillips Electronics N.V.Inventors: Cornelis J. M. Denissen, Cornelis R. Ronda, Wilhelmus M. P. Van Kemenade, Henricus P. M. Gubbels
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Patent number: 6472811Abstract: A metal M is chosen from the group formed by Y, Al and La, and a watery solution of a complex of M and an organic chelating agent is added to a suspension of luminescent material, which causes a layer of M2O3 to be deposited on the luminescent material, which is then separated, dried, and fired.Type: GrantFiled: August 25, 1999Date of Patent: October 29, 2002Assignee: Koninklijke Philips Electronics N.V.Inventors: Thomas Jüstel, Jacqueline Merikhi, Hans Nikol, Cornelis R. Ronda
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Patent number: 6469434Abstract: Willemite (Zn2SiO4:Mn) is doped with one or more ions selected from the group formed by Gd3+, Eu2+, Co2+, Ce3+, Pr3+, Nd3+, Sm3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+ and Yb3+. This results in a increase in absorption and quantum yield and a decrease of the decay time.Type: GrantFiled: November 10, 1999Date of Patent: October 22, 2002Assignee: Koninklijke Philips Electronics N.V.Inventors: Helmut Bechtel, Thomas Jüstel, Walter Mayr, Hans Nikol, Cornelis R. Ronda
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Publication number: 20020127329Abstract: The invention relates to a method of coating a luminescent material with a layer of a metal oxide M2O3 wherein a metal M is chosen from the group formed by Y, AI and La.Type: ApplicationFiled: May 10, 2002Publication date: September 12, 2002Inventors: Thomas Justel, Jacqueline Merikhi, Hans Nikol, Cornelis R. Ronda