Patents by Inventor Johannes Franciscus Maria Cillessen
Johannes Franciscus Maria Cillessen 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: 8506130Abstract: The present invention relates to an optical element for a light emitting device, wherein the optical element comprises a sintered ceramic body (3) comprising a wavelength converting layer (4) and a scattering layer (5), and to a method of manufacturing thereof. More specifically, the invention relates to an optical element, comprising a sintered ceramic body (3) of a first layer (4) and a second layer (5) arranged on the first layer, wherein the first layer comprises a wavelength converting material, the porosity of the second layer is higher than the porosity of the first layer, and pores in the second layer are arranged to provide scattering of a light beam.Type: GrantFiled: July 15, 2009Date of Patent: August 13, 2013Assignee: Koninklijke Philips N.V.Inventors: Johannes Franciscus Maria Cillessen, Henricus Albertus Maria Van Hal, Hendrik Johannes Boudewijn Jagt, Oliver Jens Steigelmann
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Publication number: 20130200782Abstract: The invention provides a light-emitting arrangement comprising: a light source adapted to emit light of a first wavelength; a wavelength converting member comprising an organic wavelength converting material adapted to receive light of said first wavelength and to convert at least part of the received light to light of a second wavelength, said wavelength converting member and said light source being mutually spaced apart; and a sealing structure at least partially surrounding said wavelength converting member to form a sealed cavity containing at least said wavelength converting member, the gas pressure within said sealed cavity being 1*10?5 bar (1 Pa) or less. At such pressure, the organic phosphor has been found to have particularly good stability, thus resulting in a longer life time of the phosphor.Type: ApplicationFiled: October 3, 2011Publication date: August 8, 2013Applicant: Koninklijke Philips Electronics N.V.Inventors: Rifat Ata Mustafa Hikmet, Johannes Franciscus Maria Cillessen
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Publication number: 20130187537Abstract: The invention provides a light-emitting arrangement, comprising: a light source adapted to emit light of a first wavelength; a wavelength converting member comprising an organic wavelength converting compound adapted to receive light of said first wavelength and to convert at least part of the received light to light of a second wavelength, said wavelength converting member and said light source being mutually spaced apart; and a sealing structure at least partially surrounding said wavelength converting member to form a sealed cavity containing at least said wavelength converting member, said sealed cavity containing an inert gas and oxygen gas, the concentration of oxygen gas being in the range of from 0.05 to 3% based on the total volume within said sealed cavity. An oxygen concentration in this range has been found to have very limited influence on the life time of the organic wavelength converting compound.Type: ApplicationFiled: September 20, 2011Publication date: July 25, 2013Applicant: Koninklijke Philips Electronics N.V.Inventors: Rifat Ata Mustafa Hikmet, Johannes Franciscus Maria Cillessen, René Theodorus Wegh
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Publication number: 20130175920Abstract: The invention provides a light-emitting arrangement (100, 200, 300), comprising: a light source (101, 201, 301) adapted to emit light of a first wavelength; a wavelength converting member (106, 206, 306) comprising a wavelength converting material adapted to receive light of said first wavelength and to convert at least part of the received light to light of a second wavelength; a sealing structure (103) at least partially surrounding said wavelength converting member to form a sealed cavity (105, 205, 305) containing at least said wavelength converting member, said cavity containing a controlled atmosphere; and a getter material (108, 208, 308) arranged within said sealed cavity, wherein said getter material is adapted to operate in the presence of water and/or produces water as a reaction product. Such getter materials have high capacity for removal of oxygen from the atmosphere within the sealed cavity, such that a low oxygen concentration can be maintained within the cavity.Type: ApplicationFiled: September 19, 2011Publication date: July 11, 2013Applicant: Koninklijk Philips Electronics N.V.Inventors: Rifat Ata Mustafa Hikmet, Johannes Franciscus Maria Cillessen
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Publication number: 20130092969Abstract: This invention relates to a light emitting diode device (100) including an outer casing (102), a light emitting diode element (114), which includes at least one light emitting diode (114a), arranged within the outer casing, a light outlet member (108) constituting a part of the outer casing, a sealed cavity (104) containing a controlled atmosphere, and a seal (110) arranged to seal the cavity. The light emitting diode device further comprises a remote organic phosphor element (116) arranged in the sealed cavity.Type: ApplicationFiled: June 30, 2011Publication date: April 18, 2013Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Rifat Ata Mustafa Hikmet, Jan Cornelis Kriege, Johannes Franciscus Maria Cillessen, René Theodorus Wegh, Pieter Joseph Clara Van Der Wel, Rene Maarten Arjan Driessens
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Publication number: 20130044457Abstract: The invention relates to a lighting apparatus comprising a conversion material (2) for converting primary light (4) into secondary light (5), wherein the conversion material (2) comprises converting photolummescent material (15), which degrades to non-converting photolummescent material over time when the conversion material (2) is illuminated by the primary light (4). The conversion material (2) is adapted such that, when the conversion material (2) is illuminated by the primary light (4), the relative decrease in concentration of the converting photolummescent material (15) within the conversion material (2) is larger than the relative decrease in intensity of the secondary light (5). This allows the lighting apparatus to provide an only slightly reduced absorbance of the primary light, even if a large part of the photolummescent material has been bleached, and thus a longer lifetime, with the same or a slightly reduced intensity of the secondary light.Type: ApplicationFiled: March 3, 2011Publication date: February 21, 2013Applicant: KONNINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Rifat Ata Mustafa Hikmet, Jan Cornelis Kriege, Johannes Franciscus Maria Cillessen, René Theodorus Wegh
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Publication number: 20120063118Abstract: The invention relates to a method for post-processing luminescent ceramic bodies (3). The method includes the steps of adding to a container a predefined amount of luminescent ceramic bodies (3) and grinding the luminescent ceramic bodies (3) in the container until edges (5) of the luminescent ceramic bodies (3) are chamfered. Chamfering the edges (5) increases the strength of the bodies (3) and decreases their susceptibility for damage, thereby reducing the chance of chipping.Type: ApplicationFiled: May 18, 2010Publication date: March 15, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Johannes Franciscus Maria Cillessen, Petrus Cornelis Paulus Bouten
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Publication number: 20110116263Abstract: The present invention relates to an optical element for a light emitting device, wherein the optical element comprises a sintered ceramic body (3) comprising a wavelength converting layer (4) and a scattering layer (5), and to a method of manufacturing thereof. More specifically, the invention relates to an optical element, comprising a sintered ceramic body (3) of a first layer (4) and a second layer (5) arranged on the first layer, wherein the first layer comprises a wavelength converting material, the porosity of the second layer is higher than the porosity of the first layer, and pores in the second layer are arranged to provide scattering of a light beam.Type: ApplicationFiled: July 15, 2009Publication date: May 19, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Johannes Franciscus Maria Cillessen, Henricus Albertus Maria Van Hal, Hendrik Johannes Boudewijn Jagt, Oliver Jens Steigelmann
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Patent number: 7521869Abstract: An electric discharge lamp comprising: a light-transmissive ceramic discharge vessel (1); a first and a second current conductor (2,3) entering the discharge vessel (1)and each supporting an electrode (4,5) in the discharge vessel (1); an ionizable filling comprising a rare gas and a metal halide in the discharge vessel (1); at least the first current conductor (2) within the discharge vessel (1) being halide-resistant, characterized in that the first current conductor (2) at least substantially comprises a material with an at least substantially isotropic coefficient of thermal expansion, said material preferably being chosen from the group of YpSi3Xq, wherein Y is chosen from Mo, W and Ta and X is B, Al, N or C with 4<p:5 5 and 0<q<1. More preferably, said material is of the composition Mo6(Six, Moi-X)4(Cy, Si1-y)6 with 0.10:5 x<0.55 and 0.15<y:S 0.40.Type: GrantFiled: June 28, 2004Date of Patent: April 21, 2009Assignee: Koninklijke Philips Electronics, N.V.Inventors: Govert Nieuwland, Johannes Franciscus Maria Cillessen, Henricus Albertus Maria Van Hal
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Patent number: 6992430Abstract: An electric discharge lamp comprising: a light-transmissive ceramic lamp vessel (1); a first and a second current conductor (2,3) entering the lamp vessel (1), and each supporting an electrode (4,5) in the lamp vessel (1); an ionizable filling comprising a rare gas and a metal halide in the lamp vessel (1); at least the first current conductor (2) within the lamp vessel (1) being halide-resistant, characterized in that the first current conductor (2) at least substantially comprises a material with an at least substantially isotropic coefficient of thermal expansion, said material preferably being chosen from the group of pentamolybdenum boride disilicide, pentamolybdenum diboride silicide, or a combination of these two materials.Type: GrantFiled: December 18, 2002Date of Patent: January 31, 2006Assignee: Koninklijke Philips Electronics N.V.Inventors: Johannes Franciscus Maria Cillessen, Henricus Albertus Maria Van Hal