Patents by Inventor Detlef Uwe Wiechert
Detlef Uwe Wiechert 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: 10205066Abstract: The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18?u??0.25 and 0.42?v??0.54, and wherein the ceramic material comprises a (Y(1-y-q-z),Gdy,Luq, Cez)3(Al(1-x),Gax)5O12 ceramic material, with 0?x?0.6, 0?y?0.5, 0?q<1 and 0.001?z?0.06.Type: GrantFiled: February 15, 2016Date of Patent: February 12, 2019Assignee: Koninklijke Philips N.V.Inventors: Hans-Helmut Bechtel, Oliver Jens Steigelmann, Detlef Uwe Wiechert, Matthias Heidemann
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Publication number: 20180026165Abstract: The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18?u??0.25 and 0.42?v??0.54, and wherein the ceramic material comprises a (Y(1-y-q-z),Gdy,Luq, Cez)3(Al(1-x), Gax)5O12 ceramic material, with 0?x?0.6, 0?y?0.5, 0?q<1 and 0.001?z?0.06.Type: ApplicationFiled: February 15, 2016Publication date: January 25, 2018Inventors: Hans-Helmut Bechtel, Oliver Jens Steigelmann, Detlef Uwe Wiechert, Matthias Heidemann
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Patent number: 9564559Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: GrantFiled: April 29, 2015Date of Patent: February 7, 2017Assignee: Koninklijke Philips N.V.Inventors: Joerg Meyer, Hans-Helmut Bechtel, Walter Mayr, Peter Schmidt, Baby-Seriyati Schreinemacher, Detlef Uwe Wiechert
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Patent number: 9546319Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor having the formula M1?x?y?zZzAaBbCcDdEeN4?nOn:ESxREy (I), with M=selected from the group consisting of Ca, Sr, and Ba; Z=selected from the group consisting of monovalent Na, K, and Rb; A=selected from the group consisting of divalent Mg, Mn, Zn, and Cd; B=selected from the group consisting of trivalent B, Al and Ga; C=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; D=selected from the group consisting of monovalent Li, and Cu; E=selected for the group consisting of P, V, Nb, and Ta; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; 0?x?0.2; 0?y?0.2; 0<x+y?0.4; 0?z<1; 0?n?0.5; 0?a?4 (such as 2?a?3); 0?b?4; 0?c?4; 0?d?4; 0?e?4; a+b+c+d+e=4; and 2a+3b+4c+d+5e=10?y?n+z.Type: GrantFiled: May 9, 2013Date of Patent: January 17, 2017Assignee: Koninklijke Philips N.V.Inventors: Peter Josef Schmidt, Frauke Charlotte Hintze, Philipp Alexander Hubert Pust, Volker Weiler, Cora Sieglinde Hecht, Sebastian Florian Schmiechen, Wolfgang Schnick, Detlef Uwe Wiechert
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Publication number: 20160197246Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b (MN)*c (SiN4/3)*d1 CeO3/2*d2 EuO*x SiO2*y AlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: ApplicationFiled: April 29, 2015Publication date: July 7, 2016Inventors: JOERG MEYER, HANS-HELMUT BECHTEL, WALTER MAYR, PETER SCHMIDT, Baby-Seriyati SCHREINEMACHER, DETLEF UWE WIECHERT
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Publication number: 20150123155Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor having the formula M1?x?y?zZzAaBbCcDdEeN4?nOn:ESxREy (I), with M=selected from the group consisting of Ca, Sr, and Ba; Z=selected from the group consisting of monovalent Na, K, and Rb; A=selected from the group consisting of divalent Mg, Mn, Zn, and Cd; B=selected from the group consisting of trivalent B, Al and Ga; C=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; D=selected from the group consisting of monovalent Li, and Cu; E=selected for the group consisting of P, V, Nb, and Ta; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; 0?x?0.2; 0?y?0.2; 0<x+y?0.4; 0?z<1; 0?n?0.5; 0?a?4 (such as 2?a?3); 0?b?4; 0?c?4; 0?d?4; 0?e?4; a+b+c+d+e=4; and 2a+3b+4c+d+5e=10?y?n+z.Type: ApplicationFiled: May 9, 2013Publication date: May 7, 2015Inventors: Peter Josef Schmidt, Frauke Charlotte Hintze, Philipp Alexander Hubert Pust, Volker Weiler, Cora Sieglinde Hecht, Sebastian Florian Schmiechen, Wolfgang Schnick, Detlef Uwe Wiechert
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Patent number: 9024520Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b (MN)*c (SiN4/3)*d1 CeO3/2*d2 EuO*x SiO2*y AlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: GrantFiled: July 1, 2014Date of Patent: May 5, 2015Assignee: Koninklijke Philips N.V.Inventors: Joerg Meyer, Hans-Helmut Bechtel, Walter Mayr, Peter Schmidt, Baby-Seriyati Schreinemacher, Detlef Uwe Wiechert
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Publication number: 20140319537Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b (MN)*c (SiN4/3)*d1 CeO3/2*d2 EuO*x SiO2*y AlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: ApplicationFiled: July 1, 2014Publication date: October 30, 2014Inventors: JOERG MEYER, HANS-HELMUT BECHTEL, WALTER MAYR, PETER SCHMIDT, Baby-Seriyati SCHREINEMACHER, DETLEF UWE WIECHERT
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Patent number: 8796916Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: GrantFiled: June 14, 2013Date of Patent: August 5, 2014Assignee: Koninklijke Philips N.V.Inventors: Joerg Meyer, Hans-Helmut Bechtel, Walter Mayr, Peter Schmidt, Baby-Seriyati Schreinemacher, Detlef Uwe Wiechert
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Publication number: 20140070693Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2 EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: ApplicationFiled: June 14, 2013Publication date: March 13, 2014Applicant: KONINKLIJKE PHILIPS N.V.Inventors: JOERG MEYER, HANS-HELMUT BECHTEL, WALTER MAYR, PETER SCHMIDT, Baby-Seriyati SCHREINEMACHER, DETLEF UWE WIECHERT
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Patent number: 8668844Abstract: The invention relates to a Gd2O2S:Nd fluorescent material and the use of Nd3+ as emitter in suitable materials.Type: GrantFiled: July 13, 2009Date of Patent: March 11, 2014Assignee: Koninklijke Philips N.V.Inventors: Cornelis Reinder Ronda, Guenter Zeitler, Herbert Schreinemacher, Norbert Conrads, Detlef Uwe Wiechert
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Patent number: 8651723Abstract: The invention relates to GLS-look-alike LED light source (100) comprising two different types of LEDs (21, 22), preferably LEDs emitting with a near UV spectrum and a blue or white spectrum, respectively. The light source (100) further preferably comprises a transparent bulb (40) with a shape similar to an incandescent lamp that is coated by a luminescent layer (30) to achieve a white lamp spectrum. The luminescent layer may contain one or two luminescent compositions.Type: GrantFiled: February 18, 2009Date of Patent: February 18, 2014Assignee: Koninklijke Philips N.V.Inventors: Thomas Juestel, Jacqueline Merikhi, Henning Ohland, Joachim Opitz, Harald Josef Guenther Radermacher, Detlef Uwe Wiechert
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Patent number: 8465166Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b (MN)*c (SiN4/3)*d1 CeO3/2*d2 EuO*x SiO2*y AlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: GrantFiled: April 15, 2008Date of Patent: June 18, 2013Assignee: Konklijke Philips Electronics N.V.Inventors: Joerg Meyer, Hans-Helmut Bechtel, Walter Mayr, Peter Schmidt, Baby-Seriyati Schreinemacher, Detlef Uwe Wiechert
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Publication number: 20110114887Abstract: The invention relates to a Gd2O2S:Nd fluorescent material and the use of Nd3+ as emitter in suitable materials.Type: ApplicationFiled: July 13, 2009Publication date: May 19, 2011Applicant: Koninklijke Phillips Electronics N.V.Inventors: Cornelis Reinder Ronda, Guenter Zeitler, Herbert Schreinemacher, Norbert Conrads, Detlef Uwe Wiechert
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Publication number: 20110037415Abstract: The invention relates to GLS-look-alike LED light source (100) comprising two different types of LEDs (21, 22), preferably LEDs emitting with a near UV spectrum and a blue or white spectrum, respectively. The light source (100) further preferably comprises a transparent bulb (40) with a shape similar to an incandescent lamp that is coated by a luminescent layer (30) to achieve a white lamp spectrum. The luminescent layer may contain one or two luminescent compositions.Type: ApplicationFiled: February 18, 2009Publication date: February 17, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Thomas Juestel, Jacqueline Merikhi, Henning Ohland, Joachim Opitz, Harald Josef Guenther Radermacher, Detlef Uwe Wiechert
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Patent number: 7855497Abstract: A dielectric barrier Xe discharge lamp include discharge vessel with a gas filling containing Xe or a Xe/Ne mixture and a luminescent layer of a UV-B phosphor emitting in the UV-B range 280 to 320 nm. The luminescent layer includes a Gd3+ activated phosphor according to at least one the formulas of (Y1-x-yGdxSy)Al3(BO3)4, (La1-x-yGdxSy)Al3(BO3)4, (La1-x-yGdxSy)B3O6, (Y1-x-y-zGdxSyLuz)PO4, (Y1-x-y-zGdxSyLuz)BO3, (Y1-x-y-zGdxSyLuz)3Al5O12, Me(Y1-x-yGdxSy)F4 (Me=Li, Na, K; S?Bi, Nd, Pr; 0.0<x,z?1.0; 0.0<y?0.1) or a mixture thereof. The luminescent layer may be sensitized by Bi3+, Pr3+ or Nd3+.Type: GrantFiled: April 19, 2005Date of Patent: December 21, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Thomas Juestel, Petra Huppertz, Detlef Uwe Wiechert, Walter Mayr, Heinrich Von Busch
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Publication number: 20100053933Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.Type: ApplicationFiled: April 15, 2008Publication date: March 4, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Joerg Meyer, Hans-Helmut Bechtel, Walter Mayr, Peter Schmidt, Baby-Seriyati Schreinemacher, Detlef Uwe Wiechert
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Patent number: 7671529Abstract: A semiconductor light emitting device is combined with a wavelength converting material. The semiconductor light emitting device is configured to emit first light of a first peak wavelength. The wavelength converting material is configured to absorb at least a portion of the first light and emit second light of a second peak wavelength. In some embodiments, the first wavelength converting material is (Ba1-xSrx)2-y-0.5zSi5N8-zOz:Euy2+ where 0.2<x<0.3, (Ba1-xCax)2-y-0.5zSi5N8-zOz:Euy2+ where 0.01<x<0.2, or M2Si5-aAaN8-aOa:Eu2+ where M=Sr, Ba, Ca; A=Al, B, Ga, Sc; and 0.01<a<0.2.Type: GrantFiled: December 10, 2004Date of Patent: March 2, 2010Assignee: Philips Lumileds Lighting Company, LLCInventors: Gerd O. Mueller, Regina B. Mueller-Mach, Joerg Meyer, Peter J. Schmidt, Detlef Uwe Wiechert
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Patent number: 7649179Abstract: A method for manufacturing a photo-responsive device having a photo-sensitive layer is proposed. The method comprises the following steps: a) providing a clean substrate inside an evacuated evaporation chamber; b) evaporating lead oxide (PbO) from a first crucible to form a seeding layer on the surface of the substrate; c) affecting upon the seeding layer such that only tetragonal lead oxide forms the seeding layer and/or such that the initially grown orthorhombic lead oxide forming the seeding layer is transformed into tetragonal lead oxide; and d) continuing to evaporate lead oxide until the final thickness of the photo-sensitive layer has been deposited onto the substrate. As a result the method yields a photo-responsive device comprising a photo-sensitive layer of lead oxide, which entirely consists of tetragonal lead oxide.Type: GrantFiled: January 26, 2006Date of Patent: January 19, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Matthias Simon, Detlef Uwe Wiechert, Claus Feldmann
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Publication number: 20090223901Abstract: This invention relates to a dielectric barrier Xe discharge lamp comprising an UV-B phosphor. The lamp consists of a gas-tight, discharge vessel with a gas filling containing Xe or a Xe/Ne mixture and is provided with a luminescent layer, which comprises at least one luminescent material emitting in the UV-B range (280 to 320 nm). The luminescent layer comprises a Gd3+ activated phosphor according to the formulas McPO4:Gd, Lal1—XAl3(BO3)4:Gdx, and La1—xB3O6:Gdx which is eventually sensitised by Bi3+, Pr3+ or Nd3+ The advantages of such an UV-B emitting discharge lamp over fluorescent lamps based on a Hg low-pressure discharge are a high power density, 10 instant light, long lifetime, a spectral power distribution which is only determined by the phosphor blend, and an arbitrary burner design.Type: ApplicationFiled: April 19, 2005Publication date: September 10, 2009Applicant: Koninklijke Philips Electronic, N.V.Inventors: Thomas Juestel, Petra Huppertz, Detlef Uwe Wiechert, Walter Mayr, Heinrich Von Busch