Patents by Inventor Volker Weiler
Volker Weiler 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: 11926775Abstract: This specification discloses methods of enhancing the stability and performance of Eu2+ doped narrow band red emitting phosphors. In one embodiment the resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr4C4 crystal structure type and having a composition of AE1?xLi3?2yAl1+y?zSizO4?4y?zN4y+z:Eux (AE=Ca, Sr, Ba, or a combination thereof, 0<x<0.04, 0?y<1, 0<z<0.05, y+z?1). It is believed that the formal substitution (Al,O)+ by (Si,N)+ reduces the concentration of unwanted Eu3+ and thus enhances properties of the phosphor such as stability and conversion efficiency.Type: GrantFiled: December 4, 2020Date of Patent: March 12, 2024Assignee: Lumileds LLCInventors: Peter Josef Schmidt, Philipp-Jean Strobel, Volker Weiler, Andreas Tücks
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Publication number: 20230002671Abstract: This specification discloses methods of enhancing the stability and performance of Eu2+ doped narrow band red emitting phosphors. In one embodiment the resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr4C4 crystal structure type and having a composition of AE1?xLi3?2yAl1+y?zSizO4?4y?zN4y+z:Eux (AE=Ca, Sr, Ba, or a combination thereof, 0<x<0.04, 0?y<1, 0<z<0.05, y+z?1). It is believed that the formal substitution (Al,O)+ by (Si,N)+ reduces the concentration of unwanted Eu3+ and thus enhances properties of the phosphor such as stability and conversion efficiency.Type: ApplicationFiled: December 4, 2020Publication date: January 5, 2023Applicant: LUMILEDS LLCInventors: Peter Josef SCHMIDT, Philipp-Jean STROBEL, Volker WEILER, Andreas TÜCKS
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Patent number: 11453821Abstract: This specification discloses a method of enhancing the stability and performance of Eu2+ doped narrow band red emitting phosphors. The resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr4C4 crystal structure type and having a composition of AE1?xLi3?2yAl1+2y?zSizO4?4y?zN4y+z:EUx(AE=Ca, Sr, Ba; 0<x<0.04, 0?y<1, 0<z<0.05, y+z?1). It is believed that the formal substitution (Al,O)+ by (Si,N)+ reduces the concentration of unwanted Eu3+ and thus enhances properties of the phosphor such as stability and conversion efficiency.Type: GrantFiled: December 2, 2020Date of Patent: September 27, 2022Assignee: Lumileds LLCInventors: Peter Josef Schmidt, Philipp-Jean Strobel, Volker Weiler, Andreas Tücks
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Patent number: 11101409Abstract: The invention provides a lighting device configured to provide white lighting device light, the lighting device comprising (i) a light source, configured to provide blue light source light, and (ii) a luminescent material element, configured to absorb at least part of the blue light source light and to convert into luminescent material light, wherein the luminescent material element comprises a luminescent material which consists for at least 80 wt. % of a M2-2xEu2xSi5-yAlyOyN8-y phosphor, wherein M comprises one or more of Mg, Ca, Sr, Ba, with a molar ratio of (Mg+Ca+Sr)/(Ba)?0.1, wherein x is in the range of 0.001-0.02, wherein y is in the range of ?0.2, and wherein the white lighting device light comprises said blue light source light and said luminescent material light.Type: GrantFiled: December 17, 2015Date of Patent: August 24, 2021Inventors: Peter Josef Schmidt, Walter Mayr, Volker Weiler, Hans-Helmut Bechtel
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Publication number: 20210171827Abstract: This specification discloses a method of enhancing the stability and performance of Eu2+ doped narrow band red emitting phosphors. The resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr4C4 crystal structure type and having a composition of AE1?xLi3?2yAl1+2y?zSizO4?4y?zN4y+z:EUx(AE=Ca, Sr, Ba; 0<x<0.04, 0?y<1, 0<z<0.05, y+z?1). It is believed that the formal substitution (Al,O)+ by (Si,N)+ reduces the concentration of unwanted Eu3+ and thus enhances properties of the phosphor such as stability and conversion efficiency.Type: ApplicationFiled: December 2, 2020Publication date: June 10, 2021Applicant: Lumileds LLCInventors: Peter Josef SCHMIDT, Philipp-Jean STROBEL, Volker Weiler, Andreas TUCKS
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Patent number: 10611961Abstract: The invention provides a lighting unit (100) comprising a light source (10), configured to generate light source light (11) and a luminescent material (20), configured to convert at least part of the light source light (11) into luminescent material light (51), wherein the luminescent material (20) comprises a phosphor (40), wherein this phosphor comprises an alkaline earth aluminum nitride based material having a cubic crystal structure with T5 supertetrahedra, wherein the T5 supertetrahedra comprise at least Al and N, and wherein the alkaline earth aluminum nitride based material further comprises a luminescent lanthanide incorporated therein.Type: GrantFiled: March 10, 2015Date of Patent: April 7, 2020Assignee: LUMILEDS LLCInventors: Volker Weiler, Peter Josef Schmidt, Philipp Alexander Hubert Pust, Wolfgang Schnick
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Patent number: 10539275Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor selected from the class of M2D2C2-2bBbA2N6:Ln??(I) with M=selected from the group consisting of divalent Ca, Sr, and Ba; D=selected from the group consisting of monovalent Li, divalent Mg, Mn, Zn, Cd, and trivalent Al and Ga; C=selected from the group consisting of monovalent Li and Cu; B=selected from the group consisting of divalent Mg, Zn, Mn and Cd; A=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; Ln=selected from the group consisting of ES and RE; 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; and 0?b?1.Type: GrantFiled: November 5, 2015Date of Patent: January 21, 2020Assignee: Koninklijke Philips N.V.Inventors: Peter Josef Schmidt, Philipp-Jean Strobel, Sebastian Florian Schmiechen, Cora Sieglinde Hecht, Volker Weiler, Wolfgang Schnick
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Patent number: 10158052Abstract: The invention provides a lighting unit comprising a source of blue light, a source of green light, a first source of red light comprising a first red luminescent material, configured to provide red light with a broad band spectral light distribution, and a second source of red light comprising a second red luminescent material, configured to provide red light with a spectral light distribution comprising one or more red emission lines. Especially, the first red luminescent material comprises (Mg,Ca,Sr)AlSiN3:Eu and/or (Ba,Sr,Ca)2Si5-xAlxOxN8-x:Eu, and the second red luminescent material comprises K2SiF6:Mn.Type: GrantFiled: February 2, 2017Date of Patent: December 18, 2018Assignee: Lumileds LLCInventors: Volker Weiler, Peter Josef Schmidt, Hans-Helmut Bechtel
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Patent number: 10153406Abstract: The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase.Type: GrantFiled: July 18, 2016Date of Patent: December 11, 2018Assignee: Lumileds LLCInventors: Volker Weiler, Wolfgang Schnick, Peter Josef Schmidt, Markus Armin Seibald
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Patent number: 9944849Abstract: The invention provides a light emitting diode device comprising a light emitting diode arranged on a substrate and a wavelength converting element. The wavelength converting element contains as a luminescent material a Mn4+-activated fluoride compound having a garnet-type crystal structure. The Mn4+-activated fluoride compound preferably answers the general formula {A3}[B2-x-yMnxMgy](Li3)F12-dOd, in which formula A stands for at least one element selected from the series consisting of Na+ and K+ and B stands for at least one element selected from the series consisting of Al3+, B3+, Sc3+, Fe3+, Cr3+, Ti4+ and In3+, and in which formula x ranges between 0.02 and 0.2, y ranges between 0.0 (and incl. 0.0) and 0.4 and d ranges between 0 (and incl. 0) and 1. Said compound is most preferably {Na3}[Al2-x-yMnxMgy](Li3)F12-dOd.Type: GrantFiled: August 31, 2015Date of Patent: April 17, 2018Assignee: Koninklijke Philips N.V.Inventors: Joerg Meyer, Volker Weiler, Peter J. Schmidt
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Publication number: 20170345975Abstract: The invention provides a lighting device configured to provide white lighting device light, the lighting device comprising (i) a light source, configured to provide blue light source light, and (ii) a luminescent material element, configured to absorb at least part of the blue light source light and to convert into luminescent material light, wherein the luminescent material element comprises a luminescent material which consists for at least 80 wt. % of a M2-2xEu2xSi5-yAlyOyN8-y phosphor, wherein M comprises one or more of Mg, Ca, Sr, Ba, with a molar ratio of (Mg+Ca+Sr)/(Ba)?0.1, wherein x is in the range of 0.001-0.02, wherein y is in the range of ?0.2, and wherein the white lighting device light comprises said blue light source light and said luminescent material light.Type: ApplicationFiled: December 17, 2015Publication date: November 30, 2017Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Peter Josef Schmidt, Walter Mayr, Volker Weiler, Hans-Helmut Bechtel
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Publication number: 20170314745Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor selected from the class of M2D2C2-2bBbA2N6:Ln ??(I) with M=selected from the group consisting of divalent Ca, Sr, and Ba; D=selected from the group consisting of monovalent Li, divalent Mg, Mn, Zn, Cd, and trivalent Al and Ga; C=selected from the group consisting of monovalent Li and Cu; B=selected from the group consisting of divalent Mg, Zn, Mn and Cd; A=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; Ln=selected from the group consisting of ES and RE; 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; and 0?b?1.Type: ApplicationFiled: November 5, 2015Publication date: November 2, 2017Inventors: Peter Josef Schmidt, Philipp-Jean Strobel, Sebastian Florian Schmiechen, Cora Sieglinde Hecht, Volker Weiler, Wolfgang Schnick
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Publication number: 20170162758Abstract: The invention provides a lighting unit comprising a source of blue light, a source of green light, a first source of red light comprising a first red luminescent material, configured to provide red light with a broad band spectral light distribution, and a second source of red light comprising a second red luminescent material, configured to provide red light with a spectral light distribution comprising one or more red emission lines. Especially, the first red luminescent material comprises (Mg,Ca,Sr)AlSiN3:Eu and/or (Ba,Sr,Ca)2Si5-xAlxOxN8-x:Eu, and the second red luminescent material comprises K2SiF6:Mn.Type: ApplicationFiled: February 2, 2017Publication date: June 8, 2017Inventors: Volker Weiler, Peter Josef Schmidt, Hans-Helmut Bechtel
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Patent number: 9580643Abstract: The invention provides a lighting unit comprising a light source, configured to generate light source light and a particulate luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED), wherein the particulate luminescent material comprises particles comprising cores, said cores comprising a phosphor comprising M?xM2-2xAX6 doped with tetravalent manganese, wherein M? comprises an alkaline earth cation, M comprises an alkaline cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein the particles further comprise a metal phosphate based coating, wherein the metal of the metal phosphate based coating is selected from the group consisting of Ti, Si and Al.Type: GrantFiled: February 13, 2013Date of Patent: February 28, 2017Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Volker Weiler, Peter Josef Schmidt
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Patent number: 9564557Abstract: The invention provides a lighting unit comprising a source of blue light, a source of green light, a first source of red light comprising a first red luminescent material, configured to provide red light with a broad band spectral light distribution, and a second source of red light comprising a second red luminescent material, configured to provide red light with a spectral light distribution comprising one or more red emission lines. Especially, the first red luminescent material comprises (Mg,Ca,Sr)AlSiN3:Eu and/or (Ba,Sr,Ca)2Si5-xAlxOxN8-x:Eu, and the second red luminescent material comprises K2SiF6:Mn.Type: GrantFiled: October 22, 2013Date of Patent: February 7, 2017Assignee: Koninklijke Philips N.V.Inventors: Volker Weiler, Peter Josef Schmidt, Hans-Helmut Bechtel
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Publication number: 20170015902Abstract: The invention provides a lighting unit (100) comprising a light source (10), configured to generate light source light (11) and a luminescent material (20), configured to convert at least part of the light source light (11) into luminescent material light (51), wherein the luminescent material (20) comprises a phosphor (40), wherein this phosphor comprises an alkaline earth aluminum nitride based material having a cubic crystal structure with T5 supertetrahedra, wherein the T5 supertetrahedra comprise at least Al and N, and wherein the alkaline earth aluminum nitride based material further comprises a luminescent lanthanide incorporated therein.Type: ApplicationFiled: March 10, 2015Publication date: January 19, 2017Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Volker Weiler, Peter Josef Schmidt, Philipp Alexander Hubert Pust, Wolfgang Schnick
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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: 20160329471Abstract: The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase.Type: ApplicationFiled: July 18, 2016Publication date: November 10, 2016Inventors: Volker Weiler, Wolfgang Schnick, Peter Josef Schmidt, Markus Armin Seibald
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Patent number: 9422471Abstract: The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase.Type: GrantFiled: December 6, 2012Date of Patent: August 23, 2016Assignee: Koninklijke Philips N.V.Inventors: Volker Weiler, Wolfgang Schnick, Peter Josef Schmidt, Markus Armin Seibald
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Publication number: 20150372199Abstract: The invention provides a light emitting diode device comprising a light emitting diode (1, 11) arranged on a substrate (2, 12) and a wavelength converting element (3, 13, 14). The wavelength converting element (3, 13) contains as a luminescent material a Mn4+-activated fluoride compound having a garnet-type crystal structure. The Mn4+-activated fluoride compound preferably answers the general formula {A3}[B2-x-yMnxMgy](Li3)F12-dOd, in which formula A stands for at least one element selected from the series consisting of Na+ and K+ and B stands for at least one element selected from the series consisting of Al3+, B3+, Sc3+, Fe3+, Cr3+, Ti4+ and In3+, and in which formula x ranges between 0.02 and 0.2, y ranges between 0.0 (and incl. 0.0) and 0.4 and d ranges between 0 (and incl. 0) and 1. Said compound is most preferably {Na3}[Al2-x-yMnxMgy](Li3)F12-dOd. The invention also provides said material as well as a method for its preparation.Type: ApplicationFiled: August 31, 2015Publication date: December 24, 2015Applicant: KONINKLIJKE PHILIPS N.V.Inventors: JOERG MEYER, VOLKER WEILER, JOSEF PETER SCHMIDT