Patents by Inventor Matthew A. Stough
Matthew A. Stough 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: 8937332Abstract: A wavelength converter for an LED is described that comprises a substrate of monocrystalline garnet having a cubic crystal structure, a first lattice parameter and an oriented crystal face. An epitaxial layer is formed directly on the oriented crystal face of the substrate. The layer is comprised of a monocrystalline garnet phosphor having a cubic crystal structure and a second lattice parameter that is different from the first lattice parameter wherein the difference between the first lattice parameter and the second lattice parameter results in a lattice mismatch within a range of ±15%. The strain induced in the phosphor layer by the lattice mismatch shifts the emission of the phosphor to longer wavelengths when a tensile strain is induced and to shorter wavelengths when a compressive strain is induced. Preferably, the wavelength converter is mounted on the light emitting surface of a blue LED to produce an LED light source.Type: GrantFiled: January 31, 2012Date of Patent: January 20, 2015Assignee: OSRAM SYLVANIA Inc.Inventors: Darshan Kundaliya, Madis Raukas, Adam M. Scotch, David Hamby, Kailash Mishra, Matthew Stough
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Patent number: 8931922Abstract: A wavelength-conversion plate is described herein. The wavelength conversion plate may include a converter of a first ceramic material and a reflector of a second ceramic material. The first ceramic material converts the primary light emitted by a light source such as a light emitting diode (LED) into a secondary light and the second ceramic material reflects the secondary light emitted by said converter. Preferably, the converter is inlaid into the reflector so that the reflector surrounds an outer edge of the converter. Such a configuration has an advantage of reducing unwanted side emissions from the converter.Type: GrantFiled: March 22, 2012Date of Patent: January 13, 2015Assignee: OSRAM Sylvania Inc.Inventors: Nathan Zink, Madis Raukas, Matthew A. Stough, Yi Zheng, Alan Lenef
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Patent number: 8708543Abstract: There is herein described a light engine that emits a light. The light engine includes a light source, a light guide, a plurality of extraction optical elements, and a plurality of phosphors. The light guide receives the light. The extraction optical elements are on the surface of the light guide. The extraction optical elements extract at least a portion of the light out of the light guide. The phosphors are disposed on top of at least some of the extraction optical elements.Type: GrantFiled: August 10, 2011Date of Patent: April 29, 2014Assignee: Osram Sylvania Inc.Inventors: Dongxue Wang, Matthew A Stough, Martin Zachau
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Publication number: 20130313603Abstract: A wavelength converter for an LED is described that comprises a substrate of monocrystalline garnet having a cubic crystal structure, a first lattice parameter and an oriented crystal face. An epitaxial layer is formed directly on the oriented crystal face of the substrate. The layer is comprised of a monocrystalline garnet phosphor having a cubic crystal structure and a second lattice parameter that is different from the first lattice parameter wherein the difference between the first lattice parameter and the second lattice parameter results in a lattice mismatch within a range of ±15%. The strain induced in the phosphor layer by the lattice mismatch shifts the emission of the phosphor to longer wavelengths when a tensile strain is induced and to shorter wavelengths when a compressive strain is induced. Preferably, the wavelength converter is mounted on the light emitting surface of a blue LED to produce an LED light source.Type: ApplicationFiled: January 31, 2012Publication date: November 28, 2013Applicant: OSRAM SYLVANIA INC.Inventors: Darshan Kundaliya, Madis Raukas, Adam M. Scotch, David Hamby, Kailash Mishra, Matthew Stough
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Publication number: 20130250544Abstract: A wavelength-conversion plate is described herein. The wavelength conversion plate may include a converter of a first ceramic material and a reflector of a second ceramic material. The first ceramic material converts the primary light emitted by a light source such as a light emitting diode (LED) into a secondary light and the second ceramic material reflects the secondary light emitted by said converter. Preferably, the converter is inlaid into the reflector so that the reflector surrounds an outer edge of the converter. Such a configuration has an advantage of reducing unwanted side emissions from the converter.Type: ApplicationFiled: March 22, 2012Publication date: September 26, 2013Inventors: Nathan Zink, Madis Raukas, Matthew A. Stough, Yi Zheng, Alan Lenef
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Publication number: 20130039029Abstract: There is herein described a light engine that emits a light. The light engine includes a light source, a light guide, a plurality of extraction optical elements, and a plurality of phosphors. The light guide receives the light. The extraction optical elements are on the surface of the light guide. The extraction optical elements extract at least a portion of the light out of the light guide. The phosphors are disposed on top of at least some of the extraction optical elements.Type: ApplicationFiled: August 10, 2011Publication date: February 14, 2013Applicant: OSRAM SYLVANIA INC.Inventors: Dongxue Wang, Matthew A. Stough, Martin Zachau
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Patent number: 7800287Abstract: White-light efficiency from a light emitting diode is enhanced by recycling inwardly penetrating light outwardly by application of a multi-layer, thin film filter between the LED die and the phosphor layer. This procedure increases the package extraction efficiency.Type: GrantFiled: August 24, 2007Date of Patent: September 21, 2010Assignee: Osram Sylvania Inc.Inventors: Yi Zheng, Bruce Bateman, Matthew A. Stough, Madis Raukas
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Publication number: 20080054803Abstract: White-light efficiency from a light emitting diode is enhanced by recycling inwardly penetrating light outwardly by application of a multi-layer, thin film filter between the LED die and the phosphor layer. This procedure increases the package extraction efficiency.Type: ApplicationFiled: August 24, 2007Publication date: March 6, 2008Applicant: OSRAM SYLVANIA INC.Inventors: Yi Zheng, Bruce Bateman, Matthew A. Stough, Madis Raukas
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Patent number: 6979421Abstract: A ceramic arc tube assembly and a method for making a ceramic arc tube are described which simplify the manufacture of ceramic arc tubes by reducing the number of handling and heat treatments required to assemble arc tubes prior to the final sintering operation. In particular, the invention uses transient assembly buttons during intermediate assembly steps which are removed prior to the final sintering operation.Type: GrantFiled: September 30, 2003Date of Patent: December 27, 2005Assignee: Osram Sylvania Inc.Inventors: Jeffrey T. Neil, Matthew A. Stough
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Patent number: 6731066Abstract: A ceramic arc tube assembly and a method for making a ceramic arc tube are described which simplify the manufacture of ceramic arc tubes by reducing the number of handling and heat treatments required to assemble arc tubes prior to the final sintering operation. In particular, the invention uses transient assembly buttons during intermediate assembly steps which are removed prior to the final sintering operation.Type: GrantFiled: September 26, 2001Date of Patent: May 4, 2004Assignee: Osram Sylvania Inc.Inventors: Jeffrey T. Neil, Matthew A. Stough
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Publication number: 20040061443Abstract: A ceramic arc tube assembly and a method for making a ceramic arc tube are described which simplify the manufacture of ceramic arc tubes by reducing the number of handling and heat treatments required to assemble arc tubes prior to the final sintering operation. In particular, the invention uses transient assembly buttons during intermediate assembly steps which are removed prior to the final sintering operation.Type: ApplicationFiled: September 30, 2003Publication date: April 1, 2004Inventors: Jeffrey T. Neil, Matthew A. Stough
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Publication number: 20020117784Abstract: A ceramic arc tube assembly and a method for making a ceramic arc tube are described which simplify the manufacture of ceramic arc tubes by reducing the number of handling and heat treatments required to assemble arc tubes prior to the final sintering operation. In particular, the invention uses transient assembly buttons during intermediate assembly steps which are removed prior to the final sintering operation.Type: ApplicationFiled: September 26, 2001Publication date: August 29, 2002Applicant: OSRAM SYLVANIA Inc.Inventors: Jeffrey T. Neil, Matthew A. Stough
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Patent number: D1022568Type: GrantFiled: September 30, 2022Date of Patent: April 16, 2024Assignee: PepsiCo, Inc.Inventors: Michel Alvarez, Xavier Cortadellas, Sean Joseph Huls, William Owen Stock, Matthew K. Lider, Yang Ouyang, David Robert Schlesinger, Joshua Stough, Sarah White