Patents by Inventor Gregory Guth
Gregory Guth 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: 11189601Abstract: A mounting substrate has a patterned metal layer defining a plurality of top metal bond pads for bonding to bottom metal bond pads of LED dies. A solder mask layer is formed over the mounting substrate, where the mask has openings that expose the top metal bond pads and protects metal traces on the substrate. The mask layer is a highly reflective white paint. The exposed top metal bond pads are then wetted with solder. The LED dies' bottom metal bond pads are then soldered to the exposed top metal bond pads, such that the mask layer surrounds each LED die to reflect light. A reflective ring is affixed to the substrate to surround the LED dies. A viscous phosphor material then partially fills the ring and is cured. All downward light by the LED dies and phosphor is reflected upward by the ring and solder mask layer.Type: GrantFiled: February 5, 2019Date of Patent: November 30, 2021Assignee: Lumileds LLCInventors: Yiwen Rong, Frederic Stephane Diana, Ting Zhu, Gregory Guth
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Patent number: 10890709Abstract: In one embodiment, an overhead street light (a luminaire) is formed that has an asymmetric light intensity distribution, where the peak intensity is greatest along the direction of the street, lower directly across the street, and much lower on the house side of the street. Around the edge of a circular transparent light guide are white light LEDs that inject light into the light guide. To help control the asymmetry of the light intensity distribution, sawtooth-shaped grooves are formed in the light guide surface opposite to the light-emission surface and parallel to the street. Gaussian diffusers are used to partially diffuse the light. By proper selection of the grooves, the Gaussian diffuser, and the relative amounts of light emitted by LED segments around the light guide, the desired asymmetrical light intensity distribution is achieved while a direct view of the light exit surface appears as a uniform light.Type: GrantFiled: August 8, 2019Date of Patent: January 12, 2021Assignee: Lumileds LLCInventors: Frederic S. Diana, Gregory Guth, Jeroen Den Breejen, Iain Black
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Patent number: 10809436Abstract: A method, apparatus, and system are disclosed for increasing light extraction efficiency in a light guide optical system. The light guide optical system may comprise a light emitting source. The light emitting source may be, for example, a light-emitting diode (LED) or plurality of LEDS. The light guide optical system may also comprise a light guide plate (LGP). The LGP may include light extraction features located on surfaces of the LGP. The LGP may also include a shaped injection surface on an input surface of the LGP. The shaped injection surface may be angled to deviate near-parallel light emitted from the LED to enable the near-parallel light emitted from the LED to be extracted from the LGP via the light extraction features. The shaped injection surface may be a split edge (i.e. a V-groove) or a curved edge.Type: GrantFiled: May 31, 2017Date of Patent: October 20, 2020Assignee: Lumileds LLCInventors: Frederic Stephane Diana, Jeroen Den Breejen, Gregory Guth
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Patent number: 10785847Abstract: An apparatus is disclosed comprising: a light guide having an opening formed thereon; an illumination source at least partially disposed in the opening, the illumination source including a plurality of LEDs disposed on a flexible circuit that is wrapped around a base, which may be thermally conductive, the base having a central opening, and the flexible circuit including a plurality of legs, each leg including electrical wiring for independently operating a different one of the LEDs, each leg being wrapped around a bottom edge of the base, and into the central opening, to come above the illumination source and connect to a control board that is situated above the illumination source; and a heat-dissipating element disposed over the illumination source, the heat-dissipating element being thermally coupled to the base to dissipate heat generated by the LEDs that is supplied to the heat dissipating element via the base.Type: GrantFiled: June 21, 2018Date of Patent: September 22, 2020Assignee: Lumileds LLCInventors: Frederic Stephane Diana, Yifeng Qiu, Michael Wasilko, Nazila Soleimani, Jeroen Den Breejen, Alan Andrew McReynolds, Gregory Guth
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Patent number: 10693048Abstract: A method to make light-emitting diode (LED) units include arranging LEDs in a pattern, forming an optically transparent spacer layer over the LEDs, forming an optically reflective layer over the LEDs, and singulating the LEDs into LED units. The method may further include, after forming the optically transparent spacer layer and before singulating the LEDs, forming a secondary light-emitting layer that conforms to the LEDs, cutting the LEDs to form LED groups having a same arrangement, spacing the LED groups on a support, and forming the optically reflective layer in spaces between the LED groups.Type: GrantFiled: September 2, 2016Date of Patent: June 23, 2020Assignee: Lumileds LLCInventors: Frederic S. Diana, Emo Fancsali, Thierry De Smet, Gregory Guth, Yourii Martynov, Oleg B. Shchekin, Jyoti Bhardwaj
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Publication number: 20190361166Abstract: In one embodiment, an overhead street light (a luminaire) is formed that has an asymmetric light intensity distribution, where the peak intensity is greatest along the direction of the street, lower directly across the street, and much lower on the house side of the street. Around the edge of a circular transparent light guide are white light LEDs that inject light into the light guide. To help control the asymmetry of the light intensity distribution, sawtooth-shaped grooves are formed in the light guide surface opposite to the light-emission surface and parallel to the street. Gaussian diffusers are used to partially diffuse the light. By proper selection of the grooves, the Gaussian diffuser, and the relative amounts of light emitted by LED segments around the light guide, the desired asymmetrical light intensity distribution is achieved while a direct view of the light exit surface appears as a uniform light.Type: ApplicationFiled: August 8, 2019Publication date: November 28, 2019Inventors: Frederic S. Diana, Gregory Guth, Jeroen Den Breejen, Iain Black
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Publication number: 20190342975Abstract: An apparatus is disclosed comprising: a light guide having an opening formed thereon; an illumination source at least partially disposed in the opening, the illumination source including a plurality of LEDs disposed on a flexible circuit that is wrapped around a base, which may be thermally conductive, the base having a central opening, and the flexible circuit including a plurality of legs, each leg including electrical wiring for independently operating a different one of the LEDs, each leg being wrapped around a bottom edge of the base, and into the central opening, to come above the illumination source and connect to a control board that is situated above the illumination source; and a heat-dissipating element disposed over the illumination source, the heat-dissipating element being thermally coupled to the base to dissipate heat generated by the LEDs that is supplied to the heat dissipating element via the base.Type: ApplicationFiled: June 21, 2018Publication date: November 7, 2019Applicant: Lumileds LLCInventors: Frederic Stephane Diana, Yifeng Qiu, Michael Wasilko, Nazila Soleimani, Jeroen Den Breejen, Alan Andrew McReynolds, Gregory Guth
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Publication number: 20190304956Abstract: A mounting substrate has a patterned metal layer defining a plurality of top metal bond pads for bonding to bottom metal bond pads of LED dies. A solder mask layer is formed over the mounting substrate, where the mask has openings that expose the top metal bond pads and protects metal traces on the substrate. The mask layer is a highly reflective white paint. The exposed top metal bond pads are then wetted with solder. The LED dies' bottom metal bond pads are then soldered to the exposed top metal bond pads, such that the mask layer surrounds each LED die to reflect light. A reflective ring is affixed to the substrate to surround the LED dies. A viscous phosphor material then partially fills the ring and is cured. All downward light by the LED dies and phosphor is reflected upward by the ring and solder mask layer.Type: ApplicationFiled: February 5, 2019Publication date: October 3, 2019Applicant: Lumileds LLCInventors: Yiwen Rong, Frederic Stephane Diana, Ting Zhu, Gregory Guth
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Patent number: 10416370Abstract: In one embodiment, an overhead street light (a luminaire) is formed that has an asymmetric light intensity distribution, where the peak intensity is greatest along the direction of the street, lower directly across the street, and much lower on the house side of the street. Around the edge of a circular transparent light guide are white light LEDs that inject light into the light guide. To help control the asymmetry of the light intensity distribution, sawtooth-shaped grooves are formed in the light guide surface opposite to the light-emission surface and parallel to the street. Gaussian diffusers are used to partially diffuse the light. By proper selection of the grooves, the Gaussian diffuser, and the relative amounts of light emitted by LED segments around the light guide, the desired asymmetrical light intensity distribution is achieved while a direct view of the light exit surface appears as a uniform light.Type: GrantFiled: February 21, 2017Date of Patent: September 17, 2019Assignee: Lumileds LLCInventors: Frederic S. Diana, Gregory Guth, Jeroen Den Breejen, Iain Black
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Publication number: 20190088840Abstract: A method to make light-emitting diode (LED) units include arranging LEDs in a pattern, forming an optically transparent spacer layer over the LEDs, forming an optically reflective layer over the LEDs, and singulating the LEDs into LED units. The method may further include, after forming the optically transparent spacer layer and before singulating the LEDs, forming a secondary light-emitting layer that conforms to the LEDs, cutting the LEDs to form LED groups having a same arrangement, spacing the LED groups on a support, and forming the optically reflective layer in spaces between the LED groups.Type: ApplicationFiled: September 2, 2016Publication date: March 21, 2019Applicant: Lumileds Holding B.V.Inventors: Frederic S. DIANA, Erno FANCSALI, Thierry DE SMET, Gregory GUTH, Yourii MARTYNOV, Oleg B. SHCHEKIN, Jyoti BHARDWAJ
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Patent number: 10204887Abstract: A mounting substrate (40) has a patterned metal layer defining a plurality of top metal bond pads for bonding to bottom metal bond pads of LED dies. A solder mask layer (52) is formed over the mounting substrate, where the mask has openings that expose the top metal bond pads and protects metal traces on the substrate. The mask layer is a highly reflective white paint. The exposed top metal bond pads are then wetted with solder. The LED dies' bottom metal bond pads are then soldered to the exposed top metal bond pads, such that the mask layer surrounds each LED die to reflect light. A reflective ring (60) is affixed to the substrate to surround the LED dies. A viscous phosphor material (62) then partially fills the ring and is cured. All downward light by the LED dies and phosphor is reflected upward by the ring and solder mask layer.Type: GrantFiled: November 26, 2014Date of Patent: February 12, 2019Assignee: Lumileds LLCInventors: Yiwen Rong, Frederic Stephane Diana, Ting Zhu, Gregory Guth
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Patent number: 10193035Abstract: A light emitting structure includes a packaged back-emitting light emitting device mounted on a reflective substrate. The properties of the reflective surface may be controlled to provide a desired luminance pattern. In this manner, the creation of a light emitting structure that provides a desired luminance pattern may be independent of the provider of the packaged light emitting device.Type: GrantFiled: September 22, 2015Date of Patent: January 29, 2019Assignee: Lumileds LLCInventors: Frederic Stephane Diana, Erno Fancsali, Thierry De Smet, Gregory Guth, Yourii Martynov
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Patent number: 10164160Abstract: A light emitting structure includes a packaged back-emitting light emitting device mounted on a reflective substrate. The properties of the reflective surface may be controlled to provide a desired luminance pattern. In this manner, the creation of a light emitting structure that provides a desired luminance pattern may be independent of the provider of the packaged light emitting device.Type: GrantFiled: September 22, 2015Date of Patent: December 25, 2018Assignee: Lumileds LLCInventors: Frederic Stephane Diana, Erno Fancsali, Thierry De Smet, Gregory Guth, Yourii Martynov
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Publication number: 20180348420Abstract: A method, apparatus, and system are disclosed for increasing light extraction efficiency in a light guide optical system. The light guide optical system may comprise a light emitting source. The light emitting source may be, for example, a light-emitting diode (LED) or plurality of LEDS. The light guide optical system may also comprise a light guide plate (LGP). The LGP may include light extraction features located on surfaces of the LGP. The LGP may also include a shaped injection surface on an input surface of the LGP. The shaped injection surface may be angled to deviate near-parallel light emitted from the LED to enable the near-parallel light emitted from the LED to be extracted from the LGP via the light extraction features. The shaped injection surface may be a split edge (i.e. a V-groove) or a curved edge.Type: ApplicationFiled: May 31, 2017Publication date: December 6, 2018Applicant: Lumileds LLCInventors: Frederic Stephane Diana, Jeroen Den Breejen, Gregory Guth
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Publication number: 20180277727Abstract: A method includes forming a reflective layer (202) on a support (110) where the reflective layer (202) defines openings to the support, placing light-emitting diodes (LEDs) (102) through the openings onto the support (110), forming a non-planar secondary light-emitting layer (106) that conforms to the LEDs and the reflective layer (202), forming a planar optically transparent cap layer (108) over the secondary light-emitting layer, and singulating the LEDs into LED units.Type: ApplicationFiled: August 31, 2016Publication date: September 27, 2018Applicant: Lumileds LLCInventors: Frederic S. DIANA, Thierry DE SMET, Gregory GUTH
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Patent number: 10039165Abstract: A light emitting diode (“LED”) module is disclosed. The LED module includes a first LED tap and a second LED tap, the first tap being powered on for a longer amount of time than the second LED tap, based on an alternating current voltage. The LED module also includes a first LED package on which a first LED associated with the first LED tap and a second LED associated with the second LED tap are disposed. The LED module further includes a second LED package on which a third LED associated with the first LED tap and a fourth LED associated with the second LED tap are disposed.Type: GrantFiled: May 2, 2017Date of Patent: July 31, 2018Assignee: Lumileds LLCInventors: Yifeng Qiu, Gregory Guth, Jeroen den Breejen
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Patent number: 9976707Abstract: A mixing optic combines a variety of features to enhance the brightness and uniformity of the light emitted from a combination of different color light emitting sources. The mixing optic may include a parabolic reflector that redirects low-angle emissions, a reflective waveguide that mixes the light spatially, and a diffuser plate that mixes the light angularly. In an embodiment, the output of the mixing optic exhibits a substantially Lambertian output pattern of a substantially uniform mix of colors, exhibiting, for example, the light output pattern of a single white light source.Type: GrantFiled: December 19, 2014Date of Patent: May 22, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Kuochou Tai, Jeffrey Dellert Kmetec, Gregory Guth
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Publication number: 20170318637Abstract: A light emitting diode (“LED”) module is disclosed. The LED module includes a first LED tap and a second LED tap, the first tap being powered on for a longer amount of time than the second LED tap, based on an alternating current voltage. The LED module also includes a first LED package on which a first LED associated with the first LED tap and a second LED associated with the second LED tap are disposed. The LED module further includes a second LED package on which a third LED associated with the first LED tap and a fourth LED associated with the second LED tap are disposed.Type: ApplicationFiled: May 2, 2017Publication date: November 2, 2017Applicant: LUMILEDS LLCInventors: Yifeng QIU, Gregory GUTH, Jeroen den BREEJEN
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Publication number: 20170279016Abstract: A light emitting structure includes a packaged back-emitting light emitting device mounted on a reflective substrate. The properties of the reflective surface may be controlled to provide a desired luminance pattern. In this manner, the creation of a light emitting structure that provides a desired luminance pattern may be independent of the provider of the packaged light emitting device.Type: ApplicationFiled: September 22, 2015Publication date: September 28, 2017Applicant: Koninklijke Philips N.V.Inventors: Frederic Stephane DIANA, Erno FANCSALI, Thierry DE SMET, Gregory GUTH, Yourii MARTYNOV
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Publication number: 20170242182Abstract: In one embodiment, an overhead street light (a luminaire) is formed that has an asymmetric light intensity distribution, where the peak intensity is greatest along the direction of the street, lower directly across the street, and much lower on the house side of the street. Around the edge of a circular transparent light guide are white light LEDs that inject light into the light guide. To help control the asymmetry of the light intensity distribution, sawtooth-shaped grooves are formed in the light guide surface opposite to the light-emission surface and parallel to the street. Gaussian diffusers are used to partially diffuse the light. By proper selection of the grooves, the Gaussian diffuser, and the relative amounts of light emitted by LED segments around the light guide, the desired asymmetrical light intensity distribution is achieved while a direct view of the light exit surface appears as a uniform light.Type: ApplicationFiled: February 21, 2017Publication date: August 24, 2017Inventors: Frederic S. Diana, Gregory Guth, Jeroen Den Breejen, Iain Black