Patents by Inventor Bernd P. Keller
Bernd P. Keller 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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Publication number: 20240074013Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. First and second light engines of the fixture provide different color points, peak light intensity angles, far-field light distribution characteristics, and/or circadian stimulus values. A skylight fixture may include a sky-resembling assembly and a plurality of sun-resembling assemblies, with dedicated optical assemblies and/or light sources. A lighting fixture may include multiple waveguides that different extraction feature patterns and/or may be sequentially arranged.Type: ApplicationFiled: August 14, 2023Publication date: February 29, 2024Inventors: Bernd P. Keller, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto, Amruteshwar Hiremath
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Patent number: 11729877Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. First and second light engines of the fixture provide different color points, peak light intensity angles, far-field light distribution characteristics, and/or circadian stimulus values. A skylight fixture may include a sky-resembling assembly and a plurality of sun-resembling assemblies, with dedicated optical assemblies and/or light sources. A lighting fixture may include multiple waveguides that different extraction feature patterns and/or may be sequentially arranged.Type: GrantFiled: October 12, 2021Date of Patent: August 15, 2023Assignee: IDEAL Industries Lighting LLCInventors: Bernd P. Keller, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
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Patent number: 11644157Abstract: According to one aspect, a waveguide comprises a waveguide body having a coupling cavity defined by a coupling feature disposed within the waveguide body. A plug member comprises a first portion disposed in the coupling cavity and an outer surface substantially conforming to the coupling feature and a second portion extending from the first portion into the coupling cavity. The second portion includes a reflective surface adapted to direct light in the coupling cavity into the waveguide body.Type: GrantFiled: September 29, 2020Date of Patent: May 9, 2023Assignee: IDEAL Industries Lighting LLCInventors: Bernd P. Keller, Eric J. Tarsa, Zongjie Yuan, Kurt S. Wilcox
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Publication number: 20220026052Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. First and second light engines of the fixture provide different color points, peak light intensity angles, far-field light distribution characteristics, and/or circadian stimulus values. A skylight fixture may include a sky-resembling assembly and a plurality of sun-resembling assemblies, with dedicated optical assemblies and/or light sources. A lighting fixture may include multiple waveguides that different extraction feature patterns and/or may be sequentially arranged.Type: ApplicationFiled: October 12, 2021Publication date: January 27, 2022Inventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto, Matthew Berry
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Patent number: 11209138Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.Type: GrantFiled: August 11, 2020Date of Patent: December 28, 2021Assignee: IDEAL Industries Lighting LLCInventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
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Patent number: 11070493Abstract: A luminaire having a waveguide suspended beneath a mounting element, the waveguide has a first surface proximal to the mounting element, a second surface distal to the mounting element, and an edge between the first and the second surfaces. At least one cavity extends into the waveguide from the first surface to the second surface. A LED component is coupled to the waveguide so as to emit light into the cavity. LED support structures are also disclosed.Type: GrantFiled: February 15, 2019Date of Patent: July 20, 2021Assignee: IDEAL Industries Lighting LLCInventors: Eric J. Tarsa, Hormoz Benjamin, Bernd P. Keller, Kurt S. Wilcox, Zongjie Yuan
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Patent number: 10938744Abstract: A luminaire having a waveguide suspended beneath a mounting element, the waveguide has a first surface proximal to the mounting element, a second surface distal to the mounting element, and an edge between the first and the second surfaces. At least one cavity extends into the waveguide from the first surface to the second surface. A LED component is coupled to the waveguide so as to emit light into the cavity. LED support structures are also disclosed.Type: GrantFiled: February 15, 2019Date of Patent: March 2, 2021Assignee: Ideal Industries Lighting LLCInventors: Eric J. Tarsa, Hormoz Benjamin, Bernd P. Keller, Kurt S. Wilcox, Zongjie Yuan
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Publication number: 20210010646Abstract: According to one aspect, a waveguide comprises a waveguide body having a coupling cavity defined by a coupling feature disposed within the waveguide body. A plug member comprises a first portion disposed in the coupling cavity and an outer surface substantially conforming to the coupling feature and a second portion extending from the first portion into the coupling cavity. The second portion includes a reflective surface adapted to direct light in the coupling cavity into the waveguide body.Type: ApplicationFiled: September 29, 2020Publication date: January 14, 2021Inventors: Bernd P. Keller, Eric J. Tarsa, Zongjie Yuan, Kurt S. Wilcox
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Publication number: 20200370719Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.Type: ApplicationFiled: August 11, 2020Publication date: November 26, 2020Inventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
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Patent number: 10808891Abstract: According to one aspect, a waveguide comprises a waveguide body having a coupling cavity defined by a coupling feature disposed within the waveguide body. A plug member comprises a first portion disposed in the coupling cavity and an outer surface substantially conforming to the coupling feature and a second portion extending from the first portion into the coupling cavity. The second portion includes a reflective surface adapted to direct light in the coupling cavity into the waveguide body.Type: GrantFiled: June 3, 2019Date of Patent: October 20, 2020Assignee: Ideal Industries Lighting LLCInventors: Bernd P. Keller, Eric J. Tarsa, Zongjie Yuan, Kurt S. Wilcox
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Patent number: 10781984Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.Type: GrantFiled: October 18, 2019Date of Patent: September 22, 2020Assignee: IDEAL Industries Lighting LLCInventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
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Publication number: 20200049318Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.Type: ApplicationFiled: October 18, 2019Publication date: February 13, 2020Inventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
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Patent number: 10465869Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.Type: GrantFiled: May 6, 2018Date of Patent: November 5, 2019Assignee: IDEAL Industries Lighting LLCInventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
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Patent number: 10451229Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.Type: GrantFiled: May 6, 2018Date of Patent: October 22, 2019Assignee: IDEAL Industries Lighting LLCInventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
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Patent number: 10436969Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof. The body of material has a first side, a second side opposite the first side, and a plurality of interior bores extending between the first and second sides each adapted to receive a light emitting diode. Extraction features are disposed on the second side and the extraction features direct light out of at least the first side and at least one extraction feature forms a taper disposed at an outer portion of the body.Type: GrantFiled: March 15, 2013Date of Patent: October 8, 2019Assignee: Ideal Industries Lighting LLCInventors: Zongjie Yuan, Kurt S. Wilcox, Eric J. Tarsa, Fabian Jean-Daniel Rol, James Ibbetson, Bernd P. Keller, Nicholas W. Medendorp, Jr.
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Publication number: 20190301687Abstract: According to one aspect, a waveguide comprises a waveguide body having a coupling cavity defined by a coupling feature disposed within the waveguide body. A plug member comprises a first portion disposed in the coupling cavity and an outer surface substantially conforming to the coupling feature and a second portion extending from the first portion into the coupling cavity. The second portion includes a reflective surface adapted to direct light in the coupling cavity into the waveguide body.Type: ApplicationFiled: June 3, 2019Publication date: October 3, 2019Inventors: Bernd P. Keller, Eric J. Tarsa, Zongjie Yuan, Kurt S. Wilcox
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Patent number: 10408986Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof and including a first side, a second side opposite the first side, a central bore extending between the first and second sides and adapted to receive a light emitting diode, and extraction features on the second side. A light diverter extends into the central bore for diverting light into and generally along the width of the body of material. The extraction features direct light out of the first side and wherein at least one extraction feature has an extraction surface dimension transverse to the thickness that is between about 5% and about 75% the overall thickness of the body of material.Type: GrantFiled: February 27, 2017Date of Patent: September 10, 2019Assignee: Ideal Industries Lighting LLCInventors: Zongjie Yuan, Kurt S. Wilcox, Eric J. Tarsa, Fabian Jean-Daniel Rol, James Ibbetson, Bernd P. Keller
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Patent number: 10349484Abstract: Solid state lighting devices with melatonin suppression characteristics that ameliorate or reduce symptoms of circadian rhythm disorders or other health conditions. Aspects disclosed herein additionally relate to providing one or more of the foregoing effects while maintaining color rendering index (CRI) values acceptably high for the intended use, as well as providing lighting devices with high luminous efficacy and enhanced energy efficiency. A solid state lighting device includes one or more solid state emitters and one or more lumiphoric materials that provide aggregated emissions of the solid state lighting device. The aggregated emissions have a warm correlated color temperature (CCT) with a color point that is off of the blackbody locus (BBL) by a certain distance.Type: GrantFiled: May 31, 2018Date of Patent: July 9, 2019Assignee: CREE, INC.Inventors: Fan Zhang, Ryan Gresback, Antony Paul van de Ven, Robert Glass, Bernd P. Keller
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Patent number: 10344922Abstract: According to one aspect, a waveguide comprises a waveguide body having a coupling cavity defined by a coupling feature disposed within the waveguide body. A plug member comprises a first portion disposed in the coupling cavity and an outer surface substantially conforming to the coupling feature and a second portion extending from the first portion into the coupling cavity. The second portion includes a reflective surface adapted to direct light in the coupling cavity into the waveguide body.Type: GrantFiled: November 14, 2017Date of Patent: July 9, 2019Assignee: Ideal Industries Lighting LLCInventors: Bernd P. Keller, Eric J. Tarsa, Zongjie Yuan, Kurt S. Wilcox
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Publication number: 20190190850Abstract: A luminaire having a waveguide suspended beneath a mounting element, the waveguide has a first surface proximal to the mounting element, a second surface distal to the mounting element, and an edge between the first and the second surfaces. At least one cavity extends into the waveguide from the first surface to the second surface. A LED component is coupled to the waveguide so as to emit light into the cavity. LED support structures are also disclosed.Type: ApplicationFiled: February 15, 2019Publication date: June 20, 2019Inventors: Eric J. Tarsa, Hormoz Benjamin, Bernd P. Keller, Kurt S. Wilcox, Zongjie Yuan