Patents by Inventor Eric Tarsa

Eric Tarsa 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).

  • Patent number: 10502374
    Abstract: A light fixture, e.g., as an artificial skylight, in which light within a region defined by x, y color coordinates (0.37, 0.34), (0.35, 0.38), (0.15, 0.20), and (0.20, 0.14) exits a first light engine, and light within a region defined by coordinates (0.29, 0.32), (0.32, 0.29), (0.41, 0.36), (0.48, 0.39), (0.48, 0.43), (0.40, 0.41), and (0.35, 0.38) exits a second light engine. Also, light fixtures in which a second light engine comprises a sidewall, and light exiting a first light engine passes through space defined by the sidewall; light fixtures in which first and second light engines are able to output light providing different CS values at a luminance; light fixtures wherein light incident on a surface of the fixture and cumulative light exiting the fixture have different color points; light fixtures wherein light distribution characteristics of light engines differ; and/or other features. The invention also relates to corresponding methods.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: December 10, 2019
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Michael Leung, Ben Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto, Bernd Keller
  • Patent number: 10465869
    Abstract: 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: Grant
    Filed: May 6, 2018
    Date of Patent: November 5, 2019
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
  • Patent number: 10468566
    Abstract: A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region is formed by pairs of transverse surfaces each surface of which redirects the received light.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: November 5, 2019
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Eric Tarsa, Kurt Wilcox, Bin Hou, Ted Lowes
  • Publication number: 20190326484
    Abstract: A semiconductor light emitting device includes a light emitting diode (LED) chip, a recipient luminophoric medium on the LED chip, a patterned superstrate on the recipient luminophoric medium opposite the LED chip, the patterned superstrate comprising a patterned superstrate on the recipient luminophoric medium opposite the LED chip, the patterned superstrate comprising a patterned surface that is configured to reduce a variation in a color point of a light emitted by the semiconductor light emitting device as a function of an angle off an optical axis of the LED chip.
    Type: Application
    Filed: April 22, 2019
    Publication date: October 24, 2019
    Inventors: Erin Welch, Paul Thomas Fini, Eric Tarsa, Kenneth Morgan Davis
  • Patent number: 10451229
    Abstract: 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: Grant
    Filed: May 6, 2018
    Date of Patent: October 22, 2019
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
  • Patent number: 10416377
    Abstract: A luminaire includes a first waveguide having a first primary light emitting surface directed in a first direction and a first secondary light emitting surface directed in a second direction. A second waveguide having a second primary light emitting surface directed in the second direction and a second secondary light emitting surface directed in the first direction. A first plurality of LEDs are optically coupled to the first waveguide and a second plurality of LEDs are optically coupled to the second waveguide. The first and second waveguides are independently operable. The first and second plurality of LEDs may comprise LED groups where each of the LED groups are independently controllable. The light emission pattern and light properties of the emitted light are controllable.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: September 17, 2019
    Assignee: Cree, Inc.
    Inventors: Claudio Girotto, Eric Tarsa, Nathan Ray Snell, James Ibbetson, Mark Youmans, Theodore D. Lowes, Bernd Keller, Ethan Creasman, Randall Levy Bernard, William L. Dungan
  • Patent number: 10359151
    Abstract: Lamps and bulbs are disclosed generally comprising different combinations and arrangements of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffusing layer. This arrangement allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of a co-planar arrangement of LEDs. The lamps according to the present invention can also comprise thermal management features that provide for efficient dissipation of heat from the LEDs, which in turn allows the LEDs to operate at lower temperatures. The lamps can also comprise optical elements to help change the emission pattern from the generally directional (e.g. Lambertian) pattern of the LEDs to a more omni-directional pattern.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: July 23, 2019
    Assignee: IDEAL INDUSTRIES LIGHTING LLC
    Inventors: Eric Tarsa, Ronan Letoquin, Tao Tong, Bernd Keller
  • Patent number: 10288261
    Abstract: A low profile lighting module. Devices according to this disclosure can produce a uniform light intensity output profile, limiting the perceived appearance of individual point sources, from direct lighting modules comprising several light emitting diodes. Individual lighting device components are disclosed that can contribute to this uniform profile, including: primary optics, secondary optics, and contoured housing elements. These components can interact with and control emitted light, thus adjusting its pattern. These components can alter the direction of emitted light, providing a more uniform light intensity over a wider range of viewing angle.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: May 14, 2019
    Assignee: CREE, INC.
    Inventors: James Ibbetson, Bernd Keller, Eric Tarsa, Zongjie Yuan
  • Patent number: 10172215
    Abstract: A LED lamp has at least two LEDs to provide light of at least two different spectral outputs. An optic element has an entry surface disposed to receive the light from the LEDs. The entry surface includes refracting surfaces that refract the light tangentially. The refracting surfaces may extend radially relative to a center of the entry surface. The refracting surfaces may be continuously curved in cross-section where the refracting surfaces may include convex refracting surfaces and concave refracting surfaces.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 1, 2019
    Assignee: Cree, Inc.
    Inventors: Eric Tarsa, Michael John Bergmann, David Power, Jeremy Johnson, Jean Claude deSugny
  • Publication number: 20180294389
    Abstract: A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region are formed by pairs of transverse surfaces each surface of which redirects the received light.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 11, 2018
    Applicant: Cree, Inc.
    Inventors: Eric Tarsa, Kurt Wilcox, Bin Hou, Ted Lowes
  • Publication number: 20180259140
    Abstract: 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: Application
    Filed: May 6, 2018
    Publication date: September 13, 2018
    Inventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
  • Publication number: 20180252374
    Abstract: 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: Application
    Filed: May 6, 2018
    Publication date: September 6, 2018
    Inventors: Bernd P. Keller, Theodore D. Lowes, Michael Leung, Benjamin A. Jacobson, Eric Tarsa, James Ibbetson, Claudio Girotto
  • Publication number: 20180216791
    Abstract: A light fixture, e.g., as an artificial skylight, in which light within a region defined by x, y color coordinates (0.37, 0.34), (0.35, 0.38), (0.15, 0.20), and (0.20, 0.14) exits a first light engine, and light within a region defined by coordinates (0.29, 0.32), (0.32, 0.29), (0.41, 0.36), (0.48, 0.39), (0.48, 0.43), (0.40, 0.41), and (0.35, 0.38) exits a second light engine. Also, light fixtures in which a second light engine comprises a sidewall, and light exiting a first light engine passes through space defined by the sidewall; light fixtures in which first and second light engines are able to output light providing different CS values at a luminance; light fixtures in which light incident on a surface of the fixture and cumulative light exiting the fixture have different color points; light fixtures in which light distribution characteristics of light engines differ; and/or other features. Also, methods.
    Type: Application
    Filed: January 30, 2017
    Publication date: August 2, 2018
    Applicant: CREE, INC.
    Inventors: Michael LEUNG, Ben JACOBSON, Eric TARSA, James IBBETSON, Claudio GIROTTO, Bernd KELLER
  • Patent number: 9865780
    Abstract: LED packages are disclosed that are compact and efficiently emit light, and can comprise encapsulants with planar surfaces that refract and/or reflect light within the package encapsulant. The packages can also comprise a submount with one or more LEDs, and a blanket conversion material layer on the one or more LEDs and the submount. The encapsulant can be on the submount, over the LEDs, and light reflected within the encapsulant will reach the conversion material, where it will be absorbed and emitted omnidirectionally. This allows for reflected light to now escape from the encapsulant. This allows for efficient emission and a broader emission profile, for example when compared to conventional packages with hemispheric encapsulants or lenses. In certain embodiments, the LED package provides a higher chip area to LED package area ratio.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: January 9, 2018
    Assignee: CREE, INC.
    Inventors: Theodore Lowes, Eric Tarsa, Sten Heikman, Bernd Keller, Jesse Reiherzer, Hormoz Benjamin
  • Publication number: 20170322364
    Abstract: A luminaire includes a first waveguide having a first primary light emitting surface directed in a first direction and a first secondary light emitting surface directed in a second direction. A second waveguide having a second primary light emitting surface directed in the second direction and a second secondary light emitting surface directed in the first direction. A first plurality of LEDs are optically coupled to the first waveguide and a second plurality of LEDs are optically coupled to the second waveguide. The first and second waveguides are independently operable. The first and second plurality of LEDs may comprise LED groups where each of the LED groups are independently controllable.
    Type: Application
    Filed: March 6, 2017
    Publication date: November 9, 2017
    Inventors: Claudio Girotto, Eric Tarsa, Nathan Ray Snell, James Ibbetson, Mark Youmans, Theodore D. Lowes, Bernd Keller, Ethan Creasman, Randall Levy Bernard, William L. Dungan
  • Patent number: 9793247
    Abstract: An LED component according to the present invention comprising an array of LED chips mounted on a submount with the LED chips capable of emitting light in response to an electrical signal. The array can comprise LED chips emitting at two colors of light wherein the LED component emits light comprising the combination of the two colors of light. A single lens is included over the array of LED chips. The LED chip array can emit light of greater than 800 lumens with a drive current of less than 150 milli-Amps. The LED chip component can also operate at temperatures less than 3000 degrees K. In one embodiment, the LED array is in a substantially circular pattern on the submount.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: October 17, 2017
    Assignees: CREE, INC., KONINKLIJKE PHILIPS ELECTRONICS NV
    Inventors: Thomas Yuan, Bernd Keller, Eric Tarsa, James Ibbetson, Frederick Morgan, Kevin Dowling, Ihor Lys
  • Patent number: 9786811
    Abstract: The present disclosure is directed to LED components, and systems using such components, having a light emission profile that may be controlled independently of the lens shape by varying the position and/or orientation of LED chips with respect to one or both of an overlying lens and the surface of the component. For example, the optical centers of the LED emitting surface and the lens, which are normally aligned, may be offset from each other to generate a controlled and predictable emission profile. The LED chips may be positioned to provide a peak emission shifted from a perpendicular centerline of the lens base. The use of offset emitters allows for LED components with shifted or tilted emission patterns, without causing output at high angles of the components. This is beneficial as it allows a lighting system to have tilted emission from the LED component and primary optics.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 10, 2017
    Assignee: CREE, INC.
    Inventors: Fabian Rol, Eric Tarsa, Bernd Keller, Theodore D. Lowes, David T. Emerson
  • Patent number: 9777897
    Abstract: Lighting fixtures are described utilizing a plurality of light sources, or light engines, which are mounted together in a modular fashion in the light fixture opening. In some embodiments, the plurality of light sources can comprise lighting panels that together form the overall fixture light source. The present invention is particularly applicable to troffer-style lighting fixtures that can be arranged with a plurality of lighting panels arranged in the troffer opening to illuminate the space below the troffer. Embodiments of the present invention can also utilize solid state light sources for the lighting panels, with some embodiments utilizing light emitting diodes (LEDs).
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: October 3, 2017
    Assignee: CREE, INC.
    Inventors: Paul Kenneth Pickard, Mark D. Edmond, Gerald Negley, Eric Tarsa
  • Patent number: 9601670
    Abstract: A submount-free light emitter package with primary optic and method of fabricating the same are disclosed, these packages and methods comprising a light emitter with an optic. The optic may have a shape, which includes a portion that is wider at a point further from the light emitter than a point which is closer. The method includes a light emitter disposed on a carrier surface with at least one structure at least partially surrounding the light emitter. The encapsulant is over the light emitter forming a primary optic. The intermediate element at least partially defines the shape of the primary optic.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: March 21, 2017
    Assignee: CREE, INC.
    Inventors: Chandan Bhat, Theodore Lowes, Eric Tarsa
  • Patent number: 9500325
    Abstract: An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and a remote planar phosphor carrier having at least one conversion material. The phosphor carrier can be remote to the light sources and mounted to the heat sink so that heat from the phosphor carrier spreads into the heat sink. The phosphor carrier can comprise a thermally conductive transparent material and a phosphor layer, with an LED based light source mounted to the heat sink such that light from the light source passes through the phosphor carrier. At least some of the LED light is converted by the phosphor carrier, with some lamp embodiments emitting a white light combination of LED and phosphor light. The phosphor arranged according to the present invention can operate at lower temperature to thereby operate at greater phosphor conversion efficiency and with reduced heat related damage to the phosphor.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 22, 2016
    Assignee: CREE, INC.
    Inventors: Tao Tong, Ronan Letoquin, Bernd Keller, Eric Tarsa