Patents by Inventor Paul Kenneth Pickard

Paul Kenneth Pickard 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).

  • Lighting Systems for Providing Tunable Light with High Color Rendering
    Publication number: 20180368219
    Abstract: The present disclosure provides systems for generating tunable white light. The systems include a plurality of LED strings that generate light with color points that fall within red, blue, and green color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output.
    Type: Application
    Filed: July 30, 2018
    Publication date: December 20, 2018
    Applicant: EcoSense Lighting, Inc.
    Inventors: Raghuram L.V Petluri, Paul Kenneth Pickard
  • Multizone Mixing Cup
    Publication number: 20180356050
    Abstract: A zoned optical cup which mixes multiple channels of light to form a blended output, the device having discreet zones or channels including a plurality of reflective cavities each having a domed light converting appliance (DLCA) covering a cluster of LEDs providing a channel of light which is reflected upward by the cavities and mixed by angles walls and structures above the open top of the cavities in the common body of the cup.
    Type: Application
    Filed: July 28, 2018
    Publication date: December 13, 2018
    Applicant: EcoSense Lighting, Inc.
    Inventors: Raghuram L.V Petluri, Paul Kenneth Pickard
  • Compositions for LED Light Conversions
    Publication number: 20180356051
    Abstract: Systems and methods to provide multiple channels of light to form a blended white light output, the systems and methods utilizing recipient luminophoric mediums to alter light provided by light emitting diodes. The predetermined blends of luminescent materials within the luminophoric mediums provide predetermined spectral power distributions in the white light output.
    Type: Application
    Filed: July 30, 2018
    Publication date: December 13, 2018
    Applicant: EcoSense Lighting, Inc.
    Inventors: Raghuram L.V Petluri, Paul Kenneth Pickard
  • Zoned Optical Cup
    Publication number: 20180356075
    Abstract: An optical plate having discreet zones including a molded substantially planar plate with an annular edge; a top surface and a bottom surface; a plurality of separate transmissive regions or zones on the top surface of the plate; an attachment located on along the circumference of the plate; and, a phosphor mix in each region.
    Type: Application
    Filed: July 27, 2018
    Publication date: December 13, 2018
    Applicant: EcoSense Lighting, Inc.
    Inventors: Raghuram L.V Petluri, Paul Kenneth Pickard
  • Methods For Generating Melatonin-Response-Tuned White Light With High Color Rendering
    Publication number: 20180338355
    Abstract: The present disclosure provides methods for generating tunable white light with controllable circadian energy performance. The methods use a plurality of LED strings to generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output. Different light emitting modes can be selected that utilize different combinations of the plurality of LED strings in order to tune the generated white light.
    Type: Application
    Filed: July 30, 2018
    Publication date: November 22, 2018
    Applicant: EcoSense Lighting, Inc.
    Inventors: Raghuram L.V Petluri, Paul Kenneth Pickard
  • Systems For Providing Tunable White Light With High Color Rendering
    Publication number: 20180338362
    Abstract: The present disclosure provides systems for generating tunable white light. The systems include a plurality of LED strings that generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output.
    Type: Application
    Filed: July 30, 2018
    Publication date: November 22, 2018
    Applicant: EcoSense Lighting, Inc.
    Inventors: Raghuram L.V. Petluri, Paul Kenneth Pickard
  • High efficiency LED lamp
    Patent number: 10094548
    Abstract: A high-efficiency LED lamp is disclosed. Embodiments of the invention provide a high-efficiency, high output solid-state lamp. The lamp includes an LED assembly, an optical element disposed to receive light from the LED assembly, and an optical overlay. The optical element includes a primary exit surface, wherein the primary exit surface is at least about 1.5 inches from the LED assembly. In example embodiments, the optical element is roughly cylindrical in shape, but can take other shapes and be made from various materials. An LED lamp according to some embodiments of the invention has an efficiency of at least about 160 lumens per watt. In some embodiments, the lamp has a light output of at least 1200 lumens. In some embodiments, the LED lamp produces light with a color rendering index (CRI) of at least 90 and a warm white color.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: October 9, 2018
    Assignee: Cree, Inc.
    Inventors: Charles Draper, Kurt Wilcox, Jason Taylor, Paul Kenneth Pickard, Gerald H. Negley, Mark Edmond
  • Light fixtures and lighting devices
    Patent number: 10047946
    Abstract: There is provided a light fixture, comprising a heat sink element and an upper housing mounted to the heat sink element, the heat sink element extending farther in a first direction in a first plane than a largest dimension of the upper housing in any plane parallel to the first plane. In addition, a light fixture, comprising a heat sink element, an upper housing mounted to the heat sink element and an additional component (e.g., a power supply module or a junction box) in contact with the heat sink element. Also, a light fixture, comprising a heat sink element, an upper housing thermally coupled to the heat sink element and at least one solid state light emitter thermally coupled to the heat sink element.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: August 14, 2018
    Assignee: Cree, Inc.
    Inventors: Paul Kenneth Pickard, Gary David Trott
  • Heat sink structures, lighting elements and lamps incorporating same, and methods of making same
    Patent number: 10030863
    Abstract: In some embodiments, a lighting element comprising at least first and second solid state light emitters, a first heat sink structure with a fold region between first and second heat sink regions, and at least one light emitter on each of the heat sink regions, and methods of making. In some embodiments, a lighting element, comprising plural heat sink regions on respective regions of a flexible circuit board, and plural light emitters on respective regions of the flexible circuit board, and methods of making. In some embodiments, heat sink structures comprising plural heat sink regions and a circuit board with plural regions, and lighting elements comprising them. In some embodiments, a heat sink structure, comprising plural heat sink regions and an internal flow guide structure, and lighting elements comprising same. Also, other lighting elements, lamps and heat sink structures.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: July 24, 2018
    Assignee: Cree, Inc.
    Inventors: Paul Kenneth Pickard, Curt Progl, Joshua N. Gray
  • Light fixtures, systems for controlling light fixtures, and methods of controlling fixtures and methods of controlling lighting control systems
    Patent number: 9913348
    Abstract: A fixture comprising a light sensor and an actuator for assigning the fixture to at least one zone. A fixture comprising a light source, a motion sensor and a light sensor. A fixture comprising a motion sensor, a light sensor and a wireless transmitter (optionally also a wireless receiver). A fixture configured to detect light brightness values over a time-span, and identify a period of time with smallest average brightness. A fixture configured to dim at a first rate when a motion sensor senses no motion for a designated period of time, and optionally also configured to brighten at a second rate when the motion sensor detects motion. A fixture configured to dim to not less than a designated percentage unless motion is detected during the dimming. A lighting control system, comprising fixtures and an actuator configured to assign fixtures to zones. Also, other lighting control systems and methods.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: March 6, 2018
    Assignee: Cree, Inc.
    Inventors: Gary David Trott, Paul Kenneth Pickard, James Michael Lay
  • Lensed troffer-style light fixture
    Patent number: 9874322
    Abstract: Troffer-style lighting fixtures are disclosed having troffer housing with reflective regions, and respective light emitting diode (LED) arrays mounted in the reflective regions. The LED arrays are arranged to emit out of said troffer housing to illuminate a room below. The LED arrays can be driven by an elevated drive signal to produce a high luminous flux. The light fixtures according to the present invention can have lenses and diffusers over the arrays arranged to mix and disperse light from the light source to reduce hot spots and the appearance of individual LED colors. A plurality of first diffusers is included, each over a respective LED array. A second diffuser is included over the first diffusers, with the LED light passing through the diffusers prior to emitting from the lighting fixture. The diffusers can have shapes, surfaces or materials to disperse and/or mix the LED light as it emits.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: January 23, 2018
    Assignee: CREE, INC.
    Inventors: Mark D. Edmond, Paul Kenneth Pickard
  • Systems for providing tunable white light with high color rendering
    Patent number: 9860956
    Abstract: The present disclosure provides systems for generating tunable white light. The systems include a plurality of LED strings that generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: January 2, 2018
    Assignee: ECOSENSE LIGHTING INC
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • ILLUMINATING WITH A MULTIZONE MIXING CUP
    Publication number: 20170363257
    Abstract: An optical cup which mixes multiple channels of light to form a blended output, the device having discreet zones or channels including a plurality of reflective cavities each having a remote phosphor light converting appliance covering a cluster of LEDs providing a channel of light which is reflected upward. The predetermined blends of phosphors provide a predetermined range of illumination wavelengths in the output.
    Type: Application
    Filed: August 31, 2017
    Publication date: December 21, 2017
    Applicant: ECOSENSE LIGHTING INC
    Inventors: Raghuram L. V. PETLURI, Paul Kenneth PICKARD, Robert FLETCHER
  • COMPOSITIONS FOR LED LIGHT CONVERSIONS
    Publication number: 20170356624
    Abstract: Systems and methods to provide multiple channels of light to form a blended white light output, the systems and methods utilizing recipient luminophoric mediums to alter light provided by light emitting diodes. The predetermined blends of luminescent materials within the luminophoric mediums provide predetermined spectral power distributions in the white light output.
    Type: Application
    Filed: July 31, 2017
    Publication date: December 14, 2017
    Applicant: ECOSENSE LIGHTING INC
    Inventors: Raghuram L. V. PETLURI, Paul Kenneth PICKARD
  • Lighting device with multiple-region reflector
    Patent number: 9841162
    Abstract: Lighting devices that comprise a light source and a reflector, the reflector comprising first, second and third reflector regions. In some devices, a first portion of light is reflected by the first region and then by the third reflector region, a second portion of light is reflected by the second region and forms a primary beam, and at least 5% of the first portion of light that is reflected by the third region is within the primary beam of light. In some devices, at least 5% of all light reflected by the first reflector region travels from the first reflector region directly to the third reflector region. In some devices, at least 5% of all light reflected by the third reflector region traveled directly from the first reflector region to the third reflector region. In some devices, the reflector comprises means for providing the features described above.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: December 12, 2017
    Assignee: Cree, Inc.
    Inventors: Paul Kenneth Pickard, Antony Paul Van De Ven
  • Systems for providing tunable white light with high color rendering
    Patent number: 9839091
    Abstract: The present disclosure provides systems for generating tunable white light. The systems include a plurality of LED strings that generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: December 5, 2017
    Assignee: ECOSENSE LIGHTING INC.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • ILLUMINATING WITH A MULTIZONE MIXING CUP
    Publication number: 20170343167
    Abstract: An optical cup which mixes multiple channels of light to form a blended output, the device having discreet zones or channels including a plurality of reflective cavities each having a remote light converting appliance covering a cluster of LEDs providing a channel of light which is reflected upward. The predetermined blends of luminescence materials provide a predetermined range of illumination wavelengths in the output. The remote light converting appliances may be provided as frustoconical elements within frustoconical reflective cavities with a void between the light converting appliances and the associated LEDs.
    Type: Application
    Filed: August 16, 2017
    Publication date: November 30, 2017
    Applicant: ECOSENSE LIGHTING INC
    Inventors: Raghuram L. V. PETLURI, Paul Kenneth PICKARD, Robert FLETCHER
  • LED retrofit lens for fluorescent tube
    Patent number: 9822951
    Abstract: Light fixtures having light bar elements therein. In order to mimic the size and appearance of fluorescent bulbs in existing troffer-style and surface-mount fixtures, LEDs are may be arranged on light bars with integrated lenses to both diffuse the light and shape the output beam. One or more LEDs can be mounted, sometimes in clusters, along the length of a base of the light bar which can then be inserted into a fixture. An elongated lens is mounted to the base over the LEDs so that light emitted from the LEDs interacts with the lens before it escapes the fixture. These elongated lenses may be extruded from a diffusive material, for example, and can be shaped in various ways. For example, the lenses may be shaped to disperse more light to the sides, i.e., in a direction away from a normal axis that is perpendicular to the base.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: November 21, 2017
    Assignee: CREE, INC.
    Inventors: Dong Lu, Nicholas W. Medendorp, Jr., Randy Bernard, Paul Kenneth Pickard
  • LED lamp
    Patent number: 9810379
    Abstract: A lamp has an optically transmissive enclosure and a base. A tower extends from the base into the enclosure and supports an LED assembly in the enclosure. The LED assembly comprises a plurality of LEDs operable to emit light when energized through an electrical path from the base. The tower and the LED assembly are arranged such that the plurality of LEDs are disposed about the periphery of the tower in a band and face outwardly toward the enclosure to create a source of the light that appears as a glowing filament. The tower forms part of a heat sink that transmits heat from the LED assembly to the ambient environment. The LED assembly has a three-dimensional shape. An electrical interconnect connects a conductor to the heat sink where the conductor is in the electrical path between the LED assembly and the base.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: November 7, 2017
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, John Adam Edmond, Gerald H. Negley, Curt Progl, Mark Edmond, Praneet Athalye, Charles M. Swoboda, Antony Paul van de Ven, Paul Kenneth Pickard, Bart P. Reier, James Michael Lay, Peter E. Lopez
  • High efficiency LED lamp
    Patent number: 9797589
    Abstract: A high-efficiency LED lamp is disclosed. Embodiments of the present invention provide a high-efficiency, high output solid-state lamp. The lamp includes an LED assembly, and an optical element or diffuser disposed to receive light from the LED assembly. The optical element includes a primary exit surface, wherein the primary exit surface is at least about 1.5 inches from the LED assembly. In example embodiments, the optical element is roughly cylindrical in shape, but can take other shapes and be made from various materials. An LED lamp according to some embodiments of the invention has an efficiency of at least about 150 lumens per watt. In some embodiments, the lamp has a light output of at least 1200 lumens. In some embodiments, the LED lamp produces light with a color rendering index (CRI) of at least 90 and a warm white color.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: October 24, 2017
    Assignee: Cree, Inc.
    Inventors: Paul Kenneth Pickard, Gerald H. Negley, Mark Edmond