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).

  • Publication number: 20230397308
    Abstract: The present disclosure provides methods for generating white light. 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.
    Type: Application
    Filed: February 20, 2023
    Publication date: December 7, 2023
    Inventors: Raghuram L.V. Petluri, Paul Kenneth Pickard
  • Publication number: 20230381534
    Abstract: The present disclosure provides methods for generating tunable white light with controllable circadian energy performance. The methods use a plurality of LED to generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each LED 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 in order to tune the generated white light.
    Type: Application
    Filed: April 3, 2023
    Publication date: November 30, 2023
    Inventors: Raghuram L.V. Petluri, Paul Kenneth Pickard
  • Publication number: 20230358371
    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: March 27, 2023
    Publication date: November 9, 2023
    Inventors: Raghuram L.V. Petluri, Paul Kenneth Pickard, Robert FLETCHER
  • Patent number: 11783748
    Abstract: Bioactive display systems for displaying digital content. The display systems have one or more LED-based lighting channels adapted to generate one or more of a long red near infrared (LRNE) red light, a circadian-inducing blue light output in first operational mode and a less-circadian-inducing blue light output in a second operational mode. The bioactive lighting can have a first circadian-stimulating energy characteristic related to the associated first spectral power distributions of light generated in the first operational mode, and the non-circadian-inducing blue light can have a second circadian-stimulating energy characteristic related to the associated second spectral power distribution of light generated in the second operational mode. Disclosure methods of generating digital display content with the display systems described herein.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: October 10, 2023
    Assignee: KORRUS, INC.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard, Benjamin Harrison
  • Patent number: 11781715
    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: Grant
    Filed: September 29, 2020
    Date of Patent: October 10, 2023
    Assignee: KORRUS, INC.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • Publication number: 20230304653
    Abstract: The present disclosure provides methods for generating tunable white light. The methods include using a plurality of LED strings to generate light with color points that fall within white, 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: January 9, 2023
    Publication date: September 28, 2023
    Inventors: Raghuram L.V. Petluri, Paul Kenneth Pickard
  • Publication number: 20230285771
    Abstract: The present disclosure provides lighting systems, which may be semiconductor light emitting devices, with two or more of blue, red and/or LRNE, short-blue-pumped cyan, long-blue-pumped cyan, yellow, and violet channels. The lighting systems can have a plurality of operational modes that provide different biological effects while having good color rendering capability. The yellow and violet channels can include violet LEDs and be used in operational modes that provide white light with lower EML values relative to operational modes using three or more of the blue, red, short-blue-pumped cyan, and long-blue-pumped cyan color channels.
    Type: Application
    Filed: January 30, 2023
    Publication date: September 14, 2023
    Inventors: Raghuram L. V. Petluri, Paul Kenneth PICKARD, Benjamin Harrison
  • Publication number: 20230287266
    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. One or more of the LED strings can have ultraviolet or violet LEDs.
    Type: Application
    Filed: January 12, 2023
    Publication date: September 14, 2023
    Inventors: Raghuram L.V. Petluri, Paul Kenneth Pickard
  • Publication number: 20230127451
    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, green, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output. Methods of generating white light by combining light generated by red, blue, green, and cyan color channels. Methods of generating white light points at substantially the same 1931 CIE chromaticity diagram color coordinates having different EML.
    Type: Application
    Filed: June 27, 2022
    Publication date: April 27, 2023
    Inventors: RAGHURAM L.V. PETLURI, PAUL KENNETH PICKARD
  • Patent number: 11627647
    Abstract: The present disclosure provides methods for generating tunable white light. The methods include using a plurality of LED strings to generate light with color points that fall within white, 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: February 1, 2021
    Date of Patent: April 11, 2023
    Assignee: KORRUS, INC.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • Patent number: 11589436
    Abstract: The present disclosure provides methods for generating white light. 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.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: February 21, 2023
    Assignee: Korrus, Inc.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • Publication number: 20230047721
    Abstract: The present disclosure provides lighting systems, which may be semiconductor light emitting devices, with two or more of blue, red, shoot-blue-pumped cyan, long-blue-pumped cyan, yellow, and violet channels. The lighting systems can have a plurality of operational modes that provide different biological effects while having good color rendering capability. The yellow and violet channels can include violet LEDs and be used in operational modes that provide white light with lower EML values relative to operational modes using three or more of the blue, red, short-blue-pumped cyan, and long-blue-pumped cyan color channels. The yellow, red, and violet channels can be used in an operational mode to provide low EML values while providing white light between about 1800K and about 3500K CCT.
    Type: Application
    Filed: February 28, 2022
    Publication date: February 16, 2023
    Inventors: RAGHURAM L.V. PETLURI, PAUL KENNETH PICKARD
  • Publication number: 20230027107
    Abstract: A system includes a plurality of carbon dioxide sensors each located in one of a plurality of spaces in a building and a plurality of air purification systems each located in one of the plurality of spaces and each including a UVC light source arranged within an internal space of a purification chamber and adapted to irradiate the internal space with UVC, an airflow system arranged to introduce environmental air from outside of the air purification system into the internal space of the purification chamber and expel purified air from the purification chamber back outside of the air purification system wherein each of the plurality of air purification systems is operable to purify air in response to an indication that an associated carbon dioxide sensor has sensed a level of carbon dioxide in excess of a predetermined threshold.
    Type: Application
    Filed: September 22, 2022
    Publication date: January 26, 2023
    Inventors: Mark Reynoso, Benjamin Harrison, Paul Kenneth Pickard, Robert Fletcher
  • Publication number: 20220404667
    Abstract: A backlit display for emitting a display light, said display comprising a backlight configured to emit a high circadian stimulation backlight spectrum having a spectral power distribution (SPD) with an overall power, and a blue range from 440-490 nm with a blue SPD power of at least 25% of said overall power, a pixel array comprising at least three filters, said at least three filter comprising at least a first filter, a second filter, and third filter, forming at least three sub-pixels, wherein said backlight is configured to backlight said pixel array, and wherein said display light has a gamut having an sRGB coverage of at least 85%.
    Type: Application
    Filed: March 29, 2022
    Publication date: December 22, 2022
    Inventors: Paul Kenneth Pickard, Sina Afshari, Raghuram L.V. Petluri
  • Patent number: 11485903
    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: Grant
    Filed: August 24, 2020
    Date of Patent: November 1, 2022
    Assignee: KORRUS, INC.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • Publication number: 20220334305
    Abstract: A method includes determining a first amount of equivalent melanopic lux (EML) based on an actual time of day or an intended time of day, providing, via one or more sources, light configured to emit a first set of spectra that causes the first amount of EML and providing a light guide configured to receive and reflect the light toward an electronic paper (e-paper) display, the light guide being in front of the e-paper display in relation to the reader.
    Type: Application
    Filed: July 7, 2022
    Publication date: October 20, 2022
    Inventors: Benjamin HARRISON, Paul Kenneth PICKARD
  • Publication number: 20220323785
    Abstract: A method includes providing a pixelated surface, providing at least one sensor configured to track movement of at least one eye of a user relative to the surface, detecting one or more portions of the surface based on the tracked movement and adjusting one or more properties in relation to the one or more detected portions such that a dosing of one of cyan and long-red, near-infrared (NIR) illumination is provided, while the user is gazing at the one or more portions.
    Type: Application
    Filed: June 20, 2022
    Publication date: October 13, 2022
    Inventors: RAGHURAM L.V. PETLURI, PAUL KENNETH PICKARD
  • Publication number: 20220272820
    Abstract: A display system for displaying digital content includes one or more LED-based lighting channels adapted to generate a first light output in a first operational mode at a first circadian stimulating energy (CSE), and a second light output in a second operational mode, the second light output associated with a second CSE, and a long red near infrared energy (LRNE) output in a third operating mode.
    Type: Application
    Filed: May 6, 2022
    Publication date: August 25, 2022
    Inventors: Raghuram L.V. PETLURI, Paul Kenneth PICKARD
  • Publication number: 20220272806
    Abstract: A tunable lighting system comprising a plurality of channels comprising at least, a first channel for emitting blue light and having a wavelength peak between 420 nm and 480 nm, a second channel for emitting cyan light having a wavelength peak between 450 nm and 530 nm, a third channel for emitting cyan-green light having a wavelength peak between 510 nm and 590 nm, a fourth channel for emitting red light having a wavelength peak between 510 nm and 780 nm, and a multichannel driver for driving a selection of said plurality of channels, said multichannel driver is configured to drive each channel independently such that said light system emits an emitted light with a CRI of at least 85 over a CCT range greater than 3000 K.
    Type: Application
    Filed: February 9, 2022
    Publication date: August 25, 2022
    Inventors: Raghuram L. V. Petluri, Paul Kenneth PICKARD
  • Publication number: 20220264716
    Abstract: The present disclosure provides methods for generating white light. 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.
    Type: Application
    Filed: December 27, 2021
    Publication date: August 18, 2022
    Applicant: Ecosense Lighting Inc.
    Inventors: Raghuram L.V. Petluri, Paul Kenneth Pickard