Patents by Inventor Jean Paul Freyssinier

Jean Paul Freyssinier 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: 20240085012
    Abstract: One embodiment provides a luminaire. The luminaire includes a light transfer structure, and a thermal management structure. The light transfer structure is configured to receive light from at least one light emitting diode (LED). The thermal management structure is configured to manage a thermal energy of the at least one LED. The light transfer structure and the thermal management structure are formed during a same three-dimensional (3D) printing process.
    Type: Application
    Filed: January 19, 2022
    Publication date: March 14, 2024
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Nadarajah Narendran, Jean Paul Freyssinier, Ukwatte Lokuliyanage Indika Perera
  • Patent number: 11725810
    Abstract: A heat sink for a luminaire includes a central portion having a top surface and a bottom surface. The bottom surface is adapted to receive a lighting arrangement. The heat sink further includes a plurality of arms configured to dissipate heat generated by the lighting arrangement. The plurality of arms extend radially outward from the central portion. Each one of the plurality of arms is substantially arcuate between a proximal end and a distal end.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: August 15, 2023
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: John Trublowski, Lucas Stahl, Jeremy Santiago, Christopher Ring, Adikaramge Jayawardena, Ukwatte Lokuliyanage Indika Upendra Perera, Nadarajah Narendran, Nilay Mehta, Jean Paul Freyssinier
  • Publication number: 20220260243
    Abstract: A heat sink for a luminaire includes a central portion having a top surface and a bottom surface. The bottom surface is adapted to receive a lighting arrangement. The heat sink further includes a plurality of arms configured to dissipate heat generated by the lighting arrangement. The plurality of arms extend radially outward from the central portion. Each one of the plurality of arms is substantially arcuate between a proximal end and a distal end.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 18, 2022
    Inventors: John Trublowski, Lucas Stahl, Jeremy Santiago, Christopher Ring, Adikaramge Jayawardena, Ukwatte Lokuliyanage Indika Upendra Perera, Nadarajah Narendran, Nilay Mehta, Jean Paul Freyssinier
  • Patent number: 10969272
    Abstract: Methods and systems for modulating a manufactured light source are disclosed. Methods and systems of the present disclosure include sensor assemblies having first and second light sensors to retrieve light spectrum data at a target location, such as from a surface in an interior space at a home, office, or commercial building, that also receives daylight exposure. The first light sensor retrieves the light spectrum data within a spectrum of the manufactured light source. The second light sensor retrieves light spectrum data outside of the spectrum of the manufactured light source, yet within the spectrum of daylight. The light spectrum data is used to define spectral characteristics at the target location, such as a ratio of daylight to the manufactured light source, phase of daylight, and average overall quantity, which are used to maximize light-associated benefits of the spectral composition for the occupants at the target location, such as humans, plants, and animals.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: April 6, 2021
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Yiting Zhu, Jean Paul Freyssinier, Yi-Wei Liu, Dinusha Thotagamuwa
  • Patent number: 10646685
    Abstract: Multipurpose lighting systems and methods of providing controllable lighting are provided. A lighting system includes a sheet of flexible material, a plurality of light sources and a controller. The plurality of light sources are attached to the sheet of flexible material and configured to emit diffused light. The controller is coupled to the plurality of light sources and is configured to control one or more of the plurality of light sources according to one of a plurality of prescribed lighting characteristics associated with a respective plurality of different lighting tasks. In some examples, the lighting system includes a camera coupled to the sheet of flexible material configured to capture at least one image of an object synchronously with the light emitted by the plurality of light sources.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 12, 2020
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Mark S. Rea, Mariana Gross Figueiro, Martin B. Overington, Jean Paul Freyssinier, Robert White
  • Patent number: 10527258
    Abstract: A light fixture includes a light source, a wavelength-conversion material, and a reflector. The light source is configured to emit a first radiation, and has a front surface and a back surface. The wavelength-conversion material is arranged under the front surface and configured to convert the first radiation to a second radiation which has a first portion not able to reach the reflector and a second portion able to reach the reflector. The reflector is arranged over the back surface and configured to reflect the second portion away from the light source without passing through the wavelength-conversion material. The reflector has an end distant from the light source and is arranged in an elevation different from that of the wavelength-conversion material.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: January 7, 2020
    Assignee: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier, Yiting Zhu
  • Publication number: 20190094070
    Abstract: Methods and systems for modulating a manufactured light source are disclosed. Methods and systems of the present disclosure include sensor assemblies having first and second light sensors to retrieve light spectrum data at a target location, such as from a surface in an interior space at a home, office, or commercial building, that also receives daylight exposure. The first light sensor retrieves the light spectrum data within a spectrum of the manufactured light source. The second light sensor retrieves light spectrum data outside of the spectrum of the manufactured light source, yet within the spectrum of daylight. The light spectrum data is used to define spectral characteristics at the target location, such as a ratio of daylight to the manufactured light source, phase of daylight, and average overall quantity, which are used to maximize light-associated benefits of the spectral composition for the occupants at the target location, such as humans, plants, and animals.
    Type: Application
    Filed: May 2, 2017
    Publication date: March 28, 2019
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Nadarajah NARENDRAN, Yiting ZHU, Jean Paul FREYSSINIER, Yi-Wei LIU, Dinusha THOTAGAMUWA
  • Publication number: 20170356603
    Abstract: A light fixture includes a light source, a wavelength-conversion material, and a reflector. The light source is configured to emit a first radiation, and has a front surface and a back surface. The wavelength-conversion material is arranged under the front surface and configured to convert the first radiation to a second radiation which has a first portion not able to reach the reflector and a second portion able to reach the reflector. The reflector is arranged over the back surface and configured to reflect the second portion away from the light source without passing through the wavelength-conversion material. The reflector has an end distant from the light source and is arranged in an elevation different from that of the wavelength-conversion material.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Inventors: Nadarajah NARENDRAN, Yimin GU, Jean Paul FREYSSINIER, Yiting ZHU
  • Patent number: 9746142
    Abstract: A light fixture includes a light source, a wavelength-conversion material, and a reflector. The light source is configured to emit a first radiation, and has a front surface and a back surface. The wavelength-conversion material is arranged under the front surface and configured to convert the first radiation to a second radiation which has a first portion not able to reach the reflector and a second portion able to reach the reflector. The reflector is arranged over the back surface and configured to reflect the second portion away from the light source without passing through the wavelength-conversion material. The reflector has an end distant from the light source and is arranged in an elevation different from that of the wavelength-conversion material.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 29, 2017
    Assignee: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier, Yiting Zhu
  • Publication number: 20170182282
    Abstract: Multipurpose lighting systems and methods of providing controllable lighting are provided. A lighting system includes a sheet of flexible material, a plurality of light sources and a controller. The plurality of light sources are attached to the sheet of flexible material and configured to emit diffused light. The controller is coupled to the plurality of light sources and is configured to control one or more of the plurality of light sources according to one of a plurality of prescribed lighting characteristics associated with a respective plurality of different lighting tasks. In some examples, the lighting system includes a camera coupled to the sheet of flexible material configured to capture at least one image of an object synchronously with the light emitted by the plurality of light sources.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 29, 2017
    Inventors: Mark S. Rea, Mariana Gross Figueiro, Martin B. Overington, Jean Paul Freyssinier, Robert White
  • Publication number: 20150308638
    Abstract: A light fixture includes a light source, a wavelength-conversion material, and a reflector. The light source is configured to emit a first radiation, and has a front surface and a back surface. The wavelength-conversion material is arranged under the front surface and configured to convert the first radiation to a second radiation which has a first portion not able to reach the reflector and a second portion able to reach the reflector. The reflector is arranged over the back surface and configured to reflect the second portion away from the light source without passing through the wavelength-conversion material. The reflector has an end distant from the light source and is arranged in an elevation different from that of the wavelength-conversion material.
    Type: Application
    Filed: July 7, 2015
    Publication date: October 29, 2015
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier, Yiting Zhu
  • Patent number: 9103534
    Abstract: A scattered photon extraction light fixture includes an optic element having a first surface; a light source for emitting short wavelength radiation, the light source disposed opposite, perpendicular, or tangential to the first surface of the optic element; a wavelength-conversion material, disposed on the first surface of the optic element, for receiving and down converting at least some of the short wavelength radiation emitted by the light source and transferring a portion of the received and down converted radiation; and one or more reflectors positioned opposite the wavelength-conversion material. A scattered photon extraction light system includes a plurality of light emitting fixtures. One or more wavelength-conversion materials, in the embodiments of the present invention, are disposed remotely from the light source(s), and used to absorb radiation in one spectral region and emit radiation in another spectral region.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: August 11, 2015
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier, Yiting Zhu
  • Publication number: 20140168941
    Abstract: A scattered photon extraction light fixture includes an optic element having a first surface; a light source for emitting short wavelength radiation, the light source disposed opposite, perpendicular, or tangential to the first surface of the optic element; a wavelength-conversion material, disposed on the first surface of the optic element, for receiving and down converting at least some of the short wavelength radiation emitted by the light source and transferring a portion of the received and down converted radiation; and one or more reflectors positioned opposite the wavelength-conversion material. A scattered photon extraction light system includes a plurality of light emitting fixtures. One or more wavelength-conversion materials, in the embodiments of the present invention, are disposed remotely from the light source(s), and used to absorb radiation in one spectral region and emit radiation in another spectral region.
    Type: Application
    Filed: January 10, 2014
    Publication date: June 19, 2014
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier, Yiting Zhu
  • Patent number: 8646927
    Abstract: A scattered photon extraction light fixture includes an optic element having a first surface; a light source for emitting short wavelength radiation, the light source disposed opposite, perpendicular, or tangential to the first surface of the optic element; a wavelength-conversion material, disposed on the first surface of the optic element, for receiving and down converting at least some of the short wavelength radiation emitted by the light source and transferring a portion of the received and down converted radiation; and one or more reflectors positioned opposite the wavelength-conversion material. A scattered photon extraction light system includes a plurality of light emitting fixtures. One or more wavelength-conversion materials, in the embodiments of the present invention, are disposed remotely from the light source(s), and used to absorb radiation in one spectral region and emit radiation in another spectral region.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: February 11, 2014
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier, Yiting Zhu
  • Publication number: 20130100659
    Abstract: A scattered photon extraction light fixture includes an optic element having a first surface; a light source for emitting short wavelength radiation, the light source disposed opposite, perpendicular, or tangential to the first surface of the optic element; a wavelength-conversion material, disposed on the first surface of the optic element, for receiving and down converting at least some of the short wavelength radiation emitted by the light source and transferring a portion of the received and down converted radiation; and one or more reflectors positioned opposite the wavelength-conversion material. A scattered photon extraction light system includes a plurality of light emitting fixtures. One or more wavelength-conversion materials, in the embodiments of the present invention, are disposed remotely from the light source(s), and used to absorb radiation in one spectral region and emit radiation in another spectral region.
    Type: Application
    Filed: March 11, 2011
    Publication date: April 25, 2013
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier, Yiting Zhu
  • Patent number: 8292468
    Abstract: A light emitting apparatus includes a lamp base, a light-transmissive bulb envelope, a light source for emitting light, and a heat sink coupled to the light source. A solid state LED light bulb may further include a down conversion material. The down conversion material is disposed within the bulb envelope, remote from the light source and between the light source and the lamp base. The heat sink may include at least one metal fin and, additionally or alternatively, include a mesh disposed over at least an outer portion of the bulb envelope. A solid state light bulb may include a light guide for directing the light emitted by the light source. The solid state light bulb configurations place the light source and heat sink at the apex of the light bulb envelope, distant from the lamp base, in order to dissipate heat produced by the light source into the environment. In addition, at least part of the heat sink is outside the light bulb envelope to maximize the heat dissipation.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: October 23, 2012
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Jean Paul Freyssinier, Yiting Zhu
  • Publication number: 20120081880
    Abstract: A light emitting apparatus includes a lamp base, a light-transmissive bulb envelope, a light source for emitting light, and a heat sink coupled to the light source. A solid state LED light bulb may further include a down conversion material. The down conversion material is disposed within the bulb envelope, remote from the light source and between the light source and the lamp base. The heat sink may include at least one metal fin and, additionally or alternatively, include a mesh disposed over at least an outer portion of the bulb envelope. A solid state light bulb may include a light guide for directing the light emitted by the light source. The solid state light bulb configurations place the light source and heat sink at the apex of the light bulb envelope, distant from the lamp base, in order to dissipate heat produced by the light source into the environment. In addition, at least part of the heat sink is outside the light bulb envelope to maximize the heat dissipation.
    Type: Application
    Filed: June 9, 2010
    Publication date: April 5, 2012
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Jean Paul Freyssinier, Yiting Zhu
  • Patent number: 7819549
    Abstract: A light emitting apparatus includes a source of light for emitting light; a down conversion material receiving the emitted light, and converting the emitted light into transmitted light and backward transmitted light; and an optic device configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device. The source of light is a semiconductor light emitting diode, a laser diode (LD), or a resonant cavity light emitting diode (RCLED). The down conversion material includes one of phosphor or other material for absorbing light in one spectral region and emitting light in another spectral region. The optic device, or lens, includes light transmissive material.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: October 26, 2010
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Yimin Gu, Jean Paul Freyssinier
  • Publication number: 20100254155
    Abstract: Simulated candles and methods of simulating a candle are disclosed. The simulated candles include a cylindrical housing having an open top, a plurality of LEDs positioned in the housing, a plurality of optical fibers positioned to receive and transmit light from the plurality of LEDs through the open top of the housing, and a translucent conical light diffuser mounted about the plurality of optical fibers to simulate the appearance of a candle flame. The housing may simulate a candle taper, and may include simulated wax drippings. The simulated candle may include a power source and control electronics positioned within the housing. The color of the LEDs is selected to provide the realistic appearance of a lit candle, for example, the appearance of historically accurate candle, such as, a spermaceti candle.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 7, 2010
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Rosa CAPO, Patricia RIZZO, Jean Paul FREYSSINIER-NOVA
  • Patent number: 7703942
    Abstract: A light emitting apparatus having a light source for emitting short wavelength radiation and an optic device configured to receive the radiation emitted from the light source. A device directs at least some of the short wavelength radiation emitted from the light source into the optic device and a down conversion material receives at least some of the short wavelength radiation directed into the optic device in one spectral region and emits the radiation in another spectral region.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: April 27, 2010
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Jean Paul Freyssinier, Yimin Gu