Patents by Inventor Kenneth Vampola

Kenneth Vampola 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: 10964848
    Abstract: A light emitting device comprises a detector circuit and a light emitting diode (LED) die. The LED die includes a semiconductor stack grown on a substrate. The LED includes an emitter segment formed from one segment of the semiconductor stack. The LED die includes a photosensor segment formed from another segment of the semiconductor stack. The LED die includes a segmentation layer formed between the emitter segment and the photosensor segment. The segmentation layer electrically isolates the emitter segment from the photosensor segment. The LED die includes first electrodes configured to provide power to energize the emitter segment. The LED die includes second electrodes configured to send the current to the detector circuit. The detector circuit is configured to convert the current to a signal which provides operational feedback with respect to the emitter segment.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: March 30, 2021
    Assignee: Lumileds LLC
    Inventors: Kenneth Vampola, Frederic Stephane Diana, Alan Andrew McReynolds
  • Patent number: 10957821
    Abstract: In some embodiments of the invention, a device includes a semiconductor light emitting device having a first light extraction surface, a wavelength converting element, and a second light extraction surface. A majority of light extracted from the semiconductor light emitting device is extracted from the first light extraction surface. The first light extraction surface has a first area. The second light extraction surface is disposed over the first light extraction surface and has a second area. The first area is larger than the second area.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: March 23, 2021
    Assignee: Lumileds LLC
    Inventors: Kenneth Vampola, Floris Crompvoets
  • Publication number: 20200413500
    Abstract: An automotive headlight is disclosed including: an optical unit including a plurality of optical elements, each optical element having a different central direction; a segmented light-emitting diode (LED) chip including a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section being aligned with a different respective optical element, and each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs, apply a reverse bias to each of the second LEDs, and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Inventors: Erik Charles Nelson, Isaac Wildeson, Parijat Deb, Kenneth Vampola
  • Patent number: 10833227
    Abstract: Light emitting devices are described herein. A light-emitting device includes a substrate having a surface below an optical cavity, one or more light emitting diodes (LEDs) disposed above the surface of the substrate, a first wavelength-converting layer, and a second wavelength-converting layer. The first wavelength-converting layer is disposed on the surface of the substrate below the optical cavity, covers the entire surface of the substrate except for portions of the surface of the substrate that are situated underneath any of the one or more LEDs, and has a thickness that is equal to or less than a thickness of at least one of the one or more LEDs. The second wavelength-converting layer is disposed above the optical cavity.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: November 10, 2020
    Assignee: Lumileds LLC
    Inventors: Kenneth Vampola, Han Ho Choi, Mark Melvin Butterworth
  • Patent number: 10813184
    Abstract: An automotive headlight is disclosed including: an optical unit including a plurality of optical elements, each optical element having a different central direction; a segmented light-emitting diode (LED) chip including a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section being aligned with a different respective optical element, and each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs, apply a reverse bias to each of the second LEDs, and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 20, 2020
    Assignee: Lumileds LLC
    Inventors: Erik Charles Nelson, Isaac Wildeson, Parijat Deb, Kenneth Vampola
  • Publication number: 20200152837
    Abstract: A light emitting device comprises a detector circuit and a light emitting diode (LED) die. The LED die includes a semiconductor stack grown on a substrate. The LED includes an emitter segment formed from one segment of the semiconductor stack. The LED die includes a photosensor segment formed from another segment of the semiconductor stack. The LED die includes a segmentation layer formed between the emitter segment and the photosensor segment. The segmentation layer electrically isolates the emitter segment from the photosensor segment. The LED die includes first electrodes configured to provide power to energize the emitter segment. The LED die includes second electrodes configured to send the current to the detector circuit. The detector circuit is configured to convert the current to a signal which provides operational feedback with respect to the emitter segment.
    Type: Application
    Filed: January 14, 2020
    Publication date: May 14, 2020
    Inventors: Kenneth Vampola, Frederic Stephane Diana, Alan Andrew McReynolds
  • Publication number: 20200035867
    Abstract: In some embodiments of the invention, a device includes a semiconductor light emitting device having a first light extraction surface, a wavelength converting element, and a second light extraction surface. A majority of light extracted from the semiconductor light emitting device is extracted from the first light extraction surface. The first light extraction surface has a first area. The second light extraction surface is disposed over the first light extraction surface and has a second area. The first area is larger than the second area.
    Type: Application
    Filed: February 11, 2019
    Publication date: January 30, 2020
    Applicant: Lumileds LLC
    Inventor: Kenneth Vampola
  • Publication number: 20190223267
    Abstract: An automotive headlight is disclosed including: an optical unit including a plurality of optical elements, each optical element having a different central direction; a segmented light-emitting diode (LED) chip including a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section being aligned with a different respective optical element, and each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs, apply a reverse bias to each of the second LEDs, and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.
    Type: Application
    Filed: March 27, 2019
    Publication date: July 18, 2019
    Applicant: Lumileds LLC
    Inventors: Erik Charles Nelson, Isaac Wildeson, Parijat Deb, Kenneth Vampola
  • Patent number: 10285236
    Abstract: An automotive headlight is disclosed including: an optical unit including a plurality of optical elements, each optical element having a different central direction; a segmented light-emitting diode (LED) chip including a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section being aligned with a different respective optical element, and each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs, apply a reverse bias to each of the second LEDs, and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: May 7, 2019
    Assignee: Lumileds, LLC
    Inventors: Erik Charles Nelson, Isaac Wildeson, Parijat Deb, Kenneth Vampola
  • Publication number: 20190082508
    Abstract: An automotive headlight is disclosed including: an optical unit including a plurality of optical elements, each optical element having a different central direction; a segmented light-emitting diode (LED) chip including a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section being aligned with a different respective optical element, and each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs, apply a reverse bias to each of the second LEDs, and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.
    Type: Application
    Filed: April 9, 2018
    Publication date: March 14, 2019
    Applicant: Lumileds LLC
    Inventors: Erik Charles Nelson, Isaac Wildeson, Parijat Deb, Kenneth Vampola
  • Patent number: 10224466
    Abstract: Embodiments of the invention include a semiconductor light emitting device, a first wavelength converting member disposed on a top surface of the semiconductor light emitting device, and a second wavelength converting member disposed on a side surface of the semiconductor light emitting device. The first and second wavelength converting members include different wavelength converting materials.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 5, 2019
    Assignee: Lumileds LLC
    Inventors: Kenneth Vampola, Han Ho Choi
  • Patent number: 10205063
    Abstract: In some embodiments of the invention, a device includes a semiconductor light emitting device having a first light extraction surface, a wavelength converting element, and a second light extraction surface. A majority of light extracted from the semiconductor light emitting device is extracted from the first light extraction surface. The first light extraction surface has a first area. The second light extraction surface is disposed over the first light extraction surface and has a second area. The first area is larger than the second area.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: February 12, 2019
    Assignee: Lumileds LLC
    Inventors: Kenneth Vampola, Floris Crompvoets
  • Patent number: 10199549
    Abstract: A structure according to embodiments of the invention includes a semiconductor light emitting device and an optical element disposed over the semiconductor light emitting device. The semiconductor light emitting device is disposed in a recess in the optical element. A reflector is disposed on a bottom surface of the optical element. A method according to embodiments of the invention includes disposing a semiconductor light emitting device on a substrate and forming a reflector adjacent the semiconductor light emitting device. An optical element is formed over the semiconductor light emitting device. The semiconductor light emitting device is removed from the substrate.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: February 5, 2019
    Assignee: Lumileds LLC
    Inventors: Jerome Chandra Bhat, Grigoriy Basin, Kenneth Vampola
  • Publication number: 20180294385
    Abstract: Light emitting devices are described herein. A light-emitting device includes a substrate having a surface below an optical cavity, one or more light emitting diodes (LEDs) disposed above the surface of the substrate, a first wavelength-converting layer, and a second wavelength-converting layer. The first wavelength-converting layer is disposed on the surface of the substrate below the optical cavity, covers the entire surface of the substrate except for portions of the surface of the substrate that are situated underneath any of the one or more LEDs, and has a thickness that is equal to or less than a thickness of at least one of the one or more LEDs. The second wavelength-converting layer is disposed above the optical cavity.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 11, 2018
    Applicant: Lumileds LLC
    Inventors: Kenneth Vampola, Han Ho Choi, Mark Melvin Butterworth
  • Publication number: 20180231191
    Abstract: A lighting system according to embodiments of the invention includes first and second light emitting diodes. The first and second light emitting diodes have different peak wavelengths and emit light of the same color. The system further includes a third light emitting diode that emits light of a different color from the first and second light emitting diodes. A wavelength converting element is disposed in a path of light emitted by the first and second light emitting diodes.
    Type: Application
    Filed: September 29, 2015
    Publication date: August 16, 2018
    Inventors: Oleg Borisovich Shchekin, Han-Ho Choi, Kenneth Vampola, Fahong Jin
  • Patent number: 10043952
    Abstract: Embodiments of the invention include a semiconductor light emitting device, a first wavelength converting member disposed on a top surface of the semiconductor light emitting device, and a second wavelength converting member disposed on a side surface of the semiconductor light emitting device. The first and second wavelength converting members include different wavelength converting materials.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: August 7, 2018
    Assignee: LUMILEDS LLC
    Inventors: Kenneth Vampola, Han Ho Choi
  • Patent number: 9997674
    Abstract: Embodiments of the invention include a semiconductor light emitting diode attached to a substrate. A first region of wavelength converting material is disposed on the substrate. The wavelength converting material is configured to absorb light emitted by the semiconductor light emitting diode and emit light at a different wavelength. In the first region, the wavelength converting material coats an entire surface of the substrate. The substrate is disposed proximate a bottom surface of an optical cavity. A second region of wavelength converting material is disposed proximate a top surface of the optical cavity.
    Type: Grant
    Filed: March 30, 2013
    Date of Patent: June 12, 2018
    Assignee: LUMILEDS LLC
    Inventors: Kenneth Vampola, Han Ho Choi, Mark Melvin Butterworth
  • Patent number: 9974135
    Abstract: An apparatus is disclosed that includes a segmented light-emitting diode (LED) chip having a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs; apply a reverse bias to each of the second LEDs; and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 15, 2018
    Assignee: Lumileds LLC
    Inventors: Erik Charles Nelson, Isaac Wildeson, Parijat Deb, Kenneth Vampola
  • Patent number: 9960330
    Abstract: Application of a wavelength conversion element is substantially independent of the fabrication of a side-emitting light emitting device. In an example embodiment, the wavelength conversion element is situated around the periphery of a non-wavelength converting lightguide that is situated above the light emitting surface. One or more specular and/or diffusing reflectors are used to direct the light in the lightguide toward the wavelength conversion element at the periphery. In another embodiment, an interference filter may be used to provide predominantly side-emitted light at interfaces between the elements of the light emitting device.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: May 1, 2018
    Assignee: Koninklijke Philips N.V.
    Inventors: Jianghong Yu, Nicolaas Joseph Martin Van Leth, Giovanni Cennini, Kenneth Vampola, Hugo Johan Comelissen
  • Patent number: 9941454
    Abstract: Embodiments of the invention include a semiconductor light emitting diode (LED) attached to a top surface of a mount. A multi-layer reflector is disposed on the top surface of the mount adjacent to the LED. The multi-layer reflector includes layer pairs of alternating layers of low index of refraction material and high index of refraction material. A portion of the top surface in direct contact with the multi-layer reflector is non-reflective.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: April 10, 2018
    Assignee: Lumileds LLC
    Inventors: Nathaniel T. Lawrence, Oleg Shchekin, Kenneth Vampola