Patents by Inventor Antony P. van de Ven

Antony P. van de Ven 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: 9066382
    Abstract: A lighting apparatus includes a light emitting device that has an attribute that is adjustable responsive to a control signal carried on a power line from which the light emitting device receives an Alternating Current (AC) power signal.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: June 23, 2015
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Joseph P. Chobot
  • Patent number: 9041302
    Abstract: Some embodiments provide a lighting apparatus including a plurality of lighting circuits coupled in series. Each lighting circuit includes a control circuit configured to selectively provide current to at least one LED and at least one charge storage device coupled to the at least one LED. The control circuit may be configured to cause the at least one charge storage device to be selectively charged from a current source and to be discharged via the at least one LED responsive to a varying input. For example, the control circuit may be configured to limit current through the at least one LED to thereby divert current to the at least one charge storage device.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: May 26, 2015
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Praneet Jayant Athalye
  • Patent number: 9006986
    Abstract: Semiconductor light emitting devices are provided that include a first string of light emitting diodes (“LED”) that emit unsaturated light having a color point that is within at least eight MacAdam ellipses of one or more points within a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit unsaturated light having color point that is within at least eight MacAdam ellipses from one or more points within a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit is provided that is configured to supply a first drive current to the first string of LEDs, a second drive current to the second string of LEDs and a third drive current to the third string of LEDs, wherein at least two of the first, second and third drive currents are independently controllable.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: April 14, 2015
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Jason E. Taylor, Paul K. Pickard, Gauss Ho Ching So, Heidi M. Dieringer, Andrew Dummer
  • Patent number: 8998444
    Abstract: A solid state lighting apparatus includes a plurality of light emitting diodes (LEDs) including at least a first LED and a second LED. Chromaticities of the first and second LEDs are selected so that a combined light generated by a mixture of light from the pair of LEDs has about a target chromaticity. The first LED may include a first LED chip that emits light in the blue portion of the visible spectrum and a phosphor that emits red light in response to blue light emitted by the first LED chip. The second LED emits light having a color point that is above the planckian locus of a 1931 CIE Chromaticity diagram, and in particular may have a yellow green, greenish yellow or green hue.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: April 7, 2015
    Assignee: Cree, Inc.
    Inventors: John Roberts, Gerald H. Negley, Antony P. van de Ven, Arpan Chakraborty, Bernd Keller, Ronan P. Le Toquin
  • Publication number: 20150055371
    Abstract: A luminaire comprises at least one waveguide having a first region that emits a first luminous intensity pattern and a second region that emits a second luminous intensity pattern different from the first luminous intensity pattern. The luminaire further includes a plurality of LED elements and circuitry to control the plurality of LED elements to cause the luminaire to produce a selected one of a plurality of luminous intensity patterns.
    Type: Application
    Filed: August 28, 2014
    Publication date: February 26, 2015
    Inventors: Antony P. van de Ven, Eric J. Tarsa, Bernd P. Keller, Benjamin A. Jacobson, Jean-Claude David Ramey de Sugny
  • Publication number: 20150002034
    Abstract: Semiconductor light emitting devices are provided that include a first string of light emitting diodes (“LED”) that emit unsaturated light having a color point that is within at least eight MacAdam ellipses of one or more points within a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit unsaturated light having color point that is within at least eight MacAdam ellipses from one or more points within a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit is provided that is configured to supply a first drive current to the first string of LEDs, a second drive current to the second string of LEDs and a third drive current to the third string of LEDs, wherein at least two of the first, second and third drive currents are independently controllable.
    Type: Application
    Filed: June 10, 2014
    Publication date: January 1, 2015
    Inventors: Antony P. van de Ven, Jason E. Taylor, Paul K. Pickard, Gauss Ho Ching So, Heidi M. Dieringer, Andrew Dummer
  • Patent number: 8921876
    Abstract: A lighting device includes a semiconductor light emitting device (LED) configured to emit light having a first peak wavelength upon the application of a voltage thereto, an element in adjacent, spaced-apart relationship with the LED, and a pattern of discrete lumiphor-containing regions on a surface of, or within, the element. The lumiphor-containing regions are configured to receive light emitted by the LED and convert at least a portion of the received light to light having a longer wavelength than the first peak wavelength. The remote element may be a lens, a reflective element, or a combination thereof.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: December 30, 2014
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Gerald H. Negley
  • Patent number: 8901829
    Abstract: A solid state lighting apparatus according to some embodiments includes a circuit including a plurality of light emitting devices, and a configurable shunt configured to bypass at least some current around at least one light emitting device of the plurality of light emitting devices. The configurable shunt may include, for example, a tunable resistor, a fuse, a switch, a thermistor, and/or a variable resistor.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: December 2, 2014
    Assignee: Cree LED Lighting Solutions, Inc.
    Inventors: Antony P. van de Ven, Gerald H. Negley
  • Publication number: 20140312791
    Abstract: Some embodiments provide a lighting apparatus including a plurality of lighting circuits coupled in series. Each lighting circuit includes a control circuit configured to selectively provide current to at least one LED and at least one charge storage device coupled to the at least one LED. The control circuit may be configured to cause the at least one charge storage device to be selectively charged from a current source and to be discharged via the at least one LED responsive to a varying input. For example, the control circuit may be configured to limit current through the at least one LED to thereby divert current to the at least one charge storage device.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 23, 2014
    Inventors: Antony P. van de Ven, Praneet Jayant Athalye
  • Publication number: 20140268778
    Abstract: A lighting apparatus includes a first substrate including a switching circuit, the switching circuit including a first port, a second port and a current control circuit configured to generate a current at the second port of the current control circuit responsive to a varying voltage at the first port. The apparatus further includes a second substrate mounted on the first substrate and including at least two LEDs electrically coupled to the second port of the current control circuit of the first substrate.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: Cree, Inc.
    Inventors: Antony P. van de Ven, Gerald H. Negley, Terry Given
  • Publication number: 20140252967
    Abstract: A dimmable solid state lighting apparatus can include a plurality of light emitting diode (LED) segments including a first LED segment that can have a targeted spectral power distribution for light emitted from the apparatus that is different than spectral power distributions for other LED segments included in the plurality of LED segments. An LED segment selection circuit can be configured to selectively control current through the plurality of LED segments to shift the light emitted by the apparatus to the targeted spectral power distribution responsive to dimming input.
    Type: Application
    Filed: May 19, 2014
    Publication date: September 11, 2014
    Applicant: Cree, Inc.
    Inventors: Antony P. van de Ven, Matthew C. Reynolds
  • Patent number: 8823271
    Abstract: A lighting apparatus includes a string of Light Emitting Diode (LED) sets coupled in series, each set including at least one LED, a light spreading circuit configured to incrementally turn on respective ones of the LED sets responsive to a power signal, and an energy storage module that is configured to store energy during a first interval of a period of the power signal and to apply the stored energy to the string during a second interval of the period of the power signal.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: September 2, 2014
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Liqin Ni
  • Patent number: 8791641
    Abstract: Some embodiments provide a lighting apparatus including a plurality of lighting circuits coupled in series. Each lighting circuit includes a control circuit configured to selectively provide current to at least one LED and at least one charge storage device coupled to the at least one LED. The control circuit may be configured to cause the at least one charge storage device to be selectively charged from a current source and to be discharged via the at least one LED responsive to a varying input. For example, the control circuit may be configured to limit current through the at least one LED to thereby divert current to the at least one charge storage device.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: July 29, 2014
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Praneet Jayant Athalye
  • Patent number: 8791642
    Abstract: Light emitting devices include a first string of LEDs that emit light having a color point that is within at least eight MacAdam ellipses of a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit light having color point that is within at least eight MacAdam ellipses of a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit supplies respective drive currents to the first string of LEDs, the second string of LEDs and the third light source, at least two of which are independently controllable.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: July 29, 2014
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Jason Taylor, Paul Kenneth Pickard, Gauss Ho Ching So, Heidi Dieringer, Andrew Dummer
  • Patent number: 8766885
    Abstract: A full color flat panel display module is formed of a matrix of pixels in rows and columns. Each pixel is formed of respective red, green and blue solid state light emitting diodes that can form any color on that portion of a CIE curve that falls within a triangle whose sides are formed by a line on the CIE curve between 430 nm and 660 nm, a line between 660 nm and a point between 500 and 530 nm, and a line between the 500-530 nm point and 430 nm.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: July 1, 2014
    Assignee: Cree, Inc.
    Inventors: Antony P. Van de Ven, Charles M. Swoboda
  • Patent number: 8742671
    Abstract: A lighting apparatus includes a first substrate including a switching circuit, the switching circuit including a first port, a second port and a current control circuit configured to generate a current at the second port of the current control circuit responsive to a varying voltage at the first port. The apparatus further includes a second substrate mounted on the first substrate and including at least two LEDs electrically coupled to the second port of the current control circuit of the first substrate.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: June 3, 2014
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Gerald H. Negley, Terry Given
  • Publication number: 20130285564
    Abstract: A diode selection circuit for a light emitting apparatus according to some embodiments includes a plurality of light emitting devices coupled in series. The diode selection circuit includes a comparator configured to receive a rectified AC input signal and a reference voltage and to generate a control signal in response to comparison of the rectified AC input signal with the reference voltage, a voltage controlled current source configured to supply a current to the plurality of light emitting diodes that is proportional to the rectified AC input signal, and a switch configured to receive the control signal and to shunt current away from at least one of the plurality of light emitting devices in response to the control signal.
    Type: Application
    Filed: June 17, 2013
    Publication date: October 31, 2013
    Inventors: Antony P. van de Ven, Terry Given
  • Publication number: 20130241392
    Abstract: Lighting devices include a semiconductor light emitting device and first and second spaced-apart lumiphors. The first lumiphor has a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and a second surface opposite the first surface. The second lumiphor has a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and radiation emitted by the luminescent materials in the first lumiphor. The first lumiphor is a leaky lumiphor in that the luminescent materials therein wavelength convert less than 90% of the radiation from the semiconductor light emitting device light that is incident on the first lumiphor.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 19, 2013
    Applicant: Cree, Inc.
    Inventors: Paul Pickard, Antony P. Van de Ven, Ronan P. LeToquin
  • Patent number: 8511851
    Abstract: Solid state luminaires and light engines comprising a first group of solid state emitters comprising a first emitter emitting above the black body locus (BBL) in a CIE diagram, and a second emitter emitting below the BBL. The combination of light from the first and second emitters generates an emission color point within a standard deviation of the BBL. A second group of solid state emitters is included, the combination of light from the first and second groups of emitters causes emission within a standard deviation of the black body locus (BBL), wherein varying the intensity of the second group of emitters causes emission from the first and second groups of emitters to vary within a range of color temperatures while still emitting within the standard deviation of the BBL.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: August 20, 2013
    Assignee: Cree, Inc.
    Inventors: Antony P. Van de Ven, Gerald Negley
  • Patent number: 8476836
    Abstract: A diode selection circuit for a light emitting apparatus according to some embodiments includes a plurality of light emitting devices coupled in series. The diode selection circuit includes a comparator configured to receive a rectified AC input signal and a reference voltage and to generate a control signal in response to comparison of the rectified AC input signal with the reference voltage, a voltage controlled current source configured to supply a current to the plurality of light emitting diodes that is proportional to the rectified AC input signal, and a switch configured to receive the control signal and to shunt current away from at least one of the plurality of light emitting devices in response to the control signal.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: July 2, 2013
    Assignee: Cree, Inc.
    Inventors: Antony P. van de Ven, Terry Given