Patents by Inventor Anant Setlur

Anant Setlur 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: 8519611
    Abstract: A white light hybrid illumination system including an amber LED, a red LED, and a phosphor converted LED such as a blue LED chip and a green phosphor, wherein a peak emission difference between the amber and red LED is at least 25 nm. This system provides higher color quality than prior devices due to its high luminous efficacy, high CRI over a wide CCT range, and better color control.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: August 27, 2013
    Assignee: GE Lighting Solutions, LLC
    Inventors: Emil Radkov, Anant Setlur, Srinath Aanegola
  • Publication number: 20100177513
    Abstract: A white light hybrid illumination system including an amber LED, a red LED, and a phosphor converted LED such as a blue LED chip and a green phosphor, wherein a peak emission difference between the amber and red LED is at least 25 nm. This system provides higher color quality than prior devices due to its high luminous efficacy, high CRI over a wide CCT range, and better color control.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 15, 2010
    Inventors: Emil Radkov, Anant Setlur, Srinath Aanegola
  • Publication number: 20070290171
    Abstract: Some embodiments of the present invention are directed toward nanocrystalline oxide-based phosphor materials, and methods for making same. Typically, such methods comprise a steric entrapment route for converting precursors into such phosphor material. In some embodiments, the nanocrystalline oxide-based phosphor materials are quantum splitting phosphors. In some or other embodiments, such nanocrystalline oxide based phosphor materials provide reduced scattering, leading to greater efficiency, when used in lighting applications.
    Type: Application
    Filed: November 17, 2004
    Publication date: December 20, 2007
    Inventors: Sergio Martins Loureiro, Anant Setlur, Darryl Williams, Mohan Manoharan, Alok Srivastava
  • Publication number: 20070276606
    Abstract: A light emitting device including a phosphor blend including four or more phosphors emitting within a specific spectral range to optimize the color rendering index (CRI) for a given color coordinated temperature (CCT). The blend will include at least four phosphors selected from the following: a blue phosphor having an emission peak at 400-500 nm, a green phosphor having an emission peak at 500-575 nm, an orange phosphor having an emission peak from 575-615 nm, and a deep red phosphor having an emission peak at 615-680 nm. The preferred blends are used to make light sources with general CRI values (Ra) greater than 95 at CCT's from about 2500 to 8000 K.
    Type: Application
    Filed: June 23, 2004
    Publication date: November 29, 2007
    Inventors: Emil Radkov, Anant Setlur
  • Publication number: 20070258229
    Abstract: A lighting apparatus (10) comprises a light engine (12) producing ultra violet radiation. An enclosure (14) surrounds a radiation generating area of the light engine (12) to encompass the radiation. At least one wall (28) of the enclosure (14) is substantially reflective of the ultraviolet radiation. The enclosure (14) includes a replaceable top portion (30) which includes a phosphor portion (32). The phosphor portion (32) is spaced from the radiation generating area of the light engine (12) by a height of the enclosure (14).
    Type: Application
    Filed: May 5, 2004
    Publication date: November 8, 2007
    Inventors: Stanton Weaver, Thomas Stecher, Anant Setlur, Alok Srivastava, Holly Comanzo, Charles Becker, Thomas Soules, Chen-Lun Hsing, Rebecca Bompiedi
  • Publication number: 20070235751
    Abstract: A light emitting apparatus including a phosphor blend including two or more phosphors to provide an emission spectrum simulating the spectral power distribution of a CIE reference illuminant across at least a certain spectral range. Such an apparatus is particularly suited for color-critical applications.
    Type: Application
    Filed: June 4, 2007
    Publication date: October 11, 2007
    Inventors: Emil Radkov, Anant Setlur, Ilona Hausmann, Marisa Goodin
  • Publication number: 20070227896
    Abstract: A photoelectrolysis cell is described herein. The cell includes a photoelectrode based on a material having the general formula (Ln1?xMx)(Nb1?yTay)O1+xN2?x. Ln is at least one lanthanide element; M is at least one alkaline earth metal; 0?x?0.99; and 0?y?1. The photoelectrolysis cell further includes a counter-electrode formed from at least one metal or metallic alloy. An electrolyte which is in contact with both the photoelectrode and the counter-electrode is another component of the cell, along with a means for collecting hydrogen produced by the cell. A related process for producing hydrogen in a photoelectrolysis cell is also described.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 4, 2007
    Inventors: Thomas McNulty, Anant Setlur
  • Publication number: 20070221938
    Abstract: Light emitting apparatuses including warm white LED based lights including a semiconductor light source and a phosphor material including a yellow emitting phosphor, a red emitting phosphor, and, optionally, at least one of a green, blue or green-blue emitting phosphor.
    Type: Application
    Filed: June 4, 2007
    Publication date: September 27, 2007
    Inventors: Emil Radkov, Anant Setlur, Ilona Hausmann
  • Publication number: 20070205712
    Abstract: Light emitting devices including backlights having a light source and a phosphor material including a complex fluoride phosphor activated with Mn4+ which may include at least one of (A) A2[MF5]:Mn4+; where A is selected from Li, Na, K, Rb, Cs, NH4, and combinations thereof; and where M is selected from Al, Ga, In, or combinations thereof; (B) A3[MF6]:Mn4+, where A is selected from Li, Na, K, Rb, Cs, NH4, and combinations thereof; and where M is selected from Al, Ga, In, or combinations thereof; (C) Zn2[MF7]:Mn4+, where M is selected from Al, Ga, In, or combinations thereof; and (D) A[In2F7]:Mn4+ where A is selected from Li, Na, K, Rb, Cs, NH4, or combinations thereof.
    Type: Application
    Filed: February 13, 2007
    Publication date: September 6, 2007
    Inventors: Emil Radkov, Anant Setlur, Alok Srivastava, Ljudmil Grigorov
  • Publication number: 20070187645
    Abstract: A sintered, annealed scintillator composition, which, prior to annealing, has a formula of A3B2C3O12, where A is at least one member of the group consisting of Tb, Ce, and Lu, or combinations thereof, B is an octahedral site (Al), and C is a tetrahedral site (also Al). One or more substitutions are included. The substitutions may may be partial or, in some cases, complete, and can include Al with Sc at B, up to two atoms of oxygen with fluorine and the same number of Ca atoms at A, replacement at B with Mg and the same number of atoms of oxygen with fluorine, replacement at B with a combination of Mg/Si Mg/Zr, Mg/Ti, and/or Mg/Hf, replacement at B with a combination of Li/Nb and/or Li/Ta, and at A with Ca and replacement of an equal number of B or C with silicon.
    Type: Application
    Filed: December 22, 2005
    Publication date: August 16, 2007
    Inventors: Robert Lyons, Venkat Venkataramani, Anant Setlur
  • Publication number: 20070114561
    Abstract: Phosphor compositions having the formula (Sr,Ca,Ba)1?xEuxAl2?yMzO4?3/2yFz, where M is Mg and/or Zn; 0.001<x<0.15, 0?y?0.3, and 0<z?0.2; and light emitting devices including a light source and the above phosphor. Also disclosed are blends of (Sr,Ca,Ba)1?xEuxAl2?yMzO4?3/2yFz and one or more additional phosphors and light emitting devices incorporating the same.
    Type: Application
    Filed: November 22, 2005
    Publication date: May 24, 2007
    Inventors: Holly Comanzo, Alok Srivastava, Anant Setlur
  • Publication number: 20070114562
    Abstract: There is provided yellow and red illumination systems, including a semiconductor light emitter, and a luminescent material. The systems have an emission falling within the respective ITE red and yellow color bins having specified color coordinates on the CIE chromaticity diagram. The luminescent material may include one or more phosphors. The illumination systems may be used as the red and yellow lights of a traffic light or an automotive display.
    Type: Application
    Filed: November 22, 2005
    Publication date: May 24, 2007
    Inventors: Emil Radkov, Anant Setlur, Ilona Hausmann
  • Publication number: 20070114548
    Abstract: Disclosed are phosphor compositions having the formulas Ca1?a?bCeaEubAl1+aSi1?aN3, where 0<a?0.2, 0?b?0.2; Ca1?c?dCecEudAl1?c(Mg,Zn)cSiN3, where 0c?0.2, 0?d?0.2; Ca1?2e?fCee(Li,Na)eEufAlSiN3, where 0?e?0.2, 0?f?0.2, g+h>0; and Ca1?g?h?iCeg(Li,Na)hEuiAl1+g?hSi1?g+hN3 where 0?g?0.2, 0<h?0.4, 0?i?0.2,g+i>0. When combined with radiation from a blue or UV light source, these phosphors can provide light sources with good color quality having high CRI over a large color temperature range. Also disclosed are blends of the above phosphors and additional phosphors.
    Type: Application
    Filed: November 22, 2005
    Publication date: May 24, 2007
    Inventors: Anant Setlur, Emil Radkov
  • Publication number: 20070045650
    Abstract: Phosphor compositions having the formula EueMmAaGgQqNnXx, where M is at least one of Be, Mg, Ca, Sr, Ba, Cd, Sn, Pb or Zn; A is at least one of B, Al, Ga, In, Bi, Sc, Y, La or a rare earth element other than Eu; G is at least one of Si or Ge; Q is at least one of O, S, and Se; X is at least one of F, Cl, Br and I; 0<e<2, 0<m<2, 0?a<1, 0<g<1, 0<q<4, 0?n<2, 0?x<2, and 2e+2m+3a+4g=2q+3n+x; and light emitting devices including a light source and the above phosphor. Also disclosed are blends of EueMmAaGgQqNnXx and one or more additional phosphors and light emitting devices incorporating the same.
    Type: Application
    Filed: August 31, 2005
    Publication date: March 1, 2007
    Inventors: Dan Hancu, Mukunda Adyam, Emil Radkov, Prasanth Kumar, Anant Setlur, Alok Srivastava, Holly Comanzo, Gopi Chandran, Madras Shankar
  • Publication number: 20070040502
    Abstract: Disclosed are phosphor compositions having the formulas [Ba1-x-y-w-2zSrxCayCez(Li,Na)zEu2]2Si5N8, where 0<w<O.1, 0<z<0.1, 0<=x<1, 0<=y<1; [Ba1-x-y-w-2zSrxCayCez(Li,Na)zEuw]Si7N10, where 0<z<0.1, 0<=x<0.1, 0<=x<1, 0<=y<0.3; and [Ca1-2x-y-w(Na,Li)x+wCexEuy]Al1?wSi1+wN3, where 0<w<=0.3, 0<x<=0.1, 0<y<=0.1. When combined with radiation from a blue or UV light source, these phosphors can provide light sources with good color quality having high CRI over a large color temperature range.
    Type: Application
    Filed: October 26, 2006
    Publication date: February 22, 2007
    Inventors: Anant Setlur, Emil Radkov
  • Publication number: 20060284196
    Abstract: Phosphor compositions having the formula LlMmAaGgPpQqNnZz:Ce3+, where L is at least one of Li, Na, K, Rb, and/or Cs; M is at least one of Be, Mg, Ca, Sr, Ba, Mn, Sn, Pb, and/or Zn; A is at least one of Bi, Sb, In, Sc, Y, and/or any of the rare earth elements; G is Si and/or Ge; Q is at least one of O, S, and/or Se; Z is at least one of F, Cl, Br, and/or I; and wherein 0?l?1, 2.5?m?5, 1.5?a?2.5, 2?g?2.5, 0?p?1, 0?n?1, 0?z?1, and l+2m+3a+4g+5p=2q+3n+z; and light emitting devices including a light source and the above phosphor. Also disclosed are blends of LlMmAaGgPpQqNnZz:Ce3+ and one or more additional phosphors and light emitting devices incorporating the same.
    Type: Application
    Filed: November 23, 2005
    Publication date: December 21, 2006
    Inventors: Anant Setlur, Alok Srivastava, Holly Comanzo, Yan Gao, Emil Radkov
  • Publication number: 20060231851
    Abstract: Disclosed are phosphor compositions having the formula (RE1-yCey)Mg2-xLixSi3-xPxO12, where RE is at least one of Sc, Lu, Gd, Y, and Tb, 0.0001<x<0.1 and 0.001<y<0.1. When combined with at least one additional phosphor and subjected to radiation from a blue or UV LED, these phosphors can provide white light sources with good color quality having high CRI over a large color temperature range. Also disclosed are blends of the above phosphors and additional phosphors.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 19, 2006
    Inventors: Anant Setlur, Alok Srivastava, Holly Comanzo
  • Patent number: 7119488
    Abstract: A fluorescent lamp including a phosphor layer comprising a phosphor blend including four or more optimized phosphors emitting within a specific spectral range to optimize luminosity for a given color rendering index (CRI) and color coordinated temperature (CCT). The blend will include at least four phosphors selected from the following: a blue phosphor having an emission peak at 440–490 nm, a blue-green phosphor having an emission peak at 475–525 nm, a green phosphor having an emission peak at 515–550 nm, an orange phosphor having an emission peak from 550–600 nm, a deep red phosphor having an emission peak at 615–665 nm, and a red phosphor having an emission peak at 600–670 nm.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: October 10, 2006
    Assignees: General Electric Company, GELcore, LLC
    Inventors: Thomas Soules, William Beers, Michael Greci, Anant Setlur, Holly Comanzo, Venkatesan Manivannan, Alok Srivastava
  • Publication number: 20060222757
    Abstract: A method for making a phosphor composition is provided. The method includes the steps of providing a first phosphor comprising a visible-light-emitting phosphor; providing a second phosphor having an average primary crystallite size of less than about 100 nm and disposing the second phosphor onto to the first phosphor. The second phosphor includes at least one phosphor selected from a group consisting of a visual light emitting phosphor, ultraviolet (VUV) light emitting phosphor and a quantum splitting phosphor.
    Type: Application
    Filed: March 31, 2005
    Publication date: October 5, 2006
    Inventors: Sergio Loureiro, Stanley Stoklosa, Anant Setlur, Alok Srivastava, Mohan Manoharan
  • Publication number: 20060197443
    Abstract: Disclosed are oxynitride phosphor compositions having the formula (RE1-xCex)3Ala-y-z-wSiyGazScwO12-yNy, where RE is at least one of Lu, Gd, Y, and Tb, 0.001?x?0.10, 0?w?2, 0.001?y?0.50, 0?z?4.999, and 4.5?a?5.0. When combined with radiation from a blue or UV LED, these phosphors can provide light sources with good color quality having high CRI over a large color temperature range. Also disclosed are blends of the above oxynitride phosphors and additional phosphors.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 7, 2006
    Inventors: Anant Setlur, Elena Bachniak