Patents Assigned to Luminator, LLC
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Patent number: 7329371Abstract: 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: GrantFiled: April 19, 2005Date of Patent: February 12, 2008Assignee: Lumination LLCInventors: Anant Achyut Setlur, Alok Mani Srivastava, Holly Ann Comanzo
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Patent number: 7327078Abstract: A method of applying at least two phosphors to an LED, wherein a first phosphor material having a lower absorption, shorter luminescence decay time, and/or lower thermal quenching than a second phosphor material is positioned closer to the LED than the second phosphor. Such an arrangement provides a light emitting device with improved lumen output and color stability over a range of drive currents.Type: GrantFiled: March 30, 2004Date of Patent: February 5, 2008Assignee: Lumination LLCInventors: Anant Achyut Setlur, Joseph John Shiang, Alok Mani Srivastava, Holly Ann Comanzo, Stanton Earl Weaver, Charles Adrian Becker
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Patent number: 7321191Abstract: There is provided a blue-green illumination system, including a semiconductor light emitter, and a luminescent material, wherein the system has an emission with CIE color coordinates located within an area of a of a pentagon on a CIE chromaticity diagram, whose corners have the following CIE color coordinates: i) x=0.0137 and y=0.4831; ii) x=0.2240 and y=0.3890; iii) x=0.2800 and y=0.4500; iv) x=0.2879 and y=0.5196; and v) x=0.0108 and y=0.7220. The luminescent material includes two or more phosphors. The illumination system may be used as the green light of a traffic light or an automotive display.Type: GrantFiled: November 2, 2004Date of Patent: January 22, 2008Assignee: Lumination LLCInventors: Anant Achyut Setlur, Emil Vergilov Radkov, Alok Mani Srivastava, Stanton Earl Weaver, Thomas Elliot Stecher, Holly Ann Comanzo
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Patent number: 7319246Abstract: A lighting apparatus comprising at least one light emitting diode is disposed on an interconnect board to emit ultraviolet or blue radiation. A polymeric layer including a luminophor is disposed about the lighting apparatus to convert at least a portion of the radiation emitted from the LED into visible light. The polymeric layer is shrinkable to conform to a shape enclosing the light emitting diode.Type: GrantFiled: June 23, 2005Date of Patent: January 15, 2008Assignee: Lumination LLCInventors: Thomas F. Soules, Chen-Lun Hsing Chen, Emil Radkov
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Patent number: 7285801Abstract: A light emitting semiconductor device die (10, 110, 210, 310) includes an electrically insulating substrate (12, 112). First and second spatially separated electrodes (60, 62, 260, 262, 360, 362) are disposed on the electrically insulating substrate. The first and second electrodes define an electrical current flow direction directed from the first electrode to the second electrode. A plurality of light emitting diode mesas (30, 130, 130?, 230, 330) are disposed on the substrate between the first and second spatially separated electrodes. Electrical series interconnections (50, 150, 250, 350) are disposed on the substrate between neighboring light emitting diode mesas. Each series interconnection carries electrical current flow between the neighboring mesas in the electrical current flow direction.Type: GrantFiled: April 2, 2004Date of Patent: October 23, 2007Assignee: Lumination, LLCInventors: Ivan Eliashevich, Chris Bohler, Bryan S. Shelton, Hari S. Venugopalan, Xiang Gao
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Patent number: 7274045Abstract: Boron containing phosphor compositions having the formulas (1) M3Ln2(BO3)4 doped with at least one activator selected from the group of Eu2+, Mn2+, Pb2+, Ce3+, Eu3+, Tb3+, and Bi3+ where M is at least one of Mg, Ca, Sr, Ba, or Zn, and Ln is at least one of Sc, Y, La, Gd, or Lu; (2) M2?xM?x(Al, Ga)2?y(Si, Ge)yB2O7?zNz:Eu2+, Mn2+, Pb2+ where M? is one or more of alkali metals Na and/or K, M? is one or more of alkaline earth Mg, Ca, Sr, Ba or Zn, 0?x?2, 0?y?2, 0?z?4; and z=x+y; (3) M?2?x+y?M?x?y?(Al, Ga)2?y(Si, Ge)yB2O7?z?y?NzXy:Eu2+, Mn2+, Pb2+, where M? is one or more of alkali metals Na and/or K, M? is one or more of alkaline earth metals Mg, Ca, Sr, Ba and/or Zn, 0?x?2, 0?y?2, 0?z?4; z=x+y, X?F and/or Cl, and 0?y??2; (4) M?2?xM?xAl2?y+y?Siy?y?B2O7?z?y?NzXy:Eu2+, Mn2+, Pb2+, where M? and M? are defined above, 0?x?2, 0?y?2, 0?z?4; z=x+y, X?F and/or Cl, and 0?y??2; (5) M?2?x+x?M?x?x?Al2?y+y?Siy?y?B2O7?z?x??y?NzX(x?+y?):Eu2+, Mn2+, Pb2+, where M? and M? are defined above, 0?x?2, 0?y?2, 0?z?4; z=x+y, X?F and/or CType: GrantFiled: March 17, 2005Date of Patent: September 25, 2007Assignee: Lumination LLCInventors: Ramachandran Gopi Chandran, Madras Venugopal Shankar, Venkatraman Sivaramakrishan, Hari Nadathur Seshadri
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Patent number: 7273300Abstract: An LED system that simulates bare or exposed neon in appearance. The curvilinear LED light source comprises a rigid, formable light guide having a generally circular cross-section and a flexible LED light engine. The light guide is made of a material or materials that can be heated and formed into a desired shape. The light guide retains the desired shape upon cooling. The flexible light engine is inserted into a groove in the light engine.Type: GrantFiled: August 6, 2004Date of Patent: September 25, 2007Assignee: Lumination LLCInventor: Matthew Mrakovich
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Patent number: 7262439Abstract: 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 0<c?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: GrantFiled: November 22, 2005Date of Patent: August 28, 2007Assignee: Lumination LLCInventors: Anant Achyut Setlur, Emil Vergilov Radkov
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Patent number: 7237924Abstract: An LED signal using a novel optical element to control the light distribution of a small LED light source. Light emitted by the LEDs illuminates the optical element. The optical element has a plurality of clusters, shaped along the x-, y- and z-axis to control the light. After the light is distributed, it encounters a second optical surface of the optical element, typically a fresnel surface. The light is controlled by the optical element. Optionally, a lens can be placed over each LED to control the light pattern of the LED. The lens has an entry face to direct the light to a total internal reflection surface on the side, which redirects the light to the exit face. The resulting signal is a uniform, efficient signal.Type: GrantFiled: June 13, 2003Date of Patent: July 3, 2007Assignee: Lumination LLCInventors: Patrick Martineau, Eden Dubuc
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Patent number: 7237925Abstract: A lighting apparatus for creating a substantially homogenous lit appearance along the length of the apparatus is provided. The lighting apparatus includes an elongated envelope, an LED mounted in the elongated envelope, and a reflector. The elongated envelope includes a translucent portion. The reflector is positioned in relation to the LED such that the light emitted from the LED is directed toward the translucent portion of the elongated envelope and dispersed along the length of the lighting apparatus.Type: GrantFiled: February 18, 2004Date of Patent: July 3, 2007Assignee: Lumination LLCInventors: Mark J. Mayer, Paul Southard
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Patent number: 7224000Abstract: A light emitting package (8, 8?, 8?, 208, 408) includes a printed circuit board (10, 10?, 10?, 210, 410) supporting at least one light emitting die (12, 12?, 14, 16, 212, 412). A light transmissive cover (60, 60?, 60?, 260, 460) is disposed over the at least one light emitting die. The cover has an open end defining a cover perimeter (62, 62?, 62?, 262, 462) connected with the printed circuit board. An inside surface of the cover together with the printed circuit board defines an interior volume (70, 70?, 270, 470) containing the at least one light emitting die. An encapsulant (76, 76?, 276, 278, 476) is disposed in the interior volume and covers at least the light emitting die.Type: GrantFiled: April 26, 2004Date of Patent: May 29, 2007Assignee: Lumination, LLCInventors: Srinath K. Aanegola, James T. Petroski, Emil Radkov, Stanton E. Weaver, Jr.
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Patent number: 7217012Abstract: An illuminated sign (88) includes a flexible electrical power cord (100) including first and second parallel conductors (112, 114) surroundingly contained within an insulating sheath defining a constant separation distance between the parallel conductors (112, 114). A plurality of light emitting diode (LED) devices (102) are affixed to the cord (100). Each LED device (102) includes an LED (104) having a positive lead (130p) electrically communicating with the first parallel conductor (112) and a negative lead (130p) electrically communicating with the second parallel conductor (114). A stencil (92) defines a selected shape, and the electrical cord (100) is arranged on the stencil (92). Power conditioning electronics (210, 220) disposed away from the stencil (92) electrically communicate with the first and second parallel conductors (112, 114) of the electrical power cord (100). The power conditioning electronics (210, 220) power the LED devices (102) via the parallel conductors (112, 114).Type: GrantFiled: May 24, 2002Date of Patent: May 15, 2007Assignee: Lumination, LLCInventors: Paul Southard, Srinath K. Aanegola, James T. Petroski, Christopher Bohler
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Patent number: 7210957Abstract: A string light engine includes a flexible power cord, a heat sink, an IDC terminal, a PCB, and an LED. The flexible power cord includes an electrical wire and an insulating material for the wire. The heat sink attaches to the power cord. The IDC terminal is inserted through the insulating material and electrically communicates with the wire. The PCB is at least partially received in the heat sink. The PCB includes a first surface having circuitry and a second surface opposite the first surface. The circuitry is in electrical communication with the IDC terminal. The second surface is abutted against a surface of the heat sink so that heat is transferred from the LED into the heat sink. The LED mounts to the first surface of the PCB and is in electrical communication with the circuitry.Type: GrantFiled: October 19, 2005Date of Patent: May 1, 2007Assignee: Lumination LLCInventors: Matthew Mrakovich, Jeffrey Nall
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Patent number: 7204615Abstract: An LED light assembly includes a housing, an LED disposed in the housing, a heat dissipating structure and a fluid current generator. The LED is in thermal communication with the heat dissipating structure and includes a flow path surface. The fluid current generator is disposed in the housing to create a current over the flow path surface.Type: GrantFiled: December 3, 2003Date of Patent: April 17, 2007Assignee: Lumination LLCInventors: Mehmet Arik, Todd Garrett Wetzel, Seyed Gholamali Saddoughi, Matthew Patrick Boespflug, James T. Petroski
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Patent number: 7201497Abstract: A light emitting apparatus (8) includes one or more light emitting chips (10) that are disposed on a printed circuit board (12) and emit light predominantly in a wavelength range between about 400 nanometers and about 470 nanometers. The printed circuit board includes: (i) an electrically insulating board (14); (ii) electrically conductive printed circuitry (20); and (iii) an electrically insulating solder mask (22) having vias (24) through which the one or more light emitting chips electrically contact the printed circuitry. The solder mask (22) has a reflectance of greater than 60% at least between about 400 nanometers and about 470 nanometers.Type: GrantFiled: July 15, 2004Date of Patent: April 10, 2007Assignee: Lumination, LLCInventors: Stanton Earl Weaver, Jr., Thomas Elliot Stecher
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Patent number: 7067995Abstract: Method and system are disclosed for compensating for color variations due to thermal differences in LED based lighting systems. The method and system involves characterizing the LEDs to determine what PWM (pulse-width modulation) is needed at various operating temperatures to achieve a desired resultant color. The characterization data is then stored in the microprocessor either in the form of a correction factor or as actual data. When an operating temperature that is different from a calibration temperature is detected, the characterization data is used to adjust the PWM of the LEDs to restore the LEDs to the desired resultant color.Type: GrantFiled: August 27, 2003Date of Patent: June 27, 2006Assignee: Luminator, LLCInventors: John B. Gunter, George Berman, Valeriy K. Berger
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Publication number: 20040135524Abstract: Method and system are disclosed for compensating for color variations due to thermal differences in LED based lighting systems. The method and system involves characterizing the LEDs to determine what PWM (pulse-width modulation) is needed at various operating temperatures to achieve a desired resultant color. The characterization data is then stored in the microprocessor either in the form of a correction factor or as actual data. When an operating temperature that is different from a calibration temperature is detected, the characterization data is used to adjust the PWM of the LEDs to restores the LEDs to the desired resultant color.Type: ApplicationFiled: August 27, 2003Publication date: July 15, 2004Applicant: Luminator, LLCInventors: John B. Gunter, George Berman, Valeriy K. Berger