Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS20070267976 A1
Publication typeApplication
Application numberUS 10/555,721
PCT numberPCT/US2004/014414
Publication dateNov 22, 2007
Filing dateMay 5, 2004
Priority dateMay 5, 2003
Also published asCN1802533A, CN1802533B, CN101915365A, CN101915365B, EP1627178A2, EP1627178A4, EP2484962A2, EP2484962A3, US20120176770, US20120176804, US20120230012, WO2004100213A2, WO2004100213A3
Publication number10555721, 555721, PCT/2004/14414, PCT/US/2004/014414, PCT/US/2004/14414, PCT/US/4/014414, PCT/US/4/14414, PCT/US2004/014414, PCT/US2004/14414, PCT/US2004014414, PCT/US200414414, PCT/US4/014414, PCT/US4/14414, PCT/US4014414, PCT/US414414, US 2007/0267976 A1, US 2007/267976 A1, US 20070267976 A1, US 20070267976A1, US 2007267976 A1, US 2007267976A1, US-A1-20070267976, US-A1-2007267976, US2007/0267976A1, US2007/267976A1, US20070267976 A1, US20070267976A1, US2007267976 A1, US2007267976A1
InventorsChristopher Bohler, Boris Kolodin, Emil Radkov, Srinath Aanegola, Shanton Weaver, James Petroski, Zena Brown
Original AssigneeBohler Christopher L, Boris Kolodin, Emil Radkov, Aanegola Srinath K, Weaver Shanton E Jr, Petroski James T, Zena Brown
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Led-Based Light Bulb
US 20070267976 A1
Abstract
A light source (10) comprises a light engine (16), a base (24), a power conversion circuit (30) and an enclosure (22). The light engine (16) comprises at least one LED (12) disposed on a platform (14). The platform (14) is adapted to directly mate with the base (24) which a standard incandescent bulb light base. Phosphor (44) receives the light generated by the at least one LED (12) and converts it to visible light. The enclosure (22) has a shape of a standard incandescent lamp.
Images(4)
Previous page
Next page
Claims(23)
1. A light source (10) comprising:
a light engine (16) for generating light of one of a plurality of wavelengths, the light engine (16) including:
a platform (14), and
at least one LED (12) disposed on the platform (14);
an enclosure (22) surrounding a light generating area of the light engine (16);
a base (24) including a heat sink (26) for conducting thermal energy away from the at least one LED (12), into which heat sink (26) the light engine (16) is mounted; and
a conversion circuit (30) for supplying electric power to the light engine (16).
2. The light source as set forth in claim 1, further including:
a luminescent converting element (44) to receive the light generated by the light engine (16) and convert at least some of the received light to visible light.
3. The light source as set forth in claim 2, further including:
a light guide (36) disposed within the enclosure (22).
4. The light source as set forth in claim 3, wherein the luminescent converting element (44) is adjacent at the least one LED (12).
5. The light source as set forth in claim 4, wherein the light guide (36) provides an appearance of a filament.
6. The light source as set forth in claim 4, wherein the light guide (36) comprises an optical fiber with one of internal diffusers, external diffusers, and other frustrated TIR (Total Internal Reflection) features to allow the light to escape at preselected locations.
7. The light source as set forth in claim 3, wherein the light guide (36) comprises a reflector.
8. The light source as set forth in claim 7, wherein the reflector is comprised of a reflective metal.
9. The light source as set forth in claim 3, wherein the luminescent converting element (44) is disposed on or within the light guide (36).
10. The light source as set forth in claim 2, wherein the luminescent converting element (44) is disposed on or in the enclosure (22).
11. The light source as set forth in claim 10, wherein the luminescent converting element (44) includes a transparent phosphor.
12. The light source as set forth in claim 1, wherein the transparent phosphor comprises one of:
an organic phosphor,
an organic complex of a rare earth metal,
a nanophosphor, and
a quantum dot phosphor.
13. The light source as set forth in claim 10, further comprising:
one of an index matching material and a lensing material encompassing the at least one LED (12).
14. The light source as set forth in claim 1, wherein the base (24) is adapted for mating with the light engine (16).
15. The light source as set forth in claim 1, wherein the heat sink (26) comprises:
a slug (32) inserted into the base (24) for conducting the thermal energy from the at least one LED (12) to at least one of the base (24) and ambient air.
16. The light source as set forth in claim 15, wherein the slug (32) comprises:
a plurality of fins (34) disposed in one of a radial and a cylindrical tube longitudinal design about an outer periphery.
17. The light source as set forth in claim 1, wherein the heat sink (26) extends radially from the base (24) to conduct the thermal energy to ambient air.
18. The light source as set forth in claim 1, wherein the conversion circuit (30) comprises:
an AC to DC converter.
19. The light source as set forth in claim 1, wherein the platform (14) comprises one of:
a metal clad, FR4, and CEM-1 printed circuit board hosting the at least one LED.
20. The light source as set forth in claim 1, wherein the enclosure (22) comprises a substantially transparent enclosure of a variety of shapes
21. The light source as set forth in claim 20, wherein the enclosure (22) comprises a light diffusing coating.
22. The light source as set forth in claim 1, further comprising:
an index matching fluid between the light engine (16) and the enclosure (22).
23. A modular adaptable LED lighting system (10) comprising:
a screw base module (24);
at least two light modules (16) having different light emission characteristics, each light module (16) including:
a platform (14) which is adapted for mating with the base module (24), and
at least one LED (12) disposed on the platform (14) for generating light in a range from ultraviolet to infrared wavelenthgs;
an enclosure (22), which surrounds the light produced by the light module (16) such that at least a portion of the light is transmitted through the enclosure (22); and
a power module (30) for energizing the at least one LED (12).
Description
    BACKGROUND
  • [0001]
    The present application relates to the art of LED lighting systems. It finds particular application in the light packages traditionally employed in an incandescent light source and will be described with particular reference thereto. Those skilled in the art will appreciate the applicability of the present invention to the applications where a use of an LED light source in a traditional bulb light package can provide advantages such as increased durability, light output stability and energy savings.
  • [0002]
    Typically, incandescent light bulb packages utilize a light source that includes an incandescent filament within a glass enclosure. However, the incandescent filaments are fragile and tend to gradually degrade during lifetime of a bulb causing the useful light output generated by the filaments to decrease over time. The increasing fragility of the filament with age eventually leads to breakage. Typical incandescent light bulbs have a mean life of 500 to 4,000 hours.
  • [0003]
    Light emitting diodes (LEDs) present an attractive alternative as a light source in a light bulb package. A low-power, solid-state LED light could last up to 100,000 hours (eleven years), far outdistancing the life of a typical incandescent bulb. When the LED degrades to half of its original intensity after 100,000 hours, it continues operating with a diminished output. In the state of operation with the diminished output, the LEDs are still ten times more energy-efficient than incandescent bulbs, and about twice as efficient as fluorescent lamps. Besides producing little heat and being energy-efficient, LEDs are solid-state devices with no moving parts. LEDs characteristics do not change significantly with age, and they are not easily damaged by shock or vibration. This makes LED lighting systems very reliable. The small shape and low heat generated by the LEDs enables lighting systems to take on various shapes and sizes.
  • [0004]
    A widespread use of the LED lighting systems have been limited because the consumers are accustomed to seeing and purchasing the traditional bulb lights. The number of various bulb light packages on the market is tremendous. In addition to the unique cosmetic appearance, the packages differ in luminescent levels, color temperatures, electrical requirements, and other characteristics. One approach has been to directly retrofit the LED into the existing light package. However, the single LED does not produce the light output of the same optical characteristics as each existing incandescent bulb lamp. In addition, the LEDs emit highly directional light resulting in a narrow light angle and require different input power.
  • [0005]
    The present invention provides a new LED lamp.
  • BRIEF DESCRIPTION
  • [0006]
    According to one aspect of the application, a light source is disclosed A light engine generates light of one of a plurality of wavelengths. The light engine includes a platform and at least one LED disposed on the platform. An enclosure surrounds a light generating area of the light engine. A base includes a heat sink for conducting thermal energy away from the at least one LED. The light engine is mounted onto a heat sink. A conversion circuit supplies electric power to the light engine.
  • [0007]
    One advantage of the present application resides in providing a common light engine that is used across various bulb platforms.
  • [0008]
    Another advantage resides in providing an adaptable and scalable LED lamp design.
  • [0009]
    Still further advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading and understanding the following detailed description of the preferred embodiments.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0010]
    The invention may take form in various components and arrangements of components, and in various steps and arrangements of steps. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
  • [0011]
    FIG. 1 schematically shows a cross-section of an LED-based lamp;
  • [0012]
    FIG. 2 schematically shows a top view of a platform including LEDs;
  • [0013]
    FIG. 3 schematically shows a cross-section of an LED-based lamp which includes a heat dissipating slug;
  • [0014]
    FIG. 4 schematically shows a cross-section of an LED-based lamp which includes an extended heat dissipating slug;
  • [0015]
    FIG. 5 schematically shows a cross-section of an LED-based lamp which includes a phosphor panel; and
  • [0016]
    FIG. 6 schematically shows a cross-section of an LED-based lamp which includes a filament light guide.
  • DETAILED DESCRIPTION
  • [0017]
    With reference to FIGS. 1 and 2, a lighting system 10 includes one or more LEDs 12 which are positioned on a mounting platform 14, defining a light engine 16. Wire leads 18, 20 are provided for powering the LEDs 12. The LEDs 12 is one of inorganic and organic light emitting devices which emit light in a spectrum from UV to infrared. Variations in optical performance, viewing angles, and intensity levels are achieved by arranging the LEDs in different patterns. The lighting system 10 includes a light cover or enclosure 22. Preferably, the enclosure 22 is a traditional bulb-shaped enclosure. Optionally, the enclosure 22 is a custom built enclosure to provide non-uniform light output to create special visual effects. It is contemplated that the enclosure 22 can be spherical, elliptical, cylindrical, domed, squared, n-sided, or any other shape. Preferably, the enclosure 22 is built of light transparent or translucent materials, or a combination thereof. The enclosure 22 materials are selected from glass, plastic, acrylic, polycarbonate, or other suitable materials.
  • [0018]
    Preferably, the platform 14 is a substrate on which a semiconductor may be grown. The platform 14 can be one of sapphire, gallium arsenide, silicon carbide, gallium phosphorous, gallium arsenide, gallium nitride, or other suitable material. It is also contemplated that the platform 14 can be a printed circuit board, heatsink, or any other suitable means for mounting the LEDs 12. The LEDs 12 are attached to the platform 14 by one of solder, wirebonding, thermosonic, thermocompression, electrical conductive adhesives, thermal conductive adhesives, other suitable means, or a combination of the above. It is also contemplated that the LEDs 12 can be adjacent to or manufactured as an integral part of the cover 22.
  • [0019]
    The platform 14 is adapted to be directly mounted into a base or socket 24. In one embodiment, the base 24 has a receptacle into which the light engine 16 is plugged in. Preferably, the base 24 is one of the commercially available light bulb sockets for easy field exchange and retrofitting of the light bulb with the LED light engine 16 such that the enclosure 22 can be fitted over the light engine 16. E.g., in one embodiment, the base 24 is one of commercially available incandescent light sockets such as 6S6 screw base, 194 wedge base, or other. Such design allows the conventional lamp to be replaced with a variety of different LED light engines without modification to the lamp socket or to the lamp enclosure. Optionally, the base 24 is custom manufactured. At least one heatsink 26 is integrally disposed in thermal communication with the light engine 16 and the base 24 to take the heat away from the LEDs 12. The heatsink 26 is constructed from the material capable of conducting the heat away from the LEDs 12. Examples of suitable materials include copper, aluminum, silicon carbide, boron nitride and others known to have a high coefficient of thermal conductivity.
  • [0020]
    Preferably, an index matching material 28 is applied to encompass the light engine 16 to improve the light extraction. The index matching material is selected from silicones, acrylics, epoxies, thermoplastics, glasses and any other appropriate materials. Optionally, an index matching fluid, which preferably serves as a thermal spreading medium, is present between the light engine 16 and the cover 22. The fluid is selected from solids, gels, liquids, fluorocarbon coolants, luminescent materials and others to create a desired visual effect. Additionally, reflective or translucent particles may added to the fluid for further visual effects. The cover 22 works together with the internal fluid to optimize light extraction and/or provide visual effects. In one embodiment, the index matching material 28 is structured to provide lensing.
  • [0021]
    In order to provide suitable electrical power to the LEDs 12, the lighting system 10 includes one or more of an electric power conversion circuit, or control electronics, or power electronics circuits 30, which are preferably integrated with the light engine 16. Alternatively, the electric power conversion circuit 30 can be adjacent the light engine 16, located within the base 24, or disposed remotely from the lighting system 10. In one embodiment, the electric power conversion circuit includes an AC/DC converter which permits the LED-based lighting system 10 to be powered by a standard domestic 120VAC or international 220VAC user voltage. Such circuitry makes the LED lamp a true replacement for a bulb light. Preferably, the power electronics circuits 30 are two- or three-dimensional structures to provide minimal dimensions. In one embodiment, the electric power conversion circuits 30 are flexible circuits. Optionally, the electric power conversion circuits 30 are non-planar circuit boards.
  • [0022]
    With reference to FIG. 3, the lighting system 10 includes a heat dissipating slug 32. The heat dissipating slug 32 is disposed in a thermal communication with the base 24 to conduct the heat from the light engine 16 into the base 24. Optionally, the heat dissipating slug 32 transfers the heat from the light engine 16 into the air. Preferably, the heat dissipating slug 32 includes a plurality of radial fins 34 disposed about an outer periphery of the slug 32.
  • [0023]
    With reference to FIG. 4, the heat dissipating slug 32 extends beyond the base 24 to transfer the heat from the light engine 16 into the air.
  • [0024]
    Optionally, the base 24 includes at least one of thermoelectric cooling, piezo synthetic jets, qu-pipes, heat-pipes, piezo fans and electric fans, or other forms of active cooling.
  • [0025]
    With reference to FIGS. 5 and 6, the lighting system 10 includes a wavelength converting material such as organic or inorganic phosphor. The phosphor can be located in any suitable location, such as integrated into the LED 12, at a light guide 36, coated inside or outside the cover 22, contained within the cover 22, or a combination thereof.
  • [0026]
    In one embodiment, the enclosure 22 includes transparent organic phosphors which are preferably coated on an inside, or outside surface of the enclosure 22, or a combination thereof It is also contemplated that the phosphors can be dissolved, melted, coextruded, or dispersed by any other means within the walls forming the enclosure 22. Preferably, the phosphor distribution is uniform. In one embodiment, the phosphor distribution is non uniform to create preselected patterns, figures, special visual effects of different colors, and other effects. It is also contemplated that both transparent and conventional non-transparent phosphors can be used to create special effects, patterns, or figures. In one embodiment, the enclosure 22 is frosted or otherwise treated to provide special visual effects. Examples of the organic transparent phosphors are the BASF Lumogen F dyes such as Lumogen F Yellow 083, Lumogen F Orange 240, Lumogen F Red 300, and Lumogen F Violet 570. Of course, it is also contemplated that other phosphors such as the rare earth complexes with organic component described in the U.S. Pat. No. 6,366,033; quantum dot phosphors described in the U.S. Pat. No. 6,207,229; nanophosphors described in the U.S. Pat. No. 6,048,616, or other suitable phosphors can be used.
  • [0027]
    With continuing reference to FIG. 5, the UV light rays 40 are emitted by the LEDs 12 and converted into white or visible light 42 by a phosphor 44. The phosphor 44 preferably includes two or more phosphors to convert the emitted light 40 to the visible light 42, although single component phosphors are embodied for saturated color light generation as well. The visible light 42 exits through the enclosure 22. In this embodiment, the phosphor mix 44 is disposed about or within a light guide 36 which is a planar panel disposed above the LED 12 such that the majority of the light rays 40 strike the panel.
  • [0028]
    With reference again to FIG. 6, the light guide 36 is a filament which is disposed within the enclosure 22 to create a “filament-look” LED based lighting system. More specifically, phosphor 44 is applied directly to the LED 12 such that the emitted light 40 is converted into visible light 42 at the LED 12. The visible light 42 strikes the light guide 36 and adapts the filament shape to simulate a “filament-look” light bulb. Alternatively, a suspended reflector may be used to simulate the filament shape. The reflector can be “wadded” tin foil, a coiled aluminized spring, or the like. Optionally, the light guide 36 is a coiled fiber optic with surface, internal, or other diffusers, such as frustrated TIR (Total Internal Reflection) diff-users, to allow the light to escape at the desired locations.
  • [0029]
    The invention has been described with reference to the preferred embodiments. Modifications and alterations will occur to others upon a reading and understanding of the preceding detailed description. It is intended that the invention be construed as including all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2477957 *Mar 19, 1945Aug 2, 1949Revere Camera CoLamp housing
US3596136 *May 13, 1969Jul 27, 1971Rca CorpOptical semiconductor device with glass dome
US5685637 *Sep 8, 1995Nov 11, 1997Jimmy G. CookDual spectrum illumination system
US5749646 *Dec 15, 1994May 12, 1998Brittell; Gerald A.Special effect lamps
US5758951 *Jun 27, 1997Jun 2, 1998Hewlett-Packard CompanyVertical cavity surface emitting laser arrays for illumination
US5984496 *Nov 7, 1997Nov 16, 1999Malcomson; KirkLighted mirror assembly
US6048301 *Jul 13, 1998Apr 11, 2000Sabuda; Thomas J.Method and device for stimulating biological processes
US6048616 *Oct 14, 1994Apr 11, 2000Philips Electronics N.A. Corp.Encapsulated quantum sized doped semiconductor particles and method of manufacturing same
US6102559 *Jan 25, 1999Aug 15, 2000Ford Motor CompanyMulti-function vehicle taillight system with unitary optic
US6149283 *Sep 22, 1999Nov 21, 2000Rensselaer Polytechnic Institute (Rpi)LED lamp with reflector and multicolor adjuster
US6161910 *Dec 14, 1999Dec 19, 2000Aerospace Lighting CorporationLED reading light
US6207229 *Aug 5, 1999Mar 27, 2001Massachusetts Institute Of TechnologyHighly luminescent color-selective materials and method of making thereof
US6234648 *Sep 24, 1999May 22, 2001U.S. Philips CorporationLighting system
US6252350 *Jul 31, 1998Jun 26, 2001Andres AlvarezSurface mounted LED lamp
US6350041 *Mar 29, 2000Feb 26, 2002Cree Lighting CompanyHigh output radial dispersing lamp using a solid state light source
US6356700 *Jun 8, 1999Mar 12, 2002Karlheinz StroblEfficient light engine systems, components and methods of manufacture
US6366033 *Oct 18, 2000Apr 2, 2002General Electric CompanyMolecular lanthanide complexes for phosphor applications
US6465961 *Aug 24, 2001Oct 15, 2002Cao Group, Inc.Semiconductor light source using a heat sink with a plurality of panels
US6499860 *Feb 12, 2001Dec 31, 2002Koninklijke Philips Electronics N.V.Solid state display light
US6504301 *Sep 3, 1999Jan 7, 2003Lumileds Lighting, U.S., LlcNon-incandescent lightbulb package using light emitting diodes
US6586882 *Apr 17, 2000Jul 1, 2003Koninklijke Philips Electronics N.V.Lighting system
US6683325 *Aug 14, 2002Jan 27, 2004Patent-Treuhand-Gesellschaft-für Elektrische Glühlampen mbHThermal expansion compensated opto-electronic semiconductor element, particularly ultraviolet (UV) light emitting diode, and method of its manufacture
US6734465 *Nov 19, 2002May 11, 2004Nanocrystals Technology LpNanocrystalline based phosphors and photonic structures for solid state lighting
US6746885 *Aug 24, 2001Jun 8, 2004Densen CaoMethod for making a semiconductor light source
US6758582 *Mar 19, 2003Jul 6, 2004Elumina Technology IncorporationLED lighting device
US6814470 *Dec 11, 2002Nov 9, 2004Farlight LlcHighly efficient LED lamp
US7160012 *Jan 3, 2003Jan 9, 2007Patent-Treuhand-Gesellschaft für elektrische Glëhlapen mbHLamp
US7182597 *Aug 8, 2002Feb 27, 2007Kerr CorporationCuring light instrument
US7198387 *Dec 17, 2004Apr 3, 2007B/E Aerospace, Inc.Light fixture for an LED-based aircraft lighting system
US7226189 *Apr 15, 2005Jun 5, 2007Taiwan Oasis Technology Co., Ltd.Light emitting diode illumination apparatus
US20010045573 *Jan 26, 1999Nov 29, 2001Guenter Waitl" thermal expansion compensated opto-electronic semiconductor element, particularly ultraviolet (uv) light emitting diode, and method of its manufacture "
US20010053077 *Jun 13, 2001Dec 20, 2001Seven Of Nine LimitedElectric torches
US20020041499 *Dec 13, 2001Apr 11, 2002Pederson John C.LED warning signal light and row of led's
US20020176250 *May 24, 2002Nov 28, 2002Gelcore, LlcHigh power led power pack for spot module illumination
US20020191403 *Jun 16, 2001Dec 19, 2002Zhang Long BaoHigh intensity light source arrangement
US20030040200 *Aug 24, 2001Feb 27, 2003Densen CaoMethod for making a semiconductor light source
US20030076051 *Sep 6, 2002Apr 24, 2003Bowman Scott A.Light-emitting diode module for retrofit to flashlights using incandescent bulbs
US20030156416 *Feb 21, 2002Aug 21, 2003Whelen Engineering Company, Inc.Led light assembly
US20040029069 *Aug 8, 2002Feb 12, 2004Kerr CorporationCuring light instrument
US20040066142 *Oct 3, 2002Apr 8, 2004Gelcore, LlcLED-based modular lamp
US20040105262 *Dec 2, 2002Jun 3, 2004Tseng Tzyy JangLED light source with reflecting side wall
US20040141336 *Nov 19, 2003Jul 22, 2004John WestDental light guide
US20040264187 *Jun 25, 2003Dec 30, 2004Vanderschuit Carl R.Lighting device
US20050068776 *Dec 30, 2002Mar 31, 2005Shichao GeLed and led lamp
US20050111234 *Nov 26, 2003May 26, 2005Lumileds Lighting U.S., LlcLED lamp heat sink
US20050135105 *Dec 19, 2003Jun 23, 2005Lumileds Lighting U.S., LlcLED package assembly
US20050151708 *Jan 12, 2004Jul 14, 2005Farmer Ronald E.LED module with uniform LED brightness
US20050207177 *Mar 18, 2004Sep 22, 2005Guy James KRemote source lighting
US20050237005 *Aug 9, 2004Oct 27, 2005Lighting Science Group CorporationElectronic light generating element light bulb
US20080137360 *Sep 19, 2005Jun 12, 2008Koninklijke Philips Electronics, N.V.Lighting Device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7600882 *Jan 20, 2009Oct 13, 2009Lednovation, Inc.High efficiency incandescent bulb replacement lamp
US7661840Feb 16, 2010Ilight Technologies, Inc.Lighting device with illuminated front panel
US7663315Feb 16, 2010Ilight Technologies, Inc.Spherical bulb for light-emitting diode with spherical inner cavity
US7686478Mar 30, 2010Ilight Technologies, Inc.Bulb for light-emitting diode with color-converting insert
US8083364Dec 29, 2008Dec 27, 2011Osram Sylvania Inc.Remote phosphor LED illumination system
US8109656Feb 7, 2012Ilight Technologies, Inc.Bulb for light-emitting diode with modified inner cavity
US8152341 *Feb 4, 2011Apr 10, 2012Switch Bulb Company, Inc.Expandable liquid volume in an LED bulb
US8226274 *Mar 1, 2011Jul 24, 2012Switch Bulb Company, Inc.Liquid displacer in LED bulbs
US8272766 *Mar 18, 2011Sep 25, 2012Abl Ip Holding LlcSemiconductor lamp with thermal handling system
US8277094Mar 13, 2012Oct 2, 2012Switch Bulb Company, Inc.Expandable liquid volume in an LED bulb
US8329060Dec 11, 2012General Electric CompanyBlue-green and green phosphors for lighting applications
US8350485 *Jan 8, 2013Bridgelux, Inc.Modular LED light bulb
US8360617Nov 25, 2009Jan 29, 2013Samsung Electronics Co., Ltd.Lighting system including LED with glass-coated quantum-dots
US8362695Sep 17, 2010Jan 29, 2013GE Lighting Solutions, LLCLight emitting diode component
US8376580Apr 12, 2011Feb 19, 2013Intematix CorporationLight emitting diode (LED) based lighting systems
US8414151Oct 1, 2010Apr 9, 2013GE Lighting Solutions, LLCLight emitting diode (LED) based lamp
US8432088Jan 3, 2011Apr 30, 2013Crs ElectronicsPermanent conversion adapter for lighting fixtures
US8436380Sep 17, 2010May 7, 2013GE Lighting Solutions, LLCLight emitting diode component
US8461752 *Mar 18, 2011Jun 11, 2013Abl Ip Holding LlcWhite light lamp using semiconductor light emitter(s) and remotely deployed phosphor(s)
US8506135Feb 18, 2011Aug 13, 2013Xeralux, Inc.LED light engine apparatus for luminaire retrofit
US8529097Oct 21, 2010Sep 10, 2013General Electric CompanyLighting system with heat distribution face plate
US8562185Sep 28, 2012Oct 22, 2013Switch Bulb Company, Inc.Expandable liquid volume in an LED bulb
US8575836Jun 8, 2010Nov 5, 2013Cree, Inc.Lighting devices with differential light transmission regions
US8593040Oct 2, 2009Nov 26, 2013Ge Lighting Solutions LlcLED lamp with surface area enhancing fins
US8596821Jun 8, 2010Dec 3, 2013Cree, Inc.LED light bulbs
US8596827Sep 5, 2012Dec 3, 2013Abl Ip Holding LlcSemiconductor lamp with thermal handling system
US8602607Oct 21, 2010Dec 10, 2013General Electric CompanyLighting system with thermal management system having point contact synthetic jets
US8686623Aug 9, 2013Apr 1, 2014Switch Bulb Company, Inc.Omni-directional channeling of liquids for passive convection in LED bulbs
US8703016Jun 28, 2011Apr 22, 2014General Electric CompanyPhosphor materials and related devices
US8757836Jan 13, 2011Jun 24, 2014GE Lighting Solutions, LLCOmnidirectional LED based solid state lamp
US8786175Feb 28, 2012Jul 22, 2014Koninklijke Philips N.V.Lighting device, a lamp and a luminaire
US8803412Mar 18, 2011Aug 12, 2014Abl Ip Holding LlcSemiconductor lamp
US8820954Jul 23, 2012Sep 2, 2014Switch Bulb Company, Inc.Liquid displacer in LED bulbs
US8847481Nov 7, 2011Sep 30, 2014Lg Innotek Co., Ltd.Lighting device comprising photoluminescent plate
US8858029Oct 18, 2013Oct 14, 2014Cree, Inc.LED light bulbs
US8878430 *Jun 22, 2011Nov 4, 2014Koninklijke Philips N.V.TL retrofit LED module outside sealed glass tube
US8882284Jan 31, 2011Nov 11, 2014Cree, Inc.LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties
US8896198May 19, 2011Nov 25, 2014Light Prescriptions Innovators, LlcLED light bulb with translucent spherical diffuser and remote phosphor thereupon
US8922106Dec 22, 2009Dec 30, 2014Bridgelux, Inc.Light source with optics to produce a spherical emission pattern
US8922118 *Dec 26, 2013Dec 30, 2014Panasonic CorporationLight-emitting device
US8931933Feb 7, 2011Jan 13, 2015Cree, Inc.LED lamp with active cooling element
US8955996 *Dec 11, 2012Feb 17, 2015Kabushiki Kaisha ToshibaLED light bulb
US9004724Mar 21, 2011Apr 14, 2015GE Lighting Solutions, LLCReflector (optics) used in LED deco lamp
US9024517 *Feb 16, 2011May 5, 2015Cree, Inc.LED lamp with remote phosphor and diffuser configuration utilizing red emitters
US9057511Feb 24, 2011Jun 16, 2015Cree, Inc.High efficiency solid state lamp and bulb
US9062830Feb 16, 2011Jun 23, 2015Cree, Inc.High efficiency solid state lamp and bulb
US9068701Jan 26, 2012Jun 30, 2015Cree, Inc.Lamp structure with remote LED light source
US9103507Oct 2, 2009Aug 11, 2015GE Lighting Solutions, LLCLED lamp with uniform omnidirectional light intensity output
US9157584 *Dec 29, 2014Oct 13, 2015University Of Georgia Research Foundation, Inc.White phosphors, methods of making white phosphors, white light emitting LEDS, methods of making white light emitting LEDS, and light bulb structures
US9212789Oct 10, 2013Dec 15, 2015Switch Bulb Company, Inc.Expandable liquid volume in an LED bulb
US9217544Aug 29, 2013Dec 22, 2015Cree, Inc.LED based pedestal-type lighting structure
US9234655Sep 7, 2012Jan 12, 2016Cree, Inc.Lamp with remote LED light source and heat dissipating elements
US9273862 *Jul 2, 2014Mar 1, 2016Asia Vital Components Co., Ltd.LED light dedusting/cooling system
US9275979Feb 16, 2011Mar 1, 2016Cree, Inc.Enhanced color rendering index emitter through phosphor separation
US9310030Oct 8, 2010Apr 12, 2016Cree, Inc.Non-uniform diffuser to scatter light into uniform emission pattern
US9316361Jan 31, 2011Apr 19, 2016Cree, Inc.LED lamp with remote phosphor and diffuser configuration
US9322515 *Jun 29, 2011Apr 26, 2016Korry Electronics Co.Apparatus for controlling the re-distribution of light emitted from a light-emitting diode
US20080169746 *Nov 27, 2007Jul 17, 2008Ilight Technologies, Inc.Bulb for light-emitting diode
US20090251882 *Apr 3, 2008Oct 8, 2009General Led, Inc.Light-emitting diode illumination structures
US20090268461 *Oct 29, 2009Deak David GPhoton energy conversion structure
US20100096974 *Oct 22, 2008Apr 22, 2010General Electric CompanyBlue-green and green phosphors for lighting applications
US20100135009 *Oct 15, 2009Jun 3, 2010David DuncanCustom color led replacements for traditional lighting fixtures
US20100165599 *Dec 29, 2008Jul 1, 2010Osram Sylvania, Inc.Remote phosphor led illumination system
US20100177496 *Nov 25, 2009Jul 15, 2010Jennifer GilliesCustom color led replacements for traditional lighting fixtures
US20100219734 *May 29, 2008Sep 2, 2010Superbulbs, Inc.Apparatus for cooling leds in a bulb
US20100301356 *Dec 22, 2009Dec 2, 2010Bridgelux, Inc.Light source having light emitting cells arranged to produce a spherical emission pattern
US20100301726 *Dec 22, 2009Dec 2, 2010Bridgelux, Inc.Light source with optics to produce a spherical emission pattern
US20100301728 *Apr 23, 2010Dec 2, 2010Bridgelux, Inc.Light source having a refractive element
US20110001422 *Sep 17, 2010Jan 6, 2011Lumination LlcLight emitting diode component
US20110080096 *Apr 7, 2011Lumination LlcLed lamp
US20110080740 *Apr 7, 2011Lumination LlcLed lamp with uniform omnidirectional light intensity output
US20110080742 *Oct 1, 2010Apr 7, 2011GE Lighting Solutions, LLCLight emitting diode (led) based lamp
US20110140586 *Jun 16, 2011Wang xiao pingLED Bulb with Heat Sink
US20110169407 *Jul 14, 2011Ghulam HasnainModular LED Light Bulb
US20110176291 *Jul 21, 2011Sanders Chad NSemiconductor lamp
US20110176316 *Jul 21, 2011Phipps J MichaelSemiconductor lamp with thermal handling system
US20110188228 *Aug 4, 2011Intematix CorporationLight emitting diode (led) based lighting systems
US20110193473 *Aug 11, 2011Sanders Chad NWhite light lamp using semiconductor light emitter(s) and remotely deployed phosphor(s)
US20110216523 *Sep 8, 2011Tao TongNon-uniform diffuser to scatter light into uniform emission pattern
US20110227469 *Sep 22, 2011Cree, Inc.Led lamp with remote phosphor and diffuser configuration utilizing red emitters
US20110255268 *Oct 20, 2011Switch Bulb Company, Inc.Liquid displacer in led bulbs
US20120033440 *Feb 9, 2012Switch Bulb Company, Inc.Expandable liquid volume in an led bulb
US20120134161 *Sep 13, 2011May 31, 2012Nobuo KawamuraLighting apparatus
US20130003383 *Jan 3, 2013Korry Electronics Co.Apparatus for controlling the re-distribution of light emitted from a light-emitting diode
US20130083526 *Mar 16, 2012Apr 4, 2013Shinji KadorikuLight-emitting device and production method for synthetic resin globe for said light-emitting device
US20130100645 *Apr 25, 2013Yasumasa OoyaLed light bulb
US20130119866 *Aug 31, 2012May 16, 2013Toshiba Lighting & Technology CorporationLuminaire and Lighting Method
US20130170199 *Dec 30, 2011Jul 4, 2013Cree, Inc.Led lighting using spectral notching
US20130207533 *Jun 22, 2011Aug 15, 2013Koninklijke Phillips Electronics N.V.Tl retrofit led module outside sealed glass tube
US20130214676 *Feb 15, 2013Aug 22, 2013Intematix CorporationSolid-state lamps with improved emission efficiency and photoluminescence wavelength conversion components therefor
US20130271972 *Apr 13, 2012Oct 17, 2013Cree, Inc.Gas cooled led lamp
US20140027740 *May 16, 2013Jan 30, 2014Universal Display CorporationLuminaire and individually replaceable components
US20140103798 *Dec 26, 2013Apr 17, 2014Panasonic CorporationLight-emitting device
US20140104849 *Oct 10, 2013Apr 17, 2014Osram GmbhLamp
US20140218930 *Apr 14, 2014Aug 7, 2014Switch Bulb Company, Inc.Plastic led bulb
US20140226307 *Feb 18, 2014Aug 14, 2014Ge Lighting Solutions LlcLed lamp with uniform omnidirectional light intensity output
US20140362581 *Jun 5, 2013Dec 11, 2014Tom KimLight emitting diode assembly with an internal protrusion providing refraction and heat transfer
US20150109775 *May 27, 2013Apr 23, 2015Simon SchwalenbergLighting device having semiconductor light sources and a common diffusor
US20150123536 *Dec 29, 2014May 7, 2015University Of Georgia Research Foundation, Inc.White phosphors, methods of making white phosphors, white light emitting leds, methods of making white light emitting leds, and light bulb structures
USD666749Sep 4, 2012Debetak AlexandreLED light bulb
DE102012205472A1 *Apr 3, 2012Oct 10, 2013Osram GmbhSemiconductor lamp e.g. incandescent LED-retrofit lamp, for decorative purposes, has light bulb designed as light conductor for emitted light, and lateral radiating reflector arranged in light bulb and provided with phosphor
EP2450625A2 *Nov 7, 2011May 9, 2012LG Innotek Co., Ltd.Lighting device comprising photoluminescent plate
EP2450625A3 *Nov 7, 2011Apr 10, 2013LG Innotek Co., Ltd.Lighting device comprising photoluminescent plate
EP2773904A4 *Oct 31, 2012Oct 7, 2015Cao Group IncLed light source
EP2791573A4 *Dec 14, 2011Jul 29, 2015Ge Lighting Solutions LlcSide-emitting guidepipe technology on led lamp to make filament effect
WO2009146138A1 *Apr 3, 2009Dec 3, 2009General Led, Inc.Light-emitting diode illumination structures
WO2010141617A1 *Jun 2, 2010Dec 9, 2010Bridgelux, Inc.Light source having a refractive element
WO2010141623A1 *Jun 2, 2010Dec 9, 2010Bridgelux, Inc.Light source with optics to produce a spherical emission pattern
WO2011146677A2 *May 19, 2011Nov 24, 2011Light Prescriptions Innovators, LlcLed light bulb with translucent spherical diffuser and remote phosphor thereupon
WO2011146677A3 *May 19, 2011Apr 5, 2012Light Prescriptions Innovators, LlcLed light bulb with translucent spherical diffuser and remote phosphor thereupon
WO2012072127A1Dec 1, 2010Jun 7, 2012M & R Automation GmbhLed light bulb
WO2012096757A1Dec 16, 2011Jul 19, 2012GE Lighting Solutions, LLCOmnidirectional led based solid state lamp
WO2012145648A1 *Apr 20, 2012Oct 26, 2012Once Innovations, Inc.Extended persistence and reduced flicker light sources
WO2013101577A1 *Dec 19, 2012Jul 4, 2013Cree, Inc.Lamp with led array
Classifications
U.S. Classification315/112
International ClassificationH01J61/52, F21K99/00
Cooperative ClassificationF21V29/63, F21V29/58, F21V3/00, F21Y2105/00, F21K9/56, F21K9/52, B82Y10/00, F21K9/135, F21Y2101/02, F21K9/1355, F21V29/02
European ClassificationB82Y10/00, F21V29/24H, F21K9/135, F21V29/40D, F21K9/56
Legal Events
DateCodeEventDescription
Jan 22, 2013ASAssignment
Owner name: GELCORE LLC, OHIO
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BOHLER, CHRISTOPHER L.;KOLODIN, BORIS;RADKOV, EMIL;AND OTHERS;SIGNING DATES FROM 20070123 TO 20070323;REEL/FRAME:029670/0177