DE202012103514U1 - TV-compatible dimmable LED light - Google Patents
TV-compatible dimmable LED light Download PDFInfo
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- DE202012103514U1 DE202012103514U1 DE202012103514U DE202012103514U DE202012103514U1 DE 202012103514 U1 DE202012103514 U1 DE 202012103514U1 DE 202012103514 U DE202012103514 U DE 202012103514U DE 202012103514 U DE202012103514 U DE 202012103514U DE 202012103514 U1 DE202012103514 U1 DE 202012103514U1
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- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/62—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
- F21V7/30—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings the coatings comprising photoluminescent substances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
Abstract
Vorrichtung (100, 101, 102, 103, 104, 105, 106, 107, 108) zur zeitlichen Glättung von Licht mit einem Lichtpuffer (10, 20, 30, 40, 50, 60, 70, 80, 90), wobei der Lichtpuffer (10, 20, 30, 40, 50, 60, 70, 80, 90) zur Absorption von Lichtenergie von einer Lichtquelle (1, 72) und zur zeitverzögerten Emission der Lichtenergie ausgebildet ist, gekennzeichnet durch einen dichroitischen Spiegel (11, 21, 31, 41, 51, 61, 71, 81, 91), welcher zur Kompensation einer Farbortänderung des Lichts durch den Lichtpuffer (10, 20, 30, 40, 50, 60, 70, 80, 90) ausgebildet ist.Device (100, 101, 102, 103, 104, 105, 106, 107, 108) for temporally smoothing light with a light buffer (10, 20, 30, 40, 50, 60, 70, 80, 90), wherein the Light buffer (10, 20, 30, 40, 50, 60, 70, 80, 90) for absorbing light energy from a light source (1, 72) and for the time-delayed emission of the light energy, characterized by a dichroic mirror (11, 21 , 31, 41, 51, 61, 71, 81, 91), which is designed to compensate for a change in color of the light through the light buffer (10, 20, 30, 40, 50, 60, 70, 80, 90).
Description
Die Erfindung betrifft eine Vorrichtung zur zeitlichen Glättung von Licht und eine entsprechende Leuchtvorrichtung. The invention relates to a device for temporal smoothing of light and a corresponding lighting device.
LED-Beleuchtungen finden in immer mehr Bereichen eine Anwendung. Um LED-Leuchten zu dimmen, werden diese pulsweiten modelliert. D.h., die LEDs werden stets mit voller Leistung betrieben oder ausgeschaltet. Durch Einstellung des Verhältnisses der Einschaltzeiten und Ausschaltzeiten wird eine durchschnittliche Helligkeit erreicht. Dabei wird üblicherweise eine Pulsfrequenz von ca. 400Hz eingesetzt. LED lighting is being used in more and more areas. To dim LED lights, these are pulse width modeled. That is, the LEDs are always operated or turned off at full power. Adjusting the ratio of on-times and off-times will result in average brightness. Usually a pulse frequency of approx. 400Hz is used.
Digitale Kameras zeichnen Videobilder als Sequenz von Einzelbildern auf. Die Bildwiederholraten der Kameras überlagern dabei teilweise die Pulsfrequenz der LEDs. Einzelbilder der digitalen Kamera, bei welcher die LEDs gerade ausgeschaltet sind, werden unterbelichtet, während Bilder der Kameras, bei welchen die LEDs gerade eingeschaltet sind, überbelichtet werden. Dies resultiert in einem Flackereffekt. Digital cameras record video images as a sequence of single images. The image refresh rates of the cameras partially overlap the pulse frequency of the LEDs. Single frames of the digital camera, with the LEDs just turned off, are underexposed, while overexposing images of the cameras in which the LEDs are currently turned on. This results in a flickering effect.
Zur Lösung dieses Problems zeigt die deutsche Offenlegungsschrift
Nachteilig hieran ist jedoch, dass sich durch den Lichtpuffer die Farbe des abgegebenen Lichts ändert. The disadvantage of this, however, is that changes the color of the emitted light through the light buffer.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Glättung von Licht zu schaffen, welche mit bestehenden Lichtquellen eingesetzt werden kann und dabei keine nennenswerte Verschiebung des Farborts verursacht. The invention has for its object to provide a device for smoothing light, which can be used with existing light sources and causes no significant shift of the color location.
Die Aufgabe wird erfindungsgemäß für die Vorrichtung durch die Merkmale des unabhängigen Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der hierauf rückbezogenen Unteransprüche. The object is achieved for the device by the features of
Eine erfindungsgemäße Vorrichtung zur zeitlichen Glättung von Licht beinhaltet einen Lichtpuffer, welcher zur Absorption von Lichtenergie von einer Lichtquelle und zur zeitverzögerten Emission der Lichtenergie ausgebildet ist. Weiterhin beinhaltet sie einen dichroitischen Spiegel, welcher zur Kompensation einer Farbortänderung des Lichts durch den Lichtpuffer ausgebildet ist. Somit wird ein konstanter Farbort bei gleichzeitiger zeitlicher Glättung des Lichts erreicht. An inventive device for time-smoothing of light includes a light buffer, which is designed for the absorption of light energy from a light source and for the time-delayed emission of the light energy. Furthermore, it includes a dichroic mirror, which is designed to compensate for a change in color of the light through the light buffer. Thus, a constant color location is achieved with simultaneous temporal smoothing of the light.
Bevorzugt weist der Lichtpuffer eine Beschichtung auf, welche bevorzugt Phosphor enthält. So ist eine einfache und kostengünstige Fertigung möglich. The light buffer preferably has a coating, which preferably contains phosphorus. So a simple and cost-effective production is possible.
Vorzugsweise ist der Lichtpuffer als Beschichtung auf dem dichroitischen Spiegel aufgebracht. So wird eine besonders einfache Herstellung erreicht. Preferably, the light buffer is applied as a coating on the dichroic mirror. So a particularly simple production is achieved.
Vorzugsweise ist der Lichtpuffer auf einer dem Licht zugewandten Seite des dichroitischen Spiegels angebracht. So ist der Lichtpuffer gut vor äußeren Einflüssen geschützt. Preferably, the light buffer is mounted on a light-facing side of the dichroic mirror. So the light buffer is well protected against external influences.
Alternativ ist der Lichtpuffer auf einer von dem Licht abgewandten Seite des dichroitischen Spiegels angebracht. So ist der Lichtpuffer geringerer thermischer Belastung ausgesetzt. Alternatively, the light buffer is mounted on a side of the dichroic mirror facing away from the light. Thus, the light buffer is exposed to lower thermal stress.
Bevorzugt ist die Vorrichtung als Retrofit-Bausatz ausgebildet. So können zukünftig bestehende Leuchten einfach umgerüstet werden. Preferably, the device is designed as a retrofit kit. In the future, existing luminaires can be easily converted.
Eine erfindungsgemäße Leuchtvorrichtung beinhaltet eine Lichtquelle und eine zuvor beschriebene Vorrichtung zur zeitlichen Glättung von Licht. So wird eine Beleuchtung ohne störendes Flackern erreicht. A lighting device according to the invention includes a light source and a device for temporally smoothing light described above. So a lighting without annoying flicker is achieved.
Die Lichtquelle ist bevorzugt ausgebildet, um mittels Pulsweitenmodulation gedimmt zu werden. Insbesondere bei einer Pulsweitenmodulation ist eine Reduktion des Flackerns hilfreich. The light source is preferably designed to be dimmed by means of pulse width modulation. In particular, with a pulse width modulation, a reduction of the flicker is helpful.
Vorzugsweise entspricht eine Zeitkonstante einer Abnahme der Lichtstärke des von dem Lichtpuffer emittierten Lichts zumindest der Dauer eines Pulses, sie kann ggf. auch höher sein. Der erfindungsgemäße Effekt, nämlich eine effektive Reduktion des Flackerns, wird schon bei einer Reduktion von einem Puls erzielt. Preferably, a time constant corresponds to a decrease in the intensity of the light emitted by the light buffer at least the duration of a pulse, it may possibly be higher. The effect according to the invention, namely an effective reduction of the flicker, is achieved even with a reduction of one pulse.
Bevorzugt ist die Vorrichtung zwischen der Lichtquelle und einer Lichtaustrittsöffnung der Leuchtvorrichtung angebracht. So ist die Vorrichtung vor äußeren Einflüssen geschützt. Preferably, the device is mounted between the light source and a light exit opening of the lighting device. So the device is protected from external influences.
Vorteilhafterweise ist die Vorrichtung als Abdeckung einer Lichtaustrittsöffnung der Leuchtvorrichtung ausgebildet. So schützt die Vorrichtung die übrige Leuchtvorrichtung vor äußeren Einflüssen. Darüber hinaus wird eine zusätzliche Abdeckung eingespart. Advantageously, the device is designed as a cover of a light exit opening of the lighting device. Thus, the device protects the remaining lighting device from external influences. In addition, an additional cover is saved.
Vorzugsweise beinhaltet die Leuchtvorrichtung mehrere Lichtquellen. So kann die Anfertigung mehrerer Vorrichtung eingespart werden. Preferably, the lighting device includes a plurality of light sources. Thus, the preparation of several device can be saved.
Jede der Lichtquellen verfügt bevorzugt über eine eigene Vorrichtung. Alternativ verfügen die mehreren Lichtquellen über eine gemeinsame Vorrichtung. So kann ein sehr flexibler Einsatz gewährleistet werden. Each of the light sources preferably has its own device. Alternatively, the plurality of light sources have a common device. So a very flexible use can be guaranteed.
Nachfolgend wird die Erfindung anhand der Zeichnung, in der ein vorteilhaftes Ausführungsbeispiel der Erfindung dargestellt ist, beispielhaft beschrieben. In der Zeichnung zeigen: The invention will be described by way of example with reference to the drawing, in which an advantageous embodiment of the invention is shown. In the drawing show:
Zunächst wird anhand der
In
Das Gehäuse
Gesteuert von der hier nicht dargestellten Steuereinrichtung erzeugt die LED
Während der Lichtpuffer
Dabei bilden der dichroitische Spiegel
Der Lichtpuffer
In
Der Lichtpuffer
In
Der Lichtpuffer
Der Lichtpuffer
Der Lichtpuffer
In
Der Lichtpuffer
Die dichroitischen Spiegel
Die Lichtpuffer
In
In
Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt. Wie bereits erwähnt, können unterschiedliche Anordnungen und Konfigurationen des Lichtpuffers und des dichroitischen Spiegels eingesetzt werden. Auch ist der Einsatz anderer Lichtquellen als LEDs denkbar. Eine größere Anzahl von LEDs ist darüber hinaus einsetzbar. Alle vorstehend beschriebenen Merkmale oder in den Figuren gezeigten Merkmale sind im Rahmen der Erfindung beliebig vorteilhaft miteinander kombinierbar. The invention is not limited to the illustrated embodiment. As already mentioned, different arrangements and configurations of the light buffer and the dichroic mirror can be used. The use of light sources other than LEDs is also conceivable. A larger number of LEDs can also be used. All features described above or features shown in the figures can be combined with each other in any advantageous manner within the scope of the invention.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102007045540 A1 [0004] DE 102007045540 A1 [0004]
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202012103514U DE202012103514U1 (en) | 2012-09-14 | 2012-09-14 | TV-compatible dimmable LED light |
PCT/EP2013/068692 WO2014040979A1 (en) | 2012-09-14 | 2013-09-10 | Tv grade dimmable led light fixture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202012103514U DE202012103514U1 (en) | 2012-09-14 | 2012-09-14 | TV-compatible dimmable LED light |
Publications (1)
Publication Number | Publication Date |
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DE202012103514U1 true DE202012103514U1 (en) | 2013-12-17 |
Family
ID=49165734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE202012103514U Expired - Lifetime DE202012103514U1 (en) | 2012-09-14 | 2012-09-14 | TV-compatible dimmable LED light |
Country Status (2)
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DE (1) | DE202012103514U1 (en) |
WO (1) | WO2014040979A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007045540A1 (en) | 2007-09-24 | 2009-04-02 | Osram Gesellschaft mit beschränkter Haftung | Lighting device with light buffer |
WO2011109093A1 (en) * | 2010-03-03 | 2011-09-09 | Cree, Inc. | High efficacy led lamp with remote phosphor and diffuser configuraton |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10042275A1 (en) * | 2000-08-29 | 2002-03-14 | Willing Gmbh Dr Ing | Filter coating for changing color of light reflected by long-persistence phosphorescent material has degree of spectral transmission with high transmissivity in radiated wavelength region |
GB2366610A (en) * | 2000-09-06 | 2002-03-13 | Mark Shaffer | Electroluminscent lamp |
US7497581B2 (en) * | 2004-03-30 | 2009-03-03 | Goldeneye, Inc. | Light recycling illumination systems with wavelength conversion |
KR100924912B1 (en) * | 2008-07-29 | 2009-11-03 | 서울반도체 주식회사 | Warm white light emitting apparatus and back light module comprising the same |
WO2010106478A1 (en) * | 2009-03-19 | 2010-09-23 | Koninklijke Philips Electronics N.V. | Color adjusting arrangement |
JP5545866B2 (en) * | 2010-11-01 | 2014-07-09 | シチズン電子株式会社 | Semiconductor light emitting device |
CN102468414B (en) * | 2010-11-09 | 2014-08-13 | 四川新力光源股份有限公司 | Pulse LED (Light Emitting Diode) white light emitting device |
-
2012
- 2012-09-14 DE DE202012103514U patent/DE202012103514U1/en not_active Expired - Lifetime
-
2013
- 2013-09-10 WO PCT/EP2013/068692 patent/WO2014040979A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007045540A1 (en) | 2007-09-24 | 2009-04-02 | Osram Gesellschaft mit beschränkter Haftung | Lighting device with light buffer |
WO2011109093A1 (en) * | 2010-03-03 | 2011-09-09 | Cree, Inc. | High efficacy led lamp with remote phosphor and diffuser configuraton |
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R150 | Utility model maintained after payment of first maintenance fee after three years | ||
R151 | Utility model maintained after payment of second maintenance fee after six years | ||
R158 | Lapse of ip right after 8 years |