EP2342735A1 - Ceramic metal halide lamp having a high color temperature - Google Patents

Ceramic metal halide lamp having a high color temperature

Info

Publication number
EP2342735A1
EP2342735A1 EP09745011A EP09745011A EP2342735A1 EP 2342735 A1 EP2342735 A1 EP 2342735A1 EP 09745011 A EP09745011 A EP 09745011A EP 09745011 A EP09745011 A EP 09745011A EP 2342735 A1 EP2342735 A1 EP 2342735A1
Authority
EP
European Patent Office
Prior art keywords
pressure discharge
discharge lamp
lamp according
halides
color temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09745011A
Other languages
German (de)
French (fr)
Inventor
Andreas Genz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Osram GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osram GmbH filed Critical Osram GmbH
Publication of EP2342735A1 publication Critical patent/EP2342735A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827—Metal halide arc lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component

Definitions

  • the invention relates to a high-pressure discharge lamp according to the preamble of claim 1.
  • Such lamps are in particular high-pressure discharge lamps with ceramic discharge vessel or quartz glass vessel for general lighting.
  • EP 1 153 415B1 discloses a high pressure discharge lamp using a metal halide fill.
  • the high pressure discharge lamp uses a filling of Na or Li together with Hg and TbJ3.
  • the color temperature lies in the range Daylight between 4825 and 7070 K.
  • the CRI lies with 87 to 93.
  • the efficiency is only 61 to 76 lm / W.
  • JP 51-086281 which uses NaJ, GdJ3 and TlJ together with Hg and Ar.
  • the object of the present invention is to provide a metal halide high pressure discharge lamp which achieves a daylight color temperature of at least 5000K.
  • a filling for the light color Daylight preferably 5500 to 6500 K, is now used, which uses halides of Na and Tm as well as Gd as metal halides.
  • the E n t 1 a n g s e f äs is made of ceramics.
  • the aspect ratio (internal length / inner diameter) is preferably between 2 and 8.
  • the filling gas used is noble gas, preferably xenon or argon, at a pressure of between 50 and 500 hPa (cold). In general, it is also possible with preference to use a noble gas mixture which comprises xenon, alone or predominantly. Xenon produces slightly more light output compared to argon due to lower heat losses (about 1 to 3 lm / W), but is more expensive than argon.
  • the wall load measured in the region between the electrodes is preferably between 20 and 40 W / cm 2 .
  • the filling contains as metal halide amounts of sodium and rare earths (SE). At least Tm and Gd are used as rare earths.
  • the molar ratio between Gd and Tm is between 0.1 and 1, more preferably between 0.2 and 0.8.
  • the molar ratio between the sum of all rare earths and natium is preferably between 0.2 and 5, particularly preferably between 0.3 and 3.
  • SE rare earths
  • Pr and / or Ho are suitable, the proportion of the total amount of SE being maximum each 10 mol .-% is.
  • the filling may still contain In and Tl. Particularly preferred are 2 to 20 mol% of the filling In.
  • the halogen used is iodine and / or bromine. More preferably, the molar fraction of bromine is less than 50%.
  • the color temperature is in the daylight range from 5000 K, preferably 5500 to 6500 K.
  • the color rendering is greater than 80 and the luminous efficiency is over 90 lm / W.
  • the concept according to the invention is particularly suitable for lamps of low power in the range of 15 to 400 W.
  • FIG. 2 shows a spectrum of the lamp from FIG. 1.
  • a metal halide lamp 1 shows schematically a metal halide lamp 1. It consists of a discharge vessel 2 made of ceramic, in which two electrodes (not visible) are introduced.
  • the discharge vessel has a central part 3 and two ends 4 with feedthroughs as known per se.
  • the discharge volume has an aspect ratio of 5.
  • the discharge vessel 2 is surrounded by an outer bulb 7.
  • the discharge vessel 2 is in the outer bulb by means of a frame which a short and long power supply IIa -A-
  • the discharge vessel contains a filling which typically comprises Hg (1 to 10 mg / cm 3 ) and 5 to 50 mg / cm 3 iodides of Tm, Tl, Na, In and Gd.
  • a filling typically comprises Hg (1 to 10 mg / cm 3 ) and 5 to 50 mg / cm 3 iodides of Tm, Tl, Na, In and Gd.
  • xenon is used cold under a pressure of 250 hPa.
  • TlJ and InJ may be omitted.
  • Possible additions to SE metals are still Ho and Pr.
  • a spectrum of such a lamp is shown in Figure 2, where the relative radiant power is plotted against the wavelength.
  • the spectrum provides an x value of 0.323 and a y value of 0.343.
  • the color temperature is 5950 K.
  • the color rendering index Ra is 81.
  • the luminous efficacy is 91.5 lm / W.

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

The invention relates to a high-pressure discharge lamp comprising a metal halide filling, wherein iodine or bromine is used as the halogen. In addition, xenon and mercury are used. Halides of Na together with rare earths, at least of Gd and Tm, are used as metal halides. Additions of Ho, Pr, In, and Tl are possible.

Description

KERAMISCHE METALLHALOGENIDLAMPE MIT HOHER FARBTEMPERATUR CERAMIC METAL HALOGENIDE LAMP WITH HIGH COLOR TEMPERATURE
Technisches GebietTechnical area
Die Erfindung geht aus von einer Hochdruckentladungslampe gemäß dem Oberbegriff des Anspruchs 1. Derartige Lampen sind insbesondere Hochdruckentladungslampen mit kerami- schem Entladungsgefäß oder auch Quarzglasgefäß für die Allgemeinbeleuchtung .The invention relates to a high-pressure discharge lamp according to the preamble of claim 1. Such lamps are in particular high-pressure discharge lamps with ceramic discharge vessel or quartz glass vessel for general lighting.
Stand der TechnikState of the art
Die EP 1 153 415Bl offenbart eine Hochdruckentladungslampe, bei der eine Metallhalogenidfüllung verwendet wird. Die Hochdruckentladungslampe benützt eine Füllung aus Na oder Li zusammen mit Hg und TbJ3. Die Farbtemperatur liegt im Bereich Daylight zwischen 4825 und 7070 K. Der CRI liegt bei 87 bis 93. Die Effizienz ist nur 61 bis 76 lm/W. Dort ist auch die JP 51-086281 zitiert, die NaJ, GdJ3 und TlJ zusammen mit Hg und Ar verwendet.EP 1 153 415B1 discloses a high pressure discharge lamp using a metal halide fill. The high pressure discharge lamp uses a filling of Na or Li together with Hg and TbJ3. The color temperature lies in the range Daylight between 4825 and 7070 K. The CRI lies with 87 to 93. The efficiency is only 61 to 76 lm / W. There is also cited JP 51-086281, which uses NaJ, GdJ3 and TlJ together with Hg and Ar.
Darstellung der ErfindungPresentation of the invention
Die Aufgabe der vorliegenden Erfindung ist es, eine Hochdruckentladungslampe mit Metallhalogenidfüllung bereitzustellen, die eine Farbtemperatur im Bereich Daylight von mindestens 5000 K erreicht.The object of the present invention is to provide a metal halide high pressure discharge lamp which achieves a daylight color temperature of at least 5000K.
Diese Aufgabe wird gelöst durch die kennzeichnenden Merkmale des Anspruchs 1.This object is achieved by the characterizing features of claim 1.
Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen. Erfindungsgemäß wird jetzt eine Füllung für die Lichtfarbe Daylight, bevorzugt 5500 bis 6500 K, verwendet, die als Metallhalogenide Halogenide von Na und Tm sowie Gd verwendet .Particularly advantageous embodiments can be found in the dependent claims. According to the invention, a filling for the light color Daylight, preferably 5500 to 6500 K, is now used, which uses halides of Na and Tm as well as Gd as metal halides.
Das E n t 1 a du n g s g e f ä ß besteht aus Keramik. Das Aspektverhältnis (Innere Läge/Innendurchmesser) liegt bevorzugt zwischen 2 und 8. Als Füllgas wird Edelgas, bevorzugt Xenon oder Argon mit einem Druck zwischen 50 und 500 hPa, verwendet (kalt) . Allgemein kann auch bevorzugt eine Edelgasmischung verwendet werden, die allein oder überwiegend Xenon aufweist. Xenon bringt gegenüber Argon etwas mehr Lichtausbeute durch geringere Wärmeverluste (etwa 1 bis 3 lm/W) , ist aber teuerer als Argon .The E n t 1 a n g s e f äs is made of ceramics. The aspect ratio (internal length / inner diameter) is preferably between 2 and 8. The filling gas used is noble gas, preferably xenon or argon, at a pressure of between 50 and 500 hPa (cold). In general, it is also possible with preference to use a noble gas mixture which comprises xenon, alone or predominantly. Xenon produces slightly more light output compared to argon due to lower heat losses (about 1 to 3 lm / W), but is more expensive than argon.
Die Wandbelastung gemessen im Bereich zwischen den Elektoden liegt bevorzugt zwischen 20 und 40 W/cm2.The wall load measured in the region between the electrodes is preferably between 20 and 40 W / cm 2 .
Die Füllung enthält als Metallhalogenid Anteile Natrium und Seltene Erden (SE) . Als Seltene Erden kommen zumindest Tm und Gd zum Einsatz. Das molare Verhältnis zwischen Gd und Tm liegt dabei zwischen 0,1 und 1, besonders bevorzugt zwischen 0,2 und 0,8. Das molare Verhältnis zwischen der Summe aller Seltenenen Erden und Natium liegt bevorzugt zwischen 0,2 und 5, besonders bevorzugt zwischen 0,3 und 3. als zusätzliche SE eignen sich Pr und/oder Ho, wobei der Anteil an der gesamten Menge an SE maximal jeweils 10 Mol.-% beträgt.The filling contains as metal halide amounts of sodium and rare earths (SE). At least Tm and Gd are used as rare earths. The molar ratio between Gd and Tm is between 0.1 and 1, more preferably between 0.2 and 0.8. The molar ratio between the sum of all rare earths and natium is preferably between 0.2 and 5, particularly preferably between 0.3 and 3. As additional SE, Pr and / or Ho are suitable, the proportion of the total amount of SE being maximum each 10 mol .-% is.
Die Füllung kann weiterhin In und Tl enthalten. Besonders bevorzugt sind 2 bis 20 mol % der Füllung In. AIs Halogen kommen Jod und/oder Brom zum Einsatz. Besonders bevorzugt liegt der molare Anteil von Brom unter 50%.The filling may still contain In and Tl. Particularly preferred are 2 to 20 mol% of the filling In. The halogen used is iodine and / or bromine. More preferably, the molar fraction of bromine is less than 50%.
Die Farbtemperatur liegt im Daylight-Bereich ab 5000 K, bevorzugt 5500 bis 6500 K. Mit der erfindungsgemäßen Metallhalogenidfüllung ist die Farbwiedergabe größer als 80 und die Lichtausbeute liegt über 90 lm/W.The color temperature is in the daylight range from 5000 K, preferably 5500 to 6500 K. With the metal halide filling according to the invention, the color rendering is greater than 80 and the luminous efficiency is over 90 lm / W.
Das erfindungsgemäße Konzept ist vor allem für Lampen kleiner Leistung im Bereich 15 bis 400 W geeignet.The concept according to the invention is particularly suitable for lamps of low power in the range of 15 to 400 W.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Im Folgenden soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Die Figuren zeigen :In the following, the invention will be explained in more detail with reference to several embodiments. The figures show:
Fig. 1 eine Hochdruckentladungslampe mit Entladungsgefäß;1 shows a high-pressure discharge lamp with discharge vessel;
Fig. 2 ein Spektrum der Lampe aus Figur 1.FIG. 2 shows a spectrum of the lamp from FIG. 1.
Bevorzugte Ausführungsform der ErfindungPreferred embodiment of the invention
Figur 1 zeigt schematisch eine Metallhalogenidlampe 1. Sie besteht aus einem Entladungsgefäß 2 aus Keramik, in das zwei Elektroden (nicht sichtbar) eingeführt sind. Das Entladungsgefäß hat einen zentralen Teil 3 und zwei Enden 4 mit Durchführungen wie an sich bekannt. Das Entladungs- volumen hat ein Aspektverhältnis von 5.1 shows schematically a metal halide lamp 1. It consists of a discharge vessel 2 made of ceramic, in which two electrodes (not visible) are introduced. The discharge vessel has a central part 3 and two ends 4 with feedthroughs as known per se. The discharge volume has an aspect ratio of 5.
Das Entladungsgefäß 2 ist von einem Außenkolben 7 umgeben. Das Entladungsgefäß 2 ist im Außenkolben mittels eines Gestells, das eine kurze und lange Stromzuführung IIa -A-The discharge vessel 2 is surrounded by an outer bulb 7. The discharge vessel 2 is in the outer bulb by means of a frame which a short and long power supply IIa -A-
und IIb beinhaltet, gehaltert und mit einem Schraubsockel 5 verschlossen.and IIb includes, held and sealed with a screw 5.
Das Entladungsgefäß enthält eine Füllung, die typisch Hg (1 bis 10 mg/cm3) und 5 bis 50 mg/cm3 Jodide von Tm, Tl, Na, In und Gd umfasst. Als Edelgas wird Xenon unter einem Druck von 250 hPa kalt verwendet.The discharge vessel contains a filling which typically comprises Hg (1 to 10 mg / cm 3 ) and 5 to 50 mg / cm 3 iodides of Tm, Tl, Na, In and Gd. As a noble gas, xenon is used cold under a pressure of 250 hPa.
Die genaue Dosierung ist in Tab. 1 gezeigt. The exact dosage is shown in Tab.
TlJ 5, 8TJ 5, 8
NaJ 19, 6NaJ 19, 6
InJ 5InJ 5
GdJ3 23, 2GdJ3 23, 2
Damit ergeben sich folgende Kenndaten der LampeThis results in the following characteristics of the lamp
Bei dieser Füllung kann auf TlJ und InJ ggf. verzichtet werden. Mögliche Zusätze an SE-Metallen sind noch Ho und Pr.If necessary, TlJ and InJ may be omitted. Possible additions to SE metals are still Ho and Pr.
Ein Spektrum einer derartigen Lampe ist in Figur 2 gezeigt, wo die relative Strahlungsleistung gegen die WeI- lenlänge aufgetragen ist. Das Spektrum liefert für den Farbort einen x-Wert von 0,323 und einen y-Wert von 0,343. Die Farbtemperatur ist 5950 K. Der Farbwiedergabeindex Ra ist 81. Die Lichtausbeute ist 91,5 lm/W. A spectrum of such a lamp is shown in Figure 2, where the relative radiant power is plotted against the wavelength. The spectrum provides an x value of 0.323 and a y value of 0.343. The color temperature is 5950 K. The color rendering index Ra is 81. The luminous efficacy is 91.5 lm / W.

Claims

Ansprüche claims
1. Hochdruckentladungslampe mit einem keramischen Entladungsgefäß, der ein Entladungsvolumen umgibt, wobei eine Füllung, die Natriumhalogenide, Halogenide der Seltenen Erden, Quecksilber und Edelgas ent- hält, im Entladungsvolumen untergebracht ist, dadurch gekennzeichnet, dass die Füllung gleichzeitig die Seltenen Erden Tm und Gd enthält, wobei der relative Anteil, molar betrachtet, zwischen Gd und Tm bei 0,1 bis 1 liegt. .A high-pressure discharge lamp with a ceramic discharge vessel surrounding a discharge volume, wherein a charge containing sodium halides, rare earth halides, mercury and rare gas is accommodated in the discharge volume, characterized in that the charge is at the same time the rare earths Tm and Gd contains, wherein the relative proportion, considered molar, between 0.1 and 1 between Gd and Tm. ,
2. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der relative Anteil zwischen 0,2 und 0,8 liegt, Randwerte eingeschlossen.2. High-pressure discharge lamp according to claim 1, characterized in that the relative proportion is between 0.2 and 0.8, including boundary values.
3. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass das Halogenid Jod und/oder Brom ist, bevorzugt mit maximal 50 Mol.-% Brom, und dass als Edelgas Xenon und/oder Argon verwendet wird.3. High-pressure discharge lamp according to claim 1, characterized in that the halide is iodine and / or bromine, preferably with a maximum of 50 mol .-% bromine, and that is used as noble gas xenon and / or argon.
4. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass die Metallhalogenide als SeI- tene Erden außerdem Ho und/oder Pr mit jeweils maximal 10 Mol.-% aufweisen.4. High-pressure discharge lamp according to claim 1, characterized in that the metal halides as separate earths furthermore have Ho and / or Pr with in each case not more than 10 mol%.
5. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass zusätzlich als Metallhalogenide Halogenide von In und/oder Tl verwendet werden. 5. High-pressure discharge lamp according to claim 1, characterized in that halides of In and / or Tl are additionally used as metal halides.
6. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der Gehalt an Hg im Bereich 1 bis 20 mg/cm3 beträgt.6. High-pressure discharge lamp according to claim 1, characterized in that the content of Hg in the range 1 to 20 mg / cm 3 .
7. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass das molare Verhältnis zwischen der Summe aller Seltenen Erden und Na bei 0,2 bis 5, bevorzugt0,3 bis 3, liegt.7. High-pressure discharge lamp according to claim 1, characterized in that the molar ratio between the sum of all rare earths and Na at 0.2 to 5, preferably 0.3 to 3, is located.
8. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass die Lampe eine Farbwiedergabe von mindestens 80 aufweist.8. High-pressure discharge lamp according to claim 1, characterized in that the lamp has a color rendering of at least 80.
9. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass die Lampe eine Lichtausbeute von mindestens 90 lm/W aufweist.9. High-pressure discharge lamp according to claim 1, characterized in that the lamp has a luminous efficacy of at least 90 lm / W.
10. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass die Farbtemperatur mindestens 5000 K beträgt, insbesondere 5500 bis 6500 K. 10. High-pressure discharge lamp according to claim 1, characterized in that the color temperature is at least 5000 K, in particular 5500 to 6500 K.
EP09745011A 2008-11-06 2009-10-26 Ceramic metal halide lamp having a high color temperature Withdrawn EP2342735A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008056173A DE102008056173A1 (en) 2008-11-06 2008-11-06 High pressure discharge lamp
PCT/EP2009/064032 WO2010052142A1 (en) 2008-11-06 2009-10-26 Ceramic metal halide lamp having a high color temperature

Publications (1)

Publication Number Publication Date
EP2342735A1 true EP2342735A1 (en) 2011-07-13

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EP09745011A Withdrawn EP2342735A1 (en) 2008-11-06 2009-10-26 Ceramic metal halide lamp having a high color temperature

Country Status (6)

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US (1) US8569952B2 (en)
EP (1) EP2342735A1 (en)
JP (1) JP2012507836A (en)
CN (1) CN102203899B (en)
DE (1) DE102008056173A1 (en)
WO (1) WO2010052142A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077302A1 (en) 2011-06-09 2012-12-13 Osram Ag High pressure discharge lamp
US9171712B2 (en) * 2014-07-05 2015-10-27 National Institute Of Standards And Technology Lamp having a secondary halide that improves luminous efficiency
US10692345B1 (en) 2019-03-20 2020-06-23 Bi Incorporated Systems and methods for textural zone monitoring

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US20030020408A1 (en) * 2001-06-27 2003-01-30 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US20040189212A1 (en) * 2003-03-03 2004-09-30 Osram-Melco Toshiba Lighting Ltd. High-intensity discharge lamp and related lighting device

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JPS5186281A (en) 1975-01-24 1976-07-28 Tokyo Shibaura Electric Co METARUHARAIDOR ANPU
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CN1264193C (en) 1999-12-09 2006-07-12 皇家菲利浦电子有限公司 Metal halide lamp
JP3981301B2 (en) 2001-06-27 2007-09-26 松下電器産業株式会社 Metal halide lamp
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JP2010505228A (en) 2006-09-29 2010-02-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Ceramic metal halide daylight lamp
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JP5220096B2 (en) 2007-04-20 2013-06-26 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Metal halide lamps containing an ionizable salt filling
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US20030020408A1 (en) * 2001-06-27 2003-01-30 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US20040189212A1 (en) * 2003-03-03 2004-09-30 Osram-Melco Toshiba Lighting Ltd. High-intensity discharge lamp and related lighting device

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Title
See also references of WO2010052142A1 *

Also Published As

Publication number Publication date
CN102203899B (en) 2015-09-09
US8569952B2 (en) 2013-10-29
JP2012507836A (en) 2012-03-29
US20110204776A1 (en) 2011-08-25
WO2010052142A1 (en) 2010-05-14
DE102008056173A1 (en) 2010-05-12
CN102203899A (en) 2011-09-28

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