EP1708244B1 - Metal halide lamp - Google Patents

Metal halide lamp Download PDF

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Publication number
EP1708244B1
EP1708244B1 EP06006769A EP06006769A EP1708244B1 EP 1708244 B1 EP1708244 B1 EP 1708244B1 EP 06006769 A EP06006769 A EP 06006769A EP 06006769 A EP06006769 A EP 06006769A EP 1708244 B1 EP1708244 B1 EP 1708244B1
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EP
European Patent Office
Prior art keywords
metal halide
halide lamp
fill
lamp according
rare earths
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Not-in-force
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EP06006769A
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German (de)
French (fr)
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EP1708244A1 (en
Inventor
Andreas Dr. Genz
Martin Dr. Tüshaus
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Osram GmbH
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Osram GmbH
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    • 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
    • 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

Definitions

  • the invention is based on a metal halide lamp for a high-pressure discharge lamp according to the preamble of claim 1. These are fillings for lamps with daylight-like light color.
  • metal halide discharge lamps usually contain thallium.
  • a lamp that contains a metal halide filling with the metals Cs, TI, and rare earths such as Dy, Tm, Ho and has a daylight-like light color.
  • the filling may contain metal halides using the metals Cs, Tl, and rare earths such as Dy, Tm, Ho. Mn is used as a substitute for Na.
  • the disclosed proportions are chosen so that a color temperature of 4400 K corresponding to the light color NDL is sought.
  • off DE-A 35 12 757 discloses a filling for metal halide lamps containing a metal silicide such as V 5 Si 3 .
  • the filling contains rare earth or Sc halide and the corresponding rare earth oxychloride ⁇ / o Sc oxide.
  • the silicide acts as a halogen getter.
  • a metal halide filling which uses Cs, Tl, and rare earths and additionally V halide. It is dispensed with other components with other halides.
  • the halogen used is iodine and / or bromine.
  • Mn is omitted because no lowering of the color temperature is sought and because on the contrary a rather high color temperature of at least 5000 K is sought.
  • the color temperature is set mainly by the rare earths.
  • the remedy here is precisely metered addition of vanadium halide.
  • a filling which contains between 0.1 and 2.5 mg of rare earth halides per ml volume of the discharge vessel. A value of 0.2 to 2.0 mg / ml is preferred.
  • Particularly suitable rare earths are Dy, Ho and Tm, alone or in combination. Especially suitable is Dy alone.
  • the molar ratio between rare earths and vanadium should be between 1.5 and 30, in particular 2 and 20. Since both sizes are trivalent, this range also applies to the associated metal halides.
  • the filling contains more iodine than bromine. In particular, iodine is used alone, with a maximum of 10% bromine content, molar seen.
  • This filling is particularly suitable for high-wattage lamps with at least 100 W rated power. It is particularly suitable for lamps with a relatively high nominal listing up to 400 W.
  • FIG. 1 shows the side view of a two-sided pinched metal halide lamp 1.
  • the formed as a barrel body discharge vessel 2 made of quartz glass includes two electrodes 3 together with a metal halide filling.
  • the piston ends are sealed by pinches 4, are embedded in the foils 5.
  • a seal is also suitable as a seal.
  • the outer power supply 6 is guided in a tubular sleeve 7 and ends in a socket 8 of an integral base part 9.
  • the base is made in one piece of steel or other heat-resistant metal and also includes a circular disk 10 as a contact element and barbs 11 as a centering and support.
  • the bulbous part of the discharge vessel is partially surrounded by an outer bulb 12 which is rolled up in the region of the transition between the pinch seal 4 and the sleeve 7 (FIG. 13).
  • the outer bulb 12 has a circumferential dent 14, so that an elastic carrier tape 15 made of metal is spread apart on the inner surface of the outer bulb.
  • the carrier tape may, if necessary, contain gettering materials such as Zr, Fe, V, Co. They are used to absorb various substances such as oxygen, hydrogen, etc.
  • the outer bulb can be filled with nitrogen, another inert gas or vacuum.
  • an outer bulb gas mixture of N 2 and / or CO 2 with Ne is used, the total pressure being between 200 and 900 mbar.
  • a Ne-Ar, Ne-Kr or Ne-Ar-Kr Penning mixture is used as the starting gas in the burner.
  • an outer bulb gas mixture N 2 / Ne or CO 2 / Ne with 300 mbar to 900 mbar total pressure is used to maintain the good ignition properties during the lifetime.
  • the Ne share is between 25 and 60%.
  • Fig. 2 shows the spectrum of a 150 W lamp with 100 h burning time according to the embodiment according to Fig. 1 whose discharge vessel contains 15 mg Hg and the metal halide filling according to Tab.
  • the filling in the outer bulb is argon.
  • the lamp uses Dy alone as a rare earth. Good results are also obtained with an addition of Tm and Ho, when Dy is used predominantly with more than 50% proportion.
  • Fig. 3 shows the change of the luminous flux LS ( FIG. 3a , Curve a) and the color temperature Tn ( FIG. 3b , Curve a) of the lamp off FIG. 1 as a function of life. Both parameters are extremely stable up to a lifetime of at least 6000 hours.
  • Tab. 1 another embodiment is shown, which relates to a 250 W and a 400 W lamp with daylight filling. In both cases, the filling is constructed similar to the 150W embodiment.
  • the corresponding curves of the luminous flux and the color temperature are in Figure 3a and 3b as curves b) for the 250 W embodiment and c) drawn for the 400 W embodiment.

Abstract

The metal halide lamp (1) has an ionizable fill comprising at least one inert gas, mercury, at least one halogen, titanium, cesium and rare earths as metals, and additionally vanadium halide.

Description

Technisches GebietTechnical area

Die Erfindung geht aus von einer Metallhalogenidlampe für eine Hochdruckentladungslampe gemäß dem Oberbegriff des Anspruchs 1. Es handelt sich dabei um Füllungen für Lampen mit tageslichtähnlicher Lichtfarbe.The invention is based on a metal halide lamp for a high-pressure discharge lamp according to the preamble of claim 1. These are fillings for lamps with daylight-like light color.

Stand der TechnikState of the art

Zur Erzielung tageslichtähnlicher Lichtfarben enthalten Metallhalogenidentladungslampen meist Thallium. Zum Beispiel beschreibt die US-A 6 107 742 eine Lampe, die eine Metallhalogenidfüllung mit den Metallen Cs, TI, und Seltene Erden wie Dy, Tm, Ho enthält und eine tageslichtähnliche Lichtfarbe hat.To achieve daylight-like light colors, metal halide discharge lamps usually contain thallium. For example, that describes US Pat. No. 6,107,742 a lamp that contains a metal halide filling with the metals Cs, TI, and rare earths such as Dy, Tm, Ho and has a daylight-like light color.

Außerdem ist aus US-A 2003/184231 eine Füllung für Metallhalogenidlampen bekannt, die V-Halogenid und Mn-Halogenid enthält. Daneben kann die Füllung Metallhalogenide unter Verwendung der Metalle Cs, Tl, und Seltene Erden wie Dy, Tm, Ho enthalten. Dabei wird Mn als Ersatz für Na verwendet. Die offenbarten Proportionen sind dabei so gewählt, dass eine Farbtemperatur von 4400 K entsprechend der Lichtfarbe NDL angestrebt wird.Besides, it is off US-A 2003/184231 a filling for metal halide lamps containing V-halide and Mn-halide known. In addition, the filling may contain metal halides using the metals Cs, Tl, and rare earths such as Dy, Tm, Ho. Mn is used as a substitute for Na. The disclosed proportions are chosen so that a color temperature of 4400 K corresponding to the light color NDL is sought.

Schließlich ist aus DE-A 35 12 757 eine Füllung für Metallhalogenidlampen bekannt, die ein Metallsilizid wie V5Si3 enthält. Daneben enthält die Füllung Seltenerd- oder Sc-Halogenid und das entsprechende Seltenerdoxihalogenid u/o Sc-Oxid. Das Silizid wirkt hier als Halogengetter.Finally is off DE-A 35 12 757 discloses a filling for metal halide lamps containing a metal silicide such as V 5 Si 3 . In addition, the filling contains rare earth or Sc halide and the corresponding rare earth oxychloride μ / o Sc oxide. The silicide acts as a halogen getter.

Aus der US-A 2004253897 ist eine Metallhalogenidlampe mit zweiendigem Außenkolben bekannt, der nur einen Teil des Entladungsgefäßes umgibt.From the US-A 2004253897 a metal halide lamp with two-ended outer bulb is known, which surrounds only a portion of the discharge vessel.

Darstellung der ErfindungPresentation of the invention

Es ist Aufgabe der vorliegenden Erfindung, eine Metallhalogenidfüllung für Metallhalogenidentladungslampen gemäß dem Oberbegriff des Anspruchs 1 bereitzustellen, die an die besonderen Bedingungen eines Außenkolbens angepasst sind.It is an object of the present invention to provide a metal halide filling for metal halide discharge lamps according to the preamble of claim 1, which are adapted to the particular conditions of an outer bulb.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen.This object is solved by the characterizing features of claim 1. Particularly advantageous embodiments can be found in the dependent claims.

Erfindungsgemäß wird eine Metallhalogenidfüllung verwendet, die Cs, TI, und Seltene Erden und zusätzlich V-Halogenid verwendet. Dabei wird auf andere Komponenten mit weiteren Halogeniden verzichtet. Als Halogen wird Jod und/oder Brom verwendet. Auf Mn wird verzichtet, weil keine Absenkung der Farbtemperatur angestrebt wird und weil ganz im Gegenteil eine eher hohe Farbtemperatur von mindestens 5000 K angestrebt wird. Bei dieser Zielsetzung wird die Farbtemperatur hauptsächlich durch die Seltenen Erden eingestellt.According to the invention, a metal halide filling is used which uses Cs, Tl, and rare earths and additionally V halide. It is dispensed with other components with other halides. The halogen used is iodine and / or bromine. On Mn is omitted because no lowering of the color temperature is sought and because on the contrary a rather high color temperature of at least 5000 K is sought. With this objective, the color temperature is set mainly by the rare earths.

Bei der Herstellung von Metallhalogenidlampen mit Entladungsgefäßen aus Quarzglas hat sich gezeigt, dass erhebliche Kosteneinsparungen durch ein neues Konzept mit Außenkolben erzielt werden können, bei dem der Außenkolben das Entladungsgefäß nur teilweise umgibt. Dabei wird eine Gasfüllung im Außenkolben verwendet. Dies führt jedoch zu einem veränderten Temperaturhaushalt des Entladungsgefäßes. Die bisher übliche Füllung aus Metallhalogeniden von Cs, TI und Seltenen Erden ist unter diesen Bedingungen zu grünstichig.In the manufacture of metal halide lamps with quartz glass discharge vessels, it has been found that significant cost savings can be achieved by a new outer bulb concept in which the outer envelope only partially surrounds the discharge vessel. In this case, a gas filling is used in the outer bulb. However, this leads to a change in the temperature of the discharge vessel. The usual filling of metal halides of Cs, TI and rare earths is too greenish under these conditions.

Abhilfe schafft hier die genau dosierte Zugabe von Vanadiumhalogenid. Dabei wird eine Füllung verwendet, die zwischen 0,1 und 2,5 mg Seltenerd-Halogenide pro ml Volumen des Entladungsgefäßes enthält. Bevorzugt ist ein Wert von 0,2 bis 2,0 mg/ml. Als Seltene Erden eignen sich insbesondere Dy, Ho und Tm allein oder in Kombination. Besonders geeignet ist Dy allein.The remedy here is precisely metered addition of vanadium halide. In this case, a filling is used which contains between 0.1 and 2.5 mg of rare earth halides per ml volume of the discharge vessel. A value of 0.2 to 2.0 mg / ml is preferred. Particularly suitable rare earths are Dy, Ho and Tm, alone or in combination. Especially suitable is Dy alone.

Das molare Verhältnis zwischen Seltenen Erden und Vanadium soll zwischen 1,5 und 30, insbesondere 2 und 20, liegen. Da beide Größen dreiwertig sind, gilt dieser Bereich auch für die zugehörigen Metallhalogenide. Bevorzugt enthält die Füllung mehr Jod als Brom. Insbesondere wird Jod allein verwendet, mit maximal 10 % Brom-Anteil, molar gesehen.The molar ratio between rare earths and vanadium should be between 1.5 and 30, in particular 2 and 20. Since both sizes are trivalent, this range also applies to the associated metal halides. Preferably, the filling contains more iodine than bromine. In particular, iodine is used alone, with a maximum of 10% bromine content, molar seen.

Bei Überschreiten der absoluten Füllmenge für Seltene Erden wird die Farbtemperatur zu niedrig. Bei Unterschreiten der absoluten Füllmenge für Seltene Erden wird die Farbtemperatur zu hoch.When the absolute filling quantity for rare earths is exceeded, the color temperature becomes too low. When falling below the absolute capacity for rare earths the color temperature becomes too high.

Bei Überschreiten des molaren Verhältnisses von SE zu V wird die γ-Komponente des Farborts zu hoch und der Farbort zu grünstichig. Bei Unterschreiten des molaren Verhältnisses von SE zu V wird der Lichtstrom zu niedrig.When the molar ratio of SE to V is exceeded, the γ component of the color locus becomes too high and the color locus too greenish. When the molar ratio of SE to V falls below the luminous flux becomes too low.

Diese Füllung eignet sich insbesondere für höherwattige Lampen mit mindestens 100 W Nennleistung. Sie eignet sich insbesondere auch für Lampen mit relativ hoher Nennlistung bis 400 W.This filling is particularly suitable for high-wattage lamps with at least 100 W rated power. It is particularly suitable for lamps with a relatively high nominal listing up to 400 W.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im folgenden soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Es zeigen:

Figur 1
eine Metallhalogenidlampe gemäß der Erfindung;
Figur 2
ein Spektrum dieser Lampe
Figur 3
die Änderung der Farbtemperatur mit der Lebensdauer dieser Lampe;
In the following the invention will be explained in more detail with reference to several embodiments. Show it:
FIG. 1
a metal halide lamp according to the invention;
FIG. 2
a spectrum of this lamp
FIG. 3
the change in color temperature with the life of that lamp;

Bevorzugte Ausführung der ErfindungPreferred embodiment of the invention

Figur 1 zeigt die seitliche Ansicht einer zweiseitig gequetschten Metallhalogenidlampe 1. Das als Tonnenkörper ausgebildete Entladungsgefäß 2 aus Quarzglas schließt zwei Elektroden 3 nebst einer Metallhalogenidfüllung ein. Die Kolbenenden sind durch Quetschungen 4 abgedichtet, in die Folien 5 eingebettet sind. Als Abdichtung eignet sich auch eine Einschmelzung. Diese sind mit äußeren Stromzuführungen 6 verbunden. Die äußere Stromzuführung 6 ist in einer rohrförmigen Hülse 7 geführt und endet in einer Buchse 8 eines integralen Sockelteils 9. Der Sockel ist einteilig aus Stahl oder anderem wärmebeständigem Metall gefertigt und umfasst außerdem eine Kreisscheibe 10 als Kontaktelement und Widerhaken 11 als Zentrierung und Halterung. Der bauchige Teil des Entladungsgefäßes ist von einem Außenkolben 12 teilweise umgeben, der im Bereich des Übergangs zwischen der Quetschung 4 und der Hülse 7 aufgerollt (13) ist. FIG. 1 shows the side view of a two-sided pinched metal halide lamp 1. The formed as a barrel body discharge vessel 2 made of quartz glass includes two electrodes 3 together with a metal halide filling. The piston ends are sealed by pinches 4, are embedded in the foils 5. A seal is also suitable as a seal. These are connected to external power supply lines 6. The outer power supply 6 is guided in a tubular sleeve 7 and ends in a socket 8 of an integral base part 9. The base is made in one piece of steel or other heat-resistant metal and also includes a circular disk 10 as a contact element and barbs 11 as a centering and support. The bulbous part of the discharge vessel is partially surrounded by an outer bulb 12 which is rolled up in the region of the transition between the pinch seal 4 and the sleeve 7 (FIG. 13).

Der Außenkolben 12 weist eine umlaufende Delle 14 auf, so dass ein elastisches Trägerband 15 aus Metall an der inneren Oberfläche des Außenkolbens eingespreizt ist. Das Trägerband kann, falls nötig, Gettermaterialen wie Zr, Fe, V, Co enthalten. Sie dienen zum Absorbieren verschiedener Stoffe wie Sauerstoff, Wasserstoff, o.ä. Der Außenkolben kann mit Stickstoff, einem anderen inerten Gas oder auch Vakuum befüllt sein.The outer bulb 12 has a circumferential dent 14, so that an elastic carrier tape 15 made of metal is spread apart on the inner surface of the outer bulb. The carrier tape may, if necessary, contain gettering materials such as Zr, Fe, V, Co. They are used to absorb various substances such as oxygen, hydrogen, etc. The outer bulb can be filled with nitrogen, another inert gas or vacuum.

In einem anderen Ausführungsbeispiel wird zur Verbesserung der Zündeigenschaften ein Außenkolbengasgemisch von N2 und/oder CO2 mit Ne verwendet, wobei der Gesamtdruck zwischen 200 und 900 mbar liegt. Als Startgas im Brenner wird in diesem Fall ein Ne-Ar-, Ne-Kr- oder Ne-Ar-Kr-Penninggemisch eingesetzt. Insbesondere wird zur Aufrechterhaltung der guten Zündeigenschaften während der Lebensdauer ein Außenkolbengasgemisch N2 / Ne oder CO2 /Ne mit 300 mbar bis 900 mbar Gesamtdruck verwendet. Der Ne-Anteil liegt dabei zwischen 25 und 60%.In another embodiment, to improve the ignition properties, an outer bulb gas mixture of N 2 and / or CO 2 with Ne is used, the total pressure being between 200 and 900 mbar. In this case, a Ne-Ar, Ne-Kr or Ne-Ar-Kr Penning mixture is used as the starting gas in the burner. In particular, an outer bulb gas mixture N 2 / Ne or CO 2 / Ne with 300 mbar to 900 mbar total pressure is used to maintain the good ignition properties during the lifetime. The Ne share is between 25 and 60%.

Fig. 2 zeigt das Spektrum einer 150 W Lampe mit 100 h Brenndauer nach dem Ausführungsbeispiel gemäß Fig. 1, deren Entladungsgefäß 15 mg Hg und die Metallhalogenidfüllung nach Tab. 1 enthält. Die Füllung im Außenkolben ist Argon. Fig. 2 shows the spectrum of a 150 W lamp with 100 h burning time according to the embodiment according to Fig. 1 whose discharge vessel contains 15 mg Hg and the metal halide filling according to Tab. The filling in the outer bulb is argon.

Die Lampe verwendet als Seltene Erde Dy allein. Gute Ergebnisse werden auch mit einer Zugabe an Tm und Ho erzielt, wenn Dy überwiegend mit mehr als 50 % Anteil verwendet wird.The lamp uses Dy alone as a rare earth. Good results are also obtained with an addition of Tm and Ho, when Dy is used predominantly with more than 50% proportion.

Fig. 3 zeigt die Änderung des Lichtstroms LS (Figur 3a, Kurve a) und der Farbtemperatur Tn (Figur 3b, Kurve a) der Lampe aus Figur 1 als Funktion der Lebensdauer. Beide Kenngrößen sind bis zu einer Lebensdauer von mindestens 6000 Std. äußerst stabil. Fig. 3 shows the change of the luminous flux LS ( FIG. 3a , Curve a) and the color temperature Tn ( FIG. 3b , Curve a) of the lamp off FIG. 1 as a function of life. Both parameters are extremely stable up to a lifetime of at least 6000 hours.

In Tab. 1 ist ein weiteres Ausführungsbeispiel gezeigt, das eine 250 W und eine 400 W-Lampe mit Tageslichtfüllung betrifft. In beiden Fällen ist die Füllung ähnlich wie die 150W Ausführungsbeispiel aufgebaut. Die entsprechenden Verläufe des Lichtstroms und der Farbtemperatur sind in Figur 3a und 3b als Kurven b) für das 250 W Ausführungsbeispiel und c) für das 400 W Ausführungsbeispiel eingezeichnet. Tab. 1 Leistung/ W 150 250 400 Lichtstrom/ Im 11000 18500 35000 Farbtemperatur/ K 5500 5500 5600 Mittlere Lebensdauer / h 9000 9000 9000 Elektrodenabstand / mm 15 27,5 30,5 Durchmesser Brennerkolben/ mm 14,8 18 24 Länge Brennerkolben /mm 22,3 32 46 Kolbenvolumen / ml 1,6 5,2 14,5 Füllgas Brenner 100h Pa Ar 100h Pa Ar 100h Pa Ar Füllgas Außenkolben 300 hPa Ar Vakuum Vakuum Füllung in mg 15 mg Hg, 0,41 mg CsJ, 1,53 mg DyJ3, 0,47 mg TIJ, 0,1 mg VJ3 14 mg Hg, 0,90 mg CsJ, 3,35 mg DyJ3, 1,0 mg TIJ, 0,2 mg VJ3 60 mg Hg, 1,8 mg CsJ, 6,7 mg DyJ3, 2,0 mg TIJ, 0,4mg VJ3 Metalle in mol% Cs 26% Dy 46% Tl 23% V 5% Cs 26% Dy 46% TI 23% V 5% Cs 26% Dy 46% TI 23% V 5% In Tab. 1, another embodiment is shown, which relates to a 250 W and a 400 W lamp with daylight filling. In both cases, the filling is constructed similar to the 150W embodiment. The corresponding curves of the luminous flux and the color temperature are in Figure 3a and 3b as curves b) for the 250 W embodiment and c) drawn for the 400 W embodiment. Tab. 1 Power / W 150 250 400 Luminous flux / Im 11000 18500 35000 Color temperature / K 5500 5500 5600 Average life / h 9000 9000 9000 Electrode distance / mm 15 27.5 30.5 Diameter burner piston / mm 14.8 18 24 Length of burner piston / mm 22.3 32 46 Piston volume / ml 1.6 5.2 14.5 Filling gas burner 100h Pa Ar 100h Pa Ar 100h Pa Ar Filling gas outer bulb 300 hPa Ar vacuum vacuum Filling in mg 15 mg Hg, 0.41 mg CsJ, 1.53 mg DyJ3, 0.47 mg TIJ, 0.1 mg VJ3 14 mg Hg, 0.90 mg CsJ, 3.35 mg DyJ3, 1.0 mg TIJ, 0.2 mg VJ3 60 mg Hg, 1.8 mg CsJ, 6.7 mg DyJ3, 2.0 mg TIJ, 0.4 mg VJ3 Metals in mol% Cs 26% Dy 46% Tl 23% V 5% Cs 26% Dy 46% TI 23% V 5% Cs 26% Dy 46% TI 23% V 5%

Claims (8)

  1. Metal halide lamp having an ionizable fill comprising at least one inert gas, mercury and metal halides, with at least one halogen, the fill containing Tl, Cs and rare earths as metalsfor halides, characterized in that the fill additionally contains V halide, the metals of the fill consisting only of Tl, Cs, V and the rare earths Dy, Ho, Tm, at least one halide from the group of the rare earths Dy, Ho, Tm being used, the fill containing between 0.1 and 2.5 mg of rare earthhalide per ml of bulb volume of the discharge vessel, the molar ratio between rare earths and vanadium being between 1.5 and 30, and the color temperature of the lamp being at least 5000 K, corresponding to a luminous color similar to daylight.
  2. Metal halide lamp according to Claim 1, characterized in that Dy is used alone or predominantly in a proportion of more than 50%.
  3. Metal halide lamp according to Claim 1, characterized in that iodine and/or bromine are used as halogens for forming halides.
  4. Metal halide lamp according to Claim 3, characterized in that iodine with at most 10 mol% of bromine is used as the halogen.
  5. Metal halide lamp according to Claim 1, characterized in that the molar ratio between rare earths and vanadium is between 2 and 20.
  6. Metal halide lamp according to Claim 1, characterized in that the lamp also comprises: an outer bulb made from hard glass or quartz glass and a discharge vessel (2) made from quartz glass and with two electrodes (11) therein, which electrodes are held in seals, the outer bulb being secured in particular at the seals.
  7. Metal halide lamp according to Claim 6, characterized in that the space between discharge vessel and outer bulb contains a gas fill.
  8. Metal halide lamp according to Claim 7, characterized in that the gas fill consists of 200 to 900 mbar N2 or noble gas or CO2 alone or in combination.
EP06006769A 2005-04-01 2006-03-30 Metal halide lamp Not-in-force EP1708244B1 (en)

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DE202005005202U DE202005005202U1 (en) 2005-04-01 2005-04-01 metal halide

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JP (1) JP5041269B2 (en)
CN (1) CN201576649U (en)
AT (1) ATE556425T1 (en)
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DE102006025947A1 (en) * 2006-06-02 2007-12-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metal halide filling for a high pressure electric discharge lamp and associated lamp
JP2012506118A (en) * 2008-10-15 2012-03-08 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 Discharge lamp containing a monoxide emitting material
JP5655006B2 (en) * 2008-12-30 2015-01-14 コーニンクレッカ フィリップス エヌ ヴェ Metal halide lamp with ceramic discharge vessel
US11037778B1 (en) * 2021-01-14 2021-06-15 Mocon, Inc. UV lamp

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JP2001043828A (en) * 1999-07-30 2001-02-16 Iwasaki Electric Co Ltd Metal halide lamp
US6731068B2 (en) * 2001-12-03 2004-05-04 General Electric Company Ceramic metal halide lamp
DE10214631A1 (en) * 2002-04-02 2003-10-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metal halide filling and associated lamp
DE10254969A1 (en) * 2002-11-26 2004-06-03 Philips Intellectual Property & Standards Gmbh High pressure discharge lamp with mercury chloride with limited chlorine content
US7245081B2 (en) * 2003-03-03 2007-07-17 Osram-Melco Toshiba Lighting Ltd. High-intensity discharge lamp with particular metal halide gas filling and lighting device
JP4400095B2 (en) * 2003-06-03 2010-01-20 ウシオ電機株式会社 Short arc super high pressure mercury lamp
DE10325554A1 (en) 2003-06-05 2004-12-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Method of manufacturing an electric lamp with an outer bulb

Also Published As

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CA2541525A1 (en) 2006-10-01
DE202005005202U1 (en) 2006-08-10
JP2006286642A (en) 2006-10-19
EP1708244A1 (en) 2006-10-04
JP5041269B2 (en) 2012-10-03
CN201576649U (en) 2010-09-08
US20060220563A1 (en) 2006-10-05
ATE556425T1 (en) 2012-05-15
US7595593B2 (en) 2009-09-29

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