EP1032021A1 - Metal halide lamp - Google Patents

Metal halide lamp Download PDF

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Publication number
EP1032021A1
EP1032021A1 EP00100688A EP00100688A EP1032021A1 EP 1032021 A1 EP1032021 A1 EP 1032021A1 EP 00100688 A EP00100688 A EP 00100688A EP 00100688 A EP00100688 A EP 00100688A EP 1032021 A1 EP1032021 A1 EP 1032021A1
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EP
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Prior art keywords
metal halide
lamp according
filling
halide lamp
discharge vessel
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EP00100688A
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German (de)
French (fr)
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EP1032021B1 (en
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Hans Dr. Eisemann
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Osram GmbH
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Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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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

Definitions

  • the invention relates to a metal halide lamp according to the preamble of Claim 1.
  • metal halide lamps a quartz glass or ceramic discharge vessel, often in an outer bulb is housed.
  • a metal halide lamp is already known from DE-A 43 27 534, which uses AlJ 3 and / or AlBr 3 together with metal halides of thallium, cesium and / or rare earth metals for high color temperatures above 5000 K as fillings for photo-optical purposes.
  • Iron is often used in metal halide lamps that are used as UV lamps used as the main source of UV radiation.
  • EP-B 543 169 known to avoid the blackening occurring with iron add other UV lamps such as manganese, bismuth, thallium or tin.
  • metal halide discharge lamps often contain sodium.
  • US-A 3 575 630 describes a filling with halides of the metals Na, Tl and Zr.
  • Metal halide discharge lamps with a glass discharge vessel and a sodium-containing filling have the disadvantage of sodium diffusion through the discharge vessel, whereby the lamp life is reduced. The sodium diffusion must be reduced with additional measures, for example the shielding of the power supply in the vicinity of the discharge vessel. This increases the manufacturing cost of the lamp.
  • the metal halide filling contains manganese in the form of Mn halide as the essential or only constituent.
  • the spectral lines of manganese in the visible spectral range are used for the first time to improve the general color rendering index R a .
  • the improved red rendering (R 9 ) is primarily due to the fact that a number of Mn lines lie in the wavelength range greater than 603 nm.
  • a particular advantage is that the UV radiation of the manganese can also be used to increase the temperature of the discharge vessel. This is done in that an envelope (often it is an additional outer bulb and / or the discharge vessel itself) is made of UV-impermeable material, for example hard glass or doped quartz glass. The UV radiation is thus absorbed in the envelope and largely returned to the discharge vessel. This increases the temperature of the cold spot, which benefits the light output.
  • an envelope often it is an additional outer bulb and / or the discharge vessel itself
  • the UV radiation is thus absorbed in the envelope and largely returned to the discharge vessel. This increases the temperature of the cold spot, which benefits the light output.
  • Typically can be with manganese as the only metal a very high color temperature of 8000 K at a high Ra of more than 90 achieve. Overall, an R a > 95 and an R 9 > 90 can be achieved.
  • Manganese with other halides of the elements Cs, Dy, Tl, Ho, Tm is advantageous as well as possibly small amounts of sodium combined.
  • Mn is used for complete or partial Substitution of Na because of essential spectral lines of the Mn in the visible spectral range are very close to the sodium D lines.
  • These fillings with several Components are ideally suited for generation in general lighting warm white or neutral white light colors with a color temperature between about 3000 and 4500 K.
  • Mn forms an essential component of the Metal halide filling, in particular its proportion is at least 20% by weight of the entire metal halide filling.
  • the amount of Mn is preferably from 0.01 to 50 ⁇ mol per cm 3 of the volume of the discharge vessel.
  • up to 30 ⁇ mol per cm 3 Cs is added to the filling.
  • one or more of the following components are added to the filling: up to 35 ⁇ mol per cm 3 Dy, or up to 15 ⁇ mol per cm 3 Tl, or up to 18 ⁇ mol per cm 3 Ho, or up to 18 ⁇ mol per cm 3 Tm. This enables the desired R a and R 9 to be fine-tuned.
  • halogens for the formation of halides are iodine and / or bromine used.
  • the volume between the discharge vessel and the outer bulb is advantageously evacuated. This enables a particularly high color rendering index R a to be achieved.
  • the volume between the discharge vessel and the outer bulb can contain a gas filling, in particular inert gas, which can increase the service life.
  • the gas filling consists of 10 to 90 kPa N 2 (cold) or 5 to 70 kPa CO 2 (cold).
  • FIG. 1 An embodiment of a metal halide lamp 1 with a power of 250 W. is shown schematically in Fig. 1. It is a two-way pinch Discharge vessel 2 from a cylindrical evacuated outer bulb 3 Tempered glass (UV-impermeable) is enclosed, which is capped on one side. The one The end of the outer bulb 3 has a rounded tip 4, whereas the other End has a screw base 5.
  • a holding frame 6 fixes the discharge vessel 2 axially inside the outer bulb 3.
  • the holding frame 6 consists in essentially of two lead wires 7, 8, of which the shorter (7) with the power supply 9 of the discharge vessel 2 near the base is connected.
  • the long Lead wire 8 is essentially a solid metal support wire that runs along of the discharge vessel 2 extends and leads to the power supply 10 remote from the base.
  • the ends 15 of the discharge vessel 2 have a heat-reflecting coating 16 provided.
  • Several getters 14 are additionally welded to the holding frame 6.
  • the volume of the discharge vessel 2 is approximately 5.2 cm 3 .
  • the distance between the two electrodes 11, 12 is 27.5 mm.
  • the discharge gas contains 56 mbar argon as the base gas.
  • the outer bulb is evacuated and therefore thermally well insulated, which results in particularly good color rendering.
  • the outer bulb can contain a gas filling to increase the service life.
  • Inert gas N 2 or CO 2
  • Mn has, among other things, an intensive group of spectral lines in the range from 601 to 603 nm, with which lamps with warm white to neutral white light color (similar to a filling containing Na) can be realized, because Na has the most intense spectral lines at a wavelength of about 589 nm.
  • the spectrum of FIG. 2 shows that Mn has numerous line groups in the visible spectral range at wavelengths greater than 603 nm which are suitable for improving the red reproduction. Further usable line groups are in the short-wave range between approximately 450 and 550 nm.
  • the luminous efficacy is relatively low at around 34 lm / W.
  • a lower color temperature of typically 4200 K down to approx. 3900 K can be achieved with a metal halide filling consisting of CsJ (14.7% by weight), DyJ 3 (30.0% by weight), TlJ (10 , 2%), HoJ 3 (9.2%), TmJ 3 (9.2%) and MnJ 2 (26.7%).
  • the metal halide filling consists of CsJ (11.5% by weight), DyJ 3 (31.2% by weight), TlJ (10.6%), HoJ 3 (9.5%), TmJ 3 (9.5%) and MnJ 2 (27.7%).

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

Abstract

A metal halide lamp has a filling of inert gas, mercury and a manganese halide as the main or only metal halide. Preferred Features: The halide is an iodide and/or bromide and the manganese content is 0.01-50 mu mol per cm<3> volume of discharge vessel.

Description

Technisches GebietTechnical field

Die Erfindung geht aus von einer Metallhalogenidlampe gemäß dem Oberbegriff des Anspruchs 1. Es handelt sich dabei insbesondere um Metallhalogenidlampen mit einem Entladungsgefäß aus Quarzglas oder Keramik, das häufig in einem Außenkolben untergebracht ist.The invention relates to a metal halide lamp according to the preamble of Claim 1. These are in particular metal halide lamps a quartz glass or ceramic discharge vessel, often in an outer bulb is housed.

Stand der TechnikState of the art

Aus der DE-A 43 27 534 ist bereits eine Metallhalogenidlampe bekannt, die als Füllung für fotooptische Zwecke AlJ3 und/oder AlBr3 zusammen mit Metallhalogeniden von Thallium, Cäsium und/oder Seltenerdmetallen für hohe Farbtemperaturen über 5000 K verwendet.A metal halide lamp is already known from DE-A 43 27 534, which uses AlJ 3 and / or AlBr 3 together with metal halides of thallium, cesium and / or rare earth metals for high color temperatures above 5000 K as fillings for photo-optical purposes.

Bei Metallhalogenidlampen, die als UV-Strahler eingesetzt werden, wird häufig Eisen als wichtigste UV-Strahlungsquelle verwendet. Hier ist es beispielsweise aus der EP-B 543 169 bekannt, zur Vermeidung der bei Eisen auftretenden Schwärzung andere UV-Strahler wie Mangan, Wismut, Thallium oder Zinn hinzuzugeben.Iron is often used in metal halide lamps that are used as UV lamps used as the main source of UV radiation. Here it is, for example EP-B 543 169 known to avoid the blackening occurring with iron add other UV lamps such as manganese, bismuth, thallium or tin.

Zur Erzielung warmweißer und neutralweißer Lichtfarben mit Farbtemperaturen unter 5000 K enthalten Metallhalogenidentladungslampen häufig Natrium. Zum Beispiel beschreibt US-A 3 575 630 eine Füllung mit Halogeniden der Metalle Na, Tl und Zr. Metallhalogenidentladungslampen mit einem Entladungsgefäß aus Glas und einer natriumhaltigen Füllung haben den Nachteil der Natriumdiffusion durch das Entladungagefäß, wodurch die Lampenlebensdauer reduziert wird. Die Natriumdiffusion muß mit zusätzlichen Maßnahmen, zum Beispiel der Abschirmung der Stromzuführung in der Nähe des Entladungsgefäßes, reduziert werden. Dies erhöht die Herstellkosten der Lampe. Ein weiterer Nachteil natriumhaltiger Metallhalogenidentladungslampen ist ihre relativ schlechte Farbwiedergabe. Typische Werte sind für den allgemeinen Farbwiedergabeindex Ra=70 und für den speziellen roten Farbwiedergabeindex R9=0.To achieve warm white and neutral white light colors with color temperatures below 5000 K, metal halide discharge lamps often contain sodium. For example, US-A 3 575 630 describes a filling with halides of the metals Na, Tl and Zr. Metal halide discharge lamps with a glass discharge vessel and a sodium-containing filling have the disadvantage of sodium diffusion through the discharge vessel, whereby the lamp life is reduced. The sodium diffusion must be reduced with additional measures, for example the shielding of the power supply in the vicinity of the discharge vessel. This increases the manufacturing cost of the lamp. Another disadvantage of sodium-containing metal halide discharge lamps is their relatively poor color rendering. Typical values for the general color rendering index R a = 70 and for the special red color rendering index R 9 = 0.

Darstellung der ErfindungPresentation of the invention

Es ist Aufgabe der vorliegenden Erfindung, eine Metallhalogenidlampe gemäß dem Oberbegriff des Anspruchs 1 bereitzustellen, die kein oder nur sehr wenig Natrium enthält und insbesondere trotzdem eine Farbtemperatur unter 5000 K (entsprechend einer warmweißen oder neutralweißen Lichfarbe) realisiert.It is an object of the present invention to provide a metal halide lamp according to the Provide preamble of claim 1 which has no or very little sodium contains and in particular nevertheless a color temperature below 5000 K (corresponding a warm white or neutral white light color).

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

Erfindungsgemäß enthält die Metallhalogenidfüllung als wesentlichen oder einzigen Bestandteil Mangan in Form von Mn-Halogenid. Anstatt der bekannten Ausnutzung der intensiven Spektrallinien im UV werden erstmals die Spektrallinien von Mangan im sichtbaren Spektralbereich zur Verbesserung des allgemeinen Farbwiedergabeindex Ra ausgenutzt. Durch den (evt. weitgehenden) Verzicht auf Natrium können dadurch die zusätzlichen Maßnahmen zur Reduzierung der Natriumdiffusion entfallen. Die verbesserte Rotwiedergabe (R9) ist vor allem darauf zurückzuführen, daß eine Reihe von Mn-Linien im Wellenlängenbereich größer 603 nm liegt.According to the invention, the metal halide filling contains manganese in the form of Mn halide as the essential or only constituent. Instead of the known utilization of the intensive spectral lines in the UV, the spectral lines of manganese in the visible spectral range are used for the first time to improve the general color rendering index R a . By (possibly largely) dispensing with sodium, the additional measures for reducing sodium diffusion can be omitted. The improved red rendering (R 9 ) is primarily due to the fact that a number of Mn lines lie in the wavelength range greater than 603 nm.

Ein besonderer Vorteil ist, daß zusätzlich die UV-Strahlung des Mangans verwendet werden kann, um die Temperatur des Entladungsgefäßes zu erhöhen. Dies geschieht dadurch, daß eine Umhüllung (oft ist es ein zusätzlicher Außenkolben, und/oder das Entladungsgefäß selbst) aus UV-undurchlässigem Material gefertigt ist, beispielsweise aus Hartglas oder dotiertem Quarzglas. Die UV-Strahlung wird somit in der Umhüllung absorbiert und zu einem großen Teil wieder in das Entladungsgefäß zurückgeführt. Damit wird die Temperatur des cold spot angehoben, was der Lichtausbeute zugute kommt. Typisch läßt sich mit Mangan als einzigem Metallhalogenid eine sehr hohe Farbtemperatur von mehr als 8000 K bei einem hohen Ra von mehr als 90 erzielen. Insgesamt ist ein Ra>95 und ein R9>90 erreichbar.A particular advantage is that the UV radiation of the manganese can also be used to increase the temperature of the discharge vessel. This is done in that an envelope (often it is an additional outer bulb and / or the discharge vessel itself) is made of UV-impermeable material, for example hard glass or doped quartz glass. The UV radiation is thus absorbed in the envelope and largely returned to the discharge vessel. This increases the temperature of the cold spot, which benefits the light output. Typically can be with manganese as the only metal a very high color temperature of 8000 K at a high Ra of more than 90 achieve. Overall, an R a > 95 and an R 9 > 90 can be achieved.

Vorteilhaft wird Mangan mit weiteren Halogeniden der Elemente Cs, Dy, Tl, Ho, Tm sowie evtl. kleinen Mengen an Natrium kombiniert. Dabei sollte das molare Verhältnis Mn/Na > 1, bevorzugt >2, sein. Hier dient Mn zur vollständigen oder teilweisen Substitution von Na, weil wesentliche Spektrallinien des Mn im sichtbaren Spektralbereich ganz in der Nähe der Natrium-D-Linien liegen. Diese Füllungen mit mehreren Komponenten eignen sich hervorragend in der Allgemeinbeleuchtung zur Erzeugung warmweißer oder neutralweißer Lichtfarben mit einer Farbtemperatur zwischen etwa 3000 und 4500 K. Mn bildet dabei eine wesentliche Komponente der Metallhalogenid-Füllung, insbesondere beträgt sein Anteil mindestens 20 Gew.-% der gesamten Metallhalogenid-Füllung.Manganese with other halides of the elements Cs, Dy, Tl, Ho, Tm is advantageous as well as possibly small amounts of sodium combined. The molar ratio Mn / Na> 1, preferably> 2. Here Mn is used for complete or partial Substitution of Na because of essential spectral lines of the Mn in the visible spectral range are very close to the sodium D lines. These fillings with several Components are ideally suited for generation in general lighting warm white or neutral white light colors with a color temperature between about 3000 and 4500 K. Mn forms an essential component of the Metal halide filling, in particular its proportion is at least 20% by weight of the entire metal halide filling.

Bevorzugt beträgt die Füllmenge an Mn 0,01 bis 50 µmol pro cm3 des Volumens des Entladungsgefäßes.The amount of Mn is preferably from 0.01 to 50 μmol per cm 3 of the volume of the discharge vessel.

In einer besonders bevorzugten Ausführungsform ist der Füllung bis zu 30 µmol pro cm3 Cs beigefügt. Alternativ oder ergänzend sind der Füllung ein oder mehrere der folgenden Komponenten (meist als Halogenid) beigefügt: bis zu 35 µmol pro cm3 Dy, bzw. bis zu 15 µmol pro cm3 Tl, bzw. bis zu 18 µmol pro cm3 Ho, bzw. bis zu 18 µmol pro cm3 Tm. Damit läßt sich eine Feinabstimmung des gewünschten Ra und R9 erzielen.In a particularly preferred embodiment, up to 30 μmol per cm 3 Cs is added to the filling. Alternatively or additionally, one or more of the following components (usually as a halide) are added to the filling: up to 35 µmol per cm 3 Dy, or up to 15 µmol per cm 3 Tl, or up to 18 µmol per cm 3 Ho, or up to 18 µmol per cm 3 Tm. This enables the desired R a and R 9 to be fine-tuned.

Als Halogene zur Bildung von Halogeniden werden bevorzugt Jod und/oder Brom verwendet.Preferred halogens for the formation of halides are iodine and / or bromine used.

Vorteilhaft ist das Volumen zwischen Entladungsgefäß und Außenkolben evakuiert. Damit läßt sich ein besonders hoher Farbwiedergabeindex Ra erzielen. Alternativ kann das Volumen zwischen Entladungsgefäß und Außenkolben eine Gasfüllung, insbesondere inertgas, enthalten, wodurch die Lebensdauer erhöht werden kann. In einer besonders bevorzugten Ausführungsform besteht die Gasfüllung aus 10 bis 90 kPa N2 (kalt) oder aus 5 bis 70 kPa CO2 (kalt).The volume between the discharge vessel and the outer bulb is advantageously evacuated. This enables a particularly high color rendering index R a to be achieved. Alternatively, the volume between the discharge vessel and the outer bulb can contain a gas filling, in particular inert gas, which can increase the service life. In a particularly preferred embodiment, the gas filling consists of 10 to 90 kPa N 2 (cold) or 5 to 70 kPa CO 2 (cold).

Figurencharacters

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

Figur 1
eine Metallhalogenidlampe in Seitenansicht;
Figur 2
das Spektrum einer Metallhalogenidlampe mit mangan-haltiger Füllung;
Figur 3
das Spektrum einer Metallhalogenidlampe mit einer Füllung aus mehreren Komponenten.
The invention will be explained in more detail below with the aid of several exemplary embodiments. Show it:
Figure 1
a metal halide lamp in side view;
Figure 2
the spectrum of a metal halide lamp with a manganese-containing filling;
Figure 3
the spectrum of a metal halide lamp with a filling of several components.

Beschreibung der ZeichnungenDescription of the drawings

Ein Ausführungsbeispiel einer Metallhalogenidlampe 1 mit einer Leistung von 250 W ist in Fig. 1 schematisch dargestellt. Es handelt sich um ein zweiseitig gequetschtes Entladungsgefäß 2, das von einem zylindrischen evakuierten Außenkolben 3 aus Hartglas (UV-undurchlässig) umschlossen ist, der einseitig gesockelt ist. Das eine Ende des Außenkolbens 3 besitzt eine abgerundete Kuppe 4, wohingegen das andere Ende einen Schraubsockel 5 aufweist. Ein Haltegestell 6 fixiert das Entladungsgefäß 2 axial im Innern des Außenkolbens 3. Das Haltegestell 6 besteht im wesentlichen aus zwei Zuleitungsdrähten 7, 8, von denen der kürzere (7) mit der sockelnahen Stromzuführung 9 des Entladungsgefäßes 2 verbunden ist. Der lange Zuleitungsdraht 8 ist im wesentlichen ein massiver Metallstützdraht, der sich entlang des Entladungegefäßes 2 erstreckt und zur sockelfernen Stromzuführung 10 führt. Die Enden 15 des Entladungsgefäßes 2 sind mit einem wärmereflektierenden Belag 16 versehen. Am Haltegestell 6 sind zusätzlich mehrere Getter 14 angeschweißt.An embodiment of a metal halide lamp 1 with a power of 250 W. is shown schematically in Fig. 1. It is a two-way pinch Discharge vessel 2 from a cylindrical evacuated outer bulb 3 Tempered glass (UV-impermeable) is enclosed, which is capped on one side. The one The end of the outer bulb 3 has a rounded tip 4, whereas the other End has a screw base 5. A holding frame 6 fixes the discharge vessel 2 axially inside the outer bulb 3. The holding frame 6 consists in essentially of two lead wires 7, 8, of which the shorter (7) with the power supply 9 of the discharge vessel 2 near the base is connected. The long Lead wire 8 is essentially a solid metal support wire that runs along of the discharge vessel 2 extends and leads to the power supply 10 remote from the base. The ends 15 of the discharge vessel 2 have a heat-reflecting coating 16 provided. Several getters 14 are additionally welded to the holding frame 6.

Das Volumen des Entladungsgefäßes 2 beträgt ca. 5,2 cm3. Der Abstand zwischen den beiden Elektroden 11, 12 beträgt 27,5 mm. Als Grundgas befinden sich im Entladungsgefäß 56 mbar Argon.The volume of the discharge vessel 2 is approximately 5.2 cm 3 . The distance between the two electrodes 11, 12 is 27.5 mm. The discharge gas contains 56 mbar argon as the base gas.

Der Außenkolben ist evakuiert und damit thermisch gut isoliert, wodurch eine besonders gute Farbwiedergabe erzielt wird. Zur Erhöhung der Lebensdauer kann der Außenkolben eine Gasfüllung enthalten. Vor allem eignet sich Inertgas (N2 oder CO2), beispielsweise mit einem Kaltfülldruck von 70 kPa N2 oder 50 kPa CO2. Dafür muß eine etwas schlechtere Farbwiedergabe in Kauf genommen werden.The outer bulb is evacuated and therefore thermally well insulated, which results in particularly good color rendering. The outer bulb can contain a gas filling to increase the service life. Inert gas (N 2 or CO 2 ) is particularly suitable, for example with a cold filling pressure of 70 kPa N 2 or 50 kPa CO 2 . For this, a somewhat poorer color rendering has to be accepted.

Fig. 2 zeigt das Spektrum einer Lampe gemäß dem ersten Ausführungsbeispiel, wobei das Entladungsvolumen 16 mg Hg und 3,4 mg MnJ2 enthält. Ausgewählte Spektrallinien von Mn und Hg sind markiert. Nach Fig. 2 besitzt Mn u.a. eine intensive Gruppe von Spektrallinien im Bereich von 601 bis 603 nm, womit Lampen mit warmweißer bis neutralweißer Lichtfarbe (ähnlich wie bei einer Na-haltigen Füllung) realisierbar sind, denn Na hat die intensivsten Spektrallinien bei einer Wellenlänge von etwa 589 nm. Außerdem zeigt das Spektrum der Fig. 2, daß Mn im sichtbaren Spektralbereich bei Wellenlängen größer 603 nm zahlreiche Liniengruppen besitzt, die dazu geeignet sind, die Rotwiedergabe zu verbessern. Weitere nutzbare Liniengruppen liegen im kurzwelligen Bereich zwischen etwa 450 und 550 nm.2 shows the spectrum of a lamp according to the first exemplary embodiment, the discharge volume containing 16 mg Hg and 3.4 mg MnJ 2 . Selected spectral lines of Mn and Hg are marked. According to FIG. 2, Mn has, among other things, an intensive group of spectral lines in the range from 601 to 603 nm, with which lamps with warm white to neutral white light color (similar to a filling containing Na) can be realized, because Na has the most intense spectral lines at a wavelength of about 589 nm. In addition, the spectrum of FIG. 2 shows that Mn has numerous line groups in the visible spectral range at wavelengths greater than 603 nm which are suitable for improving the red reproduction. Further usable line groups are in the short-wave range between approximately 450 and 550 nm.

Bei diesem Ausführungsbeispiel wird eine Farbtemperatur von mindestens 8000 K und ein allgemeiner Farbwiedergabeindex Ra = 91 erreicht. Allerdings ist die Lichtausbeute mit rund 34 lm/W relativ gering.In this exemplary embodiment, a color temperature of at least 8000 K and a general color rendering index R a = 91 is achieved. However, the luminous efficacy is relatively low at around 34 lm / W.

Bei einem zweiten Ausführungsbeispiel wurde als Füllung 14 mg Hg und insgesamt 10.4 mg Metallhalogenide für das gleiche Entladungsvolumen gewählt. Im einzelnen sind darin enthalten: 18 Gew.-% CsJ, 36,8 Gew.-% DyJ3, 12,5 Gew.-% TlJ sowie 32,7 Gew.-% MnJ2. Das Spektrum dieser Lampe ist in Fig. 3 gezeigt.In a second exemplary embodiment, 14 mg of mercury and a total of 10.4 mg of metal halides were chosen as the filling for the same discharge volume. Specifically, it contains: 18% by weight CsJ, 36.8% by weight DyJ 3 , 12.5% by weight TlJ and 32.7% by weight MnJ 2 . The spectrum of this lamp is shown in Fig. 3.

Diese Lampe erzielt eine Farbtemperatur von 4400 K. Sie besitzt einen allgemeinen Farbwiedergabeindex Ra = 96, einen speziellen roten Farbwiedergabeindex R9 = 92 und eine Lichtausbeute von rund 60 lm/W. Damit hat diese Lampe eine deutlich bessere Farbwiedergabe als natriumhaltige Metallhalogenidfüllungen.This lamp achieves a color temperature of 4400 K. It has a general color rendering index R a = 96, a special red color rendering index R 9 = 92 and a luminous efficacy of around 60 lm / W. This lamp has a significantly better color rendering than sodium-containing metal halide fillings.

Eine niedrigere Farbtemperatur von typisch 4200 K bis hinab zu ca. 3900 K läßt sich mit einer Metallhalogenid-Füllung, bestehend aus CsJ (14,7 Gew.-%), DyJ3 (30,0 Gew.-%), TlJ (10,2 %), HoJ3 (9,2 %), TmJ3 (9,2 %) und MnJ2 (26,7 %) erzielen. In einem weiteren Ausführungsbeispiel besteht die Metallhalogenid-Füllung aus CsJ (11,5 Gew.-%), DyJ3 (31,2 Gew.-%), TlJ (10,6 %), HoJ3 (9,5 %), TmJ3 (9,5 %) und MnJ2 (27,7 %).A lower color temperature of typically 4200 K down to approx. 3900 K can be achieved with a metal halide filling consisting of CsJ (14.7% by weight), DyJ 3 (30.0% by weight), TlJ (10 , 2%), HoJ 3 (9.2%), TmJ 3 (9.2%) and MnJ 2 (26.7%). In a further exemplary embodiment, the metal halide filling consists of CsJ (11.5% by weight), DyJ 3 (31.2% by weight), TlJ (10.6%), HoJ 3 (9.5%), TmJ 3 (9.5%) and MnJ 2 (27.7%).

Claims (16)

Metallhalogenidlampe zur Anwendung im sichtbaren Spektralbereich mit einem Farbwiedergabeindex von Ra>80, wobei das Entladungsgefäß (2) zwei Elektroden (11,12) und eine ionisierbare Füllung aus Inertgas, Quecksilber und mindestens einem Metallhalogenid enthält, dadurch gekennzeichnet, daß als ein wesentliches oder einziges Metallhalogenid ein Halogenid des Mn verwendet wird.Metal halide lamp for use in the visible spectral range with a Color rendering index of Ra> 80, the discharge vessel (2) having two electrodes (11,12) and an ionizable filling of inert gas, mercury and at least contains a metal halide, characterized in that as an essential or the only metal halide used is a halide of Mn. Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß zum Erzielen einer Farbtemperatur von unter 5000 K außerdem mindestens ein Halogenid aus der Gruppe der Metalle Cs, Dy, Tl, Ho, Tm, und evtl. Na in kleinen Mengen, vorhanden ist.Metal halide lamp according to claim 1, characterized in that to achieve a color temperature of less than 5000 K also at least one halide from the group of the metals Cs, Dy, Tl, Ho, Tm, and possibly Na in small quantities, is available. Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Füllmenge an Mn 0,01 bis 50 µmol pro cm3 des Volumens des Entladungsgefäßes beträgt.Metal halide lamp according to claim 1, characterized in that the filling amount of Mn is 0.01 to 50 µmol per cm 3 of the volume of the discharge vessel. Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 30 µmol Cs pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.Metal halide lamp according to Claim 2, characterized in that 0 to 30 µmol Cs per cm 3 of the volume of the discharge vessel is added to the filling. Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 35 µmol Dy pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.Metal halide lamp according to Claim 2, characterized in that 0 to 35 µmol Dy per cm 3 of the volume of the discharge vessel is added to the filling. Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 15 µmol Tl pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.Metal halide lamp according to Claim 2, characterized in that 0 to 15 µmol Tl per cm 3 of the volume of the discharge vessel is added to the filling. Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 18 µmol Ho pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.Metal halide lamp according to Claim 2, characterized in that 0 to 18 µmol Ho per cm 3 of the volume of the discharge vessel is added to the filling. Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 18 µmol Tm pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.Metal halide lamp according to Claim 2, characterized in that 0 to 18 µmol Tm per cm 3 of the volume of the discharge vessel is added to the filling. Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß als Habgene zur Bildung von Halogeniden Jod und/oder Brom verwendet sind.Metal halide lamp according to claim 1, characterized in that as habgenes iodine and / or bromine are used to form halides. Metallhabogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Füllung von einer UV-undurchlässigen Umhüllung (3), insbesondere einem Außenkolben, umgeben ist. Metallhabogenide lamp according to claim 1, characterized in that the filling a UV-impermeable covering (3), in particular an outer bulb, is surrounded. Metallhalogenidlampe nach Anspruch 10, dadurch gekennzeichnet, daß das Volumen zwischen Entladungsgefäß (2) und Außenkolben (3) evakuiert ist.Metal halide lamp according to claim 10, characterized in that the volume is evacuated between the discharge vessel (2) and the outer bulb (3). Metallhalogenidlampe nach Anspruch 10, dadurch gekennzeichnet, daß das Volumen zwischen Entladungsgefäß (2) und Außenkolben (3) eine Gasfüllung, insbesondere Inertgas, enthält.Metal halide lamp according to claim 10, characterized in that the volume a gas filling, in particular, between the discharge vessel (2) and the outer bulb (3) Contains inert gas. Metallhalogenidlampe nach Anspruch 12, dadurch gekennzeichnet, daß die Gasfüllung aus 10 bis 90 kPa N2 (kalt) besteht.Metal halide lamp according to claim 12, characterized in that the gas filling consists of 10 to 90 kPa N 2 (cold). Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Gasfüllung aus 5 bis 70 kPa CO2 (kalt) besteht.Metal halide lamp according to claim 1, characterized in that the gas filling consists of 5 to 70 kPa CO 2 (cold). Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Anteil des Mn-Halogenids an der gesamten Metallhalogenid-Füllung mindestens 20 Gew.-% beträgt.Metal halide lamp according to claim 2, characterized in that the portion of the Mn halide on the entire metal halide filling at least 20 % By weight. Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß zum Erzielen einer Farbtemperatur von über 8000 K als einziges Metallhalogenid ein Halogenid des Mn verwendet wird.Metal halide lamp according to claim 1, characterized in that to achieve a color temperature of over 8000 K is the only metal halide a halide of the Mn is used.
EP00100688A 1999-02-22 2000-01-14 Metal halide lamp Expired - Lifetime EP1032021B1 (en)

Applications Claiming Priority (2)

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DE19907301A DE19907301A1 (en) 1999-02-22 1999-02-22 Metal halide lamp
DE19907301 1999-02-22

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EP1032021A1 true EP1032021A1 (en) 2000-08-30
EP1032021B1 EP1032021B1 (en) 2004-08-04

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US (1) US6400084B1 (en)
EP (1) EP1032021B1 (en)
JP (1) JP4499234B2 (en)
AT (1) ATE272894T1 (en)
CA (1) CA2298269A1 (en)
DE (2) DE19907301A1 (en)
HU (1) HU222455B1 (en)

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EP2128888A3 (en) * 2008-03-11 2010-06-30 Blv Licht- Und Vakuumtechnik Gmbh Mercury-free metal halide high pressure discharge lamp

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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
ES2313295T3 (en) * 2004-03-08 2009-03-01 Koninklijke Philips Electronics N.V. LLAMPARA DE HALOGENUROS METALICOS.
JP2009524903A (en) * 2006-01-25 2009-07-02 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 TLD low pressure gas discharge lamp
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

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GB2059146A (en) * 1979-09-12 1981-04-15 Narva Veb Electric discharge lamp
JPH01128345A (en) * 1987-11-12 1989-05-22 Toshiba Corp Metal halide lamp
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HUP0000753A3 (en) 2002-11-28
US6400084B1 (en) 2002-06-04
CA2298269A1 (en) 2000-08-22
DE19907301A1 (en) 2000-08-24
HU222455B1 (en) 2003-07-28
EP1032021B1 (en) 2004-08-04
DE50007238D1 (en) 2004-09-09
HU0000753D0 (en) 2000-04-28
ATE272894T1 (en) 2004-08-15
HUP0000753A2 (en) 2000-09-28
JP4499234B2 (en) 2010-07-07
JP2000243350A (en) 2000-09-08

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