EP0925602A2 - Long-lasting metal halide discharge lamp - Google Patents
Long-lasting metal halide discharge lampInfo
- Publication number
- EP0925602A2 EP0925602A2 EP98931952A EP98931952A EP0925602A2 EP 0925602 A2 EP0925602 A2 EP 0925602A2 EP 98931952 A EP98931952 A EP 98931952A EP 98931952 A EP98931952 A EP 98931952A EP 0925602 A2 EP0925602 A2 EP 0925602A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- filling
- lamp according
- μmol
- metal halide
- 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.)
- Granted
Links
Classifications
-
- 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 discharge lamp according to the preamble of claim 1. It relates in particular to a metal halide discharge lamp for the field of application of effect light illumination, i.e. with color temperatures above the so-called "daylight" temperature of 4200 K and with medium arc lengths.
- Such lamps are preferably used for luminaires for architectural and effect lighting, in particular for accent lighting of limited areas that emphasize and enhance the ambient lighting, e.g. in houses and apartments, in galleries or at events.
- the optical properties of the light in particular the localization of the light generation, the luminous flux related to the lamp output and the color temperature are subject to requirements that have to be classified between general lighting and special requirements, such as for projection. are.
- the invention is based on the technical problem of increasing the service life of a metal halide discharge lamp according to the preamble of claim 1.
- the invention assumes that devitrification, that is to say increasing crystallization of the bulb of a metal halide discharge lamp, essentially determines its lifespan.
- the invention therefore provides for a filling without a rare earth element, because the rare earth elements have proven to be an essential cause for the devitrification phenomenon with increasing operating age of the lamp.
- this effect can be used to reduce the wall load.
- the bulb can either be enlarged for a given electrical power consumption of the lamp or, conversely, the power consumption can be reduced for a given bulb size. This was in a conventional way until- not possible without having to put up with the blackening problems then occurring.
- the lower wall load also reduces the tendency to devitrification and thus improves the devitrification and thus the life of the lamp, in addition to the direct effect of not using rare earth elements.
- the described effects of the invention can be realized with a filling which, in addition to the conventional constituents, ignition gas, mercury and halogen, contains the constituents lithium, indium, thallium and tin.
- Lithium provides the red component, indium the blue component and thallium the green component in the radiation from the lamp. All three elements emit essentially spectral lines, so that tin is used according to the invention in order to achieve a good continuum between the lines, in particular at low power and wall loads.
- the entirety of the characterizing features of claim 1 thus results in a metal halide discharge lamp with the desired spectral composition of the emitted light and, moreover, a considerably improved service life.
- Lamps with a coloring temperature of more than 4800 K, better more than 5000 K are preferred.
- the arc length corresponding to the lamp power is in the middle range; in particular, the specific power based on the arc length can be between 40 and 80 W / mm, depending on the embodiment.
- a preferred range for the reduced wall load which is possible on the basis of the invention, as explained above, is between 30 and 60 W / cm 2 .
- the lamp filling contains no sodium. It is particularly preferred that, apart from those mentioned, no other Other components are present in the filling, apart from the usual traces.
- Preferred halogens are the conventionally known elements iodine and bromine, i.e. the metals mentioned lithium, indium, thallium and tin are added to the lamp as iodides and / or as bromides. Conventionally, part of the mercury is also added as iodide or bromide to avoid excessive lamp blackening. According to the invention, there is the additional advantage that this measure is unnecessary in the claimed lamp filling.
- the elemental mercury and the halogen with respect to the halides of the elements lithium, indium, thallium, tin can be added stoichiometrically or only in the form of the halides of these four elements. This results in the advantage for production that at least one component is less, namely the mercury iodide, bromide or generally halide.
- Lithium 0.15-3.0 ⁇ mol / ml, in particular 0.15-1.5 ⁇ mol / ml
- the invention finds a meaningful area of application in the power range from 200 to 2500 W per lamp, but can also be used outside of this area. before being applied. As already explained at the beginning, it is particularly suitable for the effect light market, in which the demands on the color locus and the luminance are somewhat lower than in special applications such as in the film or projection sector. In contrast, the significantly improved lifespan is particularly noticeable in the effect light area as an economically significant advantage.
- lamps are often equipped with an additional outer bulb. Special gas fillings can also be used between the outer and inner pistons instead of a vacuum.
- the invention is equally suitable for lamps with or without an outer bulb.
- the outer bulb can e.g. can also be advantageous as protection against contact, for example if an inner bulb provided with two opposite sides is to be used in a lamp to be connected on only one side. Then one of the two connections of the inner bulb must be guided along the outer wall of the inner bulb to the other side, an outer bulb being attached as a protection against contact. Finally, the improved explosion protection can also be a reason for choosing a lamp with an outer bulb.
- a 300 W lamp has an average arc length of 5 mm. It is designed for operation without an outer bulb and has a piston volume of 1.1 ml. If an outer bulb were used, increasing the wall temperature would slightly lower the color temperature. To compensate for this, the wall load would be reduced (ie the lamp output reduced or the inner bulb is enlarged) and / or the proportion of lithium iodide is reduced in order to obtain the desired color temperature value. In the present example, this is 5500 K.
- a luminous flux of 21 klm was achieved with this lamp.
- the lifespan is over 2000 hours.
- Another 300 W lamp has an average arc length of 5 mm. It is designed for operation without an outer bulb and has a piston volume of 1.5 ml. The color temperature is 6100 K.
- a luminous flux of 22.5 klm was achieved with this lamp.
- the service life is also over 2000 hours.
- the spatial-physical design is conventional and corresponds, for example, to the form explained in the European patent application with the application number 91 120 910.4 and the publication number 0 492 205 A2. The corresponding disclosure is hereby incorporated by reference.
Landscapes
- Discharge Lamp (AREA)
Abstract
The invention relates to an improved lamp filling for extending the life of a metal halide discharge lamp. The inventive lamp is particularly suitable for effect lighting.
Description
Metallhalogenid-Entladungslampe mit langer LebensdauerLong life metal halide discharge lamp
Technisches GebietTechnical field
Die Erfindung betrifft eine Metallhalogenid-Entladungslampe nach dem Oberbegriff des Anspruchs 1. Sie betrifft insbesondere eine Metallhalogenid- Entladungslampe für den Einsatzbereich der Effektlichtbeleuchtung, d.h. mit Farbtemperaturen oberhalb der sog. „Daylight" -Temperatur von 4200 K und mit mittleren Bogenlängen.The invention relates to a metal halide discharge lamp according to the preamble of claim 1. It relates in particular to a metal halide discharge lamp for the field of application of effect light illumination, i.e. with color temperatures above the so-called "daylight" temperature of 4200 K and with medium arc lengths.
Solche Lampen werden vorzugsweise eingesetzt für Leuchten zur Architektur- und Effektbeleuchtung, also insbesondere zur gegenüber der Umgebungsbeleuchtung herausstellenden und verstärkten Akzentbeleuchtung begrenzter Bereiche, z.B. in Haus und Wohnung, in Galerien oder auch bei Veranstaltungen. In diesem Bereich werden an die optischen Eigenschaften des Lichts, insbesondere an die Lokalisierung der Lichterzeugung, an den auf die Lampenleistung bezogenen Lichtstrom und an die Farbtemperatur Anforderungen gestellt, die zwischen dem Bereich der Allgemeinbeleuchtung und speziellen Anforderungen, wie etwa bei der Projektion, einzuord- nen sind.Such lamps are preferably used for luminaires for architectural and effect lighting, in particular for accent lighting of limited areas that emphasize and enhance the ambient lighting, e.g. in houses and apartments, in galleries or at events. In this area, the optical properties of the light, in particular the localization of the light generation, the luminous flux related to the lamp output and the color temperature are subject to requirements that have to be classified between general lighting and special requirements, such as for projection. are.
Trotz der gegenüber dem allgemeinen Beleuchtungsbereich etwas erhöhten Ansprüche an die genannten technischen Merkmale solcher Lampen wird auch im Effektlichtbereich großer Wert auf eine möglichst lange Lebensdauer gelegt, um einerseits die Kosten für die Ersatzlampen und den mit dem
Austausch verbundenen Arbeitsaufwand zu erniedrigen und andererseits Zuverlässigkeit und Wartungsfreiheit zu erhöhen.Despite the somewhat higher demands on the technical characteristics of such lamps compared to the general lighting area, great importance is also attached to the longest possible service life in the effect light area, in order to reduce the costs of the replacement lamps and the costs associated with them Reduce exchange-related workload and on the other hand increase reliability and freedom from maintenance.
Weiterhin muß dabei auch auf eine gute Farbwiedergabe und die richtige Farbtemperatur geachtet werden.Furthermore, good color rendering and the correct color temperature must also be ensured.
Darstellung der ErfindungPresentation of the invention
Der Erfindung liegt das technische Problem zugrunde, bei einer Metallhalo- genid-Entladungslampe nach dem Oberbegriff des Anspruchs 1 die Lebensdauer zu erhöhen.The invention is based on the technical problem of increasing the service life of a metal halide discharge lamp according to the preamble of claim 1.
Dieses Problem wird gelöst durch die kennzeichnenden Merkmale in Anspruch 1. Bevorzugte Ausführungsformen der Erfindung sind in den ab- hängigen Ansprüchen angegeben.This problem is solved by the characterizing features in claim 1. Preferred embodiments of the invention are specified in the dependent claims.
Zunächst geht die Erfindung davon aus, daß die Entglasung, also zunehmende Kristallisierung des Kolbens einer Metallhalogenid-Entladungslampe wesentlich deren Lebensdauer bestimmt. Daher sieht die Erfindung eine Füllung ohne Seltenerdelement vor, weil sich die Seltenerdelemente als we- sentliche Ursache für das Entglasungsphänomen bei zunehmendem Betriebsalter der Lampe herausgestellt haben.First of all, the invention assumes that devitrification, that is to say increasing crystallization of the bulb of a metal halide discharge lamp, essentially determines its lifespan. The invention therefore provides for a filling without a rare earth element, because the rare earth elements have proven to be an essential cause for the devitrification phenomenon with increasing operating age of the lamp.
Mit dem erfindungsgemäßen Verzicht auf ein Seltenerdelement hat sich als zusätzliche vorteilhafte Wirkung - neben der Verlängerung der Lebensdauer durch geringere Entglasung - auch eine verringerte Neigung der Lampe zur Schwärzung an der Kolbeninnenwand ergeben. Der beschriebenen zugrundeliegenden Problemstellung entsprechend kann dieser Effekt zu einer Verminderung der Wandbelastung genutzt werden. Zu diesem Zweck kann entweder bei vorgegebener elektrischer Leistungsaufnahme der Lampe der Kolben vergrößert oder umgekehrt bei vorgegebener Kolbengröße die Lei- stungsaufnahme verringert werden. Dies war in konventioneller Weise bis-
her nicht möglich, ohne die dann auftretenden Schwärzungsprobleme in Kauf nehmen zu müssen. Die niedrigere Wandbelastung verringert zusätzlich die Entglasungsneigung und verbessert damit über die bereits geschilderte direkte Wirkung des Verzichts auf Seltenerdelemente hinaus die Ent- glasung und damit die Lebensdauer der Lampe.By dispensing with a rare earth element according to the invention, as an additional advantageous effect - in addition to extending the service life due to lower devitrification - there was also a reduced tendency of the lamp to blacken on the inner wall of the bulb. According to the underlying problem described, this effect can be used to reduce the wall load. For this purpose, the bulb can either be enlarged for a given electrical power consumption of the lamp or, conversely, the power consumption can be reduced for a given bulb size. This was in a conventional way until- not possible without having to put up with the blackening problems then occurring. The lower wall load also reduces the tendency to devitrification and thus improves the devitrification and thus the life of the lamp, in addition to the direct effect of not using rare earth elements.
Die beschriebenen Wirkungen der Erfindung lassen sich realisieren mit einer Füllung, die neben den konventionellen Bestandteilen Zündgas, Quecksilber und Halogen, die Bestandteile Lithium, Indium, Thallium und Zinn enthält. Dabei sorgt Lithium für den Rotanteil, Indium für den Blauanteil und Thal- lium für den Grünanteil in der Strahlung der Lampe. Alle drei Elemente strahlen im wesentlichen spektrale Linien ab, so daß erfindungsgemäß Zinn eingesetzt wird, um insbesondere bei niedriger Leistung und Wandbelastung ein gutes Kontinuum zwischen den Linien zu realisieren. Durch die Gesamtheit der kennzeichnenden Merkmale des Anspruchs 1 ergibt sich somit eine Metallhalogenid-Entladungslampe mit der gewünschten spektralen Zusammensetzung des abgestrahlten Lichts und darüber hinaus ganz erheblich verbesserter Lebensdauer.The described effects of the invention can be realized with a filling which, in addition to the conventional constituents, ignition gas, mercury and halogen, contains the constituents lithium, indium, thallium and tin. Lithium provides the red component, indium the blue component and thallium the green component in the radiation from the lamp. All three elements emit essentially spectral lines, so that tin is used according to the invention in order to achieve a good continuum between the lines, in particular at low power and wall loads. The entirety of the characterizing features of claim 1 thus results in a metal halide discharge lamp with the desired spectral composition of the emitted light and, moreover, a considerably improved service life.
Bevorzugt sind Lampen mit einer Färb temper atur von über 4800 K, besser über 5000 K. Wie bereits erläutert, liegt die Bogenlänge der jeweiligen Lam- penleistung entsprechend im mittleren Bereich; insbesondere kann die auf die Bogenlänge bezogene spezifische Leistung dabei je nach Ausführungsform zwischen 40 und 80 W/mm liegen. Ein bevorzugter Bereich für die, wie oben erläutert, aufgrund der Erfindung mögliche reduzierte Wandbelastung liegt zwischen 30 und 60 W/cm2.Lamps with a coloring temperature of more than 4800 K, better more than 5000 K are preferred. As already explained, the arc length corresponding to the lamp power is in the middle range; in particular, the specific power based on the arc length can be between 40 and 80 W / mm, depending on the embodiment. A preferred range for the reduced wall load which is possible on the basis of the invention, as explained above, is between 30 and 60 W / cm 2 .
Um die Farbtemperatur hoch auslegen zu können, kann erfindungsgemäß weiterhin vorgesehen sein, daß die Lampenfüllung kein Natrium enthält. Bevorzugt ist insbesondere, daß außer den genannten überhaupt keine wei-
teren Bestandteile in der Füllung vorhanden sind, von den üblichen Spuren abgesehen.In order to be able to design the color temperature high, it can further be provided according to the invention that the lamp filling contains no sodium. It is particularly preferred that, apart from those mentioned, no other Other components are present in the filling, apart from the usual traces.
Bevorzugte Halogene sind die konventionell bekannten Elemente Jod und Brom, d.h. die genannten Metalle Lithium, Indium, Thallium und Zinn wer- den der Lampe als Jodide und/oder als Bromide zugesetzt. Konventionellerweise wird ferner ein Teil des Quecksilbers als Jodid oder Bromid zugesetzt, um eine übermäßige Lampenschwärzung zu vermeiden. Erfindungsgemäß ergibt sich somit der zusätzliche Vorteil, daß diese Maßnahme bei der beanspruchten Lampenfüllung unnötig ist. Es kann also das Quecksilber elementar und das Halogen in bezug auf die Halogenide der Elemente Lithium, Indium, Thallium, Zinn bezogen stöchiometrisch bzw. nur in Form der Halogenide dieser vier Elemente zugesetzt werden. Damit ergibt sich für die Produktion der Vorteil, daß zumindest eine Komponente weniger anfällt, nämlich das Quecksilberjodid, -bromid bzw. allgemein -halogenid.Preferred halogens are the conventionally known elements iodine and bromine, i.e. the metals mentioned lithium, indium, thallium and tin are added to the lamp as iodides and / or as bromides. Conventionally, part of the mercury is also added as iodide or bromide to avoid excessive lamp blackening. According to the invention, there is the additional advantage that this measure is unnecessary in the claimed lamp filling. The elemental mercury and the halogen with respect to the halides of the elements lithium, indium, thallium, tin can be added stoichiometrically or only in the form of the halides of these four elements. This results in the advantage for production that at least one component is less, namely the mercury iodide, bromide or generally halide.
Als bevorzugte Konzentrationsbereiche für die vier Elemente aus dem kennzeichnenden Teil des Anspruchs 1 haben sich folgende als vorteilhaft bewährt:The following have proven to be advantageous as preferred concentration ranges for the four elements from the characterizing part of claim 1:
- Lithium: 0,15 - 3,0 μmol/ml, insbesondere 0,15 - 1,5 μmol/mlLithium: 0.15-3.0 μmol / ml, in particular 0.15-1.5 μmol / ml
- Indium: 0,2 - 2,0 μmol/ml- Indium: 0.2 - 2.0 µmol / ml
- Thallium: 0,05 - 0,5 μmol/mlThallium: 0.05-0.5 μmol / ml
- Zinn: 0,5 - 5,0 μmol/ml.- Tin: 0.5 - 5.0 μmol / ml.
Die genannten Konzentrationsbereiche sind nicht nur in der Gesamtkombination, sondern auch jeweils einzeln und unabhängig voneinander sowie in Unterkombinationen von Vorteil.The concentration ranges mentioned are advantageous not only in the overall combination, but also individually and independently of one another and in sub-combinations.
Einen sinnvollen Anwendungsbereich findet die Erfindung im Leistungsbereich von 200 bis 2500 W pro Lampe, kann aber auch außerhalb dieser Berei-
ehe angewendet werden. Sie eignet sich dabei, wie eingangs bereits erklärt, insbesondere für den Effektlichtmarkt, in dem etwas geringere Anforderungen an den Farbort und die Leuchtdichte als bei speziellen Anwendungen wie im Filmbereich oder Projektionsbereich gestellt werden. Demgegenüber macht sich aber gerade im Effektlichtbereich die deutlich verbesserte Lebensdauer als ökonomisch wesentlicher Vorteil bemerkbar.The invention finds a meaningful area of application in the power range from 200 to 2500 W per lamp, but can also be used outside of this area. before being applied. As already explained at the beginning, it is particularly suitable for the effect light market, in which the demands on the color locus and the luminance are somewhat lower than in special applications such as in the film or projection sector. In contrast, the significantly improved lifespan is particularly noticeable in the effect light area as an economically significant advantage.
Kommerziell erhältliche Lampen sind häufig mit einem zusätzlichen Außenkolben ausgestattet. Dabei können zwischen dem Außen- und dem Innenkolben statt eines Vakuums auch spezielle Gasfüllungen zur Anwen- düng kommen. Die Erfindung ist in gleicher Weise für Lampen mit oder ohne Außenkolben geeignet.Commercially available lamps are often equipped with an additional outer bulb. Special gas fillings can also be used between the outer and inner pistons instead of a vacuum. The invention is equally suitable for lamps with or without an outer bulb.
Der Außenkolben kann z.B. auch als Berührungsschutz vorteilhaft sein, etwa wenn ein an sich mit zwei an entgegengesetzten zwei Seiten versehener Innenkolben in einer nur einseitig anzuschließenden Lampe verwendet wer- den soll. Dann muß einer der beiden Anschlüsse des Innenkolbens an der Außenwand des Innenkolbens entlang auf die andere Seite geführt werden, wobei ein Außenkolben als Berührungsschutz angebracht ist. Schließlich kann auch der verbesserte Explosionsschutz ein Grund für die Wahl einer Lampe mit Außenkolben sein.The outer bulb can e.g. can also be advantageous as protection against contact, for example if an inner bulb provided with two opposite sides is to be used in a lamp to be connected on only one side. Then one of the two connections of the inner bulb must be guided along the outer wall of the inner bulb to the other side, an outer bulb being attached as a protection against contact. Finally, the improved explosion protection can also be a reason for choosing a lamp with an outer bulb.
AusführungsbeispielEmbodiment
Ein erstes konkretes Ausführungsbeispiel ist wie folgt ausgelegt:A first concrete exemplary embodiment is designed as follows:
Eine 300 W Lampe hat eine mittlere Bogenlänge von 5 mm. Sie ist für den Betrieb ohne Außenkolben ausgelegt und hat dabei ein Kolbenvolumen von 1,1 ml. Bei Verwendung eines Außenkolbens würde durch die Erhöhung der Wandtemperatur die Farbtemperatur etwas erniedrigt. Zum Ausgleich wür- de die Wandbelastung verringert (also die Lampenleistung verringert oder
der Innenkolben vergrößert) und/oder der Lithiumjodidanteil verringert, um den angestrebten Farbtemperaturwert zu erhalten. Dieser beträgt im vorliegenden Beispiel 5500 K.A 300 W lamp has an average arc length of 5 mm. It is designed for operation without an outer bulb and has a piston volume of 1.1 ml. If an outer bulb were used, increasing the wall temperature would slightly lower the color temperature. To compensate for this, the wall load would be reduced (ie the lamp output reduced or the inner bulb is enlarged) and / or the proportion of lithium iodide is reduced in order to obtain the desired color temperature value. In the present example, this is 5500 K.
Bei einem Zündgasdruck von 300 mbar Argon werden 45 mg Hg verwendet. Die übrigen Anteile sind 0,4 mg LiJ (entspricht 2,72 μmol Li/ml), 0,32 mg InJ (entspricht 1,2 μmol In/ml), 0,14 mg T1J (entspricht 0,384 μmol Tl/ml) sowie 0,85 mg SnBr2 (entspricht 2,775 μmol Sn/ml).At an ignition gas pressure of 300 mbar argon, 45 mg Hg are used. The remaining portions are 0.4 mg LiJ (corresponds to 2.72 μmol Li / ml), 0.32 mg InJ (corresponds to 1.2 μmol In / ml), 0.14 mg T1J (corresponds to 0.384 μmol Tl / ml) and 0.85 mg SnBr 2 (corresponds to 2.775 μmol Sn / ml).
Mit dieser Lampe wurde ein Lichtstrom von 21 klm erzielt. Die Lebensdauer liegt über 2000 Stunden.A luminous flux of 21 klm was achieved with this lamp. The lifespan is over 2000 hours.
Ein weiteres konkretes Ausführungsbeispiel ist wie folgt ausgelegt:Another specific exemplary embodiment is designed as follows:
Eine weitere 300 W Lampe hat eine mittlere Bogenlänge von 5 mm. Sie ist für den Betrieb ohne Außenkolben ausgelegt und hat dabei ein Kolbenvolumen von 1,5 ml. Die Farbtemperatur beträgt 6100 K.Another 300 W lamp has an average arc length of 5 mm. It is designed for operation without an outer bulb and has a piston volume of 1.5 ml. The color temperature is 6100 K.
Bei einem Zündgasdruck von 300 mbar Argon werden 45 mg Hg verwendet. Die übrigen Anteile sind 0,04 mg LiJ (entspricht 0,2 μmol Li/ml), 0,63 mg InJ, 0,12 mg T1J sowie 0,67 mg SnBr2 .At an ignition gas pressure of 300 mbar argon, 45 mg Hg are used. The remaining portions are 0.04 mg LiJ (corresponds to 0.2 μmol Li / ml), 0.63 mg InJ, 0.12 mg T1J and 0.67 mg SnBr 2 .
Mit dieser Lampe wurde ein Lichtstrom von 22,5 klm erzielt. Die Lebensdauer liegt ebenfalls über 2000 Stunden.A luminous flux of 22.5 klm was achieved with this lamp. The service life is also over 2000 hours.
Die räumlich-körperliche Ausgestaltung ist konventionell und entspricht beispielsweise der in der Europäischen Patentanmeldung mit der Anmeldenummer 91 120 910.4 und der Veröffentlichungsnummer 0 492 205 A2 erläuterten Form. Die entsprechende Offenbarung ist hiermit in Bezug genommen.
The spatial-physical design is conventional and corresponds, for example, to the form explained in the European patent application with the application number 91 120 910.4 and the publication number 0 492 205 A2. The corresponding disclosure is hereby incorporated by reference.
Claims
1. Metallhalogenid-Entladungslampe mit einer Farbtemperatur über 4800 K mit einer Füllung aus zumindest folgenden Bestandteilen:1. Metal halide discharge lamp with a color temperature above 4800 K with a filling of at least the following components:
- einem Zündgas,- an ignition gas,
- Quecksilber und - einem Halogen, dadurch gekennzeichnet, daß die Füllung ferner:- mercury and - a halogen, characterized in that the filling furthermore:
- Lithium,- lithium,
- Indium,- indium,
- Thallium, - Zinn und- thallium, - tin and
- kein Seltenerdelement enthält.- does not contain a rare earth element.
2. Lampe nach Anspruch 1 mit einer Farbtemperatur über 5000 K.2. Lamp according to claim 1 with a color temperature above 5000 K.
3. Lampe nach Anspruch 1 oder 2 mit einer auf die Bogenlänge bezoge- nen spezifischen Leistung von 40 bis 80 W/mm.3. Lamp according to claim 1 or 2 with a specific power of 40 to 80 W / mm based on the arc length.
4. Lampe nach einem der vorgehenden Ansprüche mit einer Wandbelastung von 30 bis 60 W/cm2.4. Lamp according to one of the preceding claims with a wall load of 30 to 60 W / cm 2 .
5. Lampe nach einem der vorgehenden Ansprüche mit natriumfreier Füllung.5. Lamp according to one of the preceding claims with sodium-free filling.
6. Lampe nach einem der vorgehenden Ansprüche, deren Füllung genau die genannten Bestandteile enthält.
6. Lamp according to one of the preceding claims, the filling of which contains precisely the components mentioned.
7. Lampe nach einem der vorgehenden Ansprüche mit bezüglich der Metallhalogenide - auf die Jodide der Metalle außer Quecksilber bezogen - stöchiometrischem Halogenanteil in der Füllung.7. Lamp according to one of the preceding claims with respect to the metal halides - based on the iodides of metals other than mercury - stoichiometric halogen content in the filling.
8. Lampe nach einem der vorgehenden Ansprüche mit folgenden Konzentrationen in der Füllung:8. Lamp according to one of the preceding claims with the following concentrations in the filling:
- Lithium: 0,15 - 3,0 μmol/ml- Lithium: 0.15 - 3.0 µmol / ml
- Indium: 0,2 - 2,0 μmol/ml- Indium: 0.2 - 2.0 µmol / ml
- Thallium: 0,05 - 0,5 μmol/mlThallium: 0.05-0.5 μmol / ml
- Zinn: 0,5 - 5,0 μmol/ml.
- Tin: 0.5 - 5.0 μmol / ml.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19716462 | 1997-04-21 | ||
| DE19716462 | 1997-04-21 | ||
| PCT/DE1998/001097 WO1998048446A2 (en) | 1997-04-21 | 1998-04-20 | Long-lasting metal halide discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0925602A2 true EP0925602A2 (en) | 1999-06-30 |
| EP0925602B1 EP0925602B1 (en) | 2002-09-04 |
Family
ID=7827053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98931952A Expired - Lifetime EP0925602B1 (en) | 1997-04-21 | 1998-04-20 | Long-lasting metal halide discharge lamp |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6218781B1 (en) |
| EP (1) | EP0925602B1 (en) |
| JP (1) | JP2000512803A (en) |
| DE (1) | DE59805403D1 (en) |
| WO (1) | WO1998048446A2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29905662U1 (en) | 1999-03-26 | 2000-08-10 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München | Long life metal halide discharge lamp |
| EP1271614B1 (en) * | 2001-06-27 | 2005-09-21 | Matsushita Electric Industrial Co., Ltd. | Metal Halide Lamp |
| DE10242049A1 (en) * | 2002-09-11 | 2004-03-25 | Philips Intellectual Property & Standards Gmbh | Low pressure discharge lamp comprises a gas discharge vessel containing a noble gas filling as buffer gas, electrodes and devices for producing and maintaining a low pressure gas discharge, and a zinc halide |
| US7847484B2 (en) * | 2004-12-20 | 2010-12-07 | General Electric Company | Mercury-free and sodium-free compositions and radiation source incorporating same |
| 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 |
| DE102008049476A1 (en) * | 2008-09-29 | 2010-04-01 | Osram Gesellschaft mit beschränkter Haftung | High pressure discharge lamp |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7203720A (en) * | 1972-03-20 | 1973-09-24 | ||
| JPS5550567A (en) * | 1978-10-11 | 1980-04-12 | Toshiba Corp | Metal halide lamp |
| US4360758A (en) * | 1981-01-23 | 1982-11-23 | Westinghouse Electric Corp. | High-intensity-discharge lamp of the mercury-metal halide type which efficiently illuminates objects with excellent color appearance |
| DD203430A1 (en) * | 1982-01-19 | 1983-10-19 | Kloss | ELECTRODE STABILIZED HIGH-PRESSURE DISCHARGE LAMP WITH LIGHTING ACCESSORIES |
| US5138229A (en) * | 1989-09-20 | 1992-08-11 | Toshiba Lighting & Technology Corporation | Single-sealed metal vapor electric discharge lamp |
| DE4040858A1 (en) | 1990-12-20 | 1992-06-25 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | METAL HALOGENIDE HIGH PRESSURE DISCHARGE LAMP |
| JPH0547348A (en) * | 1991-08-15 | 1993-02-26 | Toshiba Lighting & Technol Corp | Metal halide lamp |
| RU2058620C1 (en) * | 1993-06-21 | 1996-04-20 | Государственный научно-исследовательский и проектный институт редкометаллической промышленности "Гиредмет" | Low-pressure luminescent lamp |
| DE4327534A1 (en) * | 1993-08-16 | 1995-02-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metal halide discharge lamp for photo-optical purposes |
-
1998
- 1998-04-20 DE DE59805403T patent/DE59805403D1/en not_active Expired - Fee Related
- 1998-04-20 WO PCT/DE1998/001097 patent/WO1998048446A2/en active IP Right Grant
- 1998-04-20 JP JP10544725A patent/JP2000512803A/en not_active Withdrawn
- 1998-04-20 EP EP98931952A patent/EP0925602B1/en not_active Expired - Lifetime
- 1998-04-20 US US09/202,087 patent/US6218781B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9848446A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998048446A2 (en) | 1998-10-29 |
| US6218781B1 (en) | 2001-04-17 |
| JP2000512803A (en) | 2000-09-26 |
| WO1998048446A3 (en) | 1999-01-21 |
| DE59805403D1 (en) | 2002-10-10 |
| EP0925602B1 (en) | 2002-09-04 |
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