EP0925602B1 - Long-lasting metal halide discharge lamp - Google Patents
Long-lasting metal halide discharge lamp Download PDFInfo
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- EP0925602B1 EP0925602B1 EP98931952A EP98931952A EP0925602B1 EP 0925602 B1 EP0925602 B1 EP 0925602B1 EP 98931952 A EP98931952 A EP 98931952A EP 98931952 A EP98931952 A EP 98931952A EP 0925602 B1 EP0925602 B1 EP 0925602B1
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- lamp
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- metal halide
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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 discharge lamp according to the Preamble of claim 1. It relates in particular to a metal halide discharge lamp for the area of application of effect lighting, 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 in relation to the ambient lighting prominent and enhanced accent lighting limited areas, e.g. in the house and apartment, in galleries or at Events.
- the optical properties of light in particular to the location of the light generation, to the luminous flux related to lamp power and color temperature Requirements placed between the general lighting area and special requirements, such as projection are.
- DE-A-3 242 752 discloses a metal halide discharge lamp which specifically to replace halogen lamps with color temperatures in the range of 3200 K ⁇ 200 K is suitable. Contains the discharge vessel of the lamp in addition to argon, mercury and iodine, the other filling components Indium, sodium, lithium, tin and thallium. The goal is with this lamp Color temperatures in the range from 3000 K to 4600 K and color rendering indices reachable from over 90.
- US-A-3 852 630 is a metal halide discharge lamp with satisfactory color rendering even in to provide the red region of the spectrum. It should be used Disadvantage of lithium iodide - namely a relatively short lifespan the lamp (a few hundred hours of operation) - should be avoided. To solve this task, a filling with the components noble gas, Mercury, iodine and sodium, calcium, thallium and indium are proposed.
- US A-4 360 758 discloses a high metal halide discharge lamp Luminous efficacy and good color rendering.
- the filling components are noble gas, Mercury, iodine and thallium, calcium, tin and indium.
- the invention is based on the technical problem with a metal halide discharge lamp according to the preamble of claim 1, the life to increase.
- the invention assumes that devitrification, ie increasing Crystallization of the bulb of a metal halide discharge lamp essentially determines their lifespan.
- the invention therefore sees a filling without a rare earth element because the rare earth elements prove to be essential Cause of the devitrification phenomenon with increasing operating age have exposed the lamp.
- the described effects of the invention can be realized with a Filling, in addition to the conventional components, ignition gas, mercury and halogen containing lithium, indium, thallium and tin.
- Lithium provides the red component, indium the blue component and thallium for the proportion of green in the radiation from the lamp. All three elements shine essentially spectral lines, so that tin is used according to the invention will, especially at low power and wall load realizing a good continuum between the lines.
- Lamps with a color temperature of more than 4800 K, more preferably more than 5000 K are preferred.
- the arc length of the respective 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. Prefers is, in particular, that apart from the above no other Ingredients in the filling are present from the usual traces apart.
- Preferred halogens are the conventionally known elements iodine and Bromine, i.e. the metals mentioned lithium, indium, thallium and tin added to the lamp as iodides and / or as bromides. conventionally, if part of the mercury is added as iodide or bromide, to avoid excessive lamp blackening. According to the invention This gives the additional advantage that this measure in the lamp fill is unnecessary. So it can be the mercury elementary and the halogen with respect to the halides of the elements Lithium, indium, thallium, tin sourced stoichiometrically or only in form the halides of these four elements can be added. This results in the production the advantage that at least one component is less, namely the mercury iodide, bromide or generally halide.
- the invention finds a useful field of application in the field of performance from 200 to 2500 W per lamp, but can also be outside of these ranges be applied. It is suitable, as already explained at the beginning, especially for the effect light market, in which slightly lower requirements to the color locus and the luminance than in special applications as placed in the film area or projection area. In contrast, however, the significantly improved service life is particularly evident in the effect light area noticeable as an economically significant advantage.
- lamps are often with an additional outer bulb fitted. You can choose between the outer and inner pistons instead of a vacuum, special gas fillings are also used come.
- the invention is in the same way for lamps with or suitable without outer bulb.
- the outer bulb can e.g. can also be advantageous as protection against contact, for example if an internal piston provided with two internal pistons on opposite sides be used in a lamp that can only be connected on one side should. Then one of the two connections of the inner piston must be on the The outer wall of the inner bulb is guided to the other side, an outer bulb is attached as protection against contact. Finally Improved explosion protection can also be a reason for choosing one Be a lamp with an outer bulb.
- a 300 W lamp has an average arc length of 5 mm. It is for the Operation designed without an outer piston and has a piston volume of 1.1 ml. Using an outer bulb would increase the Wall temperature slightly lowered the color temperature. To compensate the wall load is reduced (i.e. the lamp power is reduced or the inner bulb increases) and / or the proportion of lithium iodide decreases, to get the desired color temperature value. This is in present example 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. She is designed for operation without an outer piston 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 lifespan is also over 2000 hours.
- the spatial-physical design is conventional and corresponds for example the one in the European patent application with the application number 91 120 910.4 and publication number 0 492 205 A2 Shape.
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Description
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 area of application of effect lighting, 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, einzuordnen sind.Such lamps are preferably used for luminaires for architectural and effect lighting, in particular in relation to the ambient lighting prominent and enhanced accent lighting limited areas, e.g. in the house and apartment, in galleries or at Events. In this area, the optical properties of light, in particular to the location of the light generation, to the luminous flux related to lamp power and color temperature Requirements placed between the general lighting area and special requirements, such as 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 slightly higher than the general lighting area Claims to the technical characteristics of such lamps great value for the longest possible service life, even in the effect light area placed on the one hand the cost of the replacement lamps and the one with the Exchange and reduce labor involved Increase reliability and freedom from maintenance.
Weiterhin muß dabei auch auf eine gute Farbwiedergabe und die richtige Farbtemperatur geachtet werden.Furthermore, it must also ensure good color rendering and the correct one Color temperature must be respected.
DE-A-3 242 752 offenbart eine Metallhalogenid-Entladungslampe, die speziell zur Ablösung von Halogenglühlampen mit Farbtemperaturen im Bereich von 3200 K ± 200 K geeignet ist. Das Entladungsgefäß der Lampe enthält neben Argon, Quecksilber und Jod die weiteren Füllungsbestandteile Indium, Natrium, Lithium, Zinn und Thallium. Ziel ist es, mit dieser Lampe Farbtemperaturen im Bereich von 3000 K bis 4600 K und Farbwiedergabeindices von über 90 zu erreichen.DE-A-3 242 752 discloses a metal halide discharge lamp which specifically to replace halogen lamps with color temperatures in the range of 3200 K ± 200 K is suitable. Contains the discharge vessel of the lamp in addition to argon, mercury and iodine, the other filling components Indium, sodium, lithium, tin and thallium. The goal is with this lamp Color temperatures in the range from 3000 K to 4600 K and color rendering indices reachable from over 90.
Eine der US-A-3 852 630 zugrundeliegende Aufgabe besteht darin, eine Metallhalogenid-Entladungslampe mit befriedigender Farbwiedergabe auch im roten Bereich des Spektrums bereitzustellen. Dabei soll der bei Verwendung von Lithiumjodid auftretende Nachteil -nämlich eine relativ geringe Lebensdauer der Lampe (einige hundert Betriebsstunden) - vermieden werden. Zur Lösung dieser Aufgabe wird eine Füllung mit den Bestandteilen Edelgas, Quecksilber, Jod sowie Natrium, Kalzium, Thallium und Indium vorgeschlagen.One of the objects underlying US-A-3 852 630 is a metal halide discharge lamp with satisfactory color rendering even in to provide the red region of the spectrum. It should be used Disadvantage of lithium iodide - namely a relatively short lifespan the lamp (a few hundred hours of operation) - should be avoided. To solve this task, a filling with the components noble gas, Mercury, iodine and sodium, calcium, thallium and indium are proposed.
US A-4 360 758 offenbart eine Metallhalogenid-Entladungslampe mit hoher Lichtausbeute und guter Farbwiedergabe. Die Füllungsbestandteile sind Edelgas, Quecksilber, Jod sowie Thallium, Kalzium, Zinn und Indium. US A-4 360 758 discloses a high metal halide discharge lamp Luminous efficacy and good color rendering. The filling components are noble gas, Mercury, iodine and thallium, calcium, tin and indium.
Der Erfindung liegt das technische Problem zugrunde, bei einer Metallhalogenid-Entladungslampe nach dem Oberbegriff des Anspruchs 1 die Lebensdauer zu erhöhen.The invention is based on the technical problem with a metal halide discharge lamp according to the preamble of claim 1, the life to increase.
Dieses Problem wird gelöst durch die kennzeichnenden Merkmale in Anspruch 1. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.This problem is solved by the characteristic features 1. Preferred embodiments of the invention are in the dependent Claims specified.
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 wesentliche Ursache für das Entglasungsphänomen bei zunehmendem Betriebsalter der Lampe herausgestellt haben.First of all, the invention assumes that devitrification, ie increasing Crystallization of the bulb of a metal halide discharge lamp essentially determines their lifespan. The invention therefore sees a filling without a rare earth element because the rare earth elements prove to be essential Cause of the devitrification phenomenon with increasing operating age have exposed 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 Leistungsaufnahme verringert werden. Dies war in konventioneller Weise bisher 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 Entglasung und damit die Lebensdauer der Lampe.With the waiver according to the invention of a rare earth element has proven to be additional beneficial effect - in addition to extending the lifespan due to lower devitrification - also a reduced tendency of the lamp to Blackening on the inside of the piston results. The underlying described According to the problem, this effect can lead to a reduction the wall load can be used. For this purpose either with a given electrical power consumption of the lamp Piston increases or vice versa the power consumption for a given piston size be reduced. This has been conventional in the past not possible without purchasing the blackening problems that then occur to have to take. The lower wall load also reduces the Devitrification tendency and thus improved over the already described direct The effect of not using rare earth elements is devitrification and thus the life of the lamp.
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 Thallium 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, in addition to the conventional components, ignition gas, mercury and halogen containing lithium, indium, thallium and tin. Lithium provides the red component, indium the blue component and thallium for the proportion of green in the radiation from the lamp. All three elements shine essentially spectral lines, so that tin is used according to the invention will, especially at low power and wall load realizing a good continuum between the lines. Through the whole 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 considerably improved lifespan.
Bevorzugt sind Lampen mit einer Farbtemperatur von über 4800 K, besser über 5000 K. Wie bereits erläutert, liegt die Bogenlänge der jeweiligen Lampenleistung 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 color temperature of more than 4800 K, more preferably more than 5000 K are preferred. As already explained, the arc length of the respective 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, ist erfindungsgemäß weiterhin vorgesehen sein, daß die Lampenfüllung kein Natrium enthält. Bevorzugt ist insbesondere, daß außer den genannten überhaupt keine weiteren Bestandteile in der Füllung vorhanden sind, von den üblichen Spuren abgesehen.In order to be able to design the color temperature as high, the invention also applies be provided that the lamp filling contains no sodium. Prefers is, in particular, that apart from the above no other Ingredients in the filling are present from the usual traces apart.
Bevorzugte Halogene sind die konventionell bekannten Elemente Jod und Brom, d.h. die genannten Metalle Lithium, Indium, Thallium und Zinn werden 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 added to the lamp as iodides and / or as bromides. conventionally, if part of the mercury is added as iodide or bromide, to avoid excessive lamp blackening. According to the invention This gives the additional advantage that this measure in the lamp fill is unnecessary. So it can be the mercury elementary and the halogen with respect to the halides of the elements Lithium, indium, thallium, tin sourced stoichiometrically or only in form the halides of these four elements can be added. This results in the production the advantage 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:
- Lithium: 0,15 - 3,0 µmol/ml, insbesondere 0,15 - 1,5 µmol/ml
- Indium: 0,2 - 2,0 µmol/ml
- Thallium: 0,05 - 0,5 µmol/ml
- Zinn: 0,5 - 5,0 µmol/ml.
- Lithium: 0.15 - 3.0 µmol / ml, especially 0.15 - 1.5 µmol / ml
- Indium: 0.2 - 2.0 µmol / ml
- Thallium: 0.05-0.5 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 not only in the overall combination, but also individually and independently of each other and in Sub-combinations are an advantage.
Einen sinnvollen Anwendungsbereich findet die Erfindung im Leistungsbereich von 200 bis 2500 W pro Lampe, kann aber auch außerhalb dieser Bereiche 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 useful field of application in the field of performance from 200 to 2500 W per lamp, but can also be outside of these ranges be applied. It is suitable, as already explained at the beginning, especially for the effect light market, in which slightly lower requirements to the color locus and the luminance than in special applications as placed in the film area or projection area. In contrast, However, the significantly improved service life is particularly evident in the effect light area noticeable 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 Anwendung kommen. Die Erfindung ist in gleicher Weise für Lampen mit oder ohne Außenkolben geeignet.Commercially available lamps are often with an additional outer bulb fitted. You can choose between the outer and inner pistons instead of a vacuum, special gas fillings are also used come. The invention is in the same way for lamps with or suitable without 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 werden 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 internal piston provided with two internal pistons on opposite sides be used in a lamp that can only be connected on one side should. Then one of the two connections of the inner piston must be on the The outer wall of the inner bulb is guided to the other side, an outer bulb is attached as protection against contact. Finally Improved explosion protection can also be a reason for choosing one Be a lamp with an outer bulb.
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 würde 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 for the Operation designed without an outer piston and has a piston volume of 1.1 ml. Using an outer bulb would increase the Wall temperature slightly lowered the color temperature. To compensate the wall load is reduced (i.e. the lamp power is reduced or the inner bulb increases) and / or the proportion of lithium iodide decreases, to get the desired color temperature value. This is in present example 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 T1/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 T1 / 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. she is designed for operation without an outer piston 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 lifespan 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.The spatial-physical design is conventional and corresponds for example the one in the European patent application with the application number 91 120 910.4 and publication number 0 492 205 A2 Shape.
Claims (7)
- Metal halide discharge lamp having a colour temperature of over 4800 K and having a sodium-free fill comprising at least the following constituents:characterized in that the fill also contains:a firing gas,mercury, anda halogen,lithium,indium,thallium,tin, andno rare earth element
- Lamp according to Claim 1, having a colour temperature of over 5000 K.
- Lamp according to Claim 1 or 2, having a specific output, based on the arc length, of 40 to 80 W/mm.
- Lamp according to one of the preceding claims, having a wall loading of 30 to 60 W/cm2.
- Lamp according to one of the preceding claims, the fill of which contains precisely the constituents listed.
- Lamp according to one of the preceding claims, having a halogen content in the fill which is stoichiometric with regard to the metal halides - based on the halides of the metals except for mercury.
- Lamp according to one of the preceding claims, having the following concentrations in the fill:lithium: 0.15 - 3.0 µmol/mlindium: 0.2 - 2.0 µmol/mlthallium: 0.05 - 0.5 µmol/mltin: 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 EP0925602A2 (en) | 1999-06-30 |
| EP0925602B1 true EP0925602B1 (en) | 2002-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98931952A Expired - Lifetime EP0925602B1 (en) | 1997-04-21 | 1998-04-20 | Long-lasting metal halide discharge lamp |
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|---|---|
| US (1) | US6218781B1 (en) |
| EP (1) | EP0925602B1 (en) |
| JP (1) | JP2000512803A (en) |
| DE (1) | DE59805403D1 (en) |
| WO (1) | WO1998048446A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29905662U1 (en) | 1999-03-26 | 2000-08-10 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3852630A (en) * | 1972-03-20 | 1974-12-03 | Philips Corp | Halogen containing high-pressure mercury vapor discharge 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 |
| DE3242752A1 (en) * | 1982-01-19 | 1983-09-08 | Jenoptik Jena Gmbh, Ddr 6900 Jena | Electrode-stabilised high-pressure discharge lamp with luminous additives |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5550567A (en) * | 1978-10-11 | 1980-04-12 | Toshiba Corp | Metal halide lamp |
| 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 EP EP98931952A patent/EP0925602B1/en not_active Expired - Lifetime
- 1998-04-20 JP JP10544725A patent/JP2000512803A/en not_active Withdrawn
- 1998-04-20 US US09/202,087 patent/US6218781B1/en not_active Expired - Fee Related
- 1998-04-20 WO PCT/DE1998/001097 patent/WO1998048446A2/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3852630A (en) * | 1972-03-20 | 1974-12-03 | Philips Corp | Halogen containing high-pressure mercury vapor discharge 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 |
| DE3242752A1 (en) * | 1982-01-19 | 1983-09-08 | Jenoptik Jena Gmbh, Ddr 6900 Jena | Electrode-stabilised high-pressure discharge lamp with luminous additives |
Also Published As
| Publication number | Publication date |
|---|---|
| US6218781B1 (en) | 2001-04-17 |
| EP0925602A2 (en) | 1999-06-30 |
| JP2000512803A (en) | 2000-09-26 |
| WO1998048446A3 (en) | 1999-01-21 |
| WO1998048446A2 (en) | 1998-10-29 |
| DE59805403D1 (en) | 2002-10-10 |
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