EP1217644A1 - Short arc high pressure discharge lamp for use in digital projection techniques - Google Patents

Short arc high pressure discharge lamp for use in digital projection techniques Download PDF

Info

Publication number
EP1217644A1
EP1217644A1 EP01127159A EP01127159A EP1217644A1 EP 1217644 A1 EP1217644 A1 EP 1217644A1 EP 01127159 A EP01127159 A EP 01127159A EP 01127159 A EP01127159 A EP 01127159A EP 1217644 A1 EP1217644 A1 EP 1217644A1
Authority
EP
European Patent Office
Prior art keywords
anode
cathode
pressure discharge
discharge lamp
lamp
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
Application number
EP01127159A
Other languages
German (de)
French (fr)
Other versions
EP1217644B1 (en
Inventor
Thomas Dr. Mehr
Ralf Seedorf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1217644A1 publication Critical patent/EP1217644A1/en
Application granted granted Critical
Publication of EP1217644B1 publication Critical patent/EP1217644B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps

Definitions

  • the invention is based on a short-arc high-pressure discharge lamp according to the preamble of claim 1. It is in particular a short-arc high-pressure discharge lamp with a xenon filling, as used in cinema projection.
  • the well-known xenon short-arc lamps for projection purposes were on Arc lengths and electrode geometries optimized for the 35 to 70 mm Film projection are ideal.
  • the screen diagonals of these films are in the range between 28 and 60 mm. If you put such standard lamps in modern ones digital projection systems with DMD, DLP, LCD and D-ILA technology a mismatch between the lamp and the optical system lost a lot of light that does not reach the screen. This lost Light is converted into heat in the projector and leads to additional ones Problems. So far, this problem could only be solved by a larger one Lamp power, which then requires a higher cooling effort, an optimized Mirror design that places high demands on accuracy and the Simulation effort poses and additional double mirrors, which in turn Bring cooling problems in the reflector volume with them, be solved.
  • the object of the present invention is a short-arc lamp with xenon filling according to the preamble of claim 1 to provide a optimal focus of light on small cross sections between 10 and 25 mm, corresponding to the diagonals of the integrators, as in digital Projection techniques (DMD, DLP, LCD and D-ILA) are used, enable.
  • DMD digital Projection techniques
  • the tip of the conical end portion of the cathode to form as a hemisphere
  • Larger hemisphere diameters result in a smaller one Luminance, smaller diameters lead to increased cathode erosion.
  • the conical end section of the cathode advantageously has a cone angle ⁇ between 36 and 44 °.
  • the frustoconical End portion of the anode for optimal operation a cone angle ⁇ between 90 and 105 °. Sharper geometries lead to severe burn-off the electrode tips, while blunt geometries a strong one Result in shadowing in the projector.
  • the lamp should have the lamp with a nominal power P between 0 and 5.5 kW with a lamp current I in A of the relation 22 x P + 38 ⁇ I ⁇ 22 x P + 65 and at a nominal power P between 5, 5 and 12 kW with a lamp current I in A with the relation 10 x P + 100 ⁇ I ⁇ 22 x P + 65. While lower currents reduce the light output in the system, increases with higher ones Flowing erosion of the cathode and the maintenance falls below acceptable Values.
  • FIG. 1 shows a short-arc high-pressure discharge lamp according to the invention 1 with an Xe filling.
  • the lamp 1 with a power consumption of 3000 W consists of a rotationally symmetrical lamp bulb 2 made of quartz glass at its two ends, a lamp shaft 3, 4 also made of quartz glass.
  • An electrode rod is in one shaft 3 5 melted from gas-tight tungsten, the inner end of which Cathode 6 carries.
  • In the other lamp shaft 4 there is also an electrode rod 7 melted gas-tight from tungsten, at the inner end one Anode 8 is attached.
  • Base systems 9, 10 attached for mounting and electrical contacting.
  • the cathode 6 is made up of one of the anodes 8 facing conical end portion 6a and one of the electrode rod 5 facing end portion 6b with a circular cylindrical and frustoconical Section together, being between these two sections 6a, 6b, also referred to as a heat accumulation groove circular cylindrical portion 6c of smaller diameter is located.
  • the Tip of the conical end section 6a facing the anode 8 a cone angle ⁇ of 40 ° is a hemisphere with a radius R of 0.6 mm trained.
  • the anode 8 consists of a circular cylindrical middle section 8a with a Diameter D of 22 mm and two frustoconical end sections 8b, 8c facing the cathode 6 or the electrode rod 7 are.
  • the frustoconical end portion 8c facing the cathode 6 has a plateau AP with a diameter of 6 mm. All sections of the two electrodes 6, 8 are made of tungsten.
  • the two electrodes 6, 8 are so opposite in the axis of the lamp bulb 2 attached that there is an electrode gap when the lamp is hot or an arc length of 3.5 mm.
  • This lamp can be used in a digital projection system compared to conventional short-arc high-pressure discharge lamps Xenon filling achieve an increase of up to 50%.

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Discharge Lamp (AREA)
  • Projection Apparatus (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

Bei einer Kurzbogen-Hochdruckentladungslampe (1) mit einer Xenonfüllung für digitale Projektionszwecke ist der Abstand L in mm der beiden einander zugewandten Endabschnitte (6a, 8c) von Kathode (6) und Anode (8) im Heißzustand der Lampe durch die Relation 0,8 x P <= L <= 1 x P + 1 gegeben, wobei P die Lampenleistung in kW ist. Außerdem folgt der Durchmesser D des kreiszylindrischen Mittelabschnitts (8a) der Anode (8) in mm der Relation D >= 2,1 x L + 10. <IMAGE>In the case of a short-arc high-pressure discharge lamp (1) with a xenon filling for digital projection purposes, the distance L in mm of the two mutually facing end sections (6a, 8c) of the cathode (6) and anode (8) is 0.8 when the lamp is hot x P <= L <= 1 x P + 1, where P is the lamp power in kW. In addition, the diameter D of the circular cylindrical central section (8a) of the anode (8) in mm follows the relation D> = 2.1 x L + 10. <IMAGE>

Description

Technisches GebietTechnical field

Die Erfindung geht aus von einer Kurzbogen-Hochdruckentladungslampe gemäß dem Oberbegriff des Anspruchs 1. Es handelt sich dabei insbesondere um eine Kurzbogen-Hochdruckentladungslampe mit einer Xenonfüllung, wie sie in der Kinoprojektion verwendet wird.The invention is based on a short-arc high-pressure discharge lamp according to the preamble of claim 1. It is in particular a short-arc high-pressure discharge lamp with a xenon filling, as used in cinema projection.

Stand der TechnikState of the art

Die bekannten Xenon-Kurzbogenlampen für Projektionszwecke wurden auf Bogenlängen und Elektrodengeometrien optimiert, die für die 35 bis 70 mm Filmprojektion ideal sind. Die Bilddiagonalen dieser Filme liegen im Bereich zwischen 28 und 60 mm. Setzt man solche Standard-Lampen in die modernen digitalen Projektionssysteme mit DMD-, DLP-, LCD- und D-ILA-Technik ein, so geht durch die Fehlanpassung zwischen Lampe und optischem System viel Licht verloren, das die Leinwand nicht erreicht. Dieses verlorengegangene Licht wird im Projektor in Wärme umgewandelt und führt zu zusätzlichen Problemen. Bisher konnte diese Problem nur durch eine größere Lampenleistung, die dann einen höhern Kühlaufwand erfordert, ein optimiertes Spiegeldesign, das hohe Anforderungen an die Genauigkeit und den Simulationsaufwand stellt und zusätzliche Doppelspiegel, die wiederum Kühlprobleme im Reflektorvolumen mit sich bringen, gelöst werden. The well-known xenon short-arc lamps for projection purposes were on Arc lengths and electrode geometries optimized for the 35 to 70 mm Film projection are ideal. The screen diagonals of these films are in the range between 28 and 60 mm. If you put such standard lamps in modern ones digital projection systems with DMD, DLP, LCD and D-ILA technology a mismatch between the lamp and the optical system lost a lot of light that does not reach the screen. This lost Light is converted into heat in the projector and leads to additional ones Problems. So far, this problem could only be solved by a larger one Lamp power, which then requires a higher cooling effort, an optimized Mirror design that places high demands on accuracy and the Simulation effort poses and additional double mirrors, which in turn Bring cooling problems in the reflector volume with them, be solved.

Darstellung der ErfindungPresentation of the invention

Es ist Aufgabe der vorliegenden Erfindung, eine Kurzbogenlampe mit Xenonfüllung gemäß dem Oberbegriff des Anspruchs 1 bereitzustellen, die eine optimale Fokussierung des Lichts auf kleine Querschnitte zwischen 10 und 25 mm, entsprechend den Diagonalen der Integratoren, wie sie bei digitalen Projektionstechniken (DMD, DLP, LCD und D-ILA) Verwendung finden, ermöglichen.The object of the present invention is a short-arc lamp with xenon filling according to the preamble of claim 1 to provide a optimal focus of light on small cross sections between 10 and 25 mm, corresponding to the diagonals of the integrators, as in digital Projection techniques (DMD, DLP, LCD and D-ILA) are used, enable.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen. Die Lampe ist außerdem vorteilhaft mit einem Lampenstrom zu betreiben der den Merkmalen des Anspruchs 6 genügt.This object is achieved by the characterizing features of claim 1 solved. Particularly advantageous configurations can be found in the dependent ones Claims. The lamp is also advantageous with a lamp current to operate which meets the features of claim 6.

Durch die Festlegung des Abstands L in mm der beiden einander zugewandten Endabschnitte von Anode und Kathode im Heißzustand der Lampe gemäß der Relation 0,8 x P ≤ L ≤ 1 x P + 1, wobei P die Lampenleistung in kW ist, wird eine optimale Ausleuchtung des Bildfensters erreicht. Bei größeren Bogenlängen geht die Effizienz des Systems, d. h. das Verhältnis von abgegebenem Lichtstrom zu aufgenommener Leistung deutlich nach unten. Ist der Abstand Anode - Kathode kürzer als in der Relation, so sinkt die Lebensdauer der Lampe unter akzeptable Werte.By defining the distance L in mm of the two facing each other End sections of the anode and cathode when the lamp is hot according to the relation 0.8 x P ≤ L ≤ 1 x P + 1, where P is the lamp power in kW, optimal illumination of the picture window is achieved. For larger ones Arc lengths affects the efficiency of the system, i. H. the ratio of delivered Luminous flux to power consumed significantly down. is the anode - cathode distance is shorter than in the relation, so the service life decreases the lamp below acceptable values.

Die stärkere Aufheizung der Anodenvorderfläche (Anodenplateau) bei kürzeren Bögen erfordert auch eine Anpassung der Anodengeometrie. So muss der Durchmesser D der Anode in mm der Relation D ≥ 2,1 x L + 10 genügen, wobei L der Abstand der einander zugewandten Endabschnitte von Anode und Kathode in mm im Heißzustand der Lampe ist.The stronger heating of the anode front surface (anode plateau) with shorter ones Arches also require anode geometry adjustment. So must the diameter D of the anode in mm satisfies the relation D ≥ 2.1 x L + 10, where L is the distance between the facing end sections of the anode and cathode in mm when the lamp is hot.

Vorteilhaft sollte für eine optimale Lichtausbeute bei hoher Lebensdauer der der Kathode zugewandte kegelstumpfförmige Endabschnitt der Anode ein Plateau AP mit einem Durchmesser in mm besitzen, das der Relation 1,8 x L - 1 ≤ AP ≤ 1,8 x L + 1 genügt, wobei L wiederum der Abstand der einander zugewandten Enden von Anode und Kathode in mm im Heißzustand ist. Bei Abweichungen des Anodenplateaudurchmessers nach unten kommt es aufgrund starker Erosion (Kraterbildung) am Anodenplateau zu einer Lebensdauerverkürzung. Im Falle eines größeren Anodenplateaus als durch die Relation gegeben, geht die Systemeffizienz aufgrund der Abschattung zurück.It should be advantageous for an optimal light yield with a long lifespan the frustoconical end portion of the anode facing the cathode Have plateau AP with a diameter in mm that corresponds to the relation 1.8 x L - 1 ≤ AP ≤ 1.8 x L + 1 is sufficient, where L is the distance between each other facing ends of the anode and cathode in mm is hot. at Deviations in the anode plateau diameter downward are due to severe erosion (crater formation) on the anode plateau to shorten the service life. In the case of a larger anode plateau than the relation given the system efficiency decreases due to the shadowing.

Für eine optimale Leuchtdichteverteilung über die gesamte Lebensdauer ist weiterhin vorteilhaft die Spitze des kegelförmigen Endabschnitts der Kathode als Halbkugel auszubilden, wobei der Radius R der Halbkugel in mm der Relation 0,12 x P + 0,1 ≤ R ≤ 0,12 x P + 0,5 mit P als Lampenleistung in kW genügt. Größere Durchmesser der Halbkugel resultieren in einer geringeren Leuchtdichte, kleinere Durchmesser führen zu einem verstärkten Kathodenabbrand.For an optimal luminance distribution over the entire service life further advantageously the tip of the conical end portion of the cathode to form as a hemisphere, the radius R of the hemisphere in mm of Relation 0.12 x P + 0.1 ≤ R ≤ 0.12 x P + 0.5 with P as lamp power in kW enough. Larger hemisphere diameters result in a smaller one Luminance, smaller diameters lead to increased cathode erosion.

Vorteilhaft besitzt der kegelförmige Endabschnitt der Kathode einen Kegelwinkel α zwischen 36 und 44°. Außerdem weist der kegelstumpfförmige Endabschnitt der Anode für einen optimalen Betrieb einen Kegelwinkel β zwischen 90 und 105° auf. Spitzere Geometrien führen zu einem starken Abbrand der Elektrodenspitzen, während stumpfere Geometrien eine starke Abschattung im Projektor zur Folge haben.The conical end section of the cathode advantageously has a cone angle α between 36 and 44 °. In addition, the frustoconical End portion of the anode for optimal operation a cone angle β between 90 and 105 °. Sharper geometries lead to severe burn-off the electrode tips, while blunt geometries a strong one Result in shadowing in the projector.

Für einen optimalen Betrieb mit einer ausreichend hohen Effizienz (Lumen/W) und einem akzeptablen Lichtstromrückgang über die Lebensdauer der Lampe sollte die Lampe bei einer Nennleistung P zwischen 0 und 5,5 kW mit einem Lampenstrom I in A der Relation 22 x P + 38 ≤ I ≤ 22 x P + 65 und bei einer Nennleistung P zwischen 5, 5 und 12 kW mit einem Lampenstrom I in A der Relation 10 x P + 100 ≤ I ≤ 22 x P + 65 betrieben werden. Während geringere Ströme die Lichtausbeute im System herabsetzen, steigt bei höheren Strömen die Erosion der Kathode und die Maintenance unterschreitet akzeptable Werte. For optimal operation with a sufficiently high efficiency (lumens / W) and an acceptable decrease in luminous flux over the lifetime The lamp should have the lamp with a nominal power P between 0 and 5.5 kW with a lamp current I in A of the relation 22 x P + 38 ≤ I ≤ 22 x P + 65 and at a nominal power P between 5, 5 and 12 kW with a lamp current I in A with the relation 10 x P + 100 ≤ I ≤ 22 x P + 65. While lower currents reduce the light output in the system, increases with higher ones Flowing erosion of the cathode and the maintenance falls below acceptable Values.

Beschreibung der ZeichnungenDescription of the drawings

Mit den folgenden Figuren soll die Erfindung anhand eines Ausführungsbeispiels näher erläutert werden:

  • Figur 1 zeigt eine erfindungsgemäße Kurzbogen-Hochdruckentladungslampe
  • Figur 2 zeigt in vergrößerter Darstellung die Elektrodenanordnung der Kurzbogen-Hochdruckentladungslampe gemäß Figur 1
    • The invention is to be explained in more detail with the aid of an exemplary embodiment with the following figures:
  • Figure 1 shows a short-arc high-pressure discharge lamp according to the invention
  • FIG. 2 shows an enlarged representation of the electrode arrangement of the short-arc high-pressure discharge lamp according to FIG. 1

    • In Figur 1 ist eine erfindungsgemäße Kurzbogen-Hochdruckentladungslampe 1 mit einer Xe-Füllung dargestellt. Die Lampe 1 mit einer Leistungsaufnahme von 3000 W besteht aus einem rotationssymmetrischen Lampenkolben 2 aus Quarzglas an dessen beiden Enden je ein Lampenschaft 3, 4 ebenfalls aus Quarzglas angesetzt ist. In den einen Schaft 3 ist ein Elektrodenstab 5 aus Wolfram gasdicht eingeschmolzen, dessen inneres Ende eine Kathode 6 trägt. In den anderen Lampenschaft 4 ist ebenfalls ein Elektrodenstab 7 aus Wolfram gasdicht eingeschmolzen, an dessen innerem Ende eine Anode 8 befestigt ist. An den äußeren Enden der Elektrodenschäfte 3, 4 sind Sockelsysteme 9, 10 zur Halterung und zur elektrischen Kontaktierung angebracht.FIG. 1 shows a short-arc high-pressure discharge lamp according to the invention 1 with an Xe filling. The lamp 1 with a power consumption of 3000 W consists of a rotationally symmetrical lamp bulb 2 made of quartz glass at its two ends, a lamp shaft 3, 4 also made of quartz glass. An electrode rod is in one shaft 3 5 melted from gas-tight tungsten, the inner end of which Cathode 6 carries. In the other lamp shaft 4 there is also an electrode rod 7 melted gas-tight from tungsten, at the inner end one Anode 8 is attached. At the outer ends of the electrode shafts 3, 4 are Base systems 9, 10 attached for mounting and electrical contacting.

    Wie aus der Figur 2 ersichtlich setzt sich die Kathode 6 aus einem der Anode 8 zugewandten kegelförmigen Endabschnitt 6a und einem dem Elektrodenstab 5 zugewandten Endabschnitt 6b mit einem kreiszylindrischen und kegelstumpfförmigen Teilabschnitt zusammen, wobei sich zwischen diesen beiden Abschnitten 6a, 6b ein, als Wärmestaunut bezeichneter, ebenfalls kreiszylindrischer Abschnitt 6c von kleinerem Durchmesser befindet. Die Spitze des der Anode 8 zugewandten kegelförmigen Endabschnitts 6a mit einem Kegelwinkel α von 40° ist als Halbkugel mit einem Radius R von 0,6 mm ausgebildet. As can be seen from FIG. 2, the cathode 6 is made up of one of the anodes 8 facing conical end portion 6a and one of the electrode rod 5 facing end portion 6b with a circular cylindrical and frustoconical Section together, being between these two sections 6a, 6b, also referred to as a heat accumulation groove circular cylindrical portion 6c of smaller diameter is located. The Tip of the conical end section 6a facing the anode 8 a cone angle α of 40 ° is a hemisphere with a radius R of 0.6 mm trained.

    Die Anode 8 besteht aus einem kreiszylindrischen Mittelabschnitt 8a mit einem Durchmesser D von 22 mm und zwei kegelstumpfförmigen Endabschnitten 8b, 8c die der Kathode 6 bzw. dem Elektrodenstab 7 zugewandt sind. Das der Kathode 6 zugewandte kegelstumpfförmige Endabschnitt 8c besitzt ein Plateau AP mit einem Durchmesser von 6 mm. Alle Abschnitte der beiden Elektroden 6, 8 bestehen aus Wolfram.The anode 8 consists of a circular cylindrical middle section 8a with a Diameter D of 22 mm and two frustoconical end sections 8b, 8c facing the cathode 6 or the electrode rod 7 are. The frustoconical end portion 8c facing the cathode 6 has a plateau AP with a diameter of 6 mm. All sections of the two electrodes 6, 8 are made of tungsten.

    Die beiden Elektroden 6, 8 sind in der Achse des Lampenkolbens 2 so gegenüberstehend angebracht, dass sich im Heißzustand der Lampe ein Elektrodenabstand bzw. eine Bogenlänge von 3, 5 mm ergibt.The two electrodes 6, 8 are so opposite in the axis of the lamp bulb 2 attached that there is an electrode gap when the lamp is hot or an arc length of 3.5 mm.

    Mit dieser Lampe lässt sich bei Einsatz in einem digitalen Projektionssystem gegenüber den herkömmlichen Kurzbogen-Hochruckentladungslampen mit Xenon-Füllung eine Steigerung von bis zu 50 % erzielen.This lamp can be used in a digital projection system compared to conventional short-arc high-pressure discharge lamps Xenon filling achieve an increase of up to 50%.

    Claims (6)

    Kurzbogen-Hochdruckentladungslampe (1) mit einem Entladungsgefäß (2), das neben einer Kathode (6) und einer Anode (8), die einander gegenüberstehen, eine Füllung aus zumindest Xenon enthält, wobei die Kathode (6) einen der Anode (8) zugewandten kegelförmigen Endabschnitt (6a) und die Anode (8) einen kreiszylindrischen Mittelabschnitt (8a) und einen der Kathode (6) zugewandten kegelstumpfförmigen Endabschnitt (8c) aufweist, dadurch gekennzeichnet, dass die Hochdruckentladungslampe (1) für den Einsatz in digitale Projektionstechniken folgende weitere Merkmale besitzt: der Abstand L in mm der beiden einander zugewandten Endabschnitte (6a, 8c) von Kathode (6) und Anode (8) im Heißzustand der Lampe ist durch die Relation 0,8 x P ≤ L ≤ 1 x P + 1 gegeben, wobei P die Lampenleistung in kW ist der Durchmesser D des kreiszylindrischen Mittelabschnitts (8a) der Anode (8) in mm ist durch die Relation D ≥ 2,1 x L + 10 gegeben, wobei L der Abstand der einander zugewandten Endabschnitte (6a, 8c) von Kathode (6) und Anode (8) in mm ist. Short-arc high-pressure discharge lamp (1) with a discharge vessel (2) which, in addition to a cathode (6) and an anode (8) which are opposite one another, contains a filling of at least xenon, the cathode (6) being one of the anode (8) facing conical end section (6a) and the anode (8) has a circular cylindrical middle section (8a) and a frustoconical end section (8c) facing the cathode (6), characterized in that the high-pressure discharge lamp (1) for use in digital projection techniques the following further Features: the distance L in mm of the two facing end sections (6a, 8c) of the cathode (6) and anode (8) when the lamp is hot is given by the relation 0.8 x P ≤ L ≤ 1 x P + 1 given, where P is the lamp power in kW the diameter D of the circular cylindrical central section (8a) of the anode (8) in mm is given by the relation D ≥ 2.1 x L + 10 given, L being the distance between the mutually facing end sections (6a, 8c) of the cathode (6) and anode (8) in mm. Kurzbogen-Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der der Kathode (6) zugewandte kegelstumpfförmige Endabschnitt (8c) der Anode (8) ein Plateau AP mit einem Durchmesser in mm besitzt, das der Relation 1,8 x L - 1 ≤ AP ≤ 1,8 x L + 1 genügt, wobei L der Abstand der einander zugewandten Endabschnitte (6a, 8c) von Kathode (6) und Anode (8) in mm ist. Short-arc high-pressure discharge lamp according to Claim 1, characterized in that the frustoconical end section (8c) of the anode (8) facing the cathode (6) has a plateau AP with a diameter in mm which corresponds to the relation 1.8 x L - 1 ≤ AP ≤ 1.8 x L + 1 is sufficient, where L is the distance in mm from the mutually facing end sections (6a, 8c) of the cathode (6) and anode (8). Kurzbogen-Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass die Spitze des kegelförmigen Endabschnitts (6a) der Kathode (6) als Halbkugel ausgebildet ist, wobei der Radius R der Halbkugel in mm der Relation 0,12 x P + 0,1 ≤ R ≤ 0,12 x P + 0,5 mit P als Lampenleistung in kW genügt.Short-arc high-pressure discharge lamp according to Claim 1, characterized in that the tip of the conical end section (6a) of the cathode (6) is designed as a hemisphere, the radius R of the hemisphere in mm of the relation 0.12 x P + 0.1 ≤ R ≤ 0.12 x P + 0.5 with P as lamp power in kW is sufficient. Kurzbogen-Hochdruckentladungslampe nach Anspruch 3, dadurch gekennzeichnet, dass der kegelförmige Endabschnitt (6a) der Kathode (6) einen Kegelwinkel α zwischen 36 und 44° besitzt.Short-arc high-pressure discharge lamp according to Claim 3, characterized in that the conical end section (6a) of the cathode (6) has a cone angle α between 36 and 44 °. Kurzbogen-Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der der Kathode (6) zugewandte kegelstumpfförmige Endabschnitt (8a) der Anode (8) einen Kegelwinkel β zwischen 90 und 105° besitzt.Short-arc high-pressure discharge lamp according to Claim 1, characterized in that the frustoconical end section (8a) of the anode (8) facing the cathode (6) has a cone angle β between 90 and 105 °. Verfahren zum Betreiben einer Kurzbogen-Hochdruckentladungslampe (1) gemäß einer oder mehrerer der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Kurzbogen-Hochdruckentladungslampe (1) bei einer Nennleistung P zwischen 0 und 5,5 kW mit einem Lampenstrom I in A der Relation 22 x P + 38 ≤ I ≤ 22 x P + 65 und bei einer Nennleistung P zwischen 5, 5 und 12 kW mit einem Lampenstrom I in A der Relation 10 x P + 100 ≤ I ≤ 22 x P + 65 betrieben wird. Method for operating a short-arc high-pressure discharge lamp (1) according to one or more of claims 1 to 5, characterized in that the short-arc high-pressure discharge lamp (1) at a nominal power P between 0 and 5.5 kW with a lamp current I in A of the relation 22 x P + 38 ≤ I ≤ 22 x P + 65 and with a nominal power P between 5, 5 and 12 kW with a lamp current I in A of the relation 10 x P + 100 ≤ I ≤ 22 x P + 65 is operated.
    EP01127159A 2000-12-20 2001-11-15 Short arc high pressure discharge lamp for use in digital projection techniques Expired - Lifetime EP1217644B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10063938A DE10063938A1 (en) 2000-12-20 2000-12-20 Short arc high pressure discharge lamp for digital projection techniques
    DE10063938 2000-12-20

    Publications (2)

    Publication Number Publication Date
    EP1217644A1 true EP1217644A1 (en) 2002-06-26
    EP1217644B1 EP1217644B1 (en) 2009-01-07

    Family

    ID=7668251

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01127159A Expired - Lifetime EP1217644B1 (en) 2000-12-20 2001-11-15 Short arc high pressure discharge lamp for use in digital projection techniques

    Country Status (8)

    Country Link
    US (1) US6573657B2 (en)
    EP (1) EP1217644B1 (en)
    JP (1) JP4261795B2 (en)
    KR (1) KR20020050177A (en)
    CN (1) CN1316550C (en)
    CA (1) CA2365357C (en)
    DE (2) DE10063938A1 (en)
    TW (1) TW527623B (en)

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2009121400A1 (en) * 2008-04-01 2009-10-08 Osram Gesellschaft mit beschränkter Haftung Method for producing a high-pressure discharge lamp, method for producing light using a high-pressure discharge lamp and digital video projector
    DE102010003381A1 (en) * 2010-03-29 2011-09-29 Osram Gesellschaft mit beschränkter Haftung A method for providing an AC gas discharge lamp, method for providing light by means of this AC gas discharge lamp and illumination device with this AC gas discharge lamp
    EP2390902A1 (en) * 2010-05-03 2011-11-30 Osram Gesellschaft mit Beschränkter Haftung Noble gas short arc discharge lamp

    Families Citing this family (16)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6578970B2 (en) * 2001-09-19 2003-06-17 Advanced Radiation Corporation Point-like lamp with anode chimney
    DE10209426A1 (en) * 2002-03-05 2003-09-18 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Short-arc high pressure discharge lamp
    JP4042605B2 (en) * 2003-03-31 2008-02-06 ウシオ電機株式会社 Xenon lamp
    JP4259282B2 (en) * 2003-11-07 2009-04-30 ウシオ電機株式会社 High pressure discharge lamp
    JP4556656B2 (en) * 2004-12-14 2010-10-06 ウシオ電機株式会社 Short arc type mercury lamp
    US20060175973A1 (en) * 2005-02-07 2006-08-10 Lisitsyn Igor V Xenon lamp
    WO2008074361A1 (en) * 2006-12-18 2008-06-26 Osram Gesellschaft mit beschränkter Haftung Electrode for a discharge lamp
    EP2201594A1 (en) * 2007-09-21 2010-06-30 Osram Gesellschaft mit beschränkter Haftung Direct-current discharge lamp
    DE102008062677A1 (en) 2008-12-17 2010-06-24 Osram Gesellschaft mit beschränkter Haftung discharge lamp
    JP4706779B2 (en) * 2008-12-19 2011-06-22 ウシオ電機株式会社 Super high pressure mercury lamp
    JP5276485B2 (en) * 2009-03-13 2013-08-28 株式会社オーク製作所 Short arc type discharge lamp
    DE102009054670A1 (en) 2009-12-15 2011-06-16 Osram Gesellschaft mit beschränkter Haftung Electrode i.e. anode, for use in e.g. xenon- or mercury-vapor short-arc lamp, has core extending in longitudinal direction and partially surrounded by cylindrical shell that is made of material, where material consists of carbon
    DE102010030992A1 (en) 2010-07-06 2012-01-12 Osram Gesellschaft mit beschränkter Haftung Short arc lamp discharge lamp
    JP6292431B2 (en) * 2012-08-24 2018-03-14 河北ライティングソリューションズ株式会社 Cathode for discharge lamp
    JP5812053B2 (en) * 2013-04-24 2015-11-11 ウシオ電機株式会社 Short arc type discharge lamp
    JP6361905B2 (en) * 2013-09-12 2018-07-25 河北ライティングソリューションズ株式会社 Cathode for discharge lamp

    Citations (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE2122122A1 (en) * 1970-05-11 1971-11-25 Westinghouse Electric Corp Short arc lamp
    DE3716485C1 (en) * 1987-05-16 1988-11-24 Heraeus Gmbh W C Xenon short-arc discharge lamp
    JPH07235281A (en) * 1994-02-23 1995-09-05 Toshiba Lighting & Technol Corp D.c. discharge lamp, semiconductor exposure device using this discharge lamp, and projection device
    EP0704881A2 (en) * 1994-09-27 1996-04-03 Ushiodenki Kabushiki Kaisha Discharge lamp
    JPH0997593A (en) * 1995-09-29 1997-04-08 Toshiba Lighting & Technol Corp Metal halide lamp, and its lighting device, projecting device, and projector device
    JPH0997595A (en) * 1995-09-29 1997-04-08 Toshiba Lighting & Technol Corp Metal halide lamp, lighting device, projecting device, and projector device
    JPH09153348A (en) * 1995-09-29 1997-06-10 Toshiba Lighting & Technol Corp Metal halide lamp, its lighting device, floodlight device and projector device
    EP0901151A1 (en) * 1997-09-04 1999-03-10 Matsushita Electronics Corporation High-pressure mercury vapor discharge lamp
    JPH11317200A (en) * 1998-04-30 1999-11-16 Toshiba Lighting & Technology Corp Discharge lamp, lamp device and liquid crystal projector
    EP0973187A1 (en) * 1998-07-14 2000-01-19 Ushiodenki Kabushiki Kaisha High pressure mercury lamp and emission device for a high pressure mercury lamp
    DE20005764U1 (en) 2000-03-30 2000-06-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Short arc lamp

    Patent Citations (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE2122122A1 (en) * 1970-05-11 1971-11-25 Westinghouse Electric Corp Short arc lamp
    DE3716485C1 (en) * 1987-05-16 1988-11-24 Heraeus Gmbh W C Xenon short-arc discharge lamp
    JPH07235281A (en) * 1994-02-23 1995-09-05 Toshiba Lighting & Technol Corp D.c. discharge lamp, semiconductor exposure device using this discharge lamp, and projection device
    EP0704881A2 (en) * 1994-09-27 1996-04-03 Ushiodenki Kabushiki Kaisha Discharge lamp
    JPH0997593A (en) * 1995-09-29 1997-04-08 Toshiba Lighting & Technol Corp Metal halide lamp, and its lighting device, projecting device, and projector device
    JPH0997595A (en) * 1995-09-29 1997-04-08 Toshiba Lighting & Technol Corp Metal halide lamp, lighting device, projecting device, and projector device
    JPH09153348A (en) * 1995-09-29 1997-06-10 Toshiba Lighting & Technol Corp Metal halide lamp, its lighting device, floodlight device and projector device
    EP0901151A1 (en) * 1997-09-04 1999-03-10 Matsushita Electronics Corporation High-pressure mercury vapor discharge lamp
    JPH11317200A (en) * 1998-04-30 1999-11-16 Toshiba Lighting & Technology Corp Discharge lamp, lamp device and liquid crystal projector
    EP0973187A1 (en) * 1998-07-14 2000-01-19 Ushiodenki Kabushiki Kaisha High pressure mercury lamp and emission device for a high pressure mercury lamp
    DE20005764U1 (en) 2000-03-30 2000-06-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Short arc lamp

    Non-Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 1996, no. 01 31 January 1996 (1996-01-31) *
    PATENT ABSTRACTS OF JAPAN vol. 1997, no. 08 29 August 1997 (1997-08-29) *
    PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31) *
    PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02 29 February 2000 (2000-02-29) *

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2009121400A1 (en) * 2008-04-01 2009-10-08 Osram Gesellschaft mit beschränkter Haftung Method for producing a high-pressure discharge lamp, method for producing light using a high-pressure discharge lamp and digital video projector
    DE102010003381A1 (en) * 2010-03-29 2011-09-29 Osram Gesellschaft mit beschränkter Haftung A method for providing an AC gas discharge lamp, method for providing light by means of this AC gas discharge lamp and illumination device with this AC gas discharge lamp
    EP2390902A1 (en) * 2010-05-03 2011-11-30 Osram Gesellschaft mit Beschränkter Haftung Noble gas short arc discharge lamp

    Also Published As

    Publication number Publication date
    CA2365357C (en) 2010-10-26
    KR20020050177A (en) 2002-06-26
    CA2365357A1 (en) 2002-06-20
    CN1360333A (en) 2002-07-24
    CN1316550C (en) 2007-05-16
    US6573657B2 (en) 2003-06-03
    TW527623B (en) 2003-04-11
    DE10063938A1 (en) 2002-07-04
    US20020074943A1 (en) 2002-06-20
    JP2002260589A (en) 2002-09-13
    EP1217644B1 (en) 2009-01-07
    JP4261795B2 (en) 2009-04-30
    DE50114638D1 (en) 2009-02-26

    Similar Documents

    Publication Publication Date Title
    EP1217644A1 (en) Short arc high pressure discharge lamp for use in digital projection techniques
    EP0314732B1 (en) Xenon short-arc discharge lamp
    DE10062974A1 (en) High pressure gas discharge lamp and process for its manufacture
    DE60120055T2 (en) Projector lamp and method for regulating its brightness
    DE19747803C2 (en) Metal halide lamp, this comprehensive lighting device and use of the latter
    WO1995001648A1 (en) Metal halide high-pressure discharge lamp
    DE2122122A1 (en) Short arc lamp
    EP0692139B1 (en) High-pressure metal-halide discharge lamp for fitting in optical systems
    DE102009022266B4 (en) Xenon lamp with conductive film on the discharge vessel
    EP2147456B8 (en) High-pressure discharge lamp and vehicle headlight with high-pressure discharge lamp
    EP0741908A1 (en) Metal halide gas discharge lamp for projection purposes
    EP0477668B1 (en) High pressure metal halide discharge lamp
    DE19951445C1 (en) Mercury short-arc lamp for exposure system, has specific diameter relation between head and rod of electrode and specific angle between longitudinal axis of electrode and imaginary auxiliary line
    DE60029750T2 (en) HIGH PRESSURE DISCHARGE LAMP
    EP1118099A1 (en) Dimmable discharge lamp for dielectrically impeded discharges
    EP0383108A1 (en) High-pressure discharge lamp for operation with an alternating current
    EP2499651B1 (en) High-pressure discharge lamp having a single socket
    DE2248132A1 (en) FLASH TUBE
    DE102013107327A1 (en) Mercury lamp of the short arc type
    DE102011016363A1 (en) Short-arc discharge lamp
    EP1271612A2 (en) High pressure discharge lamp
    EP1709668A1 (en) Low-pressure discharge lamp
    WO2005101454A2 (en) High-pressure discharge lamp and associated lighting element
    DE19548518A1 (en) Metal halide discharge lamp for projection purposes
    DE102010039572A1 (en) DC discharge lamp with asymmetrical piston

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    17P Request for examination filed

    Effective date: 20020722

    AKX Designation fees paid

    Designated state(s): BE DE FR GB IT NL

    17Q First examination report despatched

    Effective date: 20070824

    GRAP Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOSNIGR1

    GRAS Grant fee paid

    Free format text: ORIGINAL CODE: EPIDOSNIGR3

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): BE DE FR GB IT NL

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REF Corresponds to:

    Ref document number: 50114638

    Country of ref document: DE

    Date of ref document: 20090226

    Kind code of ref document: P

    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    26N No opposition filed

    Effective date: 20091008

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R081

    Ref document number: 50114638

    Country of ref document: DE

    Owner name: OSRAM GMBH, DE

    Free format text: FORMER OWNER: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG, 81543 MUENCHEN, DE

    Effective date: 20111128

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R081

    Ref document number: 50114638

    Country of ref document: DE

    Owner name: OSRAM GMBH, DE

    Free format text: FORMER OWNER: OSRAM AG, 81543 MUENCHEN, DE

    Effective date: 20130205

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R081

    Ref document number: 50114638

    Country of ref document: DE

    Owner name: OSRAM GMBH, DE

    Free format text: FORMER OWNER: OSRAM GMBH, 81543 MUENCHEN, DE

    Effective date: 20130822

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 15

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 16

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 17

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: NL

    Payment date: 20181120

    Year of fee payment: 18

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: IT

    Payment date: 20181126

    Year of fee payment: 18

    Ref country code: FR

    Payment date: 20181121

    Year of fee payment: 18

    Ref country code: GB

    Payment date: 20181120

    Year of fee payment: 18

    Ref country code: BE

    Payment date: 20181120

    Year of fee payment: 18

    REG Reference to a national code

    Ref country code: NL

    Ref legal event code: MM

    Effective date: 20191201

    REG Reference to a national code

    Ref country code: BE

    Ref legal event code: MM

    Effective date: 20191130

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20191115

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20191201

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20191115

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20191130

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20191115

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20191130

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20201119

    Year of fee payment: 20

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R071

    Ref document number: 50114638

    Country of ref document: DE