EP0702394B1 - Lampe à décharge haute pression à halogénure métallique - Google Patents

Lampe à décharge haute pression à halogénure métallique Download PDF

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Publication number
EP0702394B1
EP0702394B1 EP95112860A EP95112860A EP0702394B1 EP 0702394 B1 EP0702394 B1 EP 0702394B1 EP 95112860 A EP95112860 A EP 95112860A EP 95112860 A EP95112860 A EP 95112860A EP 0702394 B1 EP0702394 B1 EP 0702394B1
Authority
EP
European Patent Office
Prior art keywords
filling
lamp according
discharge vessel
halides
hand
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.)
Expired - Lifetime
Application number
EP95112860A
Other languages
German (de)
English (en)
Other versions
EP0702394A2 (fr
EP0702394A3 (fr
Inventor
Hans Dr. Eisemann
Andreas Dr. Genz
Andreas Dr. Hohlfeld
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 EP0702394A2 publication Critical patent/EP0702394A2/fr
Publication of EP0702394A3 publication Critical patent/EP0702394A3/fr
Application granted granted Critical
Publication of EP0702394B1 publication Critical patent/EP0702394B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/26—Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/14—Selection of substances for gas fillings; Specified operating pressure or temperature having one or more carbon compounds as the principal constituents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827—Metal halide arc lamps
    • 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

Definitions

  • the discharge tubes of the lamps are usually sealed on two sides, e.g. by means of Contusions or melts and surrounded by an outer bulb. It However, versions sealed on one side are also possible.
  • EP-A 0 391 283 discloses a metal halide high-pressure discharge lamp without an outer bulb for optical applications, which is also suitable for outdoor lighting.
  • the power consumption is in the range between approx. 1000 W and 4000 W, with wall loads in the order of 30 W to 60 W per cm 2 wall area of the discharge vessel and specific arc powers of approx. 67 W / mm.
  • the discharge vessel contains a filling of argon (Ar) and mercury (Hg) and per cm 3 discharge volume the rare earth metals (SE) dysprosium bromide (DyBr 3 , 1 ⁇ mol) and thulium bromide (TmBr 3 , 0.5 ⁇ mol), as well as 1 ⁇ mol thallium bromide (TlBromide) , 2 ⁇ mol cesium bromide (CsBr) and 0.5 ⁇ mol thorium iodide (ThJ 4 ).
  • the thorium (Th) can be replaced by hafnium (Hf).
  • EP-A 0 492 205 discloses a metal halide metal halide high-pressure discharge lamp for optical applications. Typical power levels are 400W, 575 W and 4000 W, with arc powers from approx. 95 W to 200 W per mm arc length.
  • the disadvantage is the short lifespan of only approx. 300 h.
  • Another filling system uses cobalt (Co) and / or dysprosium (Dy) and gadolinium (Gd). However, the service life is only approx. 500 h.
  • the invention has for its object to eliminate the disadvantages mentioned and to provide a metal halide high-pressure discharge lamp which has a color temperature between 4000 K and 7000 K, a color rendering index R a ⁇ 90 and at the same time a long service life (at least 1000 h).
  • the discharge vessel contains an ionizable filling, consisting of at least one inert gas, mercury, at least one halogen and the following elements to form corresponding halides: Tl, Cs, Hf, where the Hf can be replaced in whole or in part by Zr and the two or one of the two rare earth metals (SE) Dy and / or Gd. I and / or Br are preferably used as halogens for the formation of the halides.
  • the inert gas for example Ar with a typical filling pressure in the order of up to approx. 40 kPa, is used to ignite the discharge.
  • the desired operating voltage is set by Hg and is typically in the range between approx. 4 mg and 25 mg per cm 3 of vessel volume for operating voltages between 120 V and 95 V.
  • the molar ratio between the filling fraction of Hf or Zr on the one hand and the Filling share of Dy or the sum of the filling shares of SE Dy and Gd on the other hand is at least 0.35.
  • the molar ratio is preferably in the range between 0.5 and 1.5.
  • the ratio is preferred for high wall loads in the range between 1 and 2.5
  • Hf (or Zr): Cs at least 0.35 for high Wall loads, the ratio is preferably in the range between 0.5 and 1.
  • Das Molar ratio between the filling fraction of Hf or Zr on the one hand and the sum the filling proportions of the SE (i.e. Dy and / or Gd) as well as Tl and Cs on the other is at least 0.14, the ratio is preferred for high wall loads in the range between 0.2 and 0.5.
  • the molar filling quantity of Hf or Zr is in the range between 0.005 ⁇ mol and 35 ⁇ mol, preferably in the range between 0.05 ⁇ mol and 5 ⁇ mol per cm 3 of the volume of the discharge vessel.
  • the filling quantities of Cs, Tl, Dy and possibly Gd are up to 30 ⁇ mol, up to 15 ⁇ mol, up to 30 ⁇ mol or up to 0.6 ⁇ mol per cm 3 of the vessel volume.
  • the 150 W high-pressure discharge lamp 1 shown schematically in FIG. 1 consists of a discharge vessel 2 made of quartz glass, which is squeezed on both sides and is enclosed by an evacuated outer bulb 3 which is base on both sides.
  • the electrodes 4, 5, which are opposite each other at a distance of 10 mm, are melted in a gas-tight manner into the discharge vessel 2 by means of foils 6, 7 made of molybdenum, and via the current leads 8, 9, the sealing foils 10, 11 of the outer bulb 3 and via further short current leads with the electrical ones Connections of the ceramic base (R7s) 12, 13 connected.
  • a getter material 14 applied to a metal plate is additionally melted potential-free via a piece of wire.
  • the ends 15, 16 of the discharge vessel 2 are provided with a heat-reflecting coating.
  • the volume of the discharge vessel is approximately 1.8 cm 3 .
  • the filling contains 23 mg Hg and 14 kPa Ar as the base gas.
  • the discharge vessel 2 contains the metal halides listed in Table 1a below.
  • the resulting respective molar ratios between Hf and Zr on the one hand and Cs, Tl, Dy and the sum of the proportions of Cs, Tl and Dy on the other are given in Table 1b.
  • the specific arc power and the operating voltage are 15 W per mm arc length or 105 V.
  • Table 1c shows the lighting values achieved. Two metal halide compositions of the lamp from FIG. 1.
  • FIG. 2 An embodiment of a 400 W lamp is shown schematically in Figure 2.
  • the discharge vessel is squeezed on two sides 2, which is enclosed by a cylindrical evacuated outer bulb 3 made of tempered glass which is capped on one side.
  • One end of the outer bulb 3 has a rounded crest 17, whereas the other end has a screw base 12 having.
  • a holding frame 18 fixes the discharge vessel 2 axially inside the Outer bulb 3.
  • the holding frame 18 consists of two in a manner known per se Lead wires, one of which is connected to the power supply 8 near the base Discharge vessel is connected.
  • the other lead wire is over a solid one Metal support wire, which extends along the discharge vessel 2, for the base remote Power supply 9 is guided.
  • It also has a guide element on the base near the base End 15 of the discharge vessel (in the form of a stamped sheet) and a support near the top 17 in the form of a pitch circle.
  • the ends 15, 16 of the discharge vessel 2 are provided with a heat-reflecting covering.
  • the filling contains 60 mg Hg and 8 kPa Ar as the base gas.
  • the discharge vessel 2 contains the metal halides listed in Table 2a below.
  • the resulting respective molar ratios between Hf on the one hand and Cs, Tl, Dy and the sum of the proportions of Cs, Tl and Dy on the other are given in Table 2b.
  • the electrode spacing and the volume of the discharge vessel are 30 mm and approx. 14.5 cm 3 .
  • the arc power and the burning voltage are 15 W per mm arc length or 120 V.
  • Table 2c shows the lighting values achieved.
  • Figure 3 shows a 575 W lamp 1 in a schematic representation. It consists of one discharge vessel 2, sealed on two sides, made of quartz glass, which is surrounded by a cylindrical, evacuated outer bulb 3 is enclosed on one side. One end of the Outer bulb 3 has a rounded tip 17, whereas the other end has a pinch seal and is cemented into a plug base 19.
  • the in The electrodes 4, 5 are 7 mm apart and are separated by means of foils 6.7 melted from molybdenum gas-tight into the discharge vessel 2.
  • the Power leads 8,9 are each with the first ends of two solid lead wires 20, 21 connected. The second ends of the lead wires 20, 21 are in the Squeezed foot of the outer bulb 3, whereby the discharge vessel 2 axially in Inside the outer bulb 3 is fixed. By means of the sealing foils 22, 23 of the foot and the lead wires 20, 21 are connected to the electrical connections 24, 25 of the plug base 19 connected.
  • One in socket 19 mica plate 26 arranged between the connections 24, 25 serves for the electrical Insulation.
  • the filling contains 60 mg Hg and 22 kPa Ar as the base gas.
  • the discharge vessel 2 contains the metal halides listed in Table 3a below.
  • the electrode spacing and the volume of the discharge vessel are 7 mm and approx. 3.5 cm 3, respectively.
  • the arc power and the burning voltage are 82 W per mm arc length or 95 V.
  • Table 3c shows the lighting values achieved. Two metal halide compositions of the lamp from FIG. 3.

Landscapes

  • Discharge Lamp (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (21)

  1. Lampe à décharge à haute pression aux halogénures métalliques, comportant une enceinte de décharge, deux électrodes et une atmosphère ionisable, constituée d'au moins un gaz inerte, de mercure, d'au moins un halogène et des éléments suivants pour la formation d'halogénures: Tl, Cs, Hf, Hf pouvant être remplacé en partie ou totalement par Zr, ainsi que des deux métaux des terres rares (SE) Dy et/ou Gd ou de l'un d'entre eux.
  2. Lampe suivant la revendication 1, caractérisée en ce que le rapport molaire entre la proportion de Hf et/ou de Zr dans l'atmosphère, d'une part, et la somme des proportions des métaux des terres rares dans l'atmosphère, d'autre part, est d'au moins 0,35.
  3. Lampe suivant la revendication 2, caractérisée en ce que le rapport molaire est de préférence entre 0,5 et 1,5.
  4. Lampe suivant la revendication 1, caractérisée en ce que le rapport molaire entre la proportion de Hf et/ou de Zr dans l'atmosphère, d'une part, et la somme des proportions des métaux des terres rares, de Tl et de Cs dans l'atmosphère, d'autre part, est d'au moins 0,14.
  5. Lampe suivant la revendication 4, caractérisée en ce que le rapport molaire est de préférence compris entre 0,2 et 0,5.
  6. Lampe suivant la revendication 1, caractérisée en ce que le rapport molaire entre la proportion de Hf et/ou de Zr dans l'atmosphère, d'une part, et la proportion de Tl dans l'atmosphère, d'autre part, est d'au moins 0,65.
  7. Lampe suivant la revendication 6, caractérisée en ce que le rapport molaire est de préférence entre 1 et 2,5.
  8. Lampe suivant la revendication 1, caractérisée en ce que le rapport molaire entre la proportion de Hf et/ou de Zr dans l'atmosphère, d'une part, et la proportion de Cs dans l'atmosphère, d'autre part, est d'au moins 0,35.
  9. Lampe suivant la revendication 8, caractérisée en ce que le rapport molaire est de préférence entre 0,5 et 1.
  10. Lampe suivant la revendication 1, caractérisée en ce que la quantité des halogénures de Hf et/ou de Zr est dans l'intervalle compris entre 0,005 µmole et 35 µmole par cm3 du volume de l'enceinte de décharge.
  11. Lampe suivant la revendication 10, caractérisée en ce que la quantité des halogénures de Hf et/ou de Zr est de préférence dans l'intervalle compris entre 0,05 µmole et 5 µmole par cm3 du volume de l'enceinte de décharge.
  12. Lampe suivant la revendication 1, caractérisée en ce que la quantité des halogénures de Cs va jusqu'à 30 µmole par cm3 du volume de l'enceinte de décharge.
  13. Lampe suivant la revendication 1, caractérisée en ce que la quantité des halogénures de Tl va jusqu'à 15 µmole par cm3 du volume de l'enceinte de décharge.
  14. Lampe suivant la revendication 1, caractérisée en ce que la quantité des halogénures de Dy va jusqu'à 30 µmole par cm3 du volume de l'enceinte de décharge.
  15. Lampe suivant la revendication 1, caractérisée en ce que la quantité des halogénures de Gd est dans l'intervalle compris entre 0 µmole et 0,6 µmole par cm3 du volume de l'enceinte de décharge.
  16. Lampe suivant la revendication 1, caractérisée en ce que l'on utilise comme halogène pour la formation d'halogénures de l'iode et/ou du brome.
  17. Lampe suivant la revendication 1, caractérisée en ce que l'enceinte de décharge est montée à l'intérieur d'une ampoule extérieure à embase d'un seul côté ou des deux côtés.
  18. Lampe suivant la revendication 17, caractérisée en ce qu'il est fait le vide dans la région comprise entre l'enceinte de décharge et l'ampoule extérieure.
  19. Lampe suivant la revendication 17, caractérisée en ce que la région comprise entre l'enceinte de décharge et l'ampoule extérieure contient une atmosphère gazeuse.
  20. Lampe suivant la revendication 19, caractérisée en ce que l'atmosphère gazeuse est constituée de jusqu'à 70 kPa de N2.
  21. Lampe suivant la revendication 19, caractérisée en ce que l'atmosphère gazeuse est constituée de jusqu'à 40 kPa de CO2.
EP95112860A 1994-09-14 1995-08-16 Lampe à décharge haute pression à halogénure métallique Expired - Lifetime EP0702394B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4432611A DE4432611A1 (de) 1994-09-14 1994-09-14 Metallhalogenid-Hochdruckentladungslampe
DE4432611 1994-09-14

Publications (3)

Publication Number Publication Date
EP0702394A2 EP0702394A2 (fr) 1996-03-20
EP0702394A3 EP0702394A3 (fr) 1998-04-29
EP0702394B1 true EP0702394B1 (fr) 2000-01-05

Family

ID=6528114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112860A Expired - Lifetime EP0702394B1 (fr) 1994-09-14 1995-08-16 Lampe à décharge haute pression à halogénure métallique

Country Status (4)

Country Link
EP (1) EP0702394B1 (fr)
JP (1) JPH0896748A (fr)
CA (1) CA2156472A1 (fr)
DE (2) DE4432611A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ335289A (en) * 1996-10-18 2000-07-28 Walter Wadey & Company Pty Ltd Flood light or luminaire construction with at least three part parabolic sections with common focal line
DE19645959A1 (de) * 1996-11-07 1998-05-14 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenid-Hochdruckentladungslampe
WO2001095368A1 (fr) * 2000-06-07 2001-12-13 Koninklijke Philips Electronics N.V. Lampe a decharge haute pression
CN1860582A (zh) * 2004-03-12 2006-11-08 松下电器产业株式会社 金属蒸汽放电灯及其制造方法、以及带反射器的灯
DE102004019185A1 (de) 2004-04-16 2005-11-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe
WO2007085985A1 (fr) * 2006-01-25 2007-08-02 Koninklijke Philips Electronics N.V. Lampe à décharge de gaz à basse pression tld
US7486026B2 (en) 2006-11-09 2009-02-03 General Electric Company Discharge lamp with high color temperature
US20100117533A1 (en) * 2007-04-13 2010-05-13 Koninklijke Philips Electronics N.V. Discharge lamp comprising a monoxide radiation emitting material
WO2008126020A2 (fr) * 2007-04-13 2008-10-23 Koninklijke Philips Electronics N.V. Lampe à décharge comprenant un matériau émettant un rayonnement monoxyde ainsi qu'un matériau non métallique
WO2008126021A2 (fr) * 2007-04-13 2008-10-23 Koninklijke Philips Electronics N.V. Lampe à décharge comprenant des électrodes et une matière émettant un rayonnement provenant d'un monoxyde
JP5074248B2 (ja) 2008-03-14 2012-11-14 株式会社オーク製作所 エキシマランプ
JP2012522331A (ja) 2009-03-27 2012-09-20 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ゴーボープロジェクター及び移動するヘッド
DE102010038537A1 (de) 2010-07-28 2012-02-02 Osram Ag Hochdruckentladungslampe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761758A (en) * 1972-01-27 1973-09-25 Gte Sylvania Inc Metal halide lamp containing mercury, light emitting metal, sodium and another alkali metal
DE3910878A1 (de) 1989-04-04 1990-10-11 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Zweiseitig gesockelte hochdruckentladungslampe
DE8912495U1 (fr) * 1989-04-04 1990-01-11 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
DE4040858A1 (de) 1990-12-20 1992-06-25 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenid-hochdruckentladungslampe

Also Published As

Publication number Publication date
JPH0896748A (ja) 1996-04-12
DE59507563D1 (de) 2000-02-10
DE4432611A1 (de) 1996-03-21
EP0702394A2 (fr) 1996-03-20
EP0702394A3 (fr) 1998-04-29
CA2156472A1 (fr) 1996-03-15

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