EP0492205B1 - Lampe à décharge à haute pression à halogénure métallique - Google Patents

Lampe à décharge à haute pression à halogénure métallique Download PDF

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Publication number
EP0492205B1
EP0492205B1 EP91120910A EP91120910A EP0492205B1 EP 0492205 B1 EP0492205 B1 EP 0492205B1 EP 91120910 A EP91120910 A EP 91120910A EP 91120910 A EP91120910 A EP 91120910A EP 0492205 B1 EP0492205 B1 EP 0492205B1
Authority
EP
European Patent Office
Prior art keywords
metal halide
vessel
discharge lamp
lamp according
pressure metal
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
EP91120910A
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German (de)
English (en)
Other versions
EP0492205A2 (fr
EP0492205A3 (en
Inventor
Andreas Dr. Genz
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.)
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Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0492205A2 publication Critical patent/EP0492205A2/fr
Publication of EP0492205A3 publication Critical patent/EP0492205A3/de
Application granted granted Critical
Publication of EP0492205B1 publication Critical patent/EP0492205B1/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
    • H01J61/12—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

Definitions

  • the invention relates to a metal halide high-pressure discharge lamp according to the preamble of claim 1.
  • Metal halide high-pressure discharge lamps of this type are used in particular in lighting systems for stage, film and television, where light with color temperatures between 4000 and 9000 K and very good color rendering is required in all color temperature ranges. Recently, these lamps have also been used in projection technology and effect lighting.
  • EP-A-0 391 283 discloses a high pressure metal halide discharge lamp with a filling which, in addition to an inert gas and mercury, contains bromides of the elements Dy, Tm, Tl, Cs and additionally ThJ 4 , where Th can be replaced by Hf. With this filling, a color temperature of 5600 K and a color rendering index of 92 are achieved.
  • the object of the invention is to provide a metal halide high-pressure discharge lamp which emits radiation with a color temperature between 4000 and 9000 K and a general color rendering index Ra of greater than 90, the color rendering index R 9 in particular reaching values of 50 and more for the red spectral range.
  • the color rendering can be further improved, values between 50 and 98 being achieved for the red rendering index R 9, depending on the lamp type.
  • the general color rendering index Ra always has values of over 90.
  • the lamp bulb when the lamps are operated on a dimmer, the lamp bulb no longer shows any blackening.
  • the color rendering index no longer drops with decreasing performance, so that good color rendering values are also achieved here.
  • the hafnium and / or zirconium increases the burning voltage, which makes it possible to shorten the electrode spacing with the same mercury dosage in order to obtain higher luminance levels.
  • the lamps with essentially only hafnium and / or zirconium filling have reduced devitrification.
  • the discharge vessel contains 0.02 to 6 mg hafnium per ml of the vessel volume.
  • the filling should advantageously contain 0.01 to 4 mg of this metal per ml of the vessel volume.
  • Iodine and bromine in a molar ratio between 0.2 and 5 are advantageously used as halogens.
  • the discharge vessel should also contain cesium in an amount of up to 4 mg per ml of the vessel volume.
  • the discharge vessel can additionally contain one or more rare earth metals as well as nickel and / or cobalt.
  • the discharge vessel 2 made of quartz glass has a spherical shape and has a neck 3, 4 at each of two diametrically opposite points, into which pin-shaped tungsten electrodes 5, 6 are melted by means of sealing foils 7, 8 made of molybdenum. The ends of the sealing foils 7, 8 facing away from the discharge space are welded to power supply lines 9, 10.
  • Table 1 below shows two different fillings of the discharge vessel 2 of a 400 W lamp, one with hafnium and one with zirconium, as well as the photometric data obtained with the respective fill.
  • FIG. 2 shows a metal halide high-pressure discharge lamp 13 according to the invention which has a base on two sides and has a power consumption of 575 W.
  • the discharge vessel 14 made of quartz glass has an essentially spherical shape and has a neck 15, 16 at two diametrically opposite locations. In each of these necks 15, 16, a pin electrode 17, 18 made of tungsten is melted in a gas-tight manner via a molybdenum sealing film 19, 20.
  • the sealing foils 19, 20 are electrically connected to a base of the type SFc 10-4, the base sleeve 21, 22 of which is attached to the free end of each neck 15, 16.
  • a threaded pin 23, 24 is welded onto the base sleeve 21, 22, on which in turn a knurled nut 25, 26 is screwed.
  • the electrical connection to the mains or ballast is established by connecting cables which are clamped between the base sleeve 21, 22 and the knurled nut 25, 26.
  • Table 2 below shows two different fillings of the discharge vessel for a 575 W lamp, one with hafnium and one with zirconium as well as the lighting data of the lamps.
  • Table 2 Filling 3 Filling 4 J 2 0.90 mg 0.90 mg Br 2 0.60 mg 0.60 mg Cs 0.30 mg 0.30 mg Dy 0.40 mg 0.40 mg Hf 0.40 mg --- Zr --- 0.20 mg Co 0.05 mg 0.07 mg Ed 42 mg 46 mg Ar 400 mbar 400 mbar Power consumption 575 W. 575 W.
  • Discharge tube volume 2.60 ml 2.60 ml Electrode gap 6 mm 6 mm Burning voltage 100 V 100 V Color temperature 5600 K. 5600 K. Luminous efficacy 81 lm / W 81 lm / W Color rendering index Ra 94 95 Red rendering index R 9 65 75 lifespan 750 h 750 h
  • FIG. 3 shows a metal halide high-pressure discharge lamp 27 according to the invention with a power consumption of 4000 W.
  • the lamp 27 consists of an ellipsoidal discharge vessel 28 made of quartz glass, at the two ends of which lie in the axis, a neck 29, 30 made of quartz glass is melted on.
  • a molybdenum sealing film 31, 32 is melted into each of the necks 29, 30, a pin-shaped electrode 33, 34 being provided on the end of the film 31, 32 facing the discharge vessel is welded from tungsten.
  • the other ends of the sealing film 31, 32 are electrically connected to the bases 35, 36 of the type SFa 21-12, which are placed over the free ends of the necks 29, 30 and fastened by means of putty.
  • Table 3 shows two different fillings of the discharge vessel of a 4000 W lamp, one with hafnium and one with zirconium, as well as the lighting data of the lamps.
  • Table 3 Filling 5 Filling 6 J 2 1.30 mg 1.30 mg Br 2 2.30 mg 2.30 mg Cs 1.20 mg 1.20 mg Dy 0.95 mg 1.10 mg DG 0.55 mg 0.40 mg Hf 0.27 mg --- Zr --- 0.14 mg Ed 235 mg 220 mg Ar 400 mbar 400 mbar Power consumption 4000 W 4000 W Discharge tube volume 24.5 ml 24.5 ml Electrode gap 20 mm 20 mm Burning voltage 200 V 200 V Color temperature 6000 K. 6000 K. Luminous efficacy 102 lm / W 102 lm / W Color rendering index Ra 96 98 Red rendering index R 9 92 95 lifespan 500 h 500 h

Landscapes

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

Claims (7)

  1. Lampe (1,13,27) à décharge à haute pression à halogénure métallique, comprenant une enceinte de décharge (2,14,28) en un matériau transparent et résistant aux hautes températures, deux électrodes (5,6,17,18,33,34) résistantes aux hautes températures et une atmosphère constituée essentiellement de mercure, d'au moins un gaz rare, de césium ainsi que d'halogénures métalliques, la lampe (1,13,27) contenant pour produire de la lumière ayant une température de couleurs comprise entre 4000 et 9000 K, un indice Ra général de rendu des couleurs supérieur à 90 et un indice R9 de rendu des couleurs pour le domaine rouge du spectre d'au moins 50, sensiblement seulement de l'hafnium et/ou du zirconium ainsi que le cas échéant, en plus, un ou plusieurs métal de terres rares et/ou du nickel et/ou du cobalt, comme métaux des halogénures métalliques.
  2. Lampe à décharge à haute pression à halogénures métalliques suivant la revendication 1, caractérisée en ce que l'enceinte (2,14,28) de décharge contient de l'hafnium en une quantité de 0,02 à 6,0 mg par ml du volume de l'enceinte.
  3. Lampe à décharge à haute pression à halogénures métalliques suivant la revendication 1, caractérisée en ce que l'enceinte (2,14,28) de décharge contient du zirconium en une quantité de 0,01 à 4,0 mg par ml du volume de l'enceinte.
  4. Lampe à décharge à haute pression à halogénures métalliques suivant la revendication 1, caractérisée en ce que l'enceinte (2,14,28) de décharge contient, comme halogènes, des composés halogénés, de l'iode et du brome en un rapport molaire compris entre 0,2 et 5.
  5. Lampe à décharge à haute pression à halogénures métalliques suivant la revendication 1, caractérisée en ce que l'enceinte (2,14,28) de décharge contient du césium en une quantité allant jusqu'à 4 mg par ml du volume de l'enceinte.
  6. Lampe à décharge à haute pression à halogénures métalliques suivant la revendication 1, caractérisée en ce que l'enceinte (14,28) de décharge contient, en plus, des métaux de terres rares en une quantité allant jusqu'à 6 mg par ml du volume de l'enceinte.
  7. Lampe à décharge à haute pression à halogénures métalliques suivant la revendication 1, caractérisée en ce que l'enceinte (14) de décharge contient, en plus, du cobalt et/ou du nickel en une quantité de 0,01 à 0,2 mg par ml du volume de l'enceinte.
EP91120910A 1990-12-20 1991-12-05 Lampe à décharge à haute pression à halogénure métallique Expired - Lifetime EP0492205B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4040858A DE4040858A1 (de) 1990-12-20 1990-12-20 Metallhalogenid-hochdruckentladungslampe
DE4040858 1990-12-20

Publications (3)

Publication Number Publication Date
EP0492205A2 EP0492205A2 (fr) 1992-07-01
EP0492205A3 EP0492205A3 (en) 1992-12-30
EP0492205B1 true EP0492205B1 (fr) 1996-10-30

Family

ID=6420828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120910A Expired - Lifetime EP0492205B1 (fr) 1990-12-20 1991-12-05 Lampe à décharge à haute pression à halogénure métallique

Country Status (4)

Country Link
US (1) US5323085A (fr)
EP (1) EP0492205B1 (fr)
JP (1) JP3171895B2 (fr)
DE (2) DE4040858A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8569952B2 (en) 2008-11-06 2013-10-29 Osram Gesellschaft Mit Beschraenkter Haftung Ceramic metal halide lamp having a high color temperature

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5382873A (en) * 1991-12-04 1995-01-17 U.S. Philips Corporation High-pressure discharge lamp with incandescing metal droplets
JP2511393B2 (ja) * 1992-09-15 1996-06-26 パテント−トロイハント−ゲゼルシヤフト フユア エレクトリツシエ グリユーランペン ミツト ベシユレンクテル ハフツング メタルハライドランプ
DE4310539A1 (de) * 1993-03-31 1994-10-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenid-Hochdruckentladungslampe für den Einbau in optische Systeme
KR950001852A (ko) * 1993-06-01 1995-01-04 에프.제이.스미트 고압금속 할로겐 램프
US5451838A (en) * 1994-03-03 1995-09-19 Hamamatsu Photonics K.K. Metal halide lamp
DE4432611A1 (de) 1994-09-14 1996-03-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenid-Hochdruckentladungslampe
US6301371B1 (en) * 1995-08-21 2001-10-09 Mark F. Jones Object identification system applications
DE59805403D1 (de) * 1997-04-21 2002-10-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenid-entladungslampe mit langer lebensdauer
DE29905662U1 (de) * 1999-03-26 2000-08-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München Metallhalogenid-Entladungslampe mit langer Lebensdauer
JP4366567B2 (ja) * 2003-05-09 2009-11-18 ウシオ電機株式会社 高圧放電灯及びその製造方法
DE102005026208A1 (de) 2005-06-07 2006-12-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metallhalogenid-Hochdruckentladungslampe
US7486026B2 (en) * 2006-11-09 2009-02-03 General Electric Company Discharge lamp with high color temperature
WO2010109385A1 (fr) 2009-03-27 2010-09-30 Koninklijke Philips Electronics N.V. Projecteur à effet « gobo » et tête mobile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521110A (en) * 1967-09-25 1970-07-21 Gen Electric Mercury-metallic halide vapor lamp with regenerative cycle
EP0391283A2 (fr) * 1989-04-04 1990-10-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression à double culot
EP0545476A1 (fr) * 1991-12-04 1993-06-09 Koninklijke Philips Electronics N.V. Lampe à décharge à haute pression

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575630A (en) * 1968-05-15 1971-04-20 Westinghouse Electric Corp High pressure mercury vapor discharge lamp containing zirconium iodide
DE2114804B2 (de) * 1971-03-26 1978-09-14 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen Quecksilberdampf-Hochdruckentladungslampe mit Zusatz von Halogeniden der Seltenen Erden
JPS568468B2 (fr) * 1973-07-04 1981-02-24
JPS5231583A (en) * 1975-09-05 1977-03-10 Toshiba Corp Lamp discharging metallic fumes
JPS5725665A (en) * 1980-07-24 1982-02-10 Toshiba Corp Metal halide lamp
JPS59167948A (ja) * 1983-03-15 1984-09-21 Mitsubishi Electric Corp 高圧金属蒸気放電灯

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521110A (en) * 1967-09-25 1970-07-21 Gen Electric Mercury-metallic halide vapor lamp with regenerative cycle
EP0391283A2 (fr) * 1989-04-04 1990-10-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression à double culot
EP0545476A1 (fr) * 1991-12-04 1993-06-09 Koninklijke Philips Electronics N.V. Lampe à décharge à haute pression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8569952B2 (en) 2008-11-06 2013-10-29 Osram Gesellschaft Mit Beschraenkter Haftung Ceramic metal halide lamp having a high color temperature

Also Published As

Publication number Publication date
DE4040858A1 (de) 1992-06-25
EP0492205A2 (fr) 1992-07-01
EP0492205A3 (en) 1992-12-30
DE59108315D1 (de) 1996-12-05
JPH04294048A (ja) 1992-10-19
US5323085A (en) 1994-06-21
JP3171895B2 (ja) 2001-06-04

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