EP0692139B1 - Lampe a decharge sous haute pression, a halogenure metallique, destinee au montage dans des systemes optiques - Google Patents

Lampe a decharge sous haute pression, a halogenure metallique, destinee au montage dans des systemes optiques Download PDF

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Publication number
EP0692139B1
EP0692139B1 EP94911079A EP94911079A EP0692139B1 EP 0692139 B1 EP0692139 B1 EP 0692139B1 EP 94911079 A EP94911079 A EP 94911079A EP 94911079 A EP94911079 A EP 94911079A EP 0692139 B1 EP0692139 B1 EP 0692139B1
Authority
EP
European Patent Office
Prior art keywords
metal
discharge lamp
dysprosium
lamp according
pressure discharge
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
EP94911079A
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German (de)
English (en)
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EP0692139A1 (fr
Inventor
Andreas 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.)
Filing date
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Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0692139A1 publication Critical patent/EP0692139A1/fr
Application granted granted Critical
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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
    • 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
    • H01J61/02—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 with a medium bow performance between 60 and 140 W / mm arc length for the Installation in optical systems according to the generic term of claim 1.
  • Metal halide high-pressure discharge lamps of this type are used in particular in projection (slide, overhead, narrow film and cinema projection) and glass fiber lighting systems (endoscopy, microscopy, effect lighting for film and television), where light with color temperatures between 4000 and 7000 K and good or very good color rendering is required in all color temperature ranges. They are characterized by a very short arc (a few mm) and maximum luminance (on average a few 10 kcd / cm 2 ), which makes them ideal for installation in reflectors or other optical imaging systems.
  • EP 0 386 601 describes a metal halide discharge lamp for reprography and projection disclosed.
  • the electrode spacing and the electrical power consumption is 5 mm or 100 W. indicated, from which an average arc power of 20 W per mm arc length results.
  • the discharge vessel the lamp contains mercury, zinc, indium, Lithium, thallium, a halogen and a rare earth metal such as. Lanthanum, or scandium Dysprosium.
  • U.S. Patent 4,229,673 is a metal halide discharge lamp disclosed with an outer bulb.
  • an electrode distance of 43 mm is specified, corresponding to an average arc output of almost 10 W per mm arc length.
  • the discharge vessel the lamp contains mercury, neodymium iodide and Cesium iodide and optionally additional sodium iodide.
  • For installation in optical systems Lamp due to its outer bulb and the large one Electrode gap not suitable.
  • the object of the invention is a metal halide high-pressure discharge lamp to create the one average lifespan of at least 1000 operating hours has a very short arc with very has high luminance and a color temperature between 4000 and 7000 K - with very good Color rendering - has.
  • the metal halide high-pressure discharge lamp according to the invention is operated at specific arc powers between 60 and 140 W per mm arc length and comparatively low wall loads between 40 and 85 W per cm 2 wall area.
  • bulb blackening or devitrification occurs after a short time with wall loads below or above approximately 60 W per cm 2 , the value for this limit varying depending on the cooling. This reduces the usable luminous flux and the lamp life is limited.
  • the filling of the lamp according to the invention which consists of mercury, at least one noble gas and at least one halogen and cesium, is tantalum and dysprosium, advantageously added with a weight ratio between 0.3 and 1.5, the sum of the filling quantities of these two important additives advantageously is between 0.2 and 1.5 mg per cm 3 of vessel volume.
  • Tantalum maintains the halogen cycle process even with relatively low wall loads and thus largely prevents blackening and devitrification of the bulb, so that a long average service life can be achieved. Tantalum also contributes to the continuum portion in the optical spectrum. With its multi-line spectrum, Dysprosium ensures a high radiation flow in the visible range of the optical spectrum.
  • the addition of tantalum and dysprosium according to the invention thus minimizes the tendency to devitrification and blackening of the bulb - ie the average lifespan is extended accordingly - and the luminous flux and the color rendering are optimized.
  • lithium can optionally be added in addition, up to 0.2 mg per cm 3 of vessel volume, which increases the red component of the radiation, which is particularly the case when the lamp is used in a dichroic cold light reflector Advantage can be that slightly increases the color temperature of the reflected radiation compared to the total radiation of the discharge.
  • lithium is an atomic line emitter, which preferably radiates in the hot arc core and is therefore emitted particularly efficiently by correspondingly focusing special reflectors, which only depict the inner arc core.
  • the discharge vessel can contain cesium up to 0.8 mg per cm 3 of vessel volume. Iodine and bromine are advantageously used as halogens in a molar ratio between 0.2 and 2.
  • FIG. 1 In the figure is a metal halide discharge lamp according to the invention 1 with a power consumption of 400 W schematic (not to scale) shown how they are used in a reflector system can be.
  • the discharge vessel 2 made of quartz glass has an essentially spherical shape Shape and points to two diametrically opposite Place a neck 3, 4 in each pin-shaped tungsten electrodes 5, 6 by means of sealing foils 7, 8 are melted from molybdenum.
  • the ends of the sealing films facing away from the discharge space 7, 8 are with power leads 9, 10 welded when installed in a reflector system with the electrical connections in the reflector get connected.
  • Table 1 shows two fillings according to the invention of the discharge vessel 2 of a 400 W lamp and the lifetimes achieved in each case as well as the lighting data of this lamp.
  • the color temperature is reduced by approximately 500 K compared to filling 1.
  • Filling 1 Filling 2 Li in mg - 0.005 J 2 in mg 0.9 0.92 Br 2 in mg 0.75 0.75 Cs in mg 0.22 0.22 Dy in mg 0.24 0.24 Ta in mg 0.16 0.16 Hg in mg 30.5 30.5 Ar in mbar 450 450 Discharge tube volume in ml: 1.3 1.3 Power consumption in W: 400 Wall load in W / cm 2 : 68 68 Specific power in W / mm Arc length: 95 95 Color temperature in K: 5500 5000 Lifetime in h: 1500 1500 Electrode distance in mm: 4th 4th Luminous efficacy in lm / W: 70 69 medium luminance in kcd / cm 2 : 30th 30th Burning voltage in V: 55 55 Color rendering index Ra
  • Another embodiment relates to a Metal halide discharge lamp according to the invention with a power consumption of 270 W. It differentiates differ in structure from that in the Lamp shown essentially only by one smaller discharge volume and a shorter one Electrode gap and is therefore not pictorial shown.
  • Table 2 shows a filling of the discharge vessel of a 270 W lamp according to the invention and the lighting data of this lamp.
  • Discharge tube volume 0.55 ml
  • Power consumption 270 W.
  • Wall load 81 W / cm 2
  • Specific performance 117 W / mm
  • Color temperature 5000 K. Lifespan : 1000 h
  • Luminous efficacy 70 lm / W medium luminance: 35 kcd / cm 2 Burning voltage: 45 V
  • Color rendering index Ra 80

Landscapes

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

Claims (7)

  1. Lampe (1) à décharge, sous haute pression, à halogénure métallique, ayant une puissance d'arc moyenne comprise entre 60 et 140W/mm de longueur d'arc et destinée à être montée dans des systèmes optiques comprenant une enceinte (2) de décharge en matériau résistant à haute température et transparent à la lumière, deux électrodes (5,6) résistantes aux hautes températures et une atmosphère qui est constituée de mercure, d'au moins un gaz rare, de césium, de dysprosium, ainsi que d'autres métaux pour former des halogénures métalliques, caractérisée en ce que, pour produire de la lumière ayant une température de couleur comprise entre 4000 et 7000 K, pour une charge de paroi de la lampe (1) comprise entre 40 et 85 W par cm2 de surface de paroi, l'atmosphère renferme du tantale comme autre métal pour former des halogénures métalliques.
  2. Lampe à décharge, sous haute pression, à halogénure métallique suivant la revendication 1, caractérisée en ce que l'enceinte de décharge renferme du tantale et du dysprosium dans un rapport pondéral du tantale au dysprosium compris entre 0,3 et 1,5.
  3. Lampe à décharge, sous haute pression, à halogénure métallique suivant la revendication 1, caractérisée en ce que l'enceinte de décharge renferme du tantale et du dysprosium, la somme des quantités des deux constituants étant comprise entre 0,2 et 1,5 mg par cm3 du volume de l'enceinte.
  4. Lampe à décharge, sous haute pression, à halogénure métallique suivant la revendication 1, caractérisée en ce que l'enceinte de décharge renferme, en outre, du lithium comme métal pour former des halogénures métalliques.
  5. Lampe à décharge, sous haute pression, à halogénure métallique suivant la revendication 4, caractérisée en ce que la quantité du lithium s'élève jusqu'à 0,2 mg par cm3 du volume de l'enceinte.
  6. Lampe à décharge, sous haute pression, à halogénure métallique suivant la revendication 1, caractérisée en ce que l'enceinte de décharge renferme, comme halogène pour les composés halogénures, de l'iode et du brome en un rapport molaire de l'iode au brome compris entre 0,2 et 2.
  7. Lampe à décharge, sous haute pression, à halogénure métallique suivant la revendication 1, caractérisée en ce que l'enceinte de décharge renferme du césium en une quantité allant jusqu'à 0,8 mg par cm3 du volume de l'enceinte.
EP94911079A 1993-03-31 1994-03-25 Lampe a decharge sous haute pression, a halogenure metallique, destinee au montage dans des systemes optiques Expired - Lifetime EP0692139B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4310539A DE4310539A1 (de) 1993-03-31 1993-03-31 Metallhalogenid-Hochdruckentladungslampe für den Einbau in optische Systeme
DE4310539 1993-03-31
PCT/DE1994/000343 WO1994023441A1 (fr) 1993-03-31 1994-03-25 Lampe a decharge sous haute pression, a halogenure metallique, destinee au montage dans des systemes optiques

Publications (2)

Publication Number Publication Date
EP0692139A1 EP0692139A1 (fr) 1996-01-17
EP0692139B1 true EP0692139B1 (fr) 1998-06-10

Family

ID=6484375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94911079A Expired - Lifetime EP0692139B1 (fr) 1993-03-31 1994-03-25 Lampe a decharge sous haute pression, a halogenure metallique, destinee au montage dans des systemes optiques

Country Status (7)

Country Link
US (1) US5635796A (fr)
EP (1) EP0692139B1 (fr)
JP (1) JP3447293B2 (fr)
KR (1) KR100313740B1 (fr)
CN (1) CN1061171C (fr)
DE (2) DE4310539A1 (fr)
WO (1) WO1994023441A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5985303A (en) * 1995-08-11 1999-11-16 Okada; Toru Shelf-life extender for food use
US5831388A (en) * 1995-08-23 1998-11-03 Patent-Truehand-Gesellschaftfuer Elektrische Gluelampen Mbh Rare earth metal halide lamp including niobium
JP3200575B2 (ja) * 1997-09-01 2001-08-20 フェニックス電機株式会社 メタルハライドランプ
JP4297227B2 (ja) * 1998-07-24 2009-07-15 ハリソン東芝ライティング株式会社 高圧放電ランプおよび照明装置
US6759806B2 (en) * 2000-03-13 2004-07-06 Nec Microwave Tube, Ltd. High pressure discharge lamp and method for sealing a bulb thereof
US7808181B1 (en) * 2005-03-31 2010-10-05 Koninklijke Philips Electronics N.V. High intensity discharge lamp with terbium halide fill
DE102005026208A1 (de) * 2005-06-07 2006-12-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metallhalogenid-Hochdruckentladungslampe
DE102005026207A1 (de) * 2005-06-07 2006-12-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metallhalogenid-Hochdruckentladungslampe
ES2434770T3 (es) * 2010-04-08 2013-12-17 Flowil International Lighting (Holding) B.V. Lámpara HID regulable de arco corto con color constante durante la regulación
KR102080279B1 (ko) 2018-03-15 2020-02-24 이영덕 전구의 착탈이 용이한 인테리어 조명등
RU2713914C1 (ru) * 2019-08-13 2020-02-11 Федеральное государственное бюджетное образовательное учреждение высшего образования "МИРЭА - Российский технологический университет" Имитатор солнечного излучения

Family Cites Families (13)

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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
US3761758A (en) * 1972-01-27 1973-09-25 Gte Sylvania Inc Metal halide lamp containing mercury, light emitting metal, sodium and another alkali metal
US4229673A (en) * 1979-01-18 1980-10-21 Westinghouse Electric Corp. Mercury metal-halide lamp including neodymium iodide, cesium and sodium iodide
JPS57172649A (en) * 1981-04-17 1982-10-23 Mitsubishi Electric Corp Non-electrode electric-discharge lamp
JPS58175251A (ja) * 1982-04-07 1983-10-14 Hitachi Ltd 高輝度紫外線光源
DE3506295A1 (de) * 1985-02-22 1986-08-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Kompakte hochdruckentladungslampe
US4810938A (en) * 1987-10-01 1989-03-07 General Electric Company High efficacy electrodeless high intensity discharge lamp
US4978884A (en) * 1988-05-19 1990-12-18 U.S. Phillips Corporation Metal halide discharge lamp having low color temperature and improved color rendition
US5013968A (en) * 1989-03-10 1991-05-07 General Electric Company Reprographic metal halide lamps having long life and maintenance
JP2650463B2 (ja) * 1989-05-31 1997-09-03 岩崎電気株式会社 メタルハライドランプ
US4968916A (en) * 1989-09-08 1990-11-06 General Electric Company Xenon-metal halide lamp particularly suited for automotive applications having an improved electrode structure
DE4040858A1 (de) * 1990-12-20 1992-06-25 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenid-hochdruckentladungslampe
KR950001852A (ko) * 1993-06-01 1995-01-04 에프.제이.스미트 고압금속 할로겐 램프

Also Published As

Publication number Publication date
WO1994023441A1 (fr) 1994-10-13
KR960701462A (ko) 1996-02-24
JP3447293B2 (ja) 2003-09-16
DE59406224D1 (de) 1998-07-16
CN1120374A (zh) 1996-04-10
CN1061171C (zh) 2001-01-24
EP0692139A1 (fr) 1996-01-17
DE4310539A1 (de) 1994-10-06
KR100313740B1 (ko) 2001-12-28
US5635796A (en) 1997-06-03
JPH08508130A (ja) 1996-08-27

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