EP0702394A2 - 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
EP0702394A2
EP0702394A2 EP95112860A EP95112860A EP0702394A2 EP 0702394 A2 EP0702394 A2 EP 0702394A2 EP 95112860 A EP95112860 A EP 95112860A EP 95112860 A EP95112860 A EP 95112860A EP 0702394 A2 EP0702394 A2 EP 0702394A2
Authority
EP
European Patent Office
Prior art keywords
lamp according
filling
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.)
Granted
Application number
EP95112860A
Other languages
German (de)
English (en)
Other versions
EP0702394A3 (fr
EP0702394B1 (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 invention relates to a metal halide high-pressure discharge lamp according to claim 1.
  • Such lamps are characterized, among other things, by good to very good color rendering (R a ⁇ 90) and color temperatures in the range between approximately 4000 K and 7000 K. These values are achieved with light yields of typically more than 70 lm / W. These lamps are therefore suitable for general lighting as well as for special lighting purposes, for example projection technology, effect and stage lighting as well as for photo, film and television recordings.
  • the electrical power consumption is between approx. 35 W and 5000 W. Typical power levels for general lighting are 150 W and 400 W. For special lighting, higher wattages are usually required, typically 575 W and more.
  • the discharge tubes of the lamps are usually sealed on two sides, e.g. by means of crushing or melting and bypassing an outer bulb.
  • versions sealed on one side are also possible.
  • a long service life (typically 6000 h) is of further importance, particularly in its general meaning.
  • the lamps for special lighting purposes are often used in combination with optical reflectors.
  • the shortest possible arc lengths are sought in this case.
  • the electrode distances are therefore only a few mm, typically less than 10 mm. With the corresponding power consumption, this results in significantly higher specific arc powers, typically between approx. 50 W and 100 W per mm arc length - compared to typically between approx. 10 W and 20 W per mm arc length for versions for general lighting purposes.
  • the consequently higher wall loads promote premature devitrification of the discharge vessel and thus limit the service life to usually a few 100 hours.
  • 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 cm2 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) as well as the rare earth metals (SE) per cm3 discharge volume dysprosium bromide (DyBr3, 1 ⁇ mol) and thulium bromide (TmBr3, 0.5 ⁇ mol), also 1 ⁇ mol thallium bromide, TlBromide (TlBromide) (CsBr) and 0.5 ⁇ mol thorium iodide (ThJ4).
  • the thorium (Th) can be replaced by hafnium (Hf).
  • EP-A 0 492 205 discloses a high pressure metal halide discharge lamp for optical applications. Typical power levels are 400 W, 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 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, serves 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 cm3 of vessel volume for operating voltages between 120 V and 95 V.
  • the filling according to the invention is distinguished from that in EP-A 0 391 283 by the absence of Tm, with essentially equally good color rendering (R a ⁇ 90) and a service life of approx. 1500 h and more. In comparison to EP-A 0 492 205, this corresponds at least to a doubling of the service life with luminous efficacies of approximately 80 lm / W. This is achieved by a targeted increase in the Hf (or Zr) portion. In this way, premature devitrification can be avoided and consequently an extension of the service life can be achieved. An improvement in color rendering is also achieved.
  • the molar ratio between the filling proportion of Hf and Zr on the one hand and the filling proportion of Dy and the sum of the filling proportions 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 following molar ratios have proven themselves with regard to the other filling components Tl and Cs: Hf (or Zr): Tl at least 0.65, for high wall loads the ratio is preferably 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.
  • the molar ratio between the filling proportion of Hf or Zr on the one hand and the sum of the filling proportions of the SE (ie Dy and / or Gd) and Tl and Cs, on the other hand, is at least 0.14; for high wall loads, the ratio is preferably 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 cm3 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 cm3 of the vessel volume.
  • the discharge vessel is preferably operated within an outer bulb which is evacuated for particularly good color rendering.
  • the outer bulb contains a gas filling, for example up to 70 kPa nitrogen (N2) or up to 40 kPa carbon dioxide (CO2), although the color rendering is somewhat reduced.
  • 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 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 hand 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.
  • FIG. 2 An embodiment of a 400 W lamp is shown schematically in Figure 2.
  • the discharge vessel 2 is squeezed on two sides and is enclosed by a cylindrical, evacuated outer bulb 3 made of tempered glass, which has a base on one side.
  • One end of the outer bulb 3 has a rounded tip 17, whereas the other end has a screw base 12.
  • a holding frame 18 fixes the discharge vessel 2 axially in the interior of the outer bulb 3.
  • the holding frame 18 consists, in a manner known per se, of two supply wires, one of which is connected to the power supply 8 of the discharge vessel near the base.
  • the other lead wire is led to the power supply 9 remote from the base via a solid metal support wire which extends along the discharge vessel 2.
  • It also has a guide element at the end 15 of the discharge vessel near the base (in the form of a stamped sheet) and a support in the vicinity of the tip 17 in the form of a pitch circle.
  • the ends 15, 16 of the discharge vessel 2 are provided with a heat-reflecting coating.
  • 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 cm3.
  • 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 a two-sided sealed discharge vessel 2 made of quartz glass, which is enclosed by a cylindrical, evacuated outer bulb 3 with a base 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 electrodes 4, 5 located opposite each other at a distance of 7 mm are melted into the discharge vessel 2 in a gas-tight manner by means of foils 6, 7 made of molybdenum.
  • the power supply lines 8, 9 are each connected to the first ends of two solid lead wires 20, 21.
  • the second ends of the lead wires 20, 21 are squeezed into the foot of the outer bulb 3, as a result of which the discharge vessel 2 is fixed axially in the interior of the outer bulb 3.
  • the lead wires 20, 21 are connected to the electrical connections 24, 25 of the plug-in base 19 by means of the sealing foils 22, 23 of the foot and via further short power supplies.
  • a mica plate 26 arranged in the base 19 between the connections 24, 25 serves for 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 cm3.
  • the arc power and the burning voltage are 82 W per mm arc length or 95 V. Table 3c shows the lighting values achieved.

Landscapes

  • Discharge Lamp (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
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
DE4432611 1994-09-14
DE4432611A DE4432611A1 (de) 1994-09-14 1994-09-14 Metallhalogenid-Hochdruckentladungslampe

Publications (3)

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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0841686A2 (fr) * 1996-11-07 1998-05-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge haute pression à halogénure métallique
EP0932796A1 (fr) * 1996-10-18 1999-08-04 Walter Wadey & CO. PTY. LTD. Construction de luminaire ou de projecteur d'eclairage
WO2001095368A1 (fr) * 2000-06-07 2001-12-13 Koninklijke Philips Electronics N.V. Lampe a decharge haute pression
WO2008060857A2 (fr) * 2006-11-09 2008-05-22 General Electric Company Lampe à décharge à température de couleur élevée
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
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
WO2008126014A2 (fr) * 2007-04-13 2008-10-23 Koninklijke Philips Electronics N.V. Lampe à décharge comprenant une matière émettant un rayonnement provenant d'un monoxyde
WO2010109385A1 (fr) 2009-03-27 2010-09-30 Koninklijke Philips Electronics N.V. Projecteur à effet « gobo » et tête mobile

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US20090009085A1 (en) * 2006-01-25 2009-01-08 Koninklijke Philips Electronics N.V. Tld Low-Pressure Gas Discharge Lamp
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
DE102010038537A1 (de) 2010-07-28 2012-02-02 Osram Ag Hochdruckentladungslampe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391283A2 (fr) 1989-04-04 1990-10-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression à double culot
EP0492205A2 (fr) 1990-12-20 1992-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression à halogénure métallique

Family Cites Families (2)

* 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
DE8912495U1 (fr) * 1989-04-04 1990-01-11 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391283A2 (fr) 1989-04-04 1990-10-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression à double culot
EP0492205A2 (fr) 1990-12-20 1992-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression à halogénure métallique

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0932796A1 (fr) * 1996-10-18 1999-08-04 Walter Wadey & CO. PTY. LTD. Construction de luminaire ou de projecteur d'eclairage
EP0932796A4 (fr) * 1996-10-18 2002-03-06 Walter Wadey & Co Pty Ltd Construction de luminaire ou de projecteur d'eclairage
EP0841686A2 (fr) * 1996-11-07 1998-05-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge haute pression à halogénure métallique
EP0841686A3 (fr) * 1996-11-07 1998-06-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge haute pression à halogénure métallique
US5929563A (en) * 1996-11-07 1999-07-27 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Metal halide high pressure discharge lamp
WO2001095368A1 (fr) * 2000-06-07 2001-12-13 Koninklijke Philips Electronics N.V. Lampe a decharge haute pression
WO2008060857A2 (fr) * 2006-11-09 2008-05-22 General Electric Company Lampe à décharge à température de couleur élevée
WO2008060857A3 (fr) * 2006-11-09 2008-09-12 Gen Electric Lampe à décharge à température de couleur élevée
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
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
WO2008126014A2 (fr) * 2007-04-13 2008-10-23 Koninklijke Philips Electronics N.V. Lampe à décharge comprenant une matière émettant un rayonnement provenant d'un monoxyde
WO2008126014A3 (fr) * 2007-04-13 2009-04-09 Koninkl Philips Electronics Nv Lampe à décharge comprenant une matière émettant un rayonnement provenant d'un monoxyde
WO2008126021A3 (fr) * 2007-04-13 2009-04-09 Koninkl Philips Electronics Nv Lampe à décharge comprenant des électrodes et une matière émettant un rayonnement provenant d'un monoxyde
WO2008126020A3 (fr) * 2007-04-13 2009-04-09 Koninkl Philips Electronics Nv Lampe à décharge comprenant un matériau émettant un rayonnement monoxyde ainsi qu'un matériau non métallique
WO2010109385A1 (fr) 2009-03-27 2010-09-30 Koninklijke Philips Electronics N.V. Projecteur à effet « gobo » et tête mobile

Also Published As

Publication number Publication date
EP0702394A3 (fr) 1998-04-29
DE59507563D1 (de) 2000-02-10
JPH0896748A (ja) 1996-04-12
EP0702394B1 (fr) 2000-01-05
DE4432611A1 (de) 1996-03-21
CA2156472A1 (fr) 1996-03-15

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