EP1032021B1 - Metallhalogenidlampe - Google Patents
Metallhalogenidlampe Download PDFInfo
- Publication number
- EP1032021B1 EP1032021B1 EP00100688A EP00100688A EP1032021B1 EP 1032021 B1 EP1032021 B1 EP 1032021B1 EP 00100688 A EP00100688 A EP 00100688A EP 00100688 A EP00100688 A EP 00100688A EP 1032021 B1 EP1032021 B1 EP 1032021B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal halide
- halide lamp
- lamp according
- fill
- discharge vessel
- 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
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Images
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
Definitions
- the invention relates to a metal halide lamp according to the preamble of Claim 1.
- metal halide lamps a quartz glass or ceramic discharge vessel, often in an outer bulb is housed.
- a metal halide lamp which uses AlJ 3 and / or AlBr 3 together with metal halides of thallium, cesium and / or rare earth metals for high color temperatures above 5000 K as fillings for photo-optical purposes.
- Iron is often used in metal halide lamps that are used as UV lamps used as the main source of UV radiation.
- it is over here known from EP-B 543 169 to avoid the blackening occurring with iron add other UV lamps such as manganese, bismuth, thallium or tin.
- metal halide discharge lamps often contain sodium.
- US-A 3 575 630 describes a filling with halides of the metals Na, Tl and Zr.
- Metal halide discharge lamps with a glass discharge vessel and a sodium-containing filling have the disadvantage of sodium diffusion through the discharge vessel, as a result of which the lamp life is reduced. The sodium diffusion must be reduced with additional measures, for example the shielding of the power supply in the vicinity of the discharge vessel. This increases the manufacturing cost of the lamp.
- the metal halide filling contains manganese in the form of Mn halide as the essential or only component.
- the spectral lines of manganese in the visible spectral range are used for the first time to improve the general color rendering index R a .
- the improved red rendering (R 9 ) is primarily due to the fact that a number of Mn lines lie in the wavelength range greater than 603 nm.
- a particular advantage is that the UV radiation from the manganese can also be used to increase the temperature of the discharge vessel. This is done in that an envelope (often an additional outer bulb and / or the discharge vessel itself) is made of UV-impermeable material, for example hard glass or doped quartz glass. The UV radiation is thus absorbed in the envelope and largely returned to the discharge vessel. This increases the temperature of the cold spot, which benefits the light output.
- an envelope often an additional outer bulb and / or the discharge vessel itself
- the UV radiation is thus absorbed in the envelope and largely returned to the discharge vessel. This increases the temperature of the cold spot, which benefits the light output.
- Typically can be with manganese as the only metal a very high color temperature of 8000 K at a high Ra of more than 90 achieve. Overall, an R a > 95 and an R 9 > 90 can be achieved.
- Manganese with other halides of the elements Cs, Dy, Tl, Ho, Tm is advantageous as well as possibly small amounts of sodium combined.
- the molar ratio should be Mn / Na> 1, preferably> 2.
- Mn is used for complete or partial Substitution of Na because of essential spectral lines of the Mn in the visible spectral range are very close to the sodium D lines.
- These fillings with several Components are excellently suited for generation in general lighting warm white or neutral white light colors with a color temperature between about 3000 and 4500 K.
- Mn forms an essential component of the Metal halide filling, in particular its proportion is at least 20% by weight of the entire metal halide filling.
- the amount of Mn is preferably from 0.01 to 50 ⁇ mol per cm 3 of the volume of the discharge vessel.
- the filling is up to 30 ⁇ mol per cm 3 . Cs attached. Alternatively or additionally, one or more of the following components (usually as a halide) are added to the filling: up to 35 ⁇ mol per cm 3 Dy, or up to 15 ⁇ mol per cm 3 Tl, or up to 18 ⁇ mol per cm 3 Ho, or up to 18 ⁇ mol per cm 3 Tm. This allows the desired R a and R 9 to be fine-tuned.
- halogens for the formation of halides are iodine and / or bromine used.
- the volume between the discharge vessel and the outer bulb is advantageously evacuated.
- a particularly high color rendering index R a can thus be achieved.
- the volume between the discharge vessel and the outer bulb can contain a gas filling, in particular inert gas, which can increase the service life.
- the gas filling consists of 10 to 90 kPa N 2 (cold) or 5 to 70 kPa CO 2 (cold).
- FIG. 1 An embodiment of a metal halide lamp 1 with a power of 250 W. is shown schematically in Fig. 1. It is a pinched on both sides Discharge vessel 2, which from a cylindrical evacuated outer bulb 3 Tempered glass (UV-impermeable) is enclosed, which is capped on one side. The one The end of the outer bulb 3 has a rounded tip: 4; whereas the other End has a screw base 5.
- a holding frame 6 fixes the discharge vessel 2 axially inside the outer bulb 3.
- the holding frame 6 is in the essentially of two lead wires 7, 8, of which the shorter (7) with the power supply 9 of the discharge vessel 2 near the base is connected.
- the long Lead wire 8 is essentially a solid metal support wire that runs along of the discharge vessel 2 extends and leads to the power supply 10 remote from the base.
- the ends 15 of the discharge vessel 2 have a heat-reflecting coating 16 provided.
- Several getters 14 are additionally welded to the holding frame 6.
- the volume of the discharge vessel 2 is approximately 5.2 cm 3 .
- the distance between the two electrodes 11, 12 is 27.5 mm.
- the discharge gas contains 56 mbar argon as the base gas.
- the outer bulb is evacuated and therefore thermally well insulated, which results in particularly good color rendering.
- the outer bulb can contain a gas filling to increase the service life.
- Inert gas N 2 or CO 2
- FIG. 2 shows the spectrum of a lamp in accordance with the first exemplary embodiment, the discharge volume containing 16 mg Hg and 3.4 mg MnJ 2 . Selected spectral lines of Mn and Hg are marked.
- Mn has, among other things, an intensive group of spectral lines in the range from 601 to 603 nm, with which lamps with warm white to neutral white light color (similar to a filling containing Na) can be realized, because Na has the most intense spectral lines at a wavelength of about 589 nm.
- the spectrum of FIG. 2 shows that Mn has numerous line groups in the visible spectral range at wavelengths greater than 603 nm which are suitable for improving the red reproduction. Further usable line groups are in the short-wave range between approximately 450 and 550 nm.
- the luminous efficacy is relatively low at around 34 lm / W.
- a lower color temperature of typically 4200 K down to approx. 3900 K can be achieved with a metal halide filling consisting of CsJ (14.7% by weight), DyJ 3 (30.0% by weight), TIJ (10 , 2%), HoJ 3 (9.2%), TmJ 3 (9.2%) and MnJ 2 (26.7%).
- the metal halide filling consists of CsJ (11.5% by weight), DyJ 3 (31.2% by weight), TlJ (10.6%), HoJ 3 (9.5%), TmJ 3 (9.5%) and MnJ 2 (27.7%).
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Luminescent Compositions (AREA)
- Glass Compositions (AREA)
Description
- Figur 1
- eine Metallhalogenidlampe in Seitenansicht;
- Figur 2
- das Spektrum einer Metallhalogenidlampe mit mangan-haltiger Füllung;
- Figur 3
- das Spektrum einer Metallhalogenidlampe mit einer Füllung aus mehreren Komponenten.
Claims (16)
- Metallhalogenidlampe zur Anwendung im sichtbaren Spektralbereich mit einem Farbwiedergabeindex von Ra>80, wobei das Entladungsgefäß (2) zwei Elektroden (11,12) und eine ionisierbare Füllung aus Inertgas, Quecksilber und mindestens einem Metallhalogenid enthält, dadurch gekennzeichnet, daß ein Halogenid des Mn entweder als ein einziges oder ein wesentliches Metallhalogenid verwendet wird, wobei der Anteil des Mn-Halogenids an der gesamten Metallhalogenid-Füllung mindestens 20 Gew.-% beträgt.
- Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß zum Erzielen einer Farbtemperatur von unter 5000 K außerdem mindestens ein Halogenid aus der Gruppe der Metalle Cs, Dy, Tl, Ho, Tm, und evtl. Na in kleinen Mengen, vorhanden ist, wobei das molare Verhältnis Mn/Na > 1 ist.
- Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Füllmenge an Mn 0,01 bis 50 µmol pro cm3 des Volumens des Entladungsgefäßes beträgt.
- Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 30 µmol Cs pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.
- Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 35 µmol Dy pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.
- Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 15 µmol Tl pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.
- Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 18 µmol Ho pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.
- Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß der Füllung 0 bis 18 µmol Tm pro cm3 des Volumens des Entladungsgefäßes beigefügt ist.
- Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß als Halogene zur Bildung von Halogeniden Jod und/oder Brom verwendet sind.
- Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Füllung von einer UV-undurchlässigen Umhüllung (3), insbesondere einem Außenkolben, umgeben ist.
- Metallhalogenidlampe nach Anspruch 10, dadurch gekennzeichnet, daß das Volumen zwischen Entladungsgefäß (2) und Außenkolben (3) evakuiert ist.
- Metallhalogenidlampe nach Anspruch 10, dadurch gekennzeichnet, daß das Volumen zwischen Entladungsgefäß (2) und Außenkolben (3) eine Gasfüllung, insbesondere Inertgas, enthält.
- Metallhalogenidlampe nach Anspruch 12, dadurch gekennzeichnet, daß die Gasfüllung aus 10 bis 90 kPa N2 (kalt) besteht.
- Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß die Gasfüllung aus 5 bis 70 kPa CO2 (kalt) besteht.
- Metallhalogenidlampe nach Anspruch 2, dadurch gekennzeichnet, daß das molare Verhältnis Mn/Na > 2 ist.
- Metallhalogenidlampe nach Anspruch 1, dadurch gekennzeichnet, daß zum Erzielen einer Farbtemperatur von über 8000 K als einziges Metallhalogenid ein Halogenid des Mn verwendet wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19907301A DE19907301A1 (de) | 1999-02-22 | 1999-02-22 | Metallhalogenidlampe |
DE19907301 | 1999-02-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1032021A1 EP1032021A1 (de) | 2000-08-30 |
EP1032021B1 true EP1032021B1 (de) | 2004-08-04 |
Family
ID=7898259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00100688A Expired - Lifetime EP1032021B1 (de) | 1999-02-22 | 2000-01-14 | Metallhalogenidlampe |
Country Status (7)
Country | Link |
---|---|
US (1) | US6400084B1 (de) |
EP (1) | EP1032021B1 (de) |
JP (1) | JP4499234B2 (de) |
AT (1) | ATE272894T1 (de) |
CA (1) | CA2298269A1 (de) |
DE (2) | DE19907301A1 (de) |
HU (1) | HU222455B1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6731068B2 (en) * | 2001-12-03 | 2004-05-04 | General Electric Company | Ceramic metal halide lamp |
DE10214631A1 (de) * | 2002-04-02 | 2003-10-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenidfüllung und zugehörige Lampe |
ATE406667T1 (de) * | 2004-03-08 | 2008-09-15 | Koninkl Philips Electronics Nv | Metallhalogenidlampe |
US20090009085A1 (en) * | 2006-01-25 | 2009-01-08 | Koninklijke Philips Electronics N.V. | Tld Low-Pressure Gas Discharge Lamp |
DE102006025947A1 (de) | 2006-06-02 | 2007-12-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Metallhalogenidfüllung für eine elektrische Hochdruckentladungslampe und zugehörige Lampe |
DE102008013607B3 (de) * | 2008-03-11 | 2010-02-04 | Blv Licht- Und Vakuumtechnik Gmbh | Quecksilberfreie Metallhalogenid-Hochdruckentladungslampe |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52120586A (en) * | 1976-04-01 | 1977-10-11 | Toshiba Corp | Metallic vapor discharge lamp |
DE2925410A1 (de) * | 1979-06-23 | 1981-01-08 | Hartmann & Braun Ag | Niederdruck-hohlkathodenlampe mit einer stickstoff-sauerstoff-fuellung |
DD146549A1 (de) * | 1979-09-12 | 1981-02-18 | Amlong Uwe Jens | Elektrische entladungslampe fuer bestrahlungszwecke |
US4678960A (en) * | 1985-08-01 | 1987-07-07 | General Electric Company | Metallic halide electric discharge lamps |
US4859899A (en) * | 1987-05-07 | 1989-08-22 | Gte Products Corporation | Metal-halide lamp having heat redistribution means |
JPH01128345A (ja) * | 1987-11-12 | 1989-05-22 | Toshiba Corp | メタルハライドランプ |
EP0543169B2 (de) * | 1991-11-21 | 1998-08-19 | Ushiodenki Kabushiki Kaisha | Metalldampfentladungslampe |
DE69501379T2 (de) * | 1994-04-13 | 1998-06-25 | Philips Electronics Nv | Metall-halogenid lampe |
JPH09171797A (ja) * | 1995-12-19 | 1997-06-30 | Matsushita Electron Corp | メタルハライドランプ及びそれを用いた照明光学装置並びに画像表示装置 |
-
1999
- 1999-02-22 DE DE19907301A patent/DE19907301A1/de not_active Withdrawn
-
2000
- 2000-01-14 AT AT00100688T patent/ATE272894T1/de not_active IP Right Cessation
- 2000-01-14 DE DE50007238T patent/DE50007238D1/de not_active Expired - Lifetime
- 2000-01-14 EP EP00100688A patent/EP1032021B1/de not_active Expired - Lifetime
- 2000-02-04 US US09/499,099 patent/US6400084B1/en not_active Expired - Fee Related
- 2000-02-08 CA CA002298269A patent/CA2298269A1/en not_active Abandoned
- 2000-02-21 HU HU0000753A patent/HU222455B1/hu not_active IP Right Cessation
- 2000-02-22 JP JP2000044108A patent/JP4499234B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE50007238D1 (de) | 2004-09-09 |
HUP0000753A2 (hu) | 2000-09-28 |
HU222455B1 (hu) | 2003-07-28 |
JP2000243350A (ja) | 2000-09-08 |
CA2298269A1 (en) | 2000-08-22 |
HUP0000753A3 (en) | 2002-11-28 |
EP1032021A1 (de) | 2000-08-30 |
US6400084B1 (en) | 2002-06-04 |
DE19907301A1 (de) | 2000-08-24 |
JP4499234B2 (ja) | 2010-07-07 |
HU0000753D0 (en) | 2000-04-28 |
ATE272894T1 (de) | 2004-08-15 |
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