EP1069594A2 - Gleichstrombogenlampe - Google Patents
Gleichstrombogenlampe Download PDFInfo
- Publication number
- EP1069594A2 EP1069594A2 EP00117488A EP00117488A EP1069594A2 EP 1069594 A2 EP1069594 A2 EP 1069594A2 EP 00117488 A EP00117488 A EP 00117488A EP 00117488 A EP00117488 A EP 00117488A EP 1069594 A2 EP1069594 A2 EP 1069594A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- lamp according
- anode
- piston
- curvature
- 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
Links
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
- H01J61/30—Vessels; Containers
- H01J61/32—Special longitudinal shape, e.g. for advertising purposes
-
- 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
- H01J61/84—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 present invention relates to a DC arc lamp according to the Preamble of claim 1.
- the color separation effect is caused by the anode between the lamps and cathode of the direct current arc lamp causes direct electrical field.
- the DC electrical field influences the concentration distribution of the light-generating Metal ions between anode and cathode. This will make the spatial Distribution of the metal ions between the anode and cathode is usually inhomogeneous.
- different concentration distributions arise for different types of metal ions on. Because different types of metal ions have different spectral Contributing to the total luminous flux of the lamp ultimately results in the unwanted Color separation effect.
- the invention relates to a DC arc lamp with a halogen filling.
- metal halides during lamp operation inside the discharge vessel.
- Metal halides have a higher one Vapor pressure as the corresponding elemental metals.
- the high specific arc powers typically approx. 80 W per mm arc length and more also high vapor pressures of the light-generating metal halides.
- the high luminous flux of the lamp is ensured.
- Another essential quality criterion - not only in the area of projection - are sufficient proportions of the primary colors blue, green and red for good color rendering and the desired color temperature.
- No. 2,965,790 also shows an arc lamp with an asymmetrically shaped one Piston in which the inner wall of the piston around the anode is wider than around the cathode.
- the invention is based on the technical problem of a DC arc lamp with improved operating properties, especially with regard to projection applications, and to provide an improved projection device.
- a DC arc lamp a filling of at least the following components: an ignition gas, mercury and a halogen, characterized by the additional component: zinc and in that the total concentration for zinc, including optionally present
- the total cadmium is in the following range: 0.05 to 3.0 ⁇ mol per ml of the lamp vessel or a projection device with such a projection lamp.
- the proportion of red in the light generated can be due to lithium in the filling of the invention DC arc lamp are amplified.
- lithium predominantly shows a very long-wave emission, i.e. to a very deep red part leads.
- V ( ⁇ ) - or brightness sensitivity curve is shown.
- the spectral sensitivity of the human eye decreases significantly at the long-wave edge. Therefore, as far as the red component is based on the lithium emission, a corresponding one increased spectral power can be generated to the desired - and ultimately of interest - to generate luminous flux.
- a metal halide direct current arc lamp is necessary in addition to an ignition gas, e.g. Argon, and a halogen, e.g. Bromine or iodine, too It must contain mercury to build up the necessary burning voltage green color of mercury. That through the mercury content The specified green component must be red when setting the color temperature be compensated, which exacerbates the problem outlined above.
- an ignition gas e.g. Argon
- a halogen e.g. Bromine or iodine
- Zinc is in the context of this invention as an alternative to the 2B element Zinc is not suitable because it is also to a certain extent the color separation is reduced, but it increases the amount of green in the light excessively.
- Zinc offers versus cadmium, which can also be included optionally, and Mercury also has the benefit of better environmental performance.
- Cadmium on the other hand can be beneficial for certain applications because of the red rendering is even better. According to the invention, the zinc and cadmium quantities are therefore measured in individual cases the possibility to choose between optimal lamp data and environmental considerations.
- the following preferred concentrations come in particular for Cd and Zn considered: 0.05 to 3.0 pmol per ml of vessel volume.
- concentration information refer to the sum of the individual concentrations of Cd or Zn, where the concentration of one of the two individual components can also be zero.
- the component additionally shows yttrium just together with the basic composition according to the invention explained special advantages.
- the first is an improvement in the luminous flux.
- Yttrium is therefore used to achieve the above basic effects of the invention are not necessary, but has proven to be in in terms of luminous flux, service life and maintenance surprisingly more effective optional addition highlighted.
- a “blue element” preferred according to the invention is indium.
- rare earth metals especially dysprosium, as well as thallium.
- halogen for the setting of desired vapor pressures through the formation of metal halide compounds iodine and / or bromine are preferred.
- the anode In the case of direct current arc lamps, the anode is in principle a much stronger one exposed to thermal stress than the cathode and becomes accordingly hotter. So that it can withstand this thermal load, the anode is at DC arc lamps are generally much more solid than the cathode. In particular, it generally has a larger diameter.
- the temperature homogeneity of the lamp is improved by that the inside wall of the piston is wider around the anode than around the cathode. This can, depending on the selected shape of the electrodes and depending on the manufacturing technology Aspects, with different concrete geometric shapes can be achieved, with geometrically simple and therefore easy to manufacture piston shapes are preferred.
- the arc length is in Connection with the lamp power.
- a reference to the piston size makes little sense, because the piston size due to the thermal load capacity of the piston material is determined and consequently in future material improvements (Ceramic instead of quartz glass) can decrease significantly.
- Quantitatively preferred ranges for the asymmetry of the piston shapes can be describe by the ratio of anode-side to cathode-side longitudinal section half-area. As illustrated in the exemplary embodiment, these are surfaces meant that in longitudinal section on both sides of one dividing the inner length of the piston in the middle and lie on the plane perpendicular to the lamp longitudinal axis, the lamp longitudinal axis each contain half of the inside length of the piston and the rest of the inside wall of the piston are limited. This ratio is preferably over 1.1 and further preferably less than 1.5.
- Shapes are often used in lamp bulb molding machines for simplified mold production for the sake of internal surfaces corresponding to the shape of the piston have it described in longitudinal section by radii of curvature.
- the anode-side and the cathode-side end of the piston by one Longitudinal section radius of curvature (as illustrated in the exemplary embodiment in the figure) describe, it being preferred according to the invention that the anode-side Longitudinal section radius of curvature is smaller than the cathode side, preferably 50% to 80% of the latter. This means that the piston is stronger on the anode side curved or less flat. So another piston shape becomes on the anode side reached.
- the intention pursued according to the invention to reduce temperature gradients in the lamp can alternatively also by a suitable reflecting and / or absorbing Heat accumulation can be reached at the end of the piston on the cathode side.
- a suitable reflecting and / or absorbing Heat accumulation can be reached at the end of the piston on the cathode side.
- the figure shows in longitudinal section a DC short-arc lamp with a longitudinal axis 2, along which an anode 4 and a cathode 5 lie.
- a longitudinal direction in the Middle of the piston interior enclosed by a piston inner wall 3 that is bisecting an inner bulb length 7 is also one on the lamp longitudinal axis 2 perpendicular center plane 1 is drawn.
- the anode-side longitudinal section half surface differs specifically and the cathode-side longitudinal section half surface, each of which in the Figure left or right of the central plane lying longitudinal section area within the piston inner wall 3 corresponds.
- the figure shows that the anode-side curvature of the piston in longitudinal section Descriptive radius of curvature 8 significantly smaller than the corresponding one Radius of curvature 9 on the cathode side.
- the radius of curvature is preferably 8 50% - 80% of the radius of curvature 9. It can also be seen that the corresponding Longitudinal intersection centers above and below the lamp longitudinal axis 2 do not coincide and are different on the anode side and cathode side lie. However, the lamp is rotationally symmetrical about the lamp longitudinal axis 2.
- the corresponding asymmetrical piston design has the consequence that the piston around the anode 4, which is much thicker than the cathode 5, is sufficient Keeps a distance and thus a uniform temperature distribution overall results in the longitudinal direction.
- the figure shows that the distance between the anode 4 and the cathode 5, that is to say the arc length 6, is selected to be very short, in the present case 1.5 mm in comparison to radii of curvature of 4 mm (8) and 6 mm (9) and a lamp power of 270 W (specific power 180 W / mm).
- the inside length of the piston 7 is almost 10 times the length of the arc 6.
- An operating voltage of 35 V with a luminous flux of 18 klm results from a filling volume of 0.7 ml with a wall load of 65 W / cm 2 .
- a color temperature of 6,800 K was set with the following filling: 200 mbar argon, 20 mg mercury, 0.11 mg cadmium iodide (Cdl 2 ) - corresponding to approx.0.43 ⁇ mol Cd per ml flask volume -, 0.42 mg mercury bromide (HgBr 2 ), 0.12 mg mercury iodide (Hgl 2 ), 0.05 mg indium iodide (Inl 2 ), 0.05 mg lithium iodide (LiI 2 ), 0.11 mg dysprosium and 0.05 mg yttrium.
- Cadmium can be replaced by zinc in a molar equivalent.
- Thallium iodide can be added up to a value of 0.2 mg / ml.
Landscapes
- Discharge Lamp (AREA)
- Luminescent Compositions (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Projection Apparatus (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Leistungsaufnahme der Lampe | Konzentration in µmol/ml | Einsatzfeld |
bis 170 W | 0,3 bis 3,0 | Heim- bzw. Konsummarkt |
170 bis 300 W | 0,2 bis 2,0 | Geschäftsbereich |
300 bis 3000 W | 0,05 bis 1,0 | Professionelle Großbild-projektion |
Claims (19)
- Gleichstrombogenlampe mit einer Füllung aus zumindest folgenden Bestandteilen:einem Zündgas,Quecksilber undeinem Halogen,Zink
- Lampe nach Anspruch 1 mit dem Füllungsbestandteil Yttrium.
- Lampe nach Anspruch 1 oder 2 mit dem Füllungsbestandteil Lithium.
- Lampe nach einem der vorstehenden Ansprüche mit dem Füllungsbestandteil Indium.
- Lampe nach einem der vorstehenden Ansprüche mit einem Seltenerdmetall, insbesondere Dysprosium, als Füllungsbestandteil.
- Lampe nach einem der vorstehenden Ansprüche mit dem Füllungsbestandteil Thallium.
- Lampe nach einem der vorstehenden Ansprüche, bei der das Halogen in Form von Jod und/oder Brom vorliegt.
- Lampe nach einem der vorstehenden Ansprüche, wobei in Abhängigkeit von der elektrischen Leistungsaufnahme folgende Konzentrationsbereiche für Cadminium und/oder Zink insgesamt gelten:
Leistungsaufnahme der Lampe Konzentration in µmol/ml bis 170 W 0,3 bis 3,0 170 bis 300 W 0,2 bis 2,0 300 bis 3000 W 0,05 bis 1,0 - Lampe nach einem der vorstehenden Ansprüche mit einem kathodenseitigen Wärmestaubelag.
- Lampe nach einem der vorstehenden Ansprüche mit einem bezüglich Ebenen (1) senkrecht zu einer Lampenlängsachse (2) dergestalt asymmetrisch geformten Kolben, daß die Kolbeninnenwand (3) um die Anode (4) herum weiter ist als um die Kathode (5).
- Lampe nach einem der vorstehenden Ansprüche als Kurzbogenlampe.
- Lampe nach Anspruch 11, bei der eine auf die Bogenlänge (6) bezogene spezifische Leistung größer als 80 W/mm ist.
- Lampe nach einem der Ansprüche 10 - 12, bei der das Verhältnis zwischen einer anodenseitigen Längsschnitt-Halbfläche und einer kathodenseitigen Längsschnitt-Halbfläche größer als 1,1 ist, wobei die Längsschnitt-Halbflächen im Längsschnitt durch die Lampe beiderseits einer die Innenlänge eines Kolbens der Lampe mittig teilenden und auf der Lampenlängsachse (2) senkrechten Ebene liegen und die Lampenlängsachse (2) jeweils zu einer Hälfte der Kolbeninnenlänge enthalten sowie im übrigen von der Kolbeninnenwand (3) begrenzt sind.
- Lampe nach Anspruch 13, bei der das Verhältnis kleiner als 1,5 ist.
- Lampe nach einem der Ansprüche 10 -14, bei der ein anodenseitiger Längsschnitt-Krümmungsradius (8) kleiner als ein kathodenseitiger Längsschnitt-Krümmungsradius (9) ist.
- Lampe nach Anspruch 15, bei der der anodenseitige Längsschnitt-Krümmungsradius (8) 50% bis 80% des kathodenseitigen Längsschnitt-Krümmungsradius (9) beträgt.
- Lampe nach einem der vorstehenden Ansprüche als Tageslichtlampe.
- Verwendung einer Lampe nach einem der vorstehenden Ansprüche mit horizontal verlaufender Lampenlängsachse (2).
- Projektionsvorrichtung mit einer Lampe nach einem der vorstehenden Ansprüche 1 - 17 als Projektionslampe.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19714009 | 1997-04-04 | ||
DE19714009A DE19714009A1 (de) | 1997-04-04 | 1997-04-04 | Gleichstrombogenlampe |
EP98104179A EP0869537B1 (de) | 1997-04-04 | 1998-03-09 | Gleichstrombogenlampe |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104179A Division EP0869537B1 (de) | 1997-04-04 | 1998-03-09 | Gleichstrombogenlampe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1069594A2 true EP1069594A2 (de) | 2001-01-17 |
EP1069594A3 EP1069594A3 (de) | 2001-03-21 |
EP1069594B1 EP1069594B1 (de) | 2002-10-02 |
Family
ID=7825485
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104179A Expired - Lifetime EP0869537B1 (de) | 1997-04-04 | 1998-03-09 | Gleichstrombogenlampe |
EP00117488A Expired - Lifetime EP1069594B1 (de) | 1997-04-04 | 1998-03-09 | Gleichstrombogenlampe |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104179A Expired - Lifetime EP0869537B1 (de) | 1997-04-04 | 1998-03-09 | Gleichstrombogenlampe |
Country Status (4)
Country | Link |
---|---|
US (1) | US6051929A (de) |
EP (2) | EP0869537B1 (de) |
JP (1) | JPH10283992A (de) |
DE (3) | DE19714009A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012022604A1 (de) * | 2010-08-20 | 2012-02-23 | Osram Ag | Gleichstrom-entladungslampe mit asymmetrischem kolben |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001035444A1 (en) * | 1999-11-11 | 2001-05-17 | Koninklijke Philips Electronics N.V. | High-pressure discharge lamp |
JP4042605B2 (ja) * | 2003-03-31 | 2008-02-06 | ウシオ電機株式会社 | キセノンランプ |
US7759849B2 (en) | 2004-10-18 | 2010-07-20 | Heraeus Noblelight Ltd. | High-power discharge lamp |
DE102005017371A1 (de) * | 2005-04-14 | 2007-01-11 | Heraeus Noblelight Limited, Milton | Hochleistungsentladungslampe |
JP5304425B2 (ja) * | 2009-05-12 | 2013-10-02 | ウシオ電機株式会社 | 紫外線放射放電ランプ |
JP2013232311A (ja) * | 2012-04-27 | 2013-11-14 | Iwasaki Electric Co Ltd | メタルハライドランプ |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB600495A (en) * | 1945-09-24 | 1948-04-09 | Gen Electric Co Ltd | Improvements in and relating to high pressure metal vapour electric discharge lamps |
GB689962A (en) * | 1948-04-02 | 1953-04-08 | Gen Electric Co Ltd | Improvements in or relating to high pressure electric discharge lamps |
US2965790A (en) * | 1949-08-20 | 1960-12-20 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High pressure gas lamp |
FR1254794A (fr) * | 1960-04-22 | 1961-02-24 | Licentia Gmbh | Lampe à haute pression |
EP0220633A1 (de) * | 1985-10-25 | 1987-05-06 | General Electric Company | Asymmetrische Bogenkammer für eine Entladungslampe |
EP0623945A2 (de) * | 1993-05-07 | 1994-11-09 | Ushiodenki Kabushiki Kaisha | Entladungslampe |
EP0641015A2 (de) * | 1993-08-03 | 1995-03-01 | Ushiodenki Kabushiki Kaisha | Cadmiumentladungslampe |
EP0678898A2 (de) * | 1994-04-20 | 1995-10-25 | Ushiodenki Kabushiki Kaisha | Metallhalogenidlampe |
EP0714118A1 (de) * | 1994-11-25 | 1996-05-29 | Ushiodenki Kabushiki Kaisha | Metallhalogenidlampe vom Kurz-Bogen Typ |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE288229C (de) * | ||||
DE902528C (de) * | 1935-11-19 | 1954-01-25 | Ulrich W Doering | Elektrische Hochdruckentladungsleuchtroehre |
GB1337134A (en) * | 1970-01-26 | 1973-11-14 | Gen Electric | Metal halide lamp |
NL7403204A (nl) * | 1974-03-11 | 1975-09-15 | Philips Nv | Elektrische lamp. |
DE2953446C2 (de) * | 1978-12-28 | 1983-12-22 | Mitsubishi Denki K.K., Tokyo | Hochdruck-Metalldampfentladungslampe |
US4360756A (en) * | 1979-11-13 | 1982-11-23 | General Electric Company | Metal halide lamp containing ThI4 with added elemental cadmium or zinc |
DE3044184A1 (de) * | 1980-11-24 | 1982-06-16 | Mutzhas Maximilian F | Vorrichtung zur phototherapeutischen behandlung der hyperbilirubinaemie |
DE3208647A1 (de) * | 1982-03-10 | 1983-09-22 | Patra Patent Treuhand | Quecksilberdampf-hochdruckentladungslampe |
DE3506295A1 (de) * | 1985-02-22 | 1986-08-28 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Kompakte hochdruckentladungslampe |
DE3716485C1 (de) * | 1987-05-16 | 1988-11-24 | Heraeus Gmbh W C | Xenon-Kurzbogen-Entladungslampe |
US4935668A (en) * | 1988-02-18 | 1990-06-19 | General Electric Company | Metal halide lamp having vacuum shroud for improved performance |
JP3077538B2 (ja) * | 1994-11-29 | 2000-08-14 | ウシオ電機株式会社 | ショートアーク型水銀ランプ |
-
1997
- 1997-04-04 DE DE19714009A patent/DE19714009A1/de not_active Withdrawn
-
1998
- 1998-03-09 EP EP98104179A patent/EP0869537B1/de not_active Expired - Lifetime
- 1998-03-09 DE DE59806489T patent/DE59806489D1/de not_active Expired - Fee Related
- 1998-03-09 DE DE59805855T patent/DE59805855D1/de not_active Expired - Fee Related
- 1998-03-09 EP EP00117488A patent/EP1069594B1/de not_active Expired - Lifetime
- 1998-03-12 US US09/041,511 patent/US6051929A/en not_active Expired - Fee Related
- 1998-03-31 JP JP10103340A patent/JPH10283992A/ja not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB600495A (en) * | 1945-09-24 | 1948-04-09 | Gen Electric Co Ltd | Improvements in and relating to high pressure metal vapour electric discharge lamps |
GB689962A (en) * | 1948-04-02 | 1953-04-08 | Gen Electric Co Ltd | Improvements in or relating to high pressure electric discharge lamps |
US2965790A (en) * | 1949-08-20 | 1960-12-20 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High pressure gas lamp |
FR1254794A (fr) * | 1960-04-22 | 1961-02-24 | Licentia Gmbh | Lampe à haute pression |
EP0220633A1 (de) * | 1985-10-25 | 1987-05-06 | General Electric Company | Asymmetrische Bogenkammer für eine Entladungslampe |
EP0623945A2 (de) * | 1993-05-07 | 1994-11-09 | Ushiodenki Kabushiki Kaisha | Entladungslampe |
EP0641015A2 (de) * | 1993-08-03 | 1995-03-01 | Ushiodenki Kabushiki Kaisha | Cadmiumentladungslampe |
EP0678898A2 (de) * | 1994-04-20 | 1995-10-25 | Ushiodenki Kabushiki Kaisha | Metallhalogenidlampe |
EP0714118A1 (de) * | 1994-11-25 | 1996-05-29 | Ushiodenki Kabushiki Kaisha | Metallhalogenidlampe vom Kurz-Bogen Typ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012022604A1 (de) * | 2010-08-20 | 2012-02-23 | Osram Ag | Gleichstrom-entladungslampe mit asymmetrischem kolben |
Also Published As
Publication number | Publication date |
---|---|
DE19714009A1 (de) | 1998-10-08 |
EP1069594A3 (de) | 2001-03-21 |
JPH10283992A (ja) | 1998-10-23 |
DE59805855D1 (de) | 2002-11-07 |
EP1069594B1 (de) | 2002-10-02 |
US6051929A (en) | 2000-04-18 |
EP0869537A1 (de) | 1998-10-07 |
DE59806489D1 (de) | 2003-01-16 |
EP0869537B1 (de) | 2002-12-04 |
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