WO2001006541A1 - Hochdruckentladungslampe - Google Patents
Hochdruckentladungslampe Download PDFInfo
- Publication number
- WO2001006541A1 WO2001006541A1 PCT/EP2000/005695 EP0005695W WO0106541A1 WO 2001006541 A1 WO2001006541 A1 WO 2001006541A1 EP 0005695 W EP0005695 W EP 0005695W WO 0106541 A1 WO0106541 A1 WO 0106541A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- individual part
- discharge lamp
- niobium
- tantalum
- pressure discharge
- Prior art date
Links
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 43
- 239000010955 niobium Substances 0.000 claims abstract description 43
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 37
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 34
- 230000003647 oxidation Effects 0.000 claims abstract description 33
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims abstract description 4
- 229910000679 solder Inorganic materials 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 11
- 238000005476 soldering Methods 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 8
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910016006 MoSi Inorganic materials 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 239000012080 ambient air Substances 0.000 description 10
- 229910001257 Nb alloy Inorganic materials 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910001507 metal halide Inorganic materials 0.000 description 5
- 150000005309 metal halides Chemical class 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000002775 capsule Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 206010010144 Completed suicide Diseases 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
Definitions
- the invention relates to a high-pressure discharge lamp with a ceramic discharge vessel, through the wall of which at least one current leadthrough is passed, the current leadthrough and the discharge vessel being connected in a gastight manner by means of a sealing compound, the current leadthrough being formed from a first individual part made of niobium, tantalum or of a niobium and / or tantalum-based alloy and at least one second item formed from a material that is more resistant to oxidation than niobium, tantalum or a niobium and / or tantalum-based alloy, the area of connection between the first and second items either is covered with the sealing compound or is formed by the sealing compound, and wherein a discharge electrode is arranged at an end of the current leadthrough arranged in the discharge vessel
- a lamp is known from EP 930 639 A1, in which a current lead-through made of a glass-tantalum mixture is used together with a quartz glass vessel, the concentration of the tantalum changing along the current lead-through
- the fusion between the current feedthrough and the quartz glass vessel occurs only in an area in which the tantalum content in SiO 2 is less than 2 vol%.
- the end of the current feedthrough which contains a high proportion of tantalum, protrudes from the quartz glass vessel and is only partially covered with an oxidation protective layer made of glass, metal oxide or noble metal.
- components made of niobium are also used as current feedthroughs for a discharge lamp.
- the use of such a discharge lamp in a temperature range of 200 - 300 ° C or in an atmosphere with a high moisture content is recommended above all in connection with an outer capsule that protects the current feedthroughs from oxidation and corrosion.
- An example shows the discharge lamp and the current feedthroughs inside a protective capsule made of glass filled with inert gas.
- the current feedthroughs are designed in such a way that the end of the current feedthrough, which projects into the discharge vessel and is in contact with the metal halide filling, is formed from corrosion-resistant tungsten, molybdenum, rhenium or from alloys of these metals.
- the present invention is based on the problem of providing a further possibility of increasing the resistance to oxidation and corrosion of current feedthroughs which are arranged in or on high-pressure discharge lamps, in particular on sodium high-pressure discharge lamps.
- the problem is solved once in that the first individual part at least partially protrudes into the discharge vessel and the second individual part at least partially protrudes from the discharge vessel, that the second individual part is immersed in a maximum of 50% of the thickness of the sealing compound and that the more oxidation-resistant material is a metal or a Metal alloy with elements from groups IVB and / or VIII of the periodic table (according to CAS).
- a great advantage of high-pressure discharge lamps with current feedthroughs designed in this way is that they can be operated without an additional external protective encapsulation, for example made of glass. So the outer dimensions of the lamp can be made significantly smaller. This is particularly important if there is little space available for the lamp at the place of use.
- the elements Ti and / or Pt and / or Pd and / or Ni and / or Fe and / or Ir are contained in the more oxidation-resistant metal and / or the more oxidation-resistant metal alloy. It has proven particularly useful if the first individual part is made of niobium and the second individual part is made of titanium.
- Table 1 Weight increase of titanium and NbZrl in (%) depending on the exposure time in air at elevated temperatures (- means: no measurement carried out)
- the problem is further solved in that the first individual part at least partially protrudes into the discharge vessel and the second individual part at least partially protrudes from the discharge vessel, that the second individual part is immersed in a maximum of 50% of the thickness of the sealing compound and that the more oxidation-resistant material is made of a ceramic , Ceramic made of Al 2 O 3 and / or MoSi 2 and / or (Mo, W) Si 2 and / or SiC and / or Si 3 N 4 is particularly preferred here. It is also a great advantage here that a lamp with current feedthroughs designed in this way can be operated without an additional external protective encapsulation, for example made of glass, and the external dimensions are thus small.
- the current feedthrough can be at least partially in the form of a cylinder and / or a tube.
- a current feedthrough for discharge lamps which has a cylinder and / or a tube made of niobium, tantalum or alloys based on niobium and / or tantalum as the first individual part, one end of this first individual part having a second individual part made of more oxidation-resistant metal and / or an oxidati - Ons resistant metal alloy is gas-tight and electrically conductive and the second individual part has the shape of a protective cap, forms a preferred embodiment.
- the current lead-through as the first individual part is a cylinder and / or a tube made of niobium, tantalum or made of niobium and / comprises or tantalum-based alloys, and is connected when one end of this first Einzeltei ⁇ les with a second item from oxidationsbe responsiblerem metal and / or an oxidative tionsbe listeningren metal alloy gas-tight and is connected when the second item in a gastight manner with a third individual part, which consists of a electrically conductive material is formed, and when the second and third individual parts are formed together as a protective cap.
- the first individual part can be electrically conductively connected to the second and third individual parts or only to the third individual part.
- a further embodiment of the discharge lamp is formed in that the current feedthrough has as the first individual part a cylinder and / or a tube made of niobium, tantalum or alloys based on niobium and / or tantalum and that one end of this first individual part has a second individual part made of ceramic is connected gas-tight and that the second individual part is gas-tightly connected to a third individual part, which is formed from an electrically conductive material, and that the second and third individual parts are formed together as a protective cap.
- the first individual part can also be electrically conductively connected only to the third individual part.
- the third individual part can be designed as a disc or cap or stopper or can be formed from an informal, curable composition.
- the electrically conductive material of the third individual part can be formed entirely or partially from Cu and / or Ag. However, it is also possible for the electrically conductive material of the third individual part to be formed entirely or partially from the same material as the second individual part.
- the individual parts can be connected, for example, by welding and / or soldering and / or squeezing and / or screwing and / or bonding and / or gluing.
- gas-tight, electrically non-conductive connections between two individual parts are formed by soldering with a glass solder.
- a crimping of the two individual parts for example after soldering, establishes the electrically conductive connection between the two.
- the particularly advantageous embodiments of the discharge lamp according to the invention already described above have current feedthroughs with two or even three individual parts and are ideally manufactured in such a way that the first and second individual parts are produced by soldering and / or squeezing and / or welding and that the second and third individual parts are connected by gluing.
- the more oxidation-resistant material used has a melting point greater than 1200 ° C. and an expansion coefficient less than or equal to 10. 10 '6 K "1 has.
- the described high-pressure discharge lamp according to the invention is particularly suitable in connection with a sodium filling in the discharge vessel, since a sodium filling attacks the part of niobium, tantalum or an alloy based on niobium or tantalum projecting into the discharge vessel less corrosively than a metal halide filling
- Fig. 1 discharge lamp with a current feedthrough from two cylindrical individual parts
- Fig. 2 discharge lamp with a current feedthrough from a first cylindrical and a second tubular, one-sided closed part
- Fig. 3 discharge lamp with a current feedthrough from two tubular individual parts and a third individual part in the form of a stopper
- Fig. 4 discharge lamp with current feedthrough from a first tubular individual part and a second tubular individual part closed on one side
- Fig. 5 discharge lamp with current feedthrough from a first tubular individual part and a second tubular individual part and a third individual part in the form of a stopper
- the discharge vessel 1 shows one of the two ends of a tubular discharge vessel 1 of a discharge lamp and a current leadthrough 2.
- the discharge vessel 1 is made of Al 2 O 3.
- the end of the discharge vessel 1 and the current leadthrough 2 are gas-tightly soldered to a glass solder 3.
- the current leadthrough 2 exists from a first, cylindrical individual part 2a, for example made of the niobium alloy NbZrl, and a second cylindrical individual part 2b, for example made of titanium
- the individual parts 2a and 2b are welded together in an electrically conductive manner here.
- the transition area between the two individual parts 2a and 2b is of that Glass solder 3 covered
- the second individual part 2b protrudes from the discharge vessel and is in direct contact with the ambient air
- the first individual part 2a from NbZrl protrudes into the discharge vessel 1 and is therefore not exposed to direct contact with the ambient air, protected against oxidation
- FIG. 2 shows, as already shown in FIG. 1, one of the two ends of a tubular Al 2 O 3 discharge vessel 1 of a discharge lamp and a current lead-through 2.
- the end of the discharge vessel 1 and the current lead-through 2 are soldered gas-tight to a glass solder 3.
- the current lead-through 2 consists of one The first, cylindrical individual part 2a, for example made of the niobium alloy NbZrl, and a second tubular individual part 2b, for example made of titanium.
- the tubular individual part 2b is closed on one side.
- the individual parts 2a and 2b are electrically connected here by squeezing.
- the aisle area between the two individual parts 2a and 2b is covered by the glass solder 3 and soldered gas-tight.
- the second individual part 2b protrudes from the discharge vessel and is in direct contact with the ambient air
- the first individual part 2a made of NbZrl protrudes into the discharge vessel 1 and the second tubular single part 2b, which is closed on one side, and is therefore not exposed to direct contact with the ambient air, protected against oxidation.
- the 3 also shows one of the two tubular ends of an Al 2 O 3 discharge vessel 1 of a discharge lamp and a current lead-through 2.
- the end of the discharge vessel 1 and the current lead-through 2 are soldered gas-tight by a glass solder 3.
- the current feedthrough 2 consists of a first, tubular individual part 2a, for example made of the niobium alloy NbZrl, and a second tubular individual part 2b, for example made of titanium.
- the tubular individual part 2b is closed on one side with a third individual part in the form of a stopper 2c.
- the individual parts 2a and 2b are electrically connected here by welding.
- the transition area between the two individual parts 2a and 2b is covered by the glass solder 3.
- the second individual part 2b with the third individual part designed as a stopper 2c protrudes from the discharge vessel and is in direct contact with the ambient air, while the first individual part 2a from NbZrl protrudes into the discharge vessel 1 and is therefore not exposed to direct contact with the ambient air in an oxidation-protected manner.
- the electrically conductive connection between the second individual part 2b and the third individual part designed as a plug 2c can be selected depending on the temperature load and is glued here, for example.
- the material for the third individual part in the form of a stopper 2c is made of silver, for example.
- FIG. 4 also shows one of the two ends of a tubular Al 2 O 3 discharge vessel 1 of a discharge lamp and a current feedthrough 2a; 2 B.
- the end of the discharge vessel 1 and the current feedthrough 2a; 2b are soldered gas-tight by a glass solder 3.
- the current feedthrough 2a; 2b consists of a first, tubular individual part 2a, for example made of the niobium alloy NbZrl, and a second tubular individual part 2b, closed on one side, for example made of titanium.
- the individual parts 2a and 2b are here gas-tight by soldering to the glass solder 3, but not electrically connected.
- the transition area between the two individual parts 2a and 2b is covered by the glass solder 3.
- the second individual part 2b protrudes from the discharge vessel and is in direct contact with the ambient air
- the first individual part 2a made of NbZrl protrudes into the discharge vessel 1 and the second tubular single part 2b, which is closed on one side, and is therefore not exposed to direct contact with the ambient air, protected against oxidation.
- the electrically conductive connection between the second individual part 2b and the first individual part 2a here made by a crimp connection, indicated by the arrows, only after soldering with the glass solder 3.
- the current feedthrough 2 consists of a first, tubular individual part 2a, for example of the niobium alloy NbZrl, and a second tubular individual part 2b, for example of Al 2 O 3 .
- the tubular individual part 2b is closed on one side with a third individual part in the form of a stopper 2c.
- the individual parts 2a and 2b are here gas-tight by soldering to the glass solder 3, but not electrically connected.
- the transition area between the two individual parts 2a and 2b is covered by the glass solder 3.
- the second individual part 2b with the third individual part designed as a stopper 2c protrudes from the discharge vessel and is in direct contact with the ambient air
- the first individual part 2a from NbZrl protrudes into the discharge vessel 1 and is therefore not exposed to direct contact with the ambient air in an oxidation-protected manner.
- the electrically conductive connection between the first individual part 2a and the plug 2c and the gas-tight connection between the second individual part 2b and the third individual part 2c can be selected depending on the temperature load and are connected here, for example, with a conductive adhesive.
- the choice of material for the third individual part in the form of the plug 2c can be selected depending on the requirement, for example from the metals silver or titanium.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50015489T DE50015489D1 (de) | 1999-07-20 | 2000-06-21 | Hochdruckentladungslampe |
EP00943843A EP1114438B1 (de) | 1999-07-20 | 2000-06-21 | Hochdruckentladungslampe |
JP2001511713A JP2003505834A (ja) | 1999-07-20 | 2000-06-21 | 高圧放電ランプ |
US09/787,649 US6414451B1 (en) | 1999-07-20 | 2000-06-21 | High-pressure discharge lamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19933154.5 | 1999-07-20 | ||
DE19933154A DE19933154B4 (de) | 1999-07-20 | 1999-07-20 | Entladungslampe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001006541A1 true WO2001006541A1 (de) | 2001-01-25 |
Family
ID=7914876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/005695 WO2001006541A1 (de) | 1999-07-20 | 2000-06-21 | Hochdruckentladungslampe |
Country Status (5)
Country | Link |
---|---|
US (1) | US6414451B1 (de) |
EP (1) | EP1114438B1 (de) |
JP (1) | JP2003505834A (de) |
DE (2) | DE19933154B4 (de) |
WO (1) | WO2001006541A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE459095T1 (de) * | 2002-11-25 | 2010-03-15 | Koninkl Philips Electronics Nv | Hockdruckgasentladungslampe und verfahren zur herstellung |
US6856079B1 (en) | 2003-09-30 | 2005-02-15 | Matsushita Electric Industrial Co., Ltd. | Ceramic discharge lamp arc tube seal |
DE102004015467B4 (de) * | 2004-03-26 | 2007-12-27 | W.C. Heraeus Gmbh | Elektrodensystem mit einer Stromdurchführung durch ein Keramikbauteil |
US7164232B2 (en) * | 2004-07-02 | 2007-01-16 | Matsushita Electric Industrial Co., Ltd. | Seal for ceramic discharge lamp arc tube |
US7358674B2 (en) * | 2004-07-27 | 2008-04-15 | General Electric Company | Structure having electrodes with metal core and coating |
US7511429B2 (en) | 2006-02-15 | 2009-03-31 | Panasonic Corporation | High intensity discharge lamp having an improved electrode arrangement |
ES2348844T3 (es) * | 2006-12-18 | 2010-12-15 | Koninklijke Philips Electronics N.V. | Lampara de descarga de alta presion con un recipiente de descarga ceramico. |
DE102007046899B3 (de) * | 2007-09-28 | 2009-02-12 | W.C. Heraeus Gmbh | Stromdurchführung durch Keramikbrenner in Halogen-Metalldampflampen |
US8310157B2 (en) * | 2008-09-10 | 2012-11-13 | General Electric Company | Lamp having metal conductor bonded to ceramic leg member |
WO2011121565A1 (en) * | 2010-04-02 | 2011-10-06 | Koninklijke Philips Electronics N.V. | Ceramic metal halide lamp with feedthrough comprising an iridium wire |
DE112011104641A5 (de) | 2011-05-17 | 2013-10-02 | Osram Gmbh | Hochdruckentladungslampe |
WO2014012575A1 (de) | 2012-07-16 | 2014-01-23 | Osram Gmbh | Hochdruckentladungslampe mit glaslotgedichteter durchführung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4221987A (en) * | 1974-12-20 | 1980-09-09 | Egyesult Izzolampa Es Villamossagi Reszvenytarsasag | High-pressure discharge tube operable in the open air without outer protective envelope |
JPS6081756A (ja) * | 1983-10-11 | 1985-05-09 | Toshiba Corp | 金属蒸気放電灯 |
JPH05334996A (ja) * | 1992-05-29 | 1993-12-17 | Toto Ltd | 金属蒸気放電灯の封止部構造 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1197982B (de) * | 1962-11-30 | 1965-08-05 | Engelhard Hanovia Inc | Elektrode fuer eine elektrische Hochdruck-entladungslampe |
HU202013B (en) * | 1985-07-02 | 1991-01-28 | Tungsram Reszvenytarsasag | Impulsed inert gas discharge lamp |
DE8628310U1 (de) * | 1986-10-23 | 1989-06-22 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München | Einschmelzung für eine Hochdruckentladungslampe |
JPH079792B2 (ja) | 1986-11-27 | 1995-02-01 | 日本電池株式会社 | 金属蒸気放電灯 |
DE4031117A1 (de) * | 1990-10-02 | 1992-04-09 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Hochdruckentladungslampe und verfahren zur herstellung der lampe |
US5404078A (en) * | 1991-08-20 | 1995-04-04 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh | High-pressure discharge lamp and method of manufacture |
DE4127555A1 (de) * | 1991-08-20 | 1993-02-25 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Hochdruckentladungslampe |
ES2150433T3 (es) * | 1992-09-08 | 2000-12-01 | Koninkl Philips Electronics Nv | Lampara de descarga de alta presion. |
BE1007713A3 (nl) * | 1993-11-09 | 1995-10-03 | Philips Electronics Nv | Elektrische lamp. |
DE4338377A1 (de) * | 1993-11-10 | 1995-05-11 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenidentladungslampe mit keramischem Entladungsgefäß und Herstellverfahren für eine derartige Lampe |
CA2164973A1 (en) * | 1994-04-13 | 1995-10-26 | Nancy Jean Caruso | Metal halide lamp |
DE69824824T2 (de) | 1997-04-11 | 2005-07-07 | Ushio Denki K.K. | Dichtung eines lampenkolben |
US6169366B1 (en) * | 1997-12-24 | 2001-01-02 | Ngk Insulators, Ltd. | High pressure discharge lamp |
-
1999
- 1999-07-20 DE DE19933154A patent/DE19933154B4/de not_active Expired - Fee Related
-
2000
- 2000-06-21 JP JP2001511713A patent/JP2003505834A/ja active Pending
- 2000-06-21 EP EP00943843A patent/EP1114438B1/de not_active Expired - Lifetime
- 2000-06-21 WO PCT/EP2000/005695 patent/WO2001006541A1/de active Application Filing
- 2000-06-21 US US09/787,649 patent/US6414451B1/en not_active Expired - Fee Related
- 2000-06-21 DE DE50015489T patent/DE50015489D1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4221987A (en) * | 1974-12-20 | 1980-09-09 | Egyesult Izzolampa Es Villamossagi Reszvenytarsasag | High-pressure discharge tube operable in the open air without outer protective envelope |
JPS6081756A (ja) * | 1983-10-11 | 1985-05-09 | Toshiba Corp | 金属蒸気放電灯 |
JPH05334996A (ja) * | 1992-05-29 | 1993-12-17 | Toto Ltd | 金属蒸気放電灯の封止部構造 |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 009, no. 220 (E - 341) 6 September 1985 (1985-09-06) * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 158 (E - 1525) 16 March 1994 (1994-03-16) * |
Also Published As
Publication number | Publication date |
---|---|
JP2003505834A (ja) | 2003-02-12 |
US6414451B1 (en) | 2002-07-02 |
EP1114438B1 (de) | 2008-12-17 |
DE19933154A1 (de) | 2001-02-01 |
DE50015489D1 (de) | 2009-01-29 |
EP1114438A1 (de) | 2001-07-11 |
DE19933154B4 (de) | 2006-03-23 |
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