EP0762475B1 - Metallhalogenid-Entladungslampe für Projektionszwecke - Google Patents
Metallhalogenid-Entladungslampe für Projektionszwecke Download PDFInfo
- Publication number
- EP0762475B1 EP0762475B1 EP96112969A EP96112969A EP0762475B1 EP 0762475 B1 EP0762475 B1 EP 0762475B1 EP 96112969 A EP96112969 A EP 96112969A EP 96112969 A EP96112969 A EP 96112969A EP 0762475 B1 EP0762475 B1 EP 0762475B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- μmol
- discharge lamp
- metal halide
- metal
- halide 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
Links
- 229910001507 metal halide Inorganic materials 0.000 title claims description 23
- 150000005309 metal halides Chemical class 0.000 title claims description 23
- 239000010955 niobium Substances 0.000 claims description 19
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 10
- 150000002910 rare earth metals Chemical class 0.000 claims description 10
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 7
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 claims description 6
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052794 bromium Inorganic materials 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052689 Holmium Inorganic materials 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052792 caesium Inorganic materials 0.000 claims description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 claims description 2
- 150000002366 halogen compounds Chemical class 0.000 claims description 2
- OCVXZQOKBHXGRU-UHFFFAOYSA-N iodine(1+) Chemical compound [I+] OCVXZQOKBHXGRU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 4
- 239000002184 metal Substances 0.000 claims 4
- 239000004020 conductor Substances 0.000 claims 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims 1
- 229910052740 iodine Inorganic materials 0.000 claims 1
- 239000011630 iodine Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 206010038743 Restlessness Diseases 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- XQPRBTXUXXVTKB-UHFFFAOYSA-M caesium iodide Chemical compound [I-].[Cs+] XQPRBTXUXXVTKB-UHFFFAOYSA-M 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000001839 endoscopy Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
Definitions
- the invention relates to a metal halide discharge lamp according to the The preamble of claim 1 and the preamble of claim 6.
- Metal halide discharge lamps of this type are mainly installed in optical reflectors or other optical imaging systems. Your area of application is, for example, projection or light guide technology for overhead, slide and cinema projection as well as especially for video projection or for endoscopy and boroscopy. Accordingly, very short arcs (typical arc lengths of at most a few mm) and maximum luminance (on average more than approx. 30 kcd / cm 2 ) at color temperatures of more than 4500 K and good color rendering are required for good imaging results. Typical power values are in the range between approx. 100 W and 600 W. In addition, the temporal constancy of the location of the discharge arc within the lamp vessel is of particular importance. When the arc is unstable, the discharge arc stochastically moves out of the focus of the lamp reflector and thus impairs the quality of the optical image.
- FR-A-2130255 discloses a metal halide high-pressure discharge lamp with a wall load between 10 and 100 W / cm 2 and a specific arc power between 100 and 1000 W / cm.
- the discharge vessel contains cesium iodide and bromides of rare earth metals, in particular of dysprosium (Dy), holmium (Ho) and thulium (Tm). Furthermore, the discharge vessel contains an excess of bromine which exceeds the stoichiometric ratio of the compounds bromine / rare earth metals.
- WO 94/23441 is a metal halide discharge lamp for specific Arc power between 60 and 140 W per mm arc length with a Filling reveals that besides mercury (Hg) and an inert gas additionally halogen compounds of the elements cesium (Cs), dysprosium (Dy) and tantalum (Ta) contains.
- Hg mercury
- Cs cesium
- Dy dysprosium
- Ta tantalum
- the invention has for its object to the disadvantage mentioned eliminate and create a metal halide discharge lamp that a Color temperature of more than 4500 K - with good color rendering - as well a slight unsteady bow even with very high specific bow outputs having.
- the task formulated at the beginning can be also solve with a filling that - in contrast to the cited state of the art Technology - no Cs as a filling component.
- Nb niobium
- the Nb acts directly in the Electrode area on the arch base. Without any commitment to intend theoretical explanation it is believed that the Nb forms a mixed phase with the electrode material, which leads to arc stability contributes.
- the filling of the discharge vessel of the metal halide discharge lamp according to the invention consists of the following filling components: Nb, a rare earth metal (SE), preferably Dy, Hg, an inert gas and one or more halogens, preferably iodine (I) and / or bromine (Br) to form metal halides.
- SE rare earth metal
- Hg a rare earth metal
- I iodine
- Br bromine
- Dy can also be wholly or partly by another element the rare earths with comparable properties in gas discharge be replaced, e.g. by holmium (Ho).
- Ho holmium
- the typical filling quantity per cm 3 volume of the discharge vessel is for the rare earth metal (SE), in particular also for Dy, in the range between 0.3 ⁇ mol and 3 ⁇ mol and for Nb in the range between 0.3 ⁇ mol and 3 ⁇ mol, preferably in the range between 1 ⁇ mol and 1.5 ⁇ mol.
- the filling pressure of the inert gas serving as the ignition gas for example argon (Ar) or xenon (Xe), is typically in the range between approximately 20 kPa and 60 kPa.
- the amount of mercury is used to set the desired lamp arc voltage. It is typically in the range between approx. 5 mg and 15 mg per mm arc length for burning voltages between 30 V and 50 V.
- the discharge vessel additionally contains up to approx. 3 ⁇ mol Cs per cm 3 vessel volume.
- the filling quantity of the C is preferably in the range between 0.5 ⁇ mol and 2.5 ⁇ mol per cm 3 of vessel volume.
- This filling system is particularly suitable for the highest requirements to the arc rest and life of the lamp as well as in particular specific power densities of approx. 200 W and more per mm arc length.
- the Cs addition gives you a further degree of freedom for the lamp design. This degree of freedom can be, for example, for one Optimization of the electrode geometry with a view to a longer service life use.
- the disadvantage is, however, that with increasing Cs content the light output decreases. In individual cases, one is for the concrete value of the Cs share therefore make a suitable compromise.
- the lamp is advantageously combined with a reflector to form a structural unit, as described in DE-PS 28 40 031.
- the lamp is approximate mounted axially in the reflector.
- the reflector is e.g. dichroic coated.
- Quartz glass or a transparent ceramic material, for example Al 2 O 3, is suitable as the material for the lamp bulb.
- a discharge vessel which is closed on both sides is particularly suitable for the lamp.
- Two electrodes face each other inside the discharge vessel.
- the electrodes are each connected to a power supply that is gas-tight are led outside.
- Typical values for the specific arc power are in the range between approximately 100 W and 200 W or more per mm arc length, in particular in the range between approximately 150 W and 200 W per mm arc length. Average luminance levels of typically more than 45 kcd / cm 2 are achieved.
- the longitudinal section is one firmly connected to a reflector Metal halide discharge lamp 1 with a power of 270 W schematically shown.
- the discharge vessel 2 made of quartz glass essentially has one spherical shape and points to two diametrically opposite Place one neck each in the pin-shaped tungsten electrodes 3 are melted by means of sealing foils 4 made of molybdenum.
- the the discharge space opposite ends of the sealing foils 4 are supplied with power 5 welded, which in turn with electrical connections 6, 7 of Reflector base system are connected.
- the reflector base system exists - Except for the electrical connections 6, 7- essentially the reflector 8 and a two-part ceramic base 9, 10.
- For a more detailed Explanation of the reflector base system is on the DE-PS 28 40 031.
- the internal volume of the discharge vessel 2 enclosing an ionizable filling is approximately 0.33 cm 3 .
- the axially opposed electrodes 3 are 1.6 mm apart.
- the filling in addition to 12 mg Hg and 45 kPa Ar as the base gas, the filling consists of the further filling constituents listed in Table 1 below in the amounts specified there.
- the volume-related molar amounts of some filling components calculated from this are listed in Table 2 below.
- the specific arc power and the operating voltage are approx. 167 W per mm arc length or approx. 35 V.
- Table 3 shows the lighting values of the lamp achieved with this filling. Quantities of the components of the first filling example of the lamp. Nb 0.04 mg Dy 0.08 mg Ed 12 mg HgBr 2 0.7 mg HgI 2 0.68 mg Ar 45 kPa Volume-related molar amounts of some filling components from Table 1.
- the filling in addition to 12 mg Hg and 45 kPa Ar as the base gas, the filling consists of the further filling components listed in Table 4 below in the amounts specified there.
- the volume-related molar amounts of some filling components calculated from this are listed in Table 5 below.
- the specific arc power and the operating voltage are approx. 167 W per mm arc length or approx. 35 V.
- Table 6 shows the lighting values of the lamp achieved with this filling. Amount of components of the second filling example of the lamp.
Landscapes
- Discharge Lamp (AREA)
Description
- Figur
- eine schematische geschnittene Darstellung der Lampe mit Reflektor.
| Mengen der Komponenten des ersten Füllungsbeispiels der Lampe. | |
| Nb | 0,04 mg |
| Dy | 0,08 mg |
| Hg | 12 mg |
| HgBr2 | 0,7 mg |
| HgI2 | 0,68 mg |
| Ar | 45 kPa |
| Volumenbezogene molare Mengen einiger Füllungskomponenten aus Tabelle 1. | |
| Nb | 1,30 µmol/cm3 |
| Dy | 1,49 µmol/cm3 |
| I | 4,51 µmol/cm3 |
| Br | 6,47 µmol/cm3 |
| Mit der Füllung aus Tabelle 1 erzielte lichttechnische Werte. | |
| Lichtstrom | 17 klm |
| Lichtausbeute | 63 lm/W |
| mittlere Leuchtdichte | 50 kcd/cm2 |
| Farbtemperatur | 5000 K |
| Ra | 60 |
| Lebensdauer | > 500 h |
| Menge der Komponenten des zweiten Füllungsbeispiels der Lampe. | |
| Nb | 0,04 mg |
| Dy | 0,08 mg |
| CsI | 0,17 mg |
| Hg | 12 mg |
| HgBr2 | 0,7 mg |
| HgI2 | 0,53 mg |
| Ar | 45 kPa |
| Volumenbezogene molare Mengen einiger Füllungskomponenten aus Tabelle 4 | |
| Nb | 1,30 µmol/cm3 |
| Dy | 1,49 µmol/cm3 |
| Cs | 1,98 µmol/cm3 |
| I | 5,51 µmol/cm3 |
| Br | 6,47 µmol/cm3 |
| Mit der Füllung aus Tabelle 4 erzielte lichttechnische Werte. | |
| Lichtstrom | 16 klm |
| Lichtausbeute | 60 lm/W |
| mittlere Leuchtdichte | 50 kcd/cm2 |
| Farbtemperatur | 5000 K |
| Ra | 60 |
| Lebensdauer | > 500 h |
Claims (12)
- Metallhalogenid-Entladungslampe (1) für Projektionszwecke mit einem lichtdurchlässigen Entladungsgefäß (2) in dem sich zwei Elektroden (3) gegenüberstehen, die mit nach außen geführten Stromzuführungen (5) verbunden sind, wobei das Entladungsgefäß (2) eine ionisierbare Füllung enthält, bestehend aus Quecksilber, mindestens einem Edelgas, mindestens einem Halogen, einem Seltenerdmetall (SE) oder optional zwei Seltenerdmetallen sowie einem weiteren Metall zur Bildung von Metallhalogeniden, dadurch gekennzeichnet, daß die Füllung als weiteres Metall Niob (Nb) enthält.
- Metallhalogenid-Entladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß die Füllmenge des Nb im Bereich zwischen 0,3 µmol und 3 µmol pro cm3 des Gefäßvolumens liegt.
- Metallhalogenid-Entladungslampe nach Anspruch 2, dadurch gekennzeichnet, daß die Füllmenge des Nb vorzugsweise im Bereich zwischen 1,0 µmol und 1,5 µmol pro cm3 des Gefäßvolumens liegt.
- Metallhalogenid-Entladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß die Füllung als Seltenerdmetall Dysprosium (Dy) enthält, wobei die Füllmenge des Dy im Bereich zwischen 0,3 µmol und 3 µmol pro cm3 des Gefäßvolumens liegt.
- Metallhalogenid-Entladungslampe nach Anspruch 4, dadurch gekennzeichnet, daß das Dysprosium ganz oder teilweise durch Holmium ersetzt ist.
- Metallhalogenid-Entladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß das Entladungsgefäß als Halogene für die Halogenidverbindungen Jod (I) und Brom (Br) in einem Molverhältnis Jod zu Brom im Bereich zwischen 0,2 und 2 enthält.
- Metallhalogenid-Entladungslampe (1) für Projektionszwecke mit einem lichtdurchlässigen Entladungsgefäß (2) in dem sich zwei Elektroden (3) gegenüberstehen, die mit nach außen geführten Stromzuführungen (5) verbunden sind, wobei das Entladungsgefäß (2) eine ionisierbare Füllung enthält, bestehend aus Quecksilber (Hg), mindestens einem Edelgas, mindestens einem Halogen, Cäsium (Cs) und einem Seltenerdmetall (SE) oder optional zwei Seltenerdmetallen sowie einem weiteren Metall zur Bildung von Metallhalogeniden, dadurch gekennzeichnet, daß die Füllung als weiteres Metall Niob (Nb) enthält.
- Metallhalogenid-Entladungslampe nach Anspruch 7, dadurch gekennzeichnet, daß die Füllmenge des Nb im Bereich zwischen 0,3 µmol und 3 µmol pro cm3 des Gefäßvolumens liegt.
- Metallhalogenid-Entladungslampe nach Anspruch 7, dadurch gekennzeichnet, daß die Füllmenge des Cs pro cm3 des Gefäßvolumens in folgendem Bereich liegt: 0 µmol < Cs ≤ 3 µmol.
- Metallhalogenid-Entladungslampe nach Anspruch 9, dadurch gekennzeichnet, daß die Füllmenge des Cs pro cm3 des Gefäßvolumens vorzugsweise in folgendem Bereich liegt: 0,5 µmol ≤ Cs ≤ 2,5 µmol.
- Metallhalogenid-Entladungslampe nach Anspruch 7, dadurch gekennzeichnet, daß die Füllung als Seltenerdmetall Dysprosium (Dy) enthält, wobei die Füllmenge des Dy im Bereich zwischen 0,3 µmol und 3 µmol pro cm3 des Gefäßvolumens liegt.
- Metallhalogenid-Entladungslampe nach Anspruch 11, dadurch gekennzeichnet, daß das Dysprosium ganz oder teilweise durch Holmium ersetzt ist.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19530821 | 1995-08-23 | ||
| DE19530821A DE19530821A1 (de) | 1995-08-23 | 1995-08-23 | Metallhalogenid-Entladungslampe für Projektionszwecke |
| DE19548518 | 1995-12-22 | ||
| DE19548518A DE19548518A1 (de) | 1995-08-23 | 1995-12-22 | Metallhalogenid-Entladungslampe für Projektionszwecke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0762475A1 EP0762475A1 (de) | 1997-03-12 |
| EP0762475B1 true EP0762475B1 (de) | 1999-11-03 |
Family
ID=26017893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96112969A Expired - Lifetime EP0762475B1 (de) | 1995-08-23 | 1996-08-12 | Metallhalogenid-Entladungslampe für Projektionszwecke |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5831388A (de) |
| EP (1) | EP0762475B1 (de) |
| JP (1) | JP3993656B2 (de) |
| CA (1) | CA2182423C (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP3216877B2 (ja) * | 1997-11-18 | 2001-10-09 | 松下電子工業株式会社 | 高圧放電ランプ、この高圧放電ランプを光源とした照明光学装置、およびこの照明光学装置を用いた画像表示装置 |
| EP0944109B2 (de) * | 1998-03-16 | 2008-02-13 | Matsushita Electric Industrial Co., Ltd. | Entladungslampe und Verfahren zu deren Herstellung |
| US6888312B2 (en) * | 2002-12-13 | 2005-05-03 | Welch Allyn, Inc. | Metal halide lamp for curing adhesives |
| CN101111924B (zh) * | 2005-02-17 | 2010-06-02 | 株式会社杰士汤浅 | 额定灯功率为450w以上的陶瓷金属卤化物灯 |
| CN101523552A (zh) * | 2006-09-29 | 2009-09-02 | 皇家飞利浦电子股份有限公司 | 陶瓷金属卤化物日光灯 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2114804B2 (de) * | 1971-03-26 | 1978-09-14 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen | Quecksilberdampf-Hochdruckentladungslampe mit Zusatz von Halogeniden der Seltenen Erden |
| DE2114805A1 (de) * | 1971-03-26 | 1972-10-05 | Patra Patent Treuhand | Hochdruckentladungslampe |
| US3748520A (en) * | 1972-05-05 | 1973-07-24 | Gen Telephone & Elect | Electric discharge lamp having a fill including niobium pentaiodide complexed with an inorganic oxo-compound as the primary active component |
| US4074166A (en) * | 1976-11-19 | 1978-02-14 | Gte Sylvania Incorporated | Ultraviolet emitting arc discharge lamp |
| DE2840031A1 (de) * | 1978-09-14 | 1980-04-03 | Patra Patent Treuhand | Anordnung mit hochdruckentladungslampe und reflektor als baueinheit |
| NL8005456A (nl) * | 1980-10-02 | 1982-05-03 | Philips Nv | Hogedrukkwikdampontladingslamp. |
| DE3427280C2 (de) * | 1984-07-24 | 1986-06-12 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Metallhalogenid-Hochdruckentladungslampe |
| US4672267A (en) * | 1986-04-04 | 1987-06-09 | Gte Laboratories Incorporated | High intensity discharge device containing oxytrihalides |
| 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 |
| DE4030202A1 (de) * | 1990-09-24 | 1992-03-26 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenid-hochdruckentladungslampe |
| DE4310539A1 (de) * | 1993-03-31 | 1994-10-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenid-Hochdruckentladungslampe für den Einbau in optische Systeme |
-
1996
- 1996-07-22 US US08/681,046 patent/US5831388A/en not_active Expired - Lifetime
- 1996-07-31 CA CA002182423A patent/CA2182423C/en not_active Expired - Fee Related
- 1996-08-12 EP EP96112969A patent/EP0762475B1/de not_active Expired - Lifetime
- 1996-08-14 JP JP23251496A patent/JP3993656B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2182423C (en) | 2006-12-12 |
| EP0762475A1 (de) | 1997-03-12 |
| JP3993656B2 (ja) | 2007-10-17 |
| CA2182423A1 (en) | 1997-02-24 |
| US5831388A (en) | 1998-11-03 |
| JPH0963538A (ja) | 1997-03-07 |
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