EP0990262B1 - Entladungslampe mit dielektrisch behinderten elektroden - Google Patents
Entladungslampe mit dielektrisch behinderten elektroden Download PDFInfo
- Publication number
- EP0990262B1 EP0990262B1 EP99911602A EP99911602A EP0990262B1 EP 0990262 B1 EP0990262 B1 EP 0990262B1 EP 99911602 A EP99911602 A EP 99911602A EP 99911602 A EP99911602 A EP 99911602A EP 0990262 B1 EP0990262 B1 EP 0990262B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrodes
- discharge
- lamp according
- discharge vessel
- wall
- 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
- 239000011261 inert gas Substances 0.000 claims abstract 3
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052724 xenon Inorganic materials 0.000 claims description 5
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims 3
- 239000000463 material Substances 0.000 claims 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 14
- 230000005855 radiation Effects 0.000 description 10
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 229910052756 noble gas Inorganic materials 0.000 description 5
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910052771 Terbium Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- PDWBGRKARJFJGI-UHFFFAOYSA-N 2-phenylcyclohexa-2,4-dien-1-one Chemical compound O=C1CC=CC=C1C1=CC=CC=C1 PDWBGRKARJFJGI-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
Definitions
- the invention is based on a discharge lamp according to the preamble of claim 1.
- the invention also relates to a lighting system according to the preamble of claim 14 with this discharge lamp.
- the outer wall serves under other than dielectric layer, which during the operation of the lamp separates the electrodes from the discharge. This type of discharge is called hence double-sided dielectric discharge.
- the spectrum of the electromagnetic emitted by this lamp Radiation can affect both the visible area and the UV (ultraviolet) / VUV (vacuum ultraviolet) range and the IR (infrared) range include.
- a phosphor layer can also be used for conversion be made invisible in visible radiation.
- tubular Discharge vessel sealed on both sides.
- the cross section of the discharge vessel is preferably circular. However, they are only approximate circular cross-sections, for example regular polygons, e.g. Secksecke etc.
- tubular is not just tubular here Discharge vessels limited but also includes curved, for example angled, tubular discharge tubes. Because the discharge direction runs essentially perpendicular to the lamp longitudinal axis there is also no general limit on the length of the lamp.
- OA O ffice A utomation
- the signal light for example as brake and turn signal light in automobiles
- auxiliary lighting including interior lighting of motor vehicles
- Backlighting of displays for example liquid crystal displays, used as so-called "edge type backlights”.
- a noble gas discharge lamp is already known from the document US Pat. No. 5,117,160 OA devices known.
- On the outer surface of the wall of a tubular discharge vessel are two strip-shaped electrodes along the longitudinal axis of the lamp arranged.
- the lamp is preferred with AC voltage Frequency operated between 20 kHz and 100 kHz. Operational the 147 nm xenon line is excited. The one with the operating mode used achievable radiation efficiency and consequently the resulting Luminance is relatively low.
- EP-A-0 766 286 there is a rare gas discharge lamp with a tubular one Discharge vessel disclosed.
- the discharge vessel is on the outer wall with three or more strip-like electrodes parallel to the longitudinal axis Mistake. With the exception of one intended for light emission strip-like areas parallel to the longitudinal axis cover the strip-like areas Electrodes cover almost the entire remaining surface area of the discharge tube.
- the strip-like electrodes are relatively narrow from each other Separate areas that are filled with insulating material. Thereby are supposed to cause sliding discharges on the outer wall between the individual strip-like Electrodes are prevented.
- the term "pair of electrodes” is first introduced. Below that are two lines to each other understand parallel electrodes with different polarities during operation, between which a “discharge level” burns during operation.
- the discharge plane is a planar discharge structure that consists of a large number of individual discharges.
- the discharge lamp has three or more line-like electrodes which are arranged on the outer wall of the tubular discharge vessel of the lamp and parallel to the longitudinal axis of the tubular discharge vessel in such a way that the following relationship is fulfilled: s a ⁇ 0.1, where s defines the maximum distance that the imaginary connecting line of an electrode pair has to the next adjacent wall of the discharge vessel and where a defines the mutual distance of the electrodes of this electrode pair (measured in the center from the electrodes).
- FIG. 6 shows the maximum distance s that the imaginary connecting line 20 of a pair of electrodes 3, 4 or 3, 5 has to the next-adjacent wall of the discharge vessel 2, using the example of a discharge lamp 1 with three electrodes 3 - 3. 5 shows schematically.
- At least two discharge levels are generated, which are: between corresponding pairs of electrodes and along the longitudinal axis extend the discharge vessel.
- this level are a variety of Single discharges lined up alongside each other along the electrodes, which are in the Borderline transition into a kind of curtain-like discharge form.
- the discharge planes can also have a common electrode, for example in the case of three electrodes in which the two electrodes same polarity, only a common counter electrode with an opposite one Have polarity. In other words, two are shared in this case Electrode pairs a common electrode. This is preferred for unipolar ones Voltage pulses are the cathode and the other two electrodes switched as anodes. To increase the luminance of the lamp can increase further discharge levels within the discharge vessel be generated.
- these are preferably arranged, viewed in cross section, at least approximately at the corner points of an imaginary isosceles or equilateral triangle.
- the latter case has the advantage that the lamp can be manufactured relatively easily, since the lamp only has to be rotated through 120 ° in order to apply the second and third electrodes.
- the quotient s / a always has the value 1 / (2 3 ) ⁇ 0.29, regardless of the lamp diameter, and consequently fulfills the relationship mentioned above.
- the arrangement in the form of an isosceles triangle has the advantage that larger striking distances (and therefore higher electrical power coupling, see below) can be achieved for the two discharge levels, provided that the angle formed by the two discharge levels is chosen to be less than 120 °.
- two independent discharge levels can be created or realize three discharge levels with a common electrode, depending on whether the four electrodes as unipolar excitation two cathodes and two anodes or as one cathode and three anodes (or an anode and three cathodes) are connected.
- the electrode arrangement according to the invention enables relatively high filling pressures of the active discharge gas, typically approximately 20 kPa (150 torr) and more, without any discharge instabilities, for example discharge arcs, which are detrimental to efficient useful radiation generation.
- a noble gas, in particular xenon, or a noble gas mixture, for example xenon and krypton, is suitable as the active gas filling within the discharge vessel.
- a buffer gas can be added to the active discharge gas, which is not directly involved in the generation of radiation, for example neon.
- Excimers for example Xe 2 * excimers, are produced in the discharge as particles which emit electromagnetic radiation.
- Each outer wall electrode is as an electrically conductive, line-like Stripes formed - but which also have a substructure can - and parallel to the longitudinal axis of the tubular discharge vessel oriented.
- the width of a strip is typically approx. 1 mm and less. In this way, shadowing by three or more electrodes kept small even with small diameter lamps. To the others have shown that this results in higher efficiency in the production of useful radiation is achieved.
- the inner wall can have a phosphor layer.
- one or more reflection layers for visible light for example made of Al 2 O 3 and / or TiO 2 , can be applied below the phosphor layer. This may prevent some of the light emitted by the phosphor layer from being transmitted through the vessel wall. Rather, the light is essentially directed onto the aperture by reflection or multiple reflection and consequently the luminance is increased there.
- the phosphor layer itself can also be additionally used as a reflection layer by applying the phosphor layer with a sufficient thickness. In both cases, only a strip-shaped aperture remains uncoated or is only coated with a relatively thin phosphor layer. As a result, the aperture has an increased luminance during operation.
- the lamp may be advantageous to use the lamp with transparent electrical insulation, e.g. with a see-through Plastic shrink tubing, protective varnish or similar to encase.
- FIG. 1 shows a cross section of an aperture fluorescent lamp 1 for OA applications in a highly schematic representation.
- the lamp 1 consists essentially of a tubular Discharge vessel 2 with a circular cross section and a first, a second and a third strip-shaped electrode 3-5.
- the inner wall of the discharge vessel 2 points with the exception of a rectangular one Aperture 6 has a reflection layer 7.
- On this reflective layer 7 as well the inner wall in the area of the aperture 6 is a phosphor layer 8 applied.
- the discharge vessel 2 is dome-shaped at both ends sealed gastight (not shown). Inside the discharge vessel 2 Xenon is at a fill pressure of approximately 21.33 kPa (160 torr).
- the three electrodes 3-5 are designed as metal foil strips.
- the first The electrode is provided as a cathode 3 and the other two as anodes 4, 5 (unipolar operation).
- the electrodes 3-5 are viewed in cross section at the corner points of an imaginary isosceles triangle on the outer wall of the discharge vessel 2 arranged. Consequently, in the pulsed operation according to US Pat. No. 5,604,410 two levels with dielectric disabled single discharges from (not shown).
- a first level of discharge extends within the discharge vessel 2 between the Cathode strip 3 and the first anode strip 4.
- the other level of discharge extends accordingly between the cathode strip 3 and the second anode strip 5.
- the respective width of the anode strips 4, 5 is 0.9 mm.
- the width of the cathode strip 3 is 0.8 mm.
- the outer diameter of the tubular discharge vessel 2 made of glass is approximately 9 mm with a wall thickness of approximately 0.5 mm.
- the width and length of the aperture 6 are approximately 6.5 mm and 255 mm, respectively.
- the lamp in Figure 2 - similar features are given the same reference numerals as designated in Figure 1 - has four outer wall electrodes 9-12 on. Of these, two are electrodes as cathodes 9, 10 and the rest two electrodes are provided as anodes 11, 12.
- the two pairs of electrodes 9, 12 and 10, 11 are arranged on the outer wall such that the both discharge levels burning during operation between a pair of electrodes (not shown) are oriented parallel to each other. adversely is the slightly shorter stroke distance compared to FIG. Indeed this electrically symmetrical arrangement is well suited for a bipolar Business.
- the aperture 6 is arranged centrally between a pair of electrodes such that the surface normal over large areas of the aperture 6 quasi is oriented perpendicular to the two discharge planes.
- the lamp from FIG. 2 is intended for automotive lighting and depending on the phosphor used, for example as a brake light or Flashing light.
- the lamp in Figure 3 differs from that in Figure 1 by another Electrode 13, which is arranged between the two anodes and also is provided as an anode.
- a total of three discharge levels are thus formed, in each case between the first cathode 3 and one of the three anodes 4, 13 and 5.
- the inner wall of the discharge vessel 2 has a phosphor layer 6 on. There is no reflection layer or aperture here.
- FIG. 4 shows a lighting system for OA devices.
- the aperture fluorescent lamp 1 from FIG. 1 additionally points at its second end a base 14.
- the base 14 consists essentially of a Socket pot 15 and two connecting pins 16a, 16b.
- the base pot 15 serves primarily the inclusion of the lamp 1.
- the outer wall cathode 3 and the anodes 4 and 5 from Discharge vessel 2 covered and therefore not visible
- the connector pins 16a, 16b are in turn connected to the two via electrical lines 17a, 17b Poles 18a and 18b of a pulse voltage source 19 connected.
- the pulse voltage source 19 supplies a sequence of unipolar voltage pulses with pulse heights of approximately 3 kV and with a repetition frequency of 80 kHz.
- the pulse duration is approx. 1.1 ⁇ s each.
- a luminance of approx. 45000 cd / m 2 is achieved with a power consumption of 10 W.
- FIG. 5 shows the luminance L [cd / m 2 ] measured by the aperture in arbitrary units as a function of the time-averaged electrical power P in W.
- Curve 20 relates to an illumination system according to FIG. 4 with the operating parameters specified there and three outer wall electrodes.
- Curve 21 relates to a comparable lamp with only two electrodes. From the figure it can be seen qualitatively that the lamp according to the invention with three electrodes achieves a significantly higher luminance than the conventional lamp with electrical powers of more than 10 W. In addition, curve 20 rises even with an electrical power of 20 W, whereas curve 21 already flattens slightly, ie shows a saturation behavior.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Description
- Fig. 1
- einen Querschnitt durch eine erfindungsgemäße Leuchtstofflampe mit Apertur und mit drei Außenwandungselektroden,
- Fig. 2
- einen Querschnitt durch eine erfindungsgemäße Leuchtstofflampe mit Apertur und mit vier Außenwandungselektroden,
- Fig. 3
- ähnlich Figur 2, aber mit geänderter Anordnung der Elektroden und Polaritätsverteilung,
- Fig. 4
- ein Beleuchtungssystem mit der Apertur-Leuchtstofflampe aus Figur 1 und Impulsspannungsquelle,
- Fig. 5
- qualitativen Vergleich zweier Meßkurven der Lampe aus Figur 1 mit einer Lampe mit nur zwei Außenwandungselektroden.
- Fig. 6
- eine schematische Prinzipskizze zur Erläuterung des maximalen Abstands s, den die gedachte Verbindungslinie eines Elektrodenpaares zur nächstbenachbarten Wand des Entladungsgefäßes aufweist.
Claims (15)
- Entladungslampe (1) mit einem zumindest teilweise transparenten und mit einer Gasfüllung gefüllten geschlossenen rohrförmigen Entladungsgefäß (2) und mit einer Anzahl, parallel zur Längsachse des rohrförmigen Entladungsgefäßes (2) und auf der Außenwandung dieses Entladungsgefäßes (2) angeordneten Elektroden (3-5, 9-12, 13), dadurch gekennzeichnet, daßwobei s den maximalen Abstand definiert, den die gedachte Verbindungslinie (20) eines Elektrodenpaares (3, 4; 3, 5) zur nächstbenachbarten Wand des Entladungsgefäßes (2) aufweist und wobei a den gegenseitigen Abstand der Elektroden dieses Elektrodenpaares definiert.die Elektroden (3-5, 9-12) linienartig sinddie Anzahl der Elektroden (3-5, 9-12) drei oder mehr beträgt und folgende Beziehung erfüllt ist:s / a ≥ 0,1
- Entladungslampe nach Anspruch 1, wobei s / a ≥ 0,2 ist, besonders bevorzugt > 0,25.
- Entladungslampe nach Anspruch 1 oder 2, wobei die Anzahl der Elektroden der einen Polarität (3) verschieden von der Anzahl der Elektroden der anderen Polarität (4, 5, 13) ist.
- Entladungslampe nach Anspruch 3, wobei die Anzahl der Elektroden genau drei beträgt.
- Entladungslampe nach Anspruch 4, wobei im Querschnitt betrachtet die Elektroden (3-5) zumindest näherungsweise an den Eckpunkten eines gedachten gleichseitigen Dreiecks angeordnet sind.
- Entladungslampe nach Anspruch 4, wobei im Querschnitt betrachtet die Elektroden zumindest näherungsweise an den Eckpunkten eines gedachten gleichschenkeligen Dreiecks angeordnet sind.
- Leuchtstofflampe nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Gasfüllung aus einem Edelgas oder Edelgasgemisch besteht.
- Leuchtstofflampe nach Anspruch 7, dadurch gekennzeichnet, daß der Fülldruck mehr als 13 kPa beträgt.
- Leuchtstofflampe nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die Gasfüllung Xenon enthält.
- Entladungslampe nach einem oder mehreren der vorstehenden Ansprüche, wobei die Breite der Elektroden 1 mm oder weniger beträgt.
- Entladungslampe nach einem oder mehreren der vorstehenden Ansprüche, wobei das Entladungsgefäß (2) auf seiner Wandung zumindest teilweise eine Schicht eines Leuchtstoffes oder Leuchtstoffgemisches (8) und optional zusätzlich eine Reflexionsschicht (7) aufweist.
- Leuchtstofflampe nach Anspruch 11, wobei die Wandung des Entladungsgefäßes (2) eine Apertur (6) aufweist, die zumindest von der Reflexionsschicht (7) ausgenommen ist.
- Leuchtstofflampe nach einem oder mehreren der vorstehenden Ansprüche, wobei das rohrförmige Entladungsgefäß (2) einen kreisförmigen Querschnitt mit einem Innendurchmesser von weniger als 20 mm, insbesondere weniger als 15 mm, aufweist.
- Beleuchtungssystem mit einer Leuchtstofflampe (1) nach einem der Ansprüche 1-13 und einer elektrischen Impulsspannungsquelle (19), die geeignet ist, im Betrieb durch Pausen voneinander getrennte Wirkleistungspulse zu liefern, dadurch gekennzeichnet, daß die Leuchtstofflampe (1) Merkmale eines oder mehrerer der Ansprüche 1 bis 13 aufweist, wobei die Impulsspannungsquelle (19) mit den beiden äußeren Stromzuführungen (17a, 17b) der Leuchtstofflampe (1) elektrisch leitend verbunden ist.
- Beleuchtungssystem nach Anspruch 14, gekennzeichnet durch folgende Betriebsparameter:Wiederholfrequenz der Wirkleistungspulse größer oder gleich 20 kHzPulsdauer der Wirkleistungspulse kleiner 2 µs.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19817475 | 1998-04-20 | ||
| DE19817475A DE19817475B4 (de) | 1998-04-20 | 1998-04-20 | Entladungslampe mit dielektrisch behinderten Elektroden sowie Beleuchtungssystem mit einer solchen Entladungslampe |
| PCT/DE1999/000450 WO1999054917A1 (de) | 1998-04-20 | 1999-02-18 | Entladungslampe mit dielektrisch behinderten elektroden |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0990262A1 EP0990262A1 (de) | 2000-04-05 |
| EP0990262B1 true EP0990262B1 (de) | 2004-04-14 |
Family
ID=7865124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99911602A Expired - Lifetime EP0990262B1 (de) | 1998-04-20 | 1999-02-18 | Entladungslampe mit dielektrisch behinderten elektroden |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6310442B1 (de) |
| EP (1) | EP0990262B1 (de) |
| JP (1) | JP2002505801A (de) |
| KR (1) | KR100602395B1 (de) |
| AT (1) | ATE264547T1 (de) |
| CA (1) | CA2294850C (de) |
| DE (2) | DE19817475B4 (de) |
| HU (1) | HU224080B1 (de) |
| TW (1) | TW434641B (de) |
| WO (1) | WO1999054917A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6541924B1 (en) * | 2000-04-14 | 2003-04-01 | Macquarie Research Ltd. | Methods and systems for providing emission of incoherent radiation and uses therefor |
| DE10133326A1 (de) * | 2001-07-10 | 2003-01-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dielektrische Barrieren-Entladungslampe mit Zündhilfe |
| US6946794B2 (en) * | 2001-11-22 | 2005-09-20 | Matsushita Electric Industrial Co., Ltd. | Light source device and image reader |
| DE102004047373A1 (de) * | 2004-09-29 | 2006-04-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Beleuchtungssystem mit dielektrisch behinderter Entladungslampe und zugehörigem Vorschaltgerät |
| DE102004047375A1 (de) * | 2004-09-29 | 2006-04-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dielektrische behinderte Entladungslampe mit Manschette |
| DE102004047376A1 (de) * | 2004-09-29 | 2006-04-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dielektrisch behinderte Entladungslampe mit steckbaren Elektroden |
| US7303307B2 (en) * | 2004-10-06 | 2007-12-04 | Osram Sylvania Inc. | Electrodeless lamp with incorporated reflector |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792732A (en) * | 1987-06-12 | 1988-12-20 | United States Of America As Represented By The Secretary Of The Air Force | Radio frequency plasma generator |
| DE4010809A1 (de) * | 1989-04-11 | 1990-10-18 | Asea Brown Boveri | Hochleistungsstrahler |
| US5117160C1 (en) * | 1989-06-23 | 2001-07-31 | Nec Corp | Rare gas discharge lamp |
| JP3532578B2 (ja) * | 1991-05-31 | 2004-05-31 | 三菱電機株式会社 | 放電ランプおよびこれを用いる画像表示装置 |
| JPH05242870A (ja) * | 1992-02-28 | 1993-09-21 | Mitsubishi Electric Corp | 放電ランプ |
| DE4311197A1 (de) | 1993-04-05 | 1994-10-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zum Betreiben einer inkohärent strahlenden Lichtquelle |
| WO1994027312A1 (en) * | 1993-05-12 | 1994-11-24 | Rae Systems, Inc. | Gas discharge lamp |
| JP3149780B2 (ja) * | 1995-03-31 | 2001-03-26 | ウシオ電機株式会社 | 外部電極式蛍光放電管 |
| EP0836220B1 (de) * | 1996-04-30 | 2002-07-17 | Ushio Denki Kabushiki Kaisha | Leuchtstofflampe mit äusserer elektrode und beleuchtungseinheit |
-
1998
- 1998-04-20 DE DE19817475A patent/DE19817475B4/de not_active Expired - Fee Related
-
1999
- 1999-02-18 US US09/445,696 patent/US6310442B1/en not_active Expired - Lifetime
- 1999-02-18 JP JP55228199A patent/JP2002505801A/ja active Pending
- 1999-02-18 WO PCT/DE1999/000450 patent/WO1999054917A1/de not_active Ceased
- 1999-02-18 DE DE59909153T patent/DE59909153D1/de not_active Expired - Lifetime
- 1999-02-18 AT AT99911602T patent/ATE264547T1/de not_active IP Right Cessation
- 1999-02-18 EP EP99911602A patent/EP0990262B1/de not_active Expired - Lifetime
- 1999-02-18 HU HU0002504A patent/HU224080B1/hu not_active IP Right Cessation
- 1999-02-18 KR KR1019997012061A patent/KR100602395B1/ko not_active Expired - Fee Related
- 1999-02-18 CA CA002294850A patent/CA2294850C/en not_active Expired - Fee Related
- 1999-03-17 TW TW088104168A patent/TW434641B/zh not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0990262A1 (de) | 2000-04-05 |
| KR100602395B1 (ko) | 2006-07-20 |
| HUP0002504A2 (hu) | 2000-11-28 |
| TW434641B (en) | 2001-05-16 |
| DE19817475A1 (de) | 1999-10-28 |
| JP2002505801A (ja) | 2002-02-19 |
| HUP0002504A3 (en) | 2001-12-28 |
| DE59909153D1 (de) | 2004-05-19 |
| CA2294850A1 (en) | 1999-10-28 |
| DE19817475B4 (de) | 2004-04-15 |
| WO1999054917A1 (de) | 1999-10-28 |
| ATE264547T1 (de) | 2004-04-15 |
| US6310442B1 (en) | 2001-10-30 |
| HU224080B1 (hu) | 2005-05-30 |
| CA2294850C (en) | 2007-09-25 |
| KR20010014032A (ko) | 2001-02-26 |
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