EP1506567A2 - Dielectric barrier discharge lamp with a base - Google Patents
Dielectric barrier discharge lamp with a baseInfo
- Publication number
- EP1506567A2 EP1506567A2 EP03752699A EP03752699A EP1506567A2 EP 1506567 A2 EP1506567 A2 EP 1506567A2 EP 03752699 A EP03752699 A EP 03752699A EP 03752699 A EP03752699 A EP 03752699A EP 1506567 A2 EP1506567 A2 EP 1506567A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- dielectric barrier
- lamp
- discharge lamp
- barrier discharge
- tube
- 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
- 230000004888 barrier function Effects 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000003071 parasitic effect Effects 0.000 abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000010453 quartz Substances 0.000 description 8
- 229910052697 platinum Inorganic materials 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
- H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
- H01J5/56—Shape of the separate part
-
- 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
Definitions
- the invention is based on a dielectric barrier discharge lamp.
- dielectric barrier discharge lamp encompasses sources of electromagnetic radiation based on dielectrically impeded gas discharges.
- the spectrum of the radiation can cover the visible range as well as the UV (ultraviolet) / VUV (vacuum ultraviolet) range and the IR
- a phosphor layer can also be provided for converting VUV radiation into radiation with longer wavelengths, for example UVA or visible radiation (light).
- a dielectric barrier discharge lamp requires at least one so-called dielectric barrier electrode.
- a dielectric barrier electrode is separated from the inside of the discharge vessel or the discharge gas by means of a dielectric.
- This dielectric - the dielectric barrier - can be designed, for example, as a dielectric layer covering the electrode, or it is formed by the discharge vessel of the lamp itself, namely if the electrode is arranged on the outside of the wall of the discharge vessel. The latter is abbreviated as "outer electrode” below.
- the present invention relates to a dielectric barrier discharge lamp which has at least one essentially strip-shaped outer electrode of the aforementioned type.
- the lamp also includes an elongated or tubular discharge vessel, closed on both sides, which encloses an ionizable filling.
- the ionizable filling usually consists of an inert gas, for example xenon or a gas mixture. So-called excimers are formed during the gas discharge, which is preferably operated by means of a pulsed operating method described in US Pat. No. 5,604,410. Excimers are excited molecules, such as Xe 2 *, which emit electromagnetic radiation when they return to the normally unbound basic state. In the case of Xe 2 *, the maximum of the molecular band radiation is approximately 172 nm.
- such lamps are suitable as UV ⁇ / UV lamps in process technology, for example surface cleaning, photolytics, ozone generation, metallization, and UV curing.
- process technology for example surface cleaning, photolytics, ozone generation, metallization, and UV curing.
- FIGS. 5a to 5c such a lamp with an Edison screw base for general lighting is already known.
- This lamp has a helical electrode inside the discharge vessel.
- four strip-shaped electrodes are arranged on the outer wall of the discharge vessel.
- EP-A 1 088 335 discloses a dielectric barrier discharge lamp which is suitable for UV radiation and has a base.
- the base does indeed have a flange which is connected to the pinch base of the lamp by means of potting compound and is suitable for vacuum applications.
- this concept is less suitable for high vacuum.
- Another disadvantage is that a relatively large amount of potting compound is required if it covers the entire space between the pinch foot and the circular cylindrical inner wall of the base sleeve.
- gaps are left open, a vacuum is also present in the area between the end of the pinch foot and the subsequent seal in vacuum applications. Then there is a risk of parasitic gas discharges between the power supplies.
- the object of the present invention is to provide an improved dielectric barrier discharge lamp. Another aspect is that the dielectric barrier discharge lamp should be able to be used in a negative pressure environment.
- a dielectric barrier discharge lamp with a base having the following: an elongate discharge vessel which is closed on both sides and whose wall encloses an ionizable filling, electrodes, at least one of the electrodes being an inner electrode, i.e. is arranged inside the discharge vessel and at least one of the electrodes is an outer electrode, i.e.
- the basic idea of the invention is to attach a tube to the lamp base end of the discharge vessel of the dielectric barrier discharge lamp which surrounds the lamp base. This makes it gas-tight
- the tube comprises a cylindrical and a conical section, the conical section connecting the discharge vessel to the cylindrical section.
- the tube expediently additionally has a means for sealing.
- this means for sealing is realized by a small flange seal which is placed over the pipe.
- a small flange seal which is placed over the pipe.
- the power supply for the outer electrodes like the outer electrodes themselves, is designed as a structure similar to a conductor track. The thickness of these structures is typically only a few micrometers. This enables a gas-tight passage of the current supply of the outer electrodes arranged on the outside of the tube through the O-ring usually used as a seal in vacuum small flanges.
- a connector e.g. BNC - HT type, which is connected to the two power supplies. Further details can be found in the exemplary embodiment.
- either a metallic vacuum flange can be connected to the free end of the tube by means of transition glasses or a glass flange by direct melting.
- the power supply for the outer electrode does not necessarily have to be arranged on the outside of the tube in a manner similar to a conductor track. Since the outer electrodes are preferably connected to ground potential, it can also be advantageous to connect the outer electrodes directly to the metallic process chamber, for example by means of a suitable contact spring.
- the attached tube separates the current supply of the inner electrode surrounded by air pressure from that part of the current supply connected to the outer electrodes which is exposed to the process gas atmosphere or vacuum.
- a plan view of a dielectric barrier discharge lamp according to the invention with a base including base adapter (sectional view).
- a dielectric barrier discharge lamp 1 with a base according to the invention is shown schematically in the figure.
- This is a UV / VUV lamp, e.g. for surface cleaning, photolytics, ozone generation, metallization or UV curing.
- This spotlight is designed for an electrical power consumption of approx. 20 W.
- the discharge lamp 1 has a circular-cylindrical discharge vessel 2 made of 0.7 mm to 1.5 mm thick quartz glass.
- the discharge vessel 2 has a outer diameter of approx. 40 mm and a length of approx. 120 mm.
- the inside of the discharge vessel 2 is filled with xenon at a pressure of 20 kPa.
- the discharge vessel 2 is closed like a dome and has a pump tip 3 in the middle of the dome.
- a quartz tube 4 is melted onto the discharge vessel 2.
- this quartz tube can also be attached using glass solder.
- the quartz tube 4 has a conical section 5 and a circular cylindrical section 6.
- the conical section 5 connects the tubular discharge vessel 2 to the circular-cylindrical section 6, the outer diameter of which is approximately 25 mm.
- a connector plug 7 of the BNC-HT type is arranged on the end of the quartz tube 4 facing away from the lamp.
- outer electrodes 8a-8f On the outside of the discharge vessel 2 there are six outer electrodes 8a-8f (the outer electrodes 8d-8f cannot be seen in FIG. 1) in the form of 12 cm long, approximately 1 to 1.5 mm wide, thin platinum strips - Quidistant and attached parallel to the lamp's longitudinal axis.
- the ends of the electrode strips 8a-8f are each connected to one another by a peripheral platinum strip 9, 10.
- the one platinum strip 9, which is attached in the immediate vicinity of the connection between the discharge vessel 2 and the quartz tube 4, is connected to a further platinum strip 11.
- This further platinum strip 11 runs on the outside of the quartz tube 4 and ends at the connector 7, with the first pole of which it is connected. In this way, this platinum strip 11 functions as a power supply for the outer electrodes 8a-8f.
- a modified base adapter 12 of the type ISO KF 40 is arranged on the circular cylindrical section 6 of the quartz tube 4 (sectional view). It comprises a small vacuum flange 13 and an inner sleeve 14 screwed to it.
- the inner sleeve 14 presses an O-ring 16 against a bevel 17 of the small flange 13 via a metal ring 15.
- ser O-ring 16 against the outside of the quartz tube 4.
- Another O-ring 18 is inserted in an inner groove 19 at the thread-free end of the inner sleeve 14.
- An annular groove 20 on the sealing side of the small flange 13 serves to receive a known centering ring with an O-ring (not shown) for installation in a process chamber (not shown).
- the discharge vessel 3 tapers and merges into a pinch seal 21.
- the pinch seal 21 ensures a gas-tight connection of the inner electrode 23 to an external power supply 24.
- This power supply 24 is connected to the second pole of the connector 7 (not shown).
- the inner electrode 23 is a coiled metal wire arranged centrally within the discharge vessel 2.
- the end of the spiral electrode 23 opposite the pinch seal 21 is fixed in the pump tip 3.
- the respective diameters of the metal wire and the helix are 1 mm and 8 mm, respectively.
- the pitch - i.e. the distance within which the helix makes a complete revolution - is 12 mm.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10222100A DE10222100A1 (en) | 2002-05-17 | 2002-05-17 | Dielectric barrier discharge lamp for producing visible, ultraviolet, vacuum ultraviolet and infrared radiation has base with tube fitted to lamp foot end of discharge vessel and enclosing lamp foot |
DE10222100 | 2002-05-17 | ||
PCT/DE2003/001554 WO2003098653A2 (en) | 2002-05-17 | 2003-05-14 | Dielectric barrier discharge lamp with a base |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1506567A2 true EP1506567A2 (en) | 2005-02-16 |
EP1506567B1 EP1506567B1 (en) | 2007-07-18 |
Family
ID=29285538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03752699A Expired - Lifetime EP1506567B1 (en) | 2002-05-17 | 2003-05-14 | Dielectric barrier discharge lamp with a base |
Country Status (8)
Country | Link |
---|---|
US (1) | US7224111B2 (en) |
EP (1) | EP1506567B1 (en) |
JP (1) | JP4330527B2 (en) |
KR (1) | KR100697452B1 (en) |
CA (1) | CA2486200A1 (en) |
DE (2) | DE10222100A1 (en) |
TW (1) | TWI287820B (en) |
WO (1) | WO2003098653A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8441189B2 (en) | 2009-06-24 | 2013-05-14 | Osram Gesellschaft Mit Beschrankter Haftung | Dielectric barrier discharge lamp with discharge spaces |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004006439A1 (en) * | 2004-02-09 | 2005-08-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Vehicle headlight lamp |
CN1893202A (en) * | 2005-07-05 | 2007-01-10 | 电灯专利信托有限公司 | Tube-seat structure of flurorescent lamp |
JP4396752B2 (en) * | 2007-09-28 | 2010-01-13 | ウシオ電機株式会社 | Discharge lamp device |
US20110056513A1 (en) * | 2008-06-05 | 2011-03-10 | Axel Hombach | Method for treating surfaces, lamp for said method, and irradiation system having said lamp |
JP5564880B2 (en) * | 2009-10-02 | 2014-08-06 | ウシオ電機株式会社 | UV irradiation equipment |
WO2011080679A2 (en) * | 2010-01-04 | 2011-07-07 | Koninklijke Philips Electronics N.V. | Dielectric barrier discharge lamp |
JP5218877B6 (en) * | 2010-03-18 | 2018-06-27 | 株式会社Gsユアサ | Dielectric barrier discharge lamp and lamp unit |
DE102010043215A1 (en) | 2010-11-02 | 2012-05-03 | Osram Ag | Spotlight with base for the irradiation of surfaces |
DE102010043208A1 (en) | 2010-11-02 | 2012-05-03 | Osram Ag | Device for irradiating surfaces |
TWI483285B (en) | 2012-11-05 | 2015-05-01 | Ind Tech Res Inst | Dielectric barrier discharge lamp and fabrication method thereof |
DE102015013050A1 (en) | 2015-10-08 | 2016-05-25 | Daimler Ag | An attachment rail for fastening an exhaust manifold to an internal combustion engine |
JP7139808B2 (en) * | 2018-09-13 | 2022-09-21 | 東芝ライテック株式会社 | barrier discharge lamp |
JP2021051936A (en) * | 2019-09-25 | 2021-04-01 | 東芝ライテック株式会社 | Barrier discharge lamp and UV irradiation unit |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3684908A (en) * | 1970-09-25 | 1972-08-15 | Itt | Sealed beam high intensity xenon lamp with cooling structure |
US4310772A (en) * | 1979-11-26 | 1982-01-12 | General Motors Corporation | Sealed beam lamp and method of manufacture |
DE4311197A1 (en) | 1993-04-05 | 1994-10-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Method for operating an incoherently radiating light source |
GB9326123D0 (en) * | 1993-12-22 | 1994-02-23 | Ge Lighting Ltd | Electrodeless fluorescent lamp |
CA2139051A1 (en) * | 1994-12-23 | 1996-06-24 | George Pantev | Connecting mechanism for tubular frame elements |
DE19636965B4 (en) | 1996-09-11 | 2004-07-01 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Electrical radiation source and radiation system with this radiation source |
DE19916877A1 (en) | 1999-04-14 | 2000-10-19 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Discharge lamp with base |
DE19953531A1 (en) * | 1999-11-05 | 2001-05-10 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Discharge lamp with electrode holder |
DE19953533A1 (en) | 1999-11-05 | 2001-05-10 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Discharge lamp with electrode holder |
US6346767B1 (en) * | 1999-12-08 | 2002-02-12 | Osram Sylvania Inc. | Lamp with formed, cemented clip to secure base to lamp |
DE10048986A1 (en) | 2000-09-27 | 2002-04-11 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dielectric barrier discharge lamp |
US6561841B2 (en) * | 2001-08-27 | 2003-05-13 | Trompeter Electronics, Inc. | Connector assembly having visual indicator |
-
2002
- 2002-05-17 DE DE10222100A patent/DE10222100A1/en not_active Withdrawn
-
2003
- 2003-05-14 DE DE50307709T patent/DE50307709D1/en not_active Expired - Lifetime
- 2003-05-14 TW TW092113066A patent/TWI287820B/en not_active IP Right Cessation
- 2003-05-14 EP EP03752699A patent/EP1506567B1/en not_active Expired - Lifetime
- 2003-05-14 KR KR1020047018467A patent/KR100697452B1/en not_active IP Right Cessation
- 2003-05-14 US US10/514,814 patent/US7224111B2/en not_active Expired - Fee Related
- 2003-05-14 WO PCT/DE2003/001554 patent/WO2003098653A2/en active IP Right Grant
- 2003-05-14 JP JP2004506055A patent/JP4330527B2/en not_active Expired - Fee Related
- 2003-05-14 CA CA002486200A patent/CA2486200A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03098653A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8441189B2 (en) | 2009-06-24 | 2013-05-14 | Osram Gesellschaft Mit Beschrankter Haftung | Dielectric barrier discharge lamp with discharge spaces |
Also Published As
Publication number | Publication date |
---|---|
US7224111B2 (en) | 2007-05-29 |
DE10222100A1 (en) | 2003-11-27 |
KR100697452B1 (en) | 2007-03-20 |
US20050218775A1 (en) | 2005-10-06 |
DE50307709D1 (en) | 2007-08-30 |
TWI287820B (en) | 2007-10-01 |
EP1506567B1 (en) | 2007-07-18 |
JP2005526361A (en) | 2005-09-02 |
CA2486200A1 (en) | 2003-11-27 |
KR20050000547A (en) | 2005-01-05 |
WO2003098653A2 (en) | 2003-11-27 |
TW200307309A (en) | 2003-12-01 |
WO2003098653A3 (en) | 2004-12-23 |
JP4330527B2 (en) | 2009-09-16 |
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