EP1513186A2 - Strahlungsquelle, insbesondere Lichtquelle - Google Patents
Strahlungsquelle, insbesondere Lichtquelle Download PDFInfo
- Publication number
- EP1513186A2 EP1513186A2 EP04020003A EP04020003A EP1513186A2 EP 1513186 A2 EP1513186 A2 EP 1513186A2 EP 04020003 A EP04020003 A EP 04020003A EP 04020003 A EP04020003 A EP 04020003A EP 1513186 A2 EP1513186 A2 EP 1513186A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation source
- hollow fiber
- source according
- radiation
- cathode
- 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.)
- Withdrawn
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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
Definitions
- the invention relates to a radiation source, in particular light source, with the Features of the preamble of claim 1, and their use.
- EP 0 732 719 B1 discloses a discharge device with a cathode an array of micro-cavities known. It has a light source forming discharge device a sealed translucent tube with a gas at a prescribed pressure, a first electrode in the tube attached, a second electrode, which is mounted in the tube and from the first electrode and an electrical means for coupling electrical energy in the first and second electrode.
- the first electrode comprises a conductor having a plurality of microvoids therein, each microvoid Having dimensions selected to be a microvoid discharge to assist with the prescribed pressure.
- the first electrode comprises a dielectric layer on the conductor, wherein the dielectric Layer has openings that are aligned with the micro-cavities.
- the electrical device is used to transfer electrical energy into the first and second electrode at a voltage and a current to generate microvoid discharges in each of the micro-cavities.
- each microvoid is of the order of magnitude mean free path of the electrons in the gas.
- the diameter is here in a range of about 10 microns to 1 cm, in particular in a range, so that a product of the pressure with the diameter of 0.1 to 10 Torr x cm results.
- the pressure is in a range of about 0.1 to 200 Torr.
- the Microvoid comprises a volume enclosed by the conductor of the first electrode is, with the exception of an opening, which points to the second electrode.
- the first electrode is tungsten, thorium-alloyed tungsten and molybdenum.
- the light source has a phosphor coating on the inner surface of the translucent tube, wherein the phosphor coating emits radiation with a prescribed spectrum in response to the inside of the tube generated radiation.
- a UV discharge lamp in which within a discharge space containing a filling gas, a first and a second Electrode provided with electrical connections and spaced from each other are arranged, wherein under discharge conditions, the one electrode as the anode and the other electrode acts as a hollow micro-cathode.
- the known discharge lamp so educate that they in a compact design and at the same time long life for universal use in UV spectroscopy, for example suitable for use in mobile spectrometers, it contains the Filling gas deuterium, wherein the partial pressure of the deuterium in the filling gas at least 20 mbar.
- a DC gas discharge lamp with a hollow micro-cathode known. It comprises a first, one spaced from the second Electrode, at least one micro-cavity formed by the two electrodes is a third electrode spaced from the two electrodes and electrical means for connecting at least some of the electrodes at a voltage and a current for generating a micro discharge in at least one micro-cavity formed by the first and second electrodes is.
- the invention is therefore based on the object, a radiation source of the above to improve the type mentioned. This object is achieved by a radiation source with the features of claim 1 solved.
- Advantageous embodiments are the subject of the dependent claims.
- a radiation source with electrodes wherein the Electrodes and possibly also a reflector arranged in a hollow fiber are, that is, the radiation source has the shape of the hollow fiber.
- the shape of the hollow fiber is not restricted. Thus, in addition to round hollow fibers, for example oval or polygonal hollow fibers are used.
- the hollow fiber has an outer diameter or hydraulically equivalent Outer diameter of 0.1 .mu.m to 100 mm, more preferably of 5 ⁇ m to 200 ⁇ m.
- Outer diameter 0.1 .mu.m to 100 mm, more preferably of 5 ⁇ m to 200 ⁇ m.
- the radiation source possibly also bundled, for example entangled or interwoven. It is such an exact Enmesh possible that the radiation, for example, only on one side of a Stoffes exit.
- the hollow fiber has a discharge opening, which is preferably coated with phosphorus is.
- a coating with other fluorescent materials is possible.
- the coating can also cover the entire inner surface of the hollow fiber cover.
- a coating with 1-3 atomic layers of platinum or other elements of the 8th subgroup, which are in this layer thickness have fluorescent properties.
- a dielectric is preferably provided in the region of the electrodes. It points the dielectric prefers smallest openings, in particular holes in the nano range, on.
- the electrodes are made of molybdenum or an element of the 8th Subgroup made.
- the electrodes can also be made of doped carbon, in particular doped diamond, or consist of electrically conductive polymers.
- the hollow fiber preferably consists of SiO 2 + Al 2 O 3 , in particular glass, ceramic, porcelain, doped carbon, diamond, sapphire, leucosaphor, opal, emerald, spinel, zirconium oxide, polyester, polymer, fluorinated polymer, PTFE, PEEK, Makrolon or Plexiglas.
- the reflector is preferably made of anodized, silver, aluminum or platinum. He preferably covers at least half of the inner surface of the hollow fiber, wherein the reflector extends in particular in the longitudinal direction of the hollow fiber.
- a reflector is particularly required when used as a laser. Should not be directed Radiation can be generated, so can be dispensed with a reflector and in the Substantially the entire circumference of the hollow fiber is used as the ejection opening become.
- a hollow fiber formed as a radiation source is preferably in a Textile or an at least partially radiation-transmissive body used. Preference is given to a plurality of hollow fibers to a fabric, a knit fabric or processed into a fleece.
- Fig. 1 shows a section through a radiation source for artificial light serving hollow fiber 1, in this case a hollow micro-fiber with an outer diameter of 100 ⁇ m.
- the hollow fiber 1 consists of mullite. Inside the hollow fiber 1 is a extending in the longitudinal direction of the hollow fiber 1 extending anode 2 and one of Anode 2 opposite cathode 3 is arranged, which with a voltage source U, which supplies a pulsed DC voltage.
- Electrodes, ie the anode 2 and the cathode 3 are each a dielectric barrier provided in the form of a dielectric 4.
- the dielectric 4 is open-celled formed and has holes with dimensions in the nano-meter range, which serve to stimulate the radiation.
- a reflector 5 is provided, which is extends almost over the entire circumference and only a small Ausstrahlö réelle. 6 leaves free.
- the reflector 5 is in the present case formed by an anodized layer.
- the entire inner surface of the hollow fiber 1 and the reflector 5 is with Phosphor coated.
- a coating of the entire inner surface of the hollow fiber or the reflector is not absolutely necessary, it only has the Radiating be coated.
- the Ausstrahlö réelle 6 be coated with phosphor.
- other fluorescent materials are also suitable for coating possible.
- the pressure-tight closed hollow fiber 1 is a noble gas, present Xenon, without mercury, which by the between the anode 2 and the cathode 3 applied voltage is excited, so that in the interior of the hollow fiber 1, a UV radiation is produced.
- the UV radiation is incident reflected on the inner wall of the hollow fiber 1.
- nano-porous platinum can be used, the at Temperature changes its length changes, making the radiation source automatic can be switched off and on depending on the temperature.
- Such automatically depending on the temperature controlled radiation source can For example, provide for a temperature adapted lighting.
- Fig. 2 second embodiment corresponds substantially the first embodiment, so that the same and equivalent parts with the the same reference numerals are provided.
- a rectangular hollow fiber 1 made of glass with a hydraulically equivalent Outside diameter of 50 microns has on the inner wall of one of its side surfaces an anode 2 and a cathode 3, each consisting of molybdenum, on. These are covered by an insulating layer consisting of a dielectric 4, wherein the Insulation layer the entire side is covered and open-celled.
- the opposite side serves as Ausstrahlö réelle 6 and is with a continuous Provided phosphor layer.
- the sides of the hollow fiber 1 are, apart from the discharge opening 6 forming side, with a reflector (not shown) coated, which consists of silver. In the interior of the hollow fiber 1 argon is included.
- Such hollow fibers can be used as infrared light sources, UV light sources or laser light sources.
- hollow fibers 1 for example, spatially entangled or interwoven and then poured. It can by means of Knitting spatial, for example, honeycomb-like, forms generated by means of a radiation-permeable casting compound fixed and above and / or below with radiolucent Prepregs are covered (sandwich honeycomb), the hollow fibers 1 may also be provided in the prepregs.
- Such hollow bodies have a low weight with high strength.
- hollow fiber for devices for sterilizing, in particular of air, water, food or blood, e.g. for extracorporeal blood UV therapies, as they are used in particular for the treatment of cancer possible.
- Devices with corresponding hollow fibers can also be introduced into veins or introduced percutaneously and by a time-dependent, for example Control be supplied with electrical energy. Is an entire treatment device provided with appropriate sources of radiation, so is a contamination-free Treat possible, especially in conjunction with blood.
- the hollow fibers can also be framed for better handling, which is especially is useful for small diameters.
- a finished hollow fiber is partially ionized, so that in these areas targeted material can be deposited.
- a wet-chemical coating optionally under influence surface tension to create structures such as the electrodes, possible.
- a vacuum is applied to one side of the hollow fiber, so that a liquid is sucked into the hollow fiber which adheres to the walls or Areas of the walls.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Radiation-Therapy Devices (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Description
- Fig. 1
- einen schematisch dargestellten, stark vergrößerten Schnitt durch ein erstes Ausführungsbeispiel, und
- Fig. 2
- einen schematisch dargestellten, stark vergrößerten Schnitt durch ein zweites Ausführungsbeispiel.
Claims (10)
- Stahlungsquelle mit einer Anode (2) und einer Kathode (3), die mit einer Spannungsquelle (U) verbunden sind, dadurch gekennzeichnet, dass die Stahlungsquelle durch eine Hohlfaser (1) gebildet ist.
- Strahlungsquelle nach Anspruch 1, dadurch gekennzeichnet, dass die Hohlfaser (1) einen Außendurchmesser oder hydraulisch gleichwertigen Außendurchmesser von 0,1 µm bis 100 mm, insbesondere von 5 µm bis 200 µm aufweist.
- Strahlungsquelle nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass Hohlfaser (1) eine Ausstrahlöffnung (6) aufweist, die mit Phosphor oder einem Element der 8-ter Nebengruppe beschichtet ist.
- Strahlungsquelle nach einem der vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass zumindest im Bereich der Anode (2) und der Kathode (3) ein Dielektrikum (4) vorgesehen ist.
- Strahlungsquelle nach Anspruch 4, dadurch gekennzeichnet, dass das Dielektrikum (4) kleinste Öffnungen aufweist.
- Strahlungsquelle nach einem der vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass die Anode (2) und/oder die Kathode (3) aus Molybdän oder einem Element der 8-ter Nebengruppe, dotiertem Kohlenstoff oder einem elektrisch leitenden Polymer besteht.
- Strahlungsquelle nach einem der vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass die Hohlfaser (1) aus Glas, Keramik, Porzellan, dotiertem Kohlenstoff, Diamant, Saphir, Leukosaphir, Opal, Smaragd, Spinell, Zirkonoxid, Polyester, Polymer, fluoriertem Polymer, PTFE, PEEK, Makrolon oder Plexiglas besteht.
- Strahlungsquelle nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Reflektor (5), insbesondere aus Eloxal, Silber, Platin oder Aluminium, vorgesehen ist.
- Strahlungsquelle nach Anspruch 8, dadurch gekennzeichnet, dass der Reflektor (5) mindestens die Hälfte der Innenfläche der Hohlfaser (1) sich in Längsrichtung der Hohlfaser (1) erstreckend bedeckt.
- Verwendung einer als Strahlungsquelle ausgebildeten Hohlfaser (1) nach einem der Ansprüche 1 bis 9 in einer Textilie oder einem zumindest teilweise strahlungsdurchlässigen Körper.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003141115 DE10341115B3 (de) | 2003-09-03 | 2003-09-03 | Strahlungsquelle, insbesondere Lichtquelle |
| DE10341115 | 2003-09-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1513186A2 true EP1513186A2 (de) | 2005-03-09 |
| EP1513186A3 EP1513186A3 (de) | 2009-04-15 |
Family
ID=34129669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04020003A Withdrawn EP1513186A3 (de) | 2003-09-03 | 2004-08-24 | Strahlungsquelle, insbesondere Lichtquelle |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1513186A3 (de) |
| DE (1) | DE10341115B3 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551100B2 (en) | 2008-07-03 | 2017-01-24 | Philips Lighting Holding B.V. | Dust mite killing carpet |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3927342A (en) * | 1969-04-28 | 1975-12-16 | Owens Illinois Inc | Capillary tube gas discharge device |
| US3662214A (en) * | 1970-04-13 | 1972-05-09 | Sperry Rand Corp | Gas discharge display apparatus utilizing hollow cathode light sources |
| US5675214A (en) * | 1994-09-21 | 1997-10-07 | U.S. Philips Corporation | Low-pressure discharge lamp having hollow electrodes |
| US5686789A (en) * | 1995-03-14 | 1997-11-11 | Osram Sylvania Inc. | Discharge device having cathode with micro hollow array |
| US6452332B1 (en) * | 1999-04-26 | 2002-09-17 | Chad Byron Moore | Fiber-based plasma addressed liquid crystal display |
| US6016027A (en) * | 1997-05-19 | 2000-01-18 | The Board Of Trustees Of The University Of Illinois | Microdischarge lamp |
| DE19920579A1 (de) * | 1999-05-04 | 2000-11-23 | Heraeus Noblelight Gmbh | UV-Entladungslampe |
| US6433480B1 (en) * | 1999-05-28 | 2002-08-13 | Old Dominion University | Direct current high-pressure glow discharges |
| JP3674695B2 (ja) * | 1999-06-07 | 2005-07-20 | 東芝ライテック株式会社 | 放電ランプ、放電ランプ装置 |
-
2003
- 2003-09-03 DE DE2003141115 patent/DE10341115B3/de not_active Expired - Fee Related
-
2004
- 2004-08-24 EP EP04020003A patent/EP1513186A3/de not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551100B2 (en) | 2008-07-03 | 2017-01-24 | Philips Lighting Holding B.V. | Dust mite killing carpet |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10341115B3 (de) | 2005-06-23 |
| EP1513186A3 (de) | 2009-04-15 |
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| RIC1 | Information provided on ipc code assigned before grant |
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| 18D | Application deemed to be withdrawn |
Effective date: 20090303 |