EP0067758B1 - Tube à éclairs à connexions électriques radiales avec alimentation en gaz - Google Patents
Tube à éclairs à connexions électriques radiales avec alimentation en gaz Download PDFInfo
- Publication number
- EP0067758B1 EP0067758B1 EP82401004A EP82401004A EP0067758B1 EP 0067758 B1 EP0067758 B1 EP 0067758B1 EP 82401004 A EP82401004 A EP 82401004A EP 82401004 A EP82401004 A EP 82401004A EP 0067758 B1 EP0067758 B1 EP 0067758B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- brought
- metal
- discharge tube
- bushing
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/80—Lamps suitable only for intermittent operation, e.g. flash lamp
Definitions
- the present invention relates to a flash tube with radial electrical connections with gas supply. It finds an application in particular in the optical pumping of lasers (and in particular iodine lasers), in the visible or near ultraviolet range.
- the electrodes are connected to metal rods serving as electrical connections. These rods are arranged in the axis of the discharge tube and connected to the latter by glass-metal seals.
- a significant “dead length” that is to say a portion which does not contribute to the emission of light.
- the gaseous medium in which the discharge takes place cannot be renewed, and there is a gradual deterioration in its purity which limits the life of the tube to a few thousand flashes. .
- the nature and the pressure of the gaseous medium are definitively fixed.
- document FR-A-2 345 809 discloses a flash tube in which each electrode is connected to the discharge tube by seals.
- the present invention relates to a flash tube of this kind, provided with its supply line, in which original connection means are provided which facilitate mounting and reduce the dead length.
- the electrode intended to be brought to a high potential is fixed to a metal connection piece disposed in an insulating endpiece provided with an insulating sleeve disposed radially with respect to the discharge tube, this sleeve being pierced with a canal.
- the supply line is a coaxial cable having a central conductor which borrows the channel of the insulating sleeve and is connected to the connection part of the electrode intended to be brought to a high potential, and the electrode intended to be brought to earth potential is fixed in a metal tip provided with a metal sleeve disposed radially with respect to the discharge tube.
- the flash tube essentially comprises a discharge tube 10 made of transparent material (for example silica) closed by two electrodes 12 and 14. These electrodes are connected to the tube 10 by seals 16 and 18. These joints ensure, on the one hand, the tightness of the discharge tube and, on the other hand, a certain flexibility in the connection of the electrodes with the tube.
- One of the electrodes, the electrode 14, is intended to be brought to a high potential during the duration of excitation of the tube; the other, electrode 12, is brought to earth potential.
- the latter electrode is fixed in a metal end piece 20, for example by means of a screw 22, this end piece comprising a metal sleeve 24 disposed radially relative to the discharge tube and serving as an electrical connection.
- the electrode 14 and the piece 26 are integrated in an insulating tip 30 provided with an insulating plug 32.
- the end piece 30 is integral with a sleeve 34, also made of insulating material, and arranged radially with respect to the discharge tube. This sleeve 34 is pierced with a channel 36.
- the flash tube is electrically powered by a coaxial cable, the inner conductor 40 of which passes through the channel 36 to be welded to the connection piece 26.
- the outer conductor 42 of this cable is connected to a metal piece 44 which is fixed to the end of the insulating sleeve 34.
- This piece 44 is connected to the metal sleeve 24 specific to the electrode 12, by a metal bar 46 which extends parallel to the discharge tube 10.
- connection mode limits the inductance of the circuit and allows short discharges to be obtained.
- the bar 46 can serve as a support for a reflector 48, disposed around the flash tube and capable of concentrating the light emitted by the latter towards the member of use.
- the electrode 12 which is brought to earth potential, is moreover pierced with openings 50 of small diameter, connected to a channel 52 pierced in the metal sleeve 24.
- a connector 54 At the end of the latter is a connector 54 which can be connected to a gas source not shown.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Lasers (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Elimination Of Static Electricity (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8111143 | 1981-06-05 | ||
FR8111143A FR2507385A1 (fr) | 1981-06-05 | 1981-06-05 | Tube a eclairs a connexions electriques radiales avec alimentation en gaz |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0067758A2 EP0067758A2 (fr) | 1982-12-22 |
EP0067758A3 EP0067758A3 (en) | 1983-04-06 |
EP0067758B1 true EP0067758B1 (fr) | 1986-10-01 |
Family
ID=9259223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82401004A Expired EP0067758B1 (fr) | 1981-06-05 | 1982-06-02 | Tube à éclairs à connexions électriques radiales avec alimentation en gaz |
Country Status (6)
Country | Link |
---|---|
US (1) | US4496873A (ja) |
EP (1) | EP0067758B1 (ja) |
JP (1) | JPS57212761A (ja) |
CA (1) | CA1192598A (ja) |
DE (1) | DE3273534D1 (ja) |
FR (1) | FR2507385A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5039904A (en) * | 1989-09-28 | 1991-08-13 | General Electric Company | Mount for miniature arc lamp |
US5245624A (en) * | 1991-11-14 | 1993-09-14 | Toepel Michael P | Lase and laser pump lamp chamber |
US5785543A (en) * | 1995-12-04 | 1998-07-28 | Litton Systems, Inc. | High voltage flashlamp connector method and apparatus |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2342806A (en) * | 1938-06-22 | 1944-02-29 | Hofmann Josef | High pressure mercury vapor lamp |
US3172000A (en) * | 1961-08-31 | 1965-03-02 | Giannini Scient Corp | Gas discharge light source with a recirculating gas supply |
US3555449A (en) * | 1966-11-15 | 1971-01-12 | Westinghouse Electric Corp | Liquid cooled laser system |
US3447030A (en) * | 1967-02-28 | 1969-05-27 | Electro Optical Systems Inc | Cold seal lamp pressure regulation |
US3721917A (en) * | 1971-06-17 | 1973-03-20 | V Fisher | Gas-discharge devices for optical pumping of lasers |
US4074208A (en) * | 1975-09-17 | 1978-02-14 | Jersey Nuclear-Avco Isotopes, Inc. | Stabilized repetitively pulsed flashlamps |
US3993922A (en) * | 1976-01-05 | 1976-11-23 | Gte Sylvania Incorporated | Arc discharge lamp with integral trigger electrode |
-
1981
- 1981-06-05 FR FR8111143A patent/FR2507385A1/fr active Granted
-
1982
- 1982-06-02 DE DE8282401004T patent/DE3273534D1/de not_active Expired
- 1982-06-02 EP EP82401004A patent/EP0067758B1/fr not_active Expired
- 1982-06-04 US US06/385,254 patent/US4496873A/en not_active Expired - Fee Related
- 1982-06-04 JP JP57096079A patent/JPS57212761A/ja active Pending
- 1982-06-04 CA CA000404497A patent/CA1192598A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1192598A (fr) | 1985-08-27 |
EP0067758A3 (en) | 1983-04-06 |
EP0067758A2 (fr) | 1982-12-22 |
DE3273534D1 (en) | 1986-11-06 |
FR2507385B1 (ja) | 1984-11-02 |
FR2507385A1 (fr) | 1982-12-10 |
JPS57212761A (en) | 1982-12-27 |
US4496873A (en) | 1985-01-29 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Designated state(s): DE GB IT |
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PUAL | Search report despatched |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19830928 |
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REF | Corresponds to: |
Ref document number: 3273534 Country of ref document: DE Date of ref document: 19861106 |
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ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
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PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
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26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19890602 |
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GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19900301 |
|
ITTA | It: last paid annual fee |