EP2412001B1 - Deuteriumlampe - Google Patents

Deuteriumlampe Download PDF

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Publication number
EP2412001B1
EP2412001B1 EP10709392.4A EP10709392A EP2412001B1 EP 2412001 B1 EP2412001 B1 EP 2412001B1 EP 10709392 A EP10709392 A EP 10709392A EP 2412001 B1 EP2412001 B1 EP 2412001B1
Authority
EP
European Patent Office
Prior art keywords
lamp
barrier layer
gas
piston
deuterium
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.)
Active
Application number
EP10709392.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2412001A1 (de
Inventor
Thorsten Jenek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heraeus Noblelight GmbH
Original Assignee
Heraeus Noblelight GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heraeus Noblelight GmbH filed Critical Heraeus Noblelight GmbH
Publication of EP2412001A1 publication Critical patent/EP2412001A1/de
Application granted granted Critical
Publication of EP2412001B1 publication Critical patent/EP2412001B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/68—Lamps in which the main discharge is between parts of a current-carrying guide, e.g. halo lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
    • 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
    • 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

Definitions

  • the invention relates to a deuterium lamp with a lamp base, which has electrode passages, with a piston made of glass and with a housing structure comprising anode, cathode and aperture, wherein at least a part of the piston forms a jet exit surface and wherein lamp base and piston enclose a gas space.
  • the inside of the quartz glass bulb is either unprotected or a coating of boron oxide is applied.
  • the boron oxide diffuses into the quartz glass surface and combines in a chemical reaction with the near-surface layer of the quartz glass.
  • the boron oxide coating has the consequence that the quartz glass surface becomes more chemically resistant.
  • the quartz glass surface is thus better protected from reactions with paste material from the cathode, which occurs during operation of the lamp the piston inside precipitates.
  • the paste material of the cathode contains Ba, Sr and / or Ca.
  • Mercury low pressure or amalgam lamps are known to have an aluminum phosphorous oxide coating which protects the quartz glass surface of the radiator from chemical attack by mercury ions.
  • the mercury ions react with the quartz glass to form mercury oxide, which has a strong absorbing action and reduces the intensity of the radiator ( DE102004038556A1 ).
  • Thin layers are also off EP0290669 B1 .
  • EP1282153 A1 known.
  • the invention has for its object to reduce gas consumption and to improve the life of deuterium lamps.
  • the piston has a gas diffusion barrier layer on its surface facing the gas chamber at least at the jet exit surface, the gas diffusion and thus the gas consumption are reduced significantly in comparison with known techniques.
  • the gas diffusion barrier layer is formed of alumina, preferably of amorphous alumina, since amorphous alumina is much more compact than silica.
  • the gas diffusion barrier layer has a thickness of 10 nm to 10 .mu.m, preferably from 20 nm to 200 nm.
  • the layer thickness can be generated either by a 1-fold layer or by several coating operations.
  • the gas diffusion barrier layer is preferably optically transparent at a wavelength between 160 nm and 1100 nm.
  • the gas diffusion barrier layer can be arranged on the entire surface of the piston facing the gas chamber.
  • the bulb of the deuterium lamp is preferably formed of quartz glass or borosilicate glass, wherein the advantage of the diffusion barrier layer is particularly evident.
  • the alumina can be applied by PVD, CVD or sol-gel methods.
  • the sol-gel can be sprayed, dipped or applied by pulling a core that acts like a round putty.
  • the layer is applied in the sol-gel dipping method in order to achieve a uniform layer quality.
  • the layer is dried for 1 to 24 hours at temperatures between 30 ° C and 200 ° C.
  • the gas diffusion barrier layer is baked at temperatures between 400 ° C and 1400 ° C, preferably between 600 ° C and 1200 ° C, between 1 and 24 hours to achieve a good barrier effect.
  • the illustrated deuterium lamp is based on a base 1 made of quartz glass with electrical cathode feedthrough 2, electrical ground feedthrough 3 and electrical anode feedthrough 4.
  • the electrical feedthroughs 2, 3, 4 are fitted with molybdenum foils 5, which provide a gas-tight seal.
  • the housing structure 11 of the deuterium lamp is additionally supported by the front retaining pin 6 and the rear retaining pin 7 in order to increase the mechanical stability.
  • the housing assembly 11 includes the cathode 14, the anode 12 and the aperture 15, which are spaced apart in the housing structure 11.
  • the cathode 14 is isolated from the housing assembly 11 by the cathode insulation 8.
  • the housing structure 11 is surrounded by a gas volume 9.
  • the gas is preferably Hydrogen or deuterium. Housing structure 11 and gas volume 9 are enclosed by the piston 10 made of quartz glass and the foot 1 gas-tight.
  • deuterium Due to its small atomic radius, deuterium is able to diffuse into the quartz glass structure.
  • the deuterium diffuses predominantly on interstitial sites and is thus interstitially bound in the structure.
  • the chemical bond to form SiD is also possible, but quantitatively negligible.
  • the diffusion rate is significantly lower.
  • This diffusion process is accelerated by surface activation of the quartz glass by hard UV radiation generated by the deuterium plasma.
  • the diffusion at the quartz glass surface in the region of the beam exit is therefore particularly high.
  • the diffusion process described here results in that the filling pressure of the lamp continuously decreases during operation.
  • the arc discharge necessary for the operation of the lamp can only be maintained up to a certain minimum pressure. If this pressure is exceeded by gas consumption, no arc discharge is possible and the lamp is unusable. The gas consumption thus determines the life of the lamp.
  • a Gasdiffusionsbarrie für 13 is applied from amorphous alumina.
  • crystalline alumina is also conceivable.
  • the gas diffusion barrier layer 13 is in Fig. 2 and is applied to the entire inner surface of the piston 10.
  • the gas diffusion barrier layer 13 was applied by 2-fold coating in the sol-gel dipping method. After each individual coating, it was dried at 100 ° C. for 12 hours and baked at 900 ° C. for 12 hours. The resulting gas diffusion barrier layer 13 has a thickness of 100 nm in total. It is optically transparent in the range between 160 nm and 1100 nm.
  • Amorphous alumina is much more compact than the structure of quartz glass and therefore significantly reduces deuterium diffusion.
  • the reduction of gas consumption is in Fig. 3 shown.
  • Curve A shows the course of a lamp without gas diffusion barrier layer
  • curve B the course with the gas diffusion barrier layer according to the invention.
  • the reduced gas loss allows a much longer service life of the deuterium lamp until reaching the critical filling pressure.
  • the reduced gas loss also improves the intensity profile of the deuterium lamp, since the UV intensity of a deuterium lamp depends on the particle density of the filling gas and thus depends on the filling pressure.
  • the particle density is related to the number of ionized deuterium molecules, which in turn directly determines the number of photons generated and thus the UV intensity.
  • the optimum filling pressure of a deuterium lamp is about 5 mbar, depending on the geometry. A critical pressure of about 1 mbar should not be undercut.
  • Fig. 4 shows the intensity profile of a deuterium lamp without gas diffusion barrier layer (curve A) and with the gas diffusion barrier layer according to the invention (curve B).

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP10709392.4A 2009-03-26 2010-02-25 Deuteriumlampe Active EP2412001B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009014425A DE102009014425B4 (de) 2009-03-26 2009-03-26 Deuteriumlampe
PCT/EP2010/001157 WO2010108581A1 (de) 2009-03-26 2010-02-25 Deuteriumlampe

Publications (2)

Publication Number Publication Date
EP2412001A1 EP2412001A1 (de) 2012-02-01
EP2412001B1 true EP2412001B1 (de) 2014-12-17

Family

ID=42224847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10709392.4A Active EP2412001B1 (de) 2009-03-26 2010-02-25 Deuteriumlampe

Country Status (9)

Country Link
US (1) US20110285282A1 (ko)
EP (1) EP2412001B1 (ko)
JP (1) JP5362098B2 (ko)
KR (1) KR101553734B1 (ko)
CN (1) CN102365706B (ko)
AU (1) AU2010227909B2 (ko)
DE (1) DE102009014425B4 (ko)
SG (1) SG174121A1 (ko)
WO (1) WO2010108581A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014675A1 (de) 2013-09-04 2015-03-05 Jochen Wieser Ultraviolettlichtquelle
CN103646847A (zh) * 2013-12-07 2014-03-19 四川天微电子有限责任公司 紫外线发射器

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672380A5 (en) 1987-01-27 1989-11-15 Bbc Brown Boveri & Cie Reduce darkening of mercury vapour UV tube - using hafnium, lanthanum, thorium or aluminium oxide coating
DE3715375C1 (de) 1987-05-08 1988-10-13 Heraeus Gmbh W C Wasserstoff-Entladungslampe
DE3713704A1 (de) 1987-04-24 1988-11-03 Heraeus Gmbh W C Wasserstoff-entladungslampe und verfahren zu ihrer herstellung
DE3902144A1 (de) * 1989-01-25 1990-08-02 Heraeus Gmbh W C Deuterium-lampe fuer spektralanalyse-vorrichtungen
JPH0660852A (ja) * 1992-08-12 1994-03-04 Hitachi Ltd 重水素放電管
DE4342941C1 (de) * 1993-12-16 1995-07-06 Forschungszentrum Juelich Gmbh Wasserstoffgasentladungslampe
JP2740738B2 (ja) * 1994-05-31 1998-04-15 浜松ホトニクス株式会社 ガス放電管
DE19619358C2 (de) * 1996-05-14 2001-09-27 Heraeus Noblelight Gmbh Verwendung eines optischen Filters mit Interferenzfilter-Mehrfachschicht
JP3648905B2 (ja) * 1997-01-24 2005-05-18 岩崎電気株式会社 水銀蒸気放電灯
JP4275853B2 (ja) 1997-12-24 2009-06-10 浜松ホトニクス株式会社 ガス放電管
EP1043755B1 (en) 1997-12-24 2004-08-04 Hamamatsu Photonics K.K. Deuterium gas discharge tube
DE10137015A1 (de) * 2001-07-30 2003-02-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungsgefäß mit Excimerfüllung und zugehörige Entladungslampe
DE102004038556A1 (de) 2004-08-06 2006-02-23 Heraeus Noblelight Gmbh Beschichteter Strahlungskörper
US7786673B2 (en) * 2005-09-14 2010-08-31 General Electric Company Gas-filled shroud to provide cooler arctube
CN101371330A (zh) * 2005-09-14 2009-02-18 通用电气公司 电弧管的充气护罩
JP4986509B2 (ja) * 2006-06-13 2012-07-25 株式会社オーク製作所 紫外連続スペクトルランプおよび点灯装置
JP2008181681A (ja) * 2007-01-23 2008-08-07 Harison Toshiba Lighting Corp メタルハライドランプ、点灯装置、自動車用前照灯装置

Also Published As

Publication number Publication date
DE102009014425B4 (de) 2011-02-03
KR101553734B1 (ko) 2015-09-16
KR20120001725A (ko) 2012-01-04
SG174121A1 (en) 2011-10-28
CN102365706A (zh) 2012-02-29
AU2010227909B2 (en) 2014-05-01
AU2010227909A1 (en) 2011-09-01
JP5362098B2 (ja) 2013-12-11
CN102365706B (zh) 2016-03-16
EP2412001A1 (de) 2012-02-01
US20110285282A1 (en) 2011-11-24
DE102009014425A1 (de) 2010-10-21
JP2012521621A (ja) 2012-09-13
WO2010108581A1 (de) 2010-09-30

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