US3753026A - Quartz lamp seal - Google Patents

Quartz lamp seal Download PDF

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Publication number
US3753026A
US3753026A US00095436A US3753026DA US3753026A US 3753026 A US3753026 A US 3753026A US 00095436 A US00095436 A US 00095436A US 3753026D A US3753026D A US 3753026DA US 3753026 A US3753026 A US 3753026A
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US
United States
Prior art keywords
lamp
strip
pinch
molybdenum
sio
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
Application number
US00095436A
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English (en)
Inventor
J Goorissen
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.)
US Philips Corp
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3753026A publication Critical patent/US3753026A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/38—Seals for leading-in conductors
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/04—Joining glass to metal by means of an interlayer
    • C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
    • C03C27/044—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts of glass, glass-ceramic or ceramic material only

Definitions

  • the invention relates to an electric lamp including an envelope of quartz glass or a similar high melting-point material which is transparent to light and has a low thermal coefficient of expansion, which lamp includes at least one pinch in which at least one strip consisting of a metal foil is sealed in, at least one current conductor of metal wire being secured by means of welding to both ends of said strip, while one conductor serves as an electric contact for the lamp.
  • the foil consists of a metal having a melting point of more than l,500C so that during sealing in the foil cannot melt.
  • a metal is chosen having a low thermal coefficient of expansion.
  • the foil consists of tungsten, molybdenum or a suitable alloy of tungsten and molybdenum.
  • the construction of the pinch in question is frequently used in high-power lamps such as infrared radiators and halogen lamps in which not only the envelope but also the pinches may assume a high temperature when the lamps are operating.
  • a capillary space is substantially always formed around that part of the current conductor partially extending beyond the lamp which is present within the pinch.
  • steps have been proposed to protect the portion of the conductor extending beyond the lamp and being present within the pinch and the metal foil strip against oxidation.
  • the object of the proposed steps is either to enhance the adhesion between quartz and the metal parts or to provide the metal parts with an oxidation-protective layer.
  • the materials used for this purpose are metals or metal oxides which cannot be oxidized at the temperature of the pinch. In practice these steps were not found to be successful because it was still difficult to obtain a permanently gastight closure when using these materials.
  • An object of the present invention is to provide an electric lamp in which cracking of the pinch as a result of oxidation of metal parts in the pinch does not occur or substantially does not occur.
  • FIG. 1 shows a molybdenum strip including current conductors, which strip is partially coated with SiO
  • FIG. 2 is a cross-section taken on the line II--Il of FIG. 1.
  • FIG. 3 shows a molybdenum strip including current conductors, which strip is completely coated with SiO
  • FIG. 4 is a cross-section taken on the line IV-IV of FIG. 3 according to the invention.
  • FIG. 5 shows a cross-section of part of a halogen lamp.
  • FIG. 1 shows in a plan view a molybdenum strip 1 to which a molybdenum current conductor 2 and the end of the filament 3 are secured by means of welding. Part of the current conductor 2 and part of the molybdenum strip 1 are coatedwith a thin film 4 of SiO, which is obtained by sputtering.
  • FIG. 2 shows in a side elevational view a crosssection taken on the line II-II of FIG. 1.
  • the thickness of the film 4 is approximately 1 pm. This construction .is used if after providing the SiQ, film something else is to be secured to the molybdenum strip by means of welding.
  • FIG. 3 shows in a plan view a molybdenum strip 5 to which two current conductors 6 and 7 are secured by means of welding. Part of the conductors 6 and 7 and the strip 5 are coated with a thin film of SiO (8) which is provided by means of sputtering. After the strip 5 and the conductors 6 and 7 welded thereto are coated with Si(), the filament 9 is secured to the conductor 8.
  • FIG. 4 shows a cross-section taken on the line IV-IV of FIG. 3.
  • the thickness of the SiO, film is in this case likewise approximately 1pm.
  • the SiO, films were obtained by means of sputtering in an argon atmosphere at a pressure of approximately 2 X 10 Torr. The rate of application was approximately 250 A per minute. A voltage of several kV was applied with the aid of a highfrequency generator l kw, frequency 20 MC) between the cathode and the substrate to be coated. The parts of the molybdenum strip and the conductors secured thereto which were not to be coated with SiO, were covered with a mask.
  • FIG. 5 shows in a cross-section a part of a halogen lamp (1,000 W, Volts) whose pinch temperature during operation of the lamp may increase to approximately 400C in certain types of reflectors.
  • the thickness of the molybdenum foil 10 is approximately 35am.
  • a thin film 11 of SiO, (approximately lum thick) is provided on the molybdenum foil, which film also extends beyond the pinch over approximately 5 mms on the molybdenum conductor 12.
  • the lamp includes a spiral 13 in an atmosphere consisting of argon and a small quantity of iodine (total pressure 2.5 atmospheres). The lifetime of this lamp is approximately 2,000 hours.
  • said strip one conductor serving as an electric contact 4.
  • said thin for the lamp wherein the improvement comprises that film of SiO forms a coating over the entire metal foil a thin film of SiO, forms a coating over the portion of 1() strip and the ends of the conductors. the contact serving current conductor which is located

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US00095436A 1969-12-13 1970-12-07 Quartz lamp seal Expired - Lifetime US3753026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6918746A NL6918746A (enrdf_load_stackoverflow) 1969-12-13 1969-12-13

Publications (1)

Publication Number Publication Date
US3753026A true US3753026A (en) 1973-08-14

Family

ID=19808624

Family Applications (1)

Application Number Title Priority Date Filing Date
US00095436A Expired - Lifetime US3753026A (en) 1969-12-13 1970-12-07 Quartz lamp seal

Country Status (8)

Country Link
US (1) US3753026A (enrdf_load_stackoverflow)
AT (1) AT311493B (enrdf_load_stackoverflow)
BE (1) BE760259A (enrdf_load_stackoverflow)
CA (1) CA918738A (enrdf_load_stackoverflow)
DE (1) DE2058213A1 (enrdf_load_stackoverflow)
FR (1) FR2073526A5 (enrdf_load_stackoverflow)
GB (1) GB1327609A (enrdf_load_stackoverflow)
NL (1) NL6918746A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061943A (en) * 1976-08-16 1977-12-06 Gte Sylvania Incorporated Cathode ray tube with supported conductor extending through exhaust tubulation
DE3110465A1 (de) * 1980-03-27 1982-01-28 ILC Technology Inc., Sunnyvale, Calif. Hoch-intensitaets-lampe mit vorgefertigten elektrodenbauteilen
US4376906A (en) * 1980-03-27 1983-03-15 Ilc Technology, Inc. Electrode ribbon seal assembly
US4419602A (en) * 1981-01-23 1983-12-06 Tokyo Shibaura Denki Kabushiki Kaisha Electric lamp
US5021711A (en) * 1990-10-29 1991-06-04 Gte Products Corporation Quartz lamp envelope with molybdenum foil having oxidation-resistant surface formed by ion implantation
EP0930639A4 (en) * 1997-04-11 2000-01-19 Ushio Electric Inc GASKET OF A LAMP PISTON
US6239550B1 (en) * 1997-07-30 2001-05-29 Matsushita Electronics Corporation Tungsten halogen lamp with infrared reflecting film and method for manufacturing the same
DE10038841C1 (de) * 2000-08-04 2001-12-20 Heraeus Gmbh W C SiO¶2¶-Glaskolben mit mindestens einer Stromdurchführung, Verfahren zur Herstellung einer gasdichten Verbindung zwischen beiden sowie ihre Verwendung in einer Gasentladungslampe
WO2003056607A1 (en) * 2002-01-02 2003-07-10 Philips Intellectual Property & Standards Gmbh METHOD OF MANUFACTURING A FOIL OF MOLYBDENUM AND TITANIUM OXIDE (TiO2) FOR SEALING INTO A GLASS BULB
US20050253521A1 (en) * 2002-10-02 2005-11-17 Koninklijke Philips Electronics N.V. High-pressure gas-discharge lamp
WO2006035327A3 (en) * 2004-09-30 2006-07-20 Koninkl Philips Electronics Nv Electric lamp with sealing foil
US20070082576A1 (en) * 2002-11-07 2007-04-12 Tryggvi Emilsson Oxidation-protected metallic foil and methods
US20070138962A1 (en) * 2005-12-16 2007-06-21 General Electric Company High temperature seal for electric lamp
US20090295291A1 (en) * 2002-11-07 2009-12-03 Tryggvi Emilsson Apparatus and methods for use of refractory abhesives in protection of metallic foils and leads

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL183794B (nl) * 1979-02-26 Philips Nv Hogedrukkwikontladingslamp.
DE3544825A1 (de) * 1985-12-18 1987-06-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Lampe mit einem kolben aus hochkieselsaeurehaltigem glas
AT4408U1 (de) 2000-05-18 2001-06-25 Plansee Ag Verfahren zur herstellung einer elektrischen lampe

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113984A (en) * 1936-06-30 1938-04-12 Gen Electric Quartz seal
US2992959A (en) * 1958-02-20 1961-07-18 Kanthal Ab Production of shaped bodies from heat resistant oxidation proof materials
US3105867A (en) * 1959-09-23 1963-10-01 Philips Corp Metal foil lead-in conductor for electric lamp
US3211826A (en) * 1961-03-16 1965-10-12 Gen Electric Quartz to metal seal
US3420944A (en) * 1966-09-02 1969-01-07 Gen Electric Lead-in conductor for electrical devices
US3515420A (en) * 1968-09-26 1970-06-02 Gen Electric Quartz to metal seal for electrical devices
US3549933A (en) * 1967-02-06 1970-12-22 British Lighting Ind Ltd Quartz lamps
US3617797A (en) * 1968-05-16 1971-11-02 Philips Corp Pinch-base electric lamp with transversely arranged supply wires
US3669693A (en) * 1968-06-24 1972-06-13 Corning Glass Works Germania-silica glasses and method of coating
US3681737A (en) * 1969-05-16 1972-08-01 Bengt Magnusson Electric resistance heater

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113984A (en) * 1936-06-30 1938-04-12 Gen Electric Quartz seal
US2992959A (en) * 1958-02-20 1961-07-18 Kanthal Ab Production of shaped bodies from heat resistant oxidation proof materials
US3105867A (en) * 1959-09-23 1963-10-01 Philips Corp Metal foil lead-in conductor for electric lamp
US3211826A (en) * 1961-03-16 1965-10-12 Gen Electric Quartz to metal seal
US3420944A (en) * 1966-09-02 1969-01-07 Gen Electric Lead-in conductor for electrical devices
US3549933A (en) * 1967-02-06 1970-12-22 British Lighting Ind Ltd Quartz lamps
US3617797A (en) * 1968-05-16 1971-11-02 Philips Corp Pinch-base electric lamp with transversely arranged supply wires
US3669693A (en) * 1968-06-24 1972-06-13 Corning Glass Works Germania-silica glasses and method of coating
US3515420A (en) * 1968-09-26 1970-06-02 Gen Electric Quartz to metal seal for electrical devices
US3681737A (en) * 1969-05-16 1972-08-01 Bengt Magnusson Electric resistance heater

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061943A (en) * 1976-08-16 1977-12-06 Gte Sylvania Incorporated Cathode ray tube with supported conductor extending through exhaust tubulation
DE3110465A1 (de) * 1980-03-27 1982-01-28 ILC Technology Inc., Sunnyvale, Calif. Hoch-intensitaets-lampe mit vorgefertigten elektrodenbauteilen
US4376906A (en) * 1980-03-27 1983-03-15 Ilc Technology, Inc. Electrode ribbon seal assembly
US4419602A (en) * 1981-01-23 1983-12-06 Tokyo Shibaura Denki Kabushiki Kaisha Electric lamp
US5021711A (en) * 1990-10-29 1991-06-04 Gte Products Corporation Quartz lamp envelope with molybdenum foil having oxidation-resistant surface formed by ion implantation
EP0930639A4 (en) * 1997-04-11 2000-01-19 Ushio Electric Inc GASKET OF A LAMP PISTON
US6271627B1 (en) 1997-04-11 2001-08-07 Ushiodenki Kabushiki Kaisha Sealing body having a shielding layer for hermetically sealing a tube lamp
US6239550B1 (en) * 1997-07-30 2001-05-29 Matsushita Electronics Corporation Tungsten halogen lamp with infrared reflecting film and method for manufacturing the same
US6336837B1 (en) * 1997-07-30 2002-01-08 Matsushita Electric Industrial Co., Ltd. Tungsten halogen lamp and method for manufacturing the same
DE10038841C1 (de) * 2000-08-04 2001-12-20 Heraeus Gmbh W C SiO¶2¶-Glaskolben mit mindestens einer Stromdurchführung, Verfahren zur Herstellung einer gasdichten Verbindung zwischen beiden sowie ihre Verwendung in einer Gasentladungslampe
US6525475B2 (en) 2000-08-04 2003-02-25 W. C. Heraeus Gmbh & Co. Kg SiO2-glass bulb with at least one current lead-in, process for producing a gas-tight connection between them, and their use in a gas-discharge lamp
WO2003056607A1 (en) * 2002-01-02 2003-07-10 Philips Intellectual Property & Standards Gmbh METHOD OF MANUFACTURING A FOIL OF MOLYBDENUM AND TITANIUM OXIDE (TiO2) FOR SEALING INTO A GLASS BULB
US20050253521A1 (en) * 2002-10-02 2005-11-17 Koninklijke Philips Electronics N.V. High-pressure gas-discharge lamp
US7514871B2 (en) * 2002-10-02 2009-04-07 Koninklijke Philips Electronics, N.V. High-pressure gas-discharge lamp with improved temperature resistance
US20090295291A1 (en) * 2002-11-07 2009-12-03 Tryggvi Emilsson Apparatus and methods for use of refractory abhesives in protection of metallic foils and leads
US20070082576A1 (en) * 2002-11-07 2007-04-12 Tryggvi Emilsson Oxidation-protected metallic foil and methods
US8277274B2 (en) * 2002-11-07 2012-10-02 Advanced Lighting Technologies, Inc. Apparatus and methods for use of refractory abhesives in protection of metallic foils and leads
EP1563524A4 (en) * 2002-11-07 2008-12-10 Advanced Lighting Tech Inc OXIDATION PROTECTED METAL SHEET AND ASSOCIATED METHODS
US8264147B2 (en) 2002-11-07 2012-09-11 Advanced Lighting Technologies, Inc. Oxidation-protected metallic foil and methods
EP2086002A3 (en) * 2004-09-30 2009-10-28 Koninklijke Philips Electronics N.V. Electric lamp with sealing foil
WO2006035327A3 (en) * 2004-09-30 2006-07-20 Koninkl Philips Electronics Nv Electric lamp with sealing foil
CN101031991B (zh) * 2004-09-30 2010-06-23 皇家飞利浦电子股份有限公司 具有密封箔的电灯
US7888872B2 (en) 2004-09-30 2011-02-15 Koninklijke Philips Electronics N.V. Electric lamp
US20090179570A1 (en) * 2004-09-30 2009-07-16 Koninklijke Philips Electronics, N.V. Electric lamp
US7759871B2 (en) 2005-12-16 2010-07-20 General Electric Company High temperature seal for electric lamp
US20070138962A1 (en) * 2005-12-16 2007-06-21 General Electric Company High temperature seal for electric lamp

Also Published As

Publication number Publication date
AT311493B (de) 1973-11-26
FR2073526A5 (fr) 1971-10-01
GB1327609A (en) 1973-08-22
DE2058213A1 (de) 1971-06-16
CA918738A (en) 1973-01-09
NL6918746A (enrdf_load_stackoverflow) 1971-06-15
BE760259A (fr) 1971-06-11

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