IE38744B1 - Improved electric discharge lamp - Google Patents

Improved electric discharge lamp

Info

Publication number
IE38744B1
IE38744B1 IE79/74A IE7974A IE38744B1 IE 38744 B1 IE38744 B1 IE 38744B1 IE 79/74 A IE79/74 A IE 79/74A IE 7974 A IE7974 A IE 7974A IE 38744 B1 IE38744 B1 IE 38744B1
Authority
IE
Ireland
Prior art keywords
discharge lamp
coating
jan
solution
phosphates
Prior art date
Application number
IE79/74A
Other versions
IE38744L (en
Original Assignee
Thorn Lighting Ltd
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 Thorn Lighting Ltd filed Critical Thorn Lighting Ltd
Publication of IE38744L publication Critical patent/IE38744L/en
Publication of IE38744B1 publication Critical patent/IE38744B1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—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
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

1463056 Metal-vapour lamps THORN LIGHTING Ltd 18 Jan 1974 [19 Jan 1973] 2953/73 Heading H1D [Also in Division C1] At least those portions of the internal surface of the discharge envelope or the exposed surfaces of internal components which tend to react with the gas filling of a discharge lamp are provided with a glassy coating of a metal phosphate or arsenate, the coating being deposited from a solution on heating. In an example, to a solution of anhydrous aluminium chloride in methanol is added orthophosphoric acid. The resulting liquid is injected through the exhaust tube into a discharge lamp, Fig. 1 (not shown), having a vitreous fused silica arc tube, distributed, and the surplus drained off. The resultant coating is baked at 100‹ C. in a vacuum for 1 hour and finally formed by baking at 400‹ C. for 3 minutes. Preferred phosphates and arsenates are those of aluminium, iron, chromium, titanium, vanadium and tin, but metals of atomic numbers 12, 14, 20, 21, 25, 27-32, 39-49, 56-80, 90 or 92 may be used. The term "phosphate" includes ortho-, meta-, and pyro-phosphates, together with phosphinates and phosphonates. [GB1463056A]
IE79/74A 1973-01-19 1974-01-14 Improved electric discharge lamp IE38744B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB295373A GB1463056A (en) 1973-01-19 1973-01-19 Electric discharge lamp

Publications (2)

Publication Number Publication Date
IE38744L IE38744L (en) 1974-07-19
IE38744B1 true IE38744B1 (en) 1978-05-24

Family

ID=9749163

Family Applications (1)

Application Number Title Priority Date Filing Date
IE79/74A IE38744B1 (en) 1973-01-19 1974-01-14 Improved electric discharge lamp

Country Status (13)

Country Link
US (1) US3900754A (en)
JP (1) JPS5526588B2 (en)
BE (1) BE809913A (en)
CA (1) CA1050605A (en)
DE (1) DE2402422C3 (en)
FR (1) FR2214966B1 (en)
GB (1) GB1463056A (en)
IE (1) IE38744B1 (en)
IT (1) IT1009576B (en)
LU (1) LU69187A1 (en)
NL (1) NL7400807A (en)
SE (1) SE391835B (en)
ZA (1) ZA74278B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196232A (en) * 1975-12-18 1980-04-01 Rca Corporation Method of chemically vapor-depositing a low-stress glass layer
US4256988A (en) * 1977-01-17 1981-03-17 Thorn Lighting Limited Incandescent halogen lamp with protective envelope coating
US4302699A (en) * 1980-03-24 1981-11-24 Gte Products Corporation Low wattage metal halide arc discharge lamp having optimum efficacy
US4321501A (en) * 1980-03-24 1982-03-23 Gte Products Corporation Low wattage, high pressure metal vapor discharge lamp for minimizing detrimental glow time
US4321504A (en) * 1980-03-24 1982-03-23 Gte Products Corporation Low wattage metal halide arc discharge lamp
NL8202778A (en) * 1982-07-09 1984-02-01 Philips Nv LOW-PRESSURE MERCURY DISCHARGE LAMP.
DE3236462A1 (en) * 1982-10-01 1984-04-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München HIGH PRESSURE DISCHARGE LAMP WITH BASE AND RELATED LAMP
US4528478A (en) * 1983-06-09 1985-07-09 Gte Products Corporation Single-ended metal halide discharge lamp with minimal color separation
CA1255746A (en) * 1983-06-09 1989-06-13 George J. English Single-ended metal halide discharge lamps and process of manufacture
US4557700A (en) * 1983-06-09 1985-12-10 Gte Products Corporation Metal halide discharge lamp gas fill process to provide minimal color separation
JPS6220236A (en) * 1985-07-19 1987-01-28 Hitachi Ltd Bulb-type fluorescent lamp
DE8701119U1 (en) * 1987-01-23 1988-05-19 Heimann Gmbh, 6200 Wiesbaden, De
US4998036A (en) * 1987-12-17 1991-03-05 Kabushiki Kaisha Toshiba Metal vapor discharge lamp containing an arc tube with particular bulb structure
US5032762A (en) * 1990-07-16 1991-07-16 General Electric Company Protective beryllium oxide coating for high-intensity discharge lamps
DE4235743A1 (en) * 1992-10-23 1994-04-28 Heraeus Noblelight Gmbh High power emitter esp. UV excimer laser with coated internal electrode - in transparent dielectric tube and external electrode grid, which has long life and can be made easily and economically
JP2819988B2 (en) * 1993-06-29 1998-11-05 松下電工株式会社 Metal vapor discharge lamp
US5473226A (en) * 1993-11-16 1995-12-05 Osram Sylvania Inc. Incandescent lamp having hardglass envelope with internal barrier layer
DE19730888A1 (en) * 1997-07-18 1999-01-28 Bosch Gmbh Robert Gas discharge lamp
US6713860B2 (en) * 2002-02-01 2004-03-30 Intel Corporation Electronic assembly and system with vertically connected capacitors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB388716A (en) * 1931-12-18 1933-03-02 British Thomson Houston Co Ltd Improvements in and relating to the manufacture of glass articles
US2393469A (en) * 1942-08-03 1946-01-22 Corning Glass Works Fluorescent glass and lamp made therefrom

Also Published As

Publication number Publication date
DE2402422B2 (en) 1978-03-23
US3900754A (en) 1975-08-19
DE2402422C3 (en) 1978-11-30
DE2402422A1 (en) 1974-07-25
ZA74278B (en) 1975-05-28
SE391835B (en) 1977-02-28
BE809913A (en) 1974-05-16
NL7400807A (en) 1974-07-23
IT1009576B (en) 1976-12-20
IE38744L (en) 1974-07-19
LU69187A1 (en) 1974-04-08
JPS5526588B2 (en) 1980-07-14
CA1050605A (en) 1979-03-13
FR2214966A1 (en) 1974-08-19
AU6468274A (en) 1975-07-24
FR2214966B1 (en) 1980-01-11
GB1463056A (en) 1977-02-02
JPS49104477A (en) 1974-10-03

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