GB1168460A - High pressure electric discharge device - Google Patents

High pressure electric discharge device

Info

Publication number
GB1168460A
GB1168460A GB57032/66A GB5703266A GB1168460A GB 1168460 A GB1168460 A GB 1168460A GB 57032/66 A GB57032/66 A GB 57032/66A GB 5703266 A GB5703266 A GB 5703266A GB 1168460 A GB1168460 A GB 1168460A
Authority
GB
United Kingdom
Prior art keywords
atoms
oxide
high pressure
discharge device
pressure
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
Application number
GB57032/66A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB1168460A publication Critical patent/GB1168460A/en
Expired legal-status Critical Current

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
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/22—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent vapour of an alkali metal
    • 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

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

1,168,460. Metal vapor lamps. SYLVANIA ELECTRIC PRODUCTS, Inc. 20 Dec. 1966 [29 Dec., 1965], No. 57032/66. Heading H1D. A high pressure electric discharge device has a filling including Hg, a halogen other than fluorine, e.g. I and an alkali metal, particularly Na, contained in a quartz arc tube having on its surface a coating 1 such as zirconium oxide or zirconium oxide with not more than 15% by wt. of yttrium oxide which prevents migration of alkali atoms into the quartz. A further coating 2 of a refractory oxide, e.g. of calcium, magnesium or aluminium oxide, or an equal parts by wt. mix - ture of aluminaandmagnesia prevents migration of Zr atoms into the discharge space. Layers 1 and 2 may be 400 to 1000 Š and 1200 to 3000 Š thick respectively. Reference is made to one half to several atmospheres Hg pressure at 450 to 700‹ C. operating temperature, 2.5 x 10<SP>-5</SP> to 4À1 x 10<SP>-5</SP>grm. atoms of Hg/cm. of arc length, the inclusion of He, Ar, Ne, Kr or Xe at a pressure of 25 mms. Hg and the inclusion of Cd, Ga, In, Mo, Sc, Tl, Th and V. Electrodes 13 and 14 may be of W or Mo containing Th within the helices, or may be of thoriated W wire (containing 2 to 4% Th by wt.) or the Th may be eliminated entirely. Starting electrode 18 may be of Ta or W.
GB57032/66A 1965-12-29 1966-12-20 High pressure electric discharge device Expired GB1168460A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US527407A US3350598A (en) 1965-12-29 1965-12-29 High pressure electric discharge device containing a fill of mercury, halogen and an alkali metal and barrier refractory oxide layers

Publications (1)

Publication Number Publication Date
GB1168460A true GB1168460A (en) 1969-10-29

Family

ID=24101339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57032/66A Expired GB1168460A (en) 1965-12-29 1966-12-20 High pressure electric discharge device

Country Status (2)

Country Link
US (1) US3350598A (en)
GB (1) GB1168460A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989982A (en) * 1970-08-27 1976-11-02 Owens-Illinois, Inc. Multiple gaseous discharge display/memory panel having decreased operating voltages
US4133934A (en) * 1973-02-16 1979-01-09 Owens-Illinois, Inc. Article comprising dielectric body
GB2124019A (en) * 1982-07-09 1984-02-08 Philips Nv Low-pressure mercury vapour discharge lamp

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1478565A (en) * 1966-03-15 1967-04-28 Lampes Sa Improvement in electric discharge lamps containing metal iodides including sodium iodide
US3558963A (en) * 1968-08-16 1971-01-26 Gen Electric High-intensity vapor arc-lamp
US3624444A (en) * 1969-07-05 1971-11-30 Philips Corp Low-pressure mercury vapor discharge lamp
US3599029A (en) * 1969-10-31 1971-08-10 Gen Electric Fluorescent lamp envelope with transparent protective coating
US4731560A (en) * 1970-08-06 1988-03-15 Owens-Illinois Television Products, Inc. Multiple gaseous discharge display/memory panel having improved operating life
US4794308A (en) * 1970-08-06 1988-12-27 Owens-Illinois Television Products Inc. Multiple gaseous discharge display/memory panel having improved operating life
US3863089A (en) * 1970-09-28 1975-01-28 Owens Illinois Inc Gas discharge display and memory panel with magnesium oxide coatings
NL171756C (en) * 1972-11-25 1983-05-02 Philips Nv LOW-PRESSURE MERCURY DISCHARGE LAMP AND METHOD FOR THE MANUFACTURE THEREOF.
US4047067A (en) * 1974-06-05 1977-09-06 General Electric Company Sodium halide discharge lamp with an alumina silicate barrier zone in fused silica envelope
US4056751A (en) * 1976-03-22 1977-11-01 Gte Sylvania Incorporated Metal halide discharge lamp having optimum electrode location
US4256988A (en) * 1977-01-17 1981-03-17 Thorn Lighting Limited Incandescent halogen lamp with protective envelope coating
US4574218A (en) * 1979-12-20 1986-03-04 General Electric Company Metal vapor lamp having internal means promoting condensate film formation
US5032762A (en) * 1990-07-16 1991-07-16 General Electric Company Protective beryllium oxide coating for high-intensity discharge lamps
US5270615A (en) * 1991-11-22 1993-12-14 General Electric Company Multi-layer oxide coating for high intensity metal halide discharge lamps
US5343118A (en) * 1991-12-30 1994-08-30 General Electric Company Iodine getter for a high intensity metal halide discharge lamp
JP2819988B2 (en) * 1993-06-29 1998-11-05 松下電工株式会社 Metal vapor discharge lamp
CN105070635A (en) * 2015-07-31 2015-11-18 徐琴玉 Iodine-gallium iron lamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1188587A (en) * 1913-07-12 1916-06-27 Cooper Hewitt Electric Co Vapor electric apparatus.
US2568459A (en) * 1948-10-29 1951-09-18 Gen Electric Electric discharge device
GB947311A (en) * 1960-02-01 1964-01-22 Gen Electric Co Ltd Improvements in or relating to sodium-vapour-resistant glass tubing and to electric lamps incorporating such tubing
US3234421A (en) * 1961-01-23 1966-02-08 Gen Electric Metallic halide electric discharge lamps

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989982A (en) * 1970-08-27 1976-11-02 Owens-Illinois, Inc. Multiple gaseous discharge display/memory panel having decreased operating voltages
US4133934A (en) * 1973-02-16 1979-01-09 Owens-Illinois, Inc. Article comprising dielectric body
GB2124019A (en) * 1982-07-09 1984-02-08 Philips Nv Low-pressure mercury vapour discharge lamp

Also Published As

Publication number Publication date
US3350598A (en) 1967-10-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees