GB673485A - Improvements in or relating to electric discharge lamps - Google Patents

Improvements in or relating to electric discharge lamps

Info

Publication number
GB673485A
GB673485A GB24089/51A GB2408951A GB673485A GB 673485 A GB673485 A GB 673485A GB 24089/51 A GB24089/51 A GB 24089/51A GB 2408951 A GB2408951 A GB 2408951A GB 673485 A GB673485 A GB 673485A
Authority
GB
United Kingdom
Prior art keywords
discharge lamps
relating
electric discharge
per cent
mercury
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
GB24089/51A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB673485A publication Critical patent/GB673485A/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
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
    • 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
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury

Landscapes

  • Discharge Lamp (AREA)

Abstract

673,485. Discharge lamps. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. April 18, 1950 [June 29, 1949], No. 24089/51. Divided out of 673,477. Drawings to Specification. Class 39 (i). In low pressure elongated discharge lamps as described in Specification 673,477, similar results are obtained using a gas mixture filling of 70-80 per cent krypton and 30-20 per cent neon, at a pressure of 2-3 mm. of mercury, together with mercury vapour, the lamp operating temperature preferably being 40- 50‹ C.
GB24089/51A 1949-06-29 1950-04-18 Improvements in or relating to electric discharge lamps Expired GB673485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US102016A US2714684A (en) 1949-06-29 1949-06-29 Low pressure fluoresecent and discharge lamps

Publications (1)

Publication Number Publication Date
GB673485A true GB673485A (en) 1952-06-04

Family

ID=22287666

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24089/51A Expired GB673485A (en) 1949-06-29 1950-04-18 Improvements in or relating to electric discharge lamps

Country Status (7)

Country Link
US (1) US2714684A (en)
BE (1) BE496584A (en)
DE (1) DE905414C (en)
ES (1) ES193066A1 (en)
FR (1) FR1020704A (en)
GB (1) GB673485A (en)
NL (2) NL78992C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2120777A1 (en) * 1971-04-28 1972-11-02 Multiblitz Dr.-Ing. D.A. Mannesmann Gmbh & Co Kg, 5050 Porz Strobe light arrangement
US4032814A (en) * 1974-08-19 1977-06-28 Duro-Test Corporation Fluorescent lamp with reduced wattage consumption
US4032813A (en) * 1974-08-19 1977-06-28 Duro-Test Corporation Fluorescent lamp with reduced wattage consumption having electrode shield with getter material
DE2722694C2 (en) * 1977-05-18 1985-01-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Mercury vapor low pressure discharge lamp
US4308650A (en) * 1979-12-28 1982-01-05 Gte Products Corporation Method of making a mercury dispenser, getter and shield assembly for a fluorescent lamp
NL185639C (en) * 1980-10-29 1990-06-01 Philips Nv LOW-PRESSURE MERCURY DISCHARGE LAMP.
US4879469A (en) * 1988-05-13 1989-11-07 University Of North Carolina Mixed media for kinestatic charge detectors
US5013975A (en) * 1988-12-22 1991-05-07 Matsushita Electric Works, Ltd. Electrodeless discharge lamp
US6583566B1 (en) 2000-10-27 2003-06-24 General Electric Company Low wattage fluorescent lamp having improved phosphor layer
WO2003032364A1 (en) * 2001-10-04 2003-04-17 Koninklijke Philips Electronics N.V. Low-pressure mercury discharge lamp
US8421333B2 (en) 2011-03-07 2013-04-16 Osram Sylvania Inc. Energy saving gas discharge lamp including a xenon-based gaseous mixture

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL233305A (en) * 1924-04-01
US2182732A (en) * 1926-12-10 1939-12-05 Gen Electric Metal vapor lamp
US2228327A (en) * 1929-05-04 1941-01-14 Hans J Spanner Discharge device
US1977688A (en) * 1930-03-10 1934-10-23 Gen Scientific Corp Permanent color gaseous conduction tube
US1929369A (en) * 1931-09-30 1933-10-03 Gen Electric Electrical discharge device
US2177710A (en) * 1938-04-22 1939-10-31 Gen Electric Fluorescent sign lamp
US2355258A (en) * 1941-05-13 1944-08-08 Sylvania Electric Prod Ultraviolet fluorescent lamp
US2363531A (en) * 1941-11-27 1944-11-28 Gen Electric Electric discharge device and electrode therefor
US2425697A (en) * 1944-03-02 1947-08-12 Gen Luminescent Corp Low-temperature luminescent lamp
US2473642A (en) * 1948-01-09 1949-06-21 Gen Electric Low-pressure electric discharge device

Also Published As

Publication number Publication date
NL78992C (en)
NL153292B (en)
BE496584A (en)
DE905414C (en) 1954-03-01
US2714684A (en) 1955-08-02
ES193066A1 (en) 1951-07-01
FR1020704A (en) 1953-02-10

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