FR993783A - Improvements to fluorescence lighting tubes - Google Patents

Improvements to fluorescence lighting tubes

Info

Publication number
FR993783A
FR993783A FR993783DA FR993783A FR 993783 A FR993783 A FR 993783A FR 993783D A FR993783D A FR 993783DA FR 993783 A FR993783 A FR 993783A
Authority
FR
France
Prior art keywords
lighting tubes
fluorescence lighting
fluorescence
tubes
lighting
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
Other languages
French (fr)
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.)
Compagnie des Lampes
Original Assignee
Compagnie des Lampes
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 Compagnie des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR993783A publication Critical patent/FR993783A/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
    • H01J61/70—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
    • 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
FR993783D 1948-08-27 1949-08-26 Improvements to fluorescence lighting tubes Expired FR993783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46506A US2714681A (en) 1948-08-27 1948-08-27 Electric discharge device

Publications (1)

Publication Number Publication Date
FR993783A true FR993783A (en) 1951-11-07

Family

ID=21943812

Family Applications (1)

Application Number Title Priority Date Filing Date
FR993783D Expired FR993783A (en) 1948-08-27 1949-08-26 Improvements to fluorescence lighting tubes

Country Status (4)

Country Link
US (1) US2714681A (en)
DE (1) DE847936C (en)
FR (1) FR993783A (en)
GB (1) GB699632A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE545445A (en) * 1955-02-23
US2885587A (en) * 1956-06-13 1959-05-05 Westinghouse Electric Corp Low pressure discharge lamp and method
US2901653A (en) * 1957-04-22 1959-08-25 Westinghouse Electric Corp Fluorescent lamp
US3005930A (en) * 1957-08-12 1961-10-24 Westinghouse Electric Corp Electric discharge apparatus
NL246040A (en) * 1958-12-06
DE1100811B (en) * 1959-02-26 1961-03-02 Egyesuelt Izzolampa Argon-Xenon ignition gas mixture for low-pressure mercury vapor fluorescent lamps
US2965786A (en) * 1959-04-30 1960-12-20 Sylvania Electric Prod Calcium halophosphate phosphors
US3444415A (en) * 1965-12-10 1969-05-13 Microdot Inc Fluorescent discharge lamp
US3462631A (en) * 1966-08-30 1969-08-19 Tokyo Shibaura Electric Co Fluorescent lamps
CA969598A (en) * 1971-11-12 1975-06-17 Hitoshi Otsuka Fluorescent tube for lamp
CA971214A (en) * 1971-11-12 1975-07-15 Matsushita Electronics Corporation Fluorescent tube for lamp
CN100380568C (en) 2002-04-11 2008-04-09 皇家飞利浦电子股份有限公司 Low-pressure mercury vapor discharge lamp
EP1550146A2 (en) * 2002-04-11 2005-07-06 Koninklijke Philips Electronics N.V. Low-pressure mercury vapor discharge lamp
JP2005522368A (en) * 2002-04-17 2005-07-28 コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト Detection method of tire characteristics
EP1579473A2 (en) * 2002-10-04 2005-09-28 Koninklijke Philips Electronics N.V. Low-pressure mercury vapor discharge lamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL233305A (en) * 1924-04-01
GB233305A (en) * 1924-04-30 1925-08-27 Philips Nv Improvements in or relating to electric discharge tubes for positive light
US2407379A (en) * 1941-12-22 1946-09-10 Morehouse Walter Bertram Combination bactericidal and illuminating lamp
US2346522A (en) * 1942-05-12 1944-04-11 Hartford Nat Bank & Trust Co Fluorescent lamp

Also Published As

Publication number Publication date
GB699632A (en) 1953-11-11
DE847936C (en) 1952-08-28
US2714681A (en) 1955-08-02

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