FR2073525A5 - LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP - Google Patents

LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP

Info

Publication number
FR2073525A5
FR2073525A5 FR7044470A FR7044470A FR2073525A5 FR 2073525 A5 FR2073525 A5 FR 2073525A5 FR 7044470 A FR7044470 A FR 7044470A FR 7044470 A FR7044470 A FR 7044470A FR 2073525 A5 FR2073525 A5 FR 2073525A5
Authority
FR
France
Prior art keywords
low pressure
discharge lamp
vapor discharge
pressure sodium
sodium vapor
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
FR7044470A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR2073525A5 publication Critical patent/FR2073525A5/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
    • H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium
    • 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
    • H01J61/33—Special shape of cross-section, e.g. for producing cool spot
FR7044470A 1969-12-13 1970-12-10 LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP Expired FR2073525A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6918745.A NL164423C (en) 1969-12-13 1969-12-13 LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP.

Publications (1)

Publication Number Publication Date
FR2073525A5 true FR2073525A5 (en) 1971-10-01

Family

ID=19808623

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7044470A Expired FR2073525A5 (en) 1969-12-13 1970-12-10 LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP

Country Status (6)

Country Link
US (1) US3678315A (en)
BE (1) BE760258A (en)
DE (1) DE2059577C3 (en)
FR (1) FR2073525A5 (en)
GB (1) GB1284789A (en)
NL (1) NL164423C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7712059A (en) * 1977-11-02 1979-05-04 Philips Nv LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP.
DE10044562A1 (en) * 2000-09-08 2002-03-21 Philips Corp Intellectual Pty Low pressure gas discharge lamp with mercury-free gas filling
JP2008537303A (en) * 2005-04-20 2008-09-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Low pressure gas discharge lamp containing indium and sodium halides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE623133A (en) * 1961-10-04

Also Published As

Publication number Publication date
NL164423B (en) 1980-07-15
NL164423C (en) 1980-12-15
DE2059577A1 (en) 1971-06-16
US3678315A (en) 1972-07-18
NL6918745A (en) 1971-06-15
DE2059577C3 (en) 1978-04-06
GB1284789A (en) 1972-08-09
DE2059577B2 (en) 1977-07-28
BE760258A (en) 1971-06-11

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Legal Events

Date Code Title Description
ST Notification of lapse