FR1257402A - Improvements to electric discharge lamps - Google Patents

Improvements to electric discharge lamps

Info

Publication number
FR1257402A
FR1257402A FR827477A FR827477A FR1257402A FR 1257402 A FR1257402 A FR 1257402A FR 827477 A FR827477 A FR 827477A FR 827477 A FR827477 A FR 827477A FR 1257402 A FR1257402 A FR 1257402A
Authority
FR
France
Prior art keywords
electric discharge
discharge lamps
lamps
electric
discharge
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
FR827477A
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.)
A E I LAMP LIGHTING Co LT
Original Assignee
A E I LAMP LIGHTING Co LT
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
Priority claimed from GB1699159A external-priority patent/GB955655A/en
Application filed by A E I LAMP LIGHTING Co LT filed Critical A E I LAMP LIGHTING Co LT
Priority to FR827477A priority Critical patent/FR1257402A/en
Application granted granted Critical
Publication of FR1257402A publication Critical patent/FR1257402A/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
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • 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
FR827477A 1959-05-19 1960-05-17 Improvements to electric discharge lamps Expired FR1257402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR827477A FR1257402A (en) 1959-05-19 1960-05-17 Improvements to electric discharge lamps

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1699159A GB955655A (en) 1959-05-19 1959-05-19 Improvements relating to electric discharge lamps
FR827477A FR1257402A (en) 1959-05-19 1960-05-17 Improvements to electric discharge lamps

Publications (1)

Publication Number Publication Date
FR1257402A true FR1257402A (en) 1961-03-31

Family

ID=26186064

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827477A Expired FR1257402A (en) 1959-05-19 1960-05-17 Improvements to electric discharge lamps

Country Status (1)

Country Link
FR (1) FR1257402A (en)

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