FR827367A - Improvements to cathode-ray lamps - Google Patents

Improvements to cathode-ray lamps

Info

Publication number
FR827367A
FR827367A FR827367DA FR827367A FR 827367 A FR827367 A FR 827367A FR 827367D A FR827367D A FR 827367DA FR 827367 A FR827367 A FR 827367A
Authority
FR
France
Prior art keywords
cathode
ray lamps
lamps
ray
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 FR827367A publication Critical patent/FR827367A/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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
FR827367D 1936-10-01 1937-09-30 Improvements to cathode-ray lamps Expired FR827367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US103567A US2135283A (en) 1936-10-01 1936-10-01 Method of producing polychromatic light

Publications (1)

Publication Number Publication Date
FR827367A true FR827367A (en) 1938-04-25

Family

ID=22295871

Family Applications (2)

Application Number Title Priority Date Filing Date
FR827367D Expired FR827367A (en) 1936-10-01 1937-09-30 Improvements to cathode-ray lamps
FR827395D Expired FR827395A (en) 1936-10-01 1937-10-01 Improvements to light sources

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR827395D Expired FR827395A (en) 1936-10-01 1937-10-01 Improvements to light sources

Country Status (3)

Country Link
US (1) US2135283A (en)
FR (2) FR827367A (en)
GB (1) GB503024A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221084B (en) * 1988-06-27 1992-10-21 Matsushita Electric Works Ltd Variable colour lighting device

Also Published As

Publication number Publication date
FR827395A (en) 1938-04-25
US2135283A (en) 1938-11-01
GB503024A (en) 1939-03-30

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