GB616404A - Improvements in and relating to high pressure metal vapour electric discharge lamps - Google Patents

Improvements in and relating to high pressure metal vapour electric discharge lamps

Info

Publication number
GB616404A
GB616404A GB2655746A GB2655746A GB616404A GB 616404 A GB616404 A GB 616404A GB 2655746 A GB2655746 A GB 2655746A GB 2655746 A GB2655746 A GB 2655746A GB 616404 A GB616404 A GB 616404A
Authority
GB
United Kingdom
Prior art keywords
gms
metal vapour
electrodes
pressure metal
relating
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
GB2655746A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2655746A priority Critical patent/GB616404A/en
Publication of GB616404A publication Critical patent/GB616404A/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
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection

Landscapes

  • Discharge Lamp (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

616,404. Metal vapour lamps. GENERAL ELECTRIC CO., Ltd., ISAACS, G. G., and NELSON, E. H. Sept. 4, 1946, No. 26557. [Class 39 (i)] A high-pressure metal vapour discharge lamp of the type described in Specification 600,495 has three electrodes, of which two, 11, 12, are shown, suitable for operation from a threephase source; the electrodes are disposed at the corners of an equilateral triangle and may be 20 mm. apart. The electrodes 11, 12 may be tapering tungsten bars extending perpendicularly from supporting rods 14, 15 fixed to the envelope and disposed parallel to one another. The rods carry activating material 18 for starting. The filling may consist of 2.4 gms. mercury and 1.2 gms. zinc or of 2.4 gms. mercury, 0.8 gms. cadmium and 0.4 gms. zinc. Specification 485,489 also is referred to.
GB2655746A 1946-09-04 1946-09-04 Improvements in and relating to high pressure metal vapour electric discharge lamps Expired GB616404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2655746A GB616404A (en) 1946-09-04 1946-09-04 Improvements in and relating to high pressure metal vapour electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2655746A GB616404A (en) 1946-09-04 1946-09-04 Improvements in and relating to high pressure metal vapour electric discharge lamps

Publications (1)

Publication Number Publication Date
GB616404A true GB616404A (en) 1949-01-20

Family

ID=10245508

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2655746A Expired GB616404A (en) 1946-09-04 1946-09-04 Improvements in and relating to high pressure metal vapour electric discharge lamps

Country Status (1)

Country Link
GB (1) GB616404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207800A (en) * 1987-07-16 1989-02-08 Tungsram Reszvenytarsasag Three-phase high-pressure gas discharge lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207800A (en) * 1987-07-16 1989-02-08 Tungsram Reszvenytarsasag Three-phase high-pressure gas discharge lamp
US4912364A (en) * 1987-07-16 1990-03-27 Tungsram Reszvenytarsasag Three-phase high-pressure gas discharge lamp filled with a gas containing sodium or a metal-halide
GB2207800B (en) * 1987-07-16 1991-10-16 Tungsram Reszvenytarsasag Three-phase high-pressure gas discharge lamp

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