GB559315A - Improvements relating to metal vapour electric discharge lamps - Google Patents

Improvements relating to metal vapour electric discharge lamps

Info

Publication number
GB559315A
GB559315A GB1209242A GB1209242A GB559315A GB 559315 A GB559315 A GB 559315A GB 1209242 A GB1209242 A GB 1209242A GB 1209242 A GB1209242 A GB 1209242A GB 559315 A GB559315 A GB 559315A
Authority
GB
United Kingdom
Prior art keywords
metal vapour
lamp
arc
electric discharge
discharge lamps
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
GB1209242A
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.)
ALBAN JAMES MEADOWCROFT
Siemens Electric Lamps and Supplies Ltd
Original Assignee
ALBAN JAMES MEADOWCROFT
Siemens Electric Lamps and Supplies Ltd
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 ALBAN JAMES MEADOWCROFT, Siemens Electric Lamps and Supplies Ltd filed Critical ALBAN JAMES MEADOWCROFT
Priority to GB1209242A priority Critical patent/GB559315A/en
Publication of GB559315A publication Critical patent/GB559315A/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 Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

559,315. Metal vapour lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., ALDINGTON, J. N:, and MEADOWCROFT, A. J. Aug. 27, 1942, No. 12092. [Class 39 (i)] A metal vapour discharge lamp has an electrode 2 which has the portion of the surface on which the discharge terminates shaped to a form other than circular. The lamp is heavily loaded in order to cause the discharge to cover this area and thus to cause the cross section of the arc to be affected. The anode 4 may be bevelled off or sloped, as shown in dotted lines, in order to give a bigger solid angle for the emission of light from the arc. The loading for the lamp may be about 10 K.W., the length and diameter of the cathode 2 20 mm. and 12 mm., and the length and diameter of the anode 4 35 mm. and 18 mm. The arc gap is between 9 and 10 mms.
GB1209242A 1942-08-27 1942-08-27 Improvements relating to metal vapour electric discharge lamps Expired GB559315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1209242A GB559315A (en) 1942-08-27 1942-08-27 Improvements relating to metal vapour electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1209242A GB559315A (en) 1942-08-27 1942-08-27 Improvements relating to metal vapour electric discharge lamps

Publications (1)

Publication Number Publication Date
GB559315A true GB559315A (en) 1944-02-14

Family

ID=9998260

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1209242A Expired GB559315A (en) 1942-08-27 1942-08-27 Improvements relating to metal vapour electric discharge lamps

Country Status (1)

Country Link
GB (1) GB559315A (en)

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