GB545389A - Improvements in electron discharge devices - Google Patents

Improvements in electron discharge devices

Info

Publication number
GB545389A
GB545389A GB38141A GB38141A GB545389A GB 545389 A GB545389 A GB 545389A GB 38141 A GB38141 A GB 38141A GB 38141 A GB38141 A GB 38141A GB 545389 A GB545389 A GB 545389A
Authority
GB
United Kingdom
Prior art keywords
discharge lamps
discharge devices
electron discharge
fins
electrode
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
GB38141A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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
Priority to BE481558D priority Critical patent/BE481558A/xx
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB38141A priority patent/GB545389A/en
Publication of GB545389A publication Critical patent/GB545389A/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
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H01J61/523—Heating or cooling particular parts of the lamp
    • H01J61/526—Heating or cooling particular parts of the lamp heating or cooling of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0011—Non-emitting electrodes

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

545,389. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., BOURNE, H. K., and BEESON, E. J. G. Jan. 10, 1941, No. 381. [Class 39 (i)] In electric discharge lamps of the compact source high pressure mercury vapour type, radiating fins 4 are provided in thermal contact with and transverse to the lead-in or support wire for one or both of the electrodes 2 forming the anode of a lamp working on D.C. or A.C. respectively so as to protect the seal from overheating. The fins are formed by slotting the back of the mass of the electrode transversely as shown at 3. According to the Provisional Specification the slots may be longitudinal of the electrode axis.
GB38141A 1941-01-10 1941-01-10 Improvements in electron discharge devices Expired GB545389A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE481558D BE481558A (en) 1941-01-10
GB38141A GB545389A (en) 1941-01-10 1941-01-10 Improvements in electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38141A GB545389A (en) 1941-01-10 1941-01-10 Improvements in electron discharge devices

Publications (1)

Publication Number Publication Date
GB545389A true GB545389A (en) 1942-05-22

Family

ID=9703422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38141A Expired GB545389A (en) 1941-01-10 1941-01-10 Improvements in electron discharge devices

Country Status (2)

Country Link
BE (1) BE481558A (en)
GB (1) GB545389A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649164A2 (en) * 1993-10-19 1995-04-19 Hamamatsu Photonics K.K. Metal halide lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649164A2 (en) * 1993-10-19 1995-04-19 Hamamatsu Photonics K.K. Metal halide lamp
EP0649164A3 (en) * 1993-10-19 1995-12-27 Hamamatsu Photonics Kk Metal halide lamp.
US5614787A (en) * 1993-10-19 1997-03-25 Hamamatsu Photonics K.K. Metal halide lamp having heat dam portion

Also Published As

Publication number Publication date
BE481558A (en)

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