GB660260A - Improvements in electric discharge devices - Google Patents

Improvements in electric discharge devices

Info

Publication number
GB660260A
GB660260A GB428448A GB428448A GB660260A GB 660260 A GB660260 A GB 660260A GB 428448 A GB428448 A GB 428448A GB 428448 A GB428448 A GB 428448A GB 660260 A GB660260 A GB 660260A
Authority
GB
United Kingdom
Prior art keywords
radiation
feb
envelope
electric discharge
discharge devices
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
GB428448A
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
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB428448A priority Critical patent/GB660260A/en
Priority to FR980586D priority patent/FR980586A/en
Priority to FR59318D priority patent/FR59318E/en
Publication of GB660260A publication Critical patent/GB660260A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

660,260. Discharge lamps. BRITISH THOMSON-HOUSTON CO. Ltd., and SCOTT, W. J. Feb. 25, 1949 [Feb. 13, 1948], No. 4284/48. Class 39 (i). In an ultra-violet lamp having a quartz or fused silica envelope, the part of the envelope 5 surrounding a lead-in conductor 4 has an insert 7 of material capable of reducing the transmission of radiation along this part. The total internal reflection of radiation within the part 5, owing to its high refractive index, tends to cause overheating of the vacuum-tight seal to the knife-edged molybdenum cup 6, which is reduced by the inserted collar 7 of material more opaque to ultraviolet radiation. The material 7 may consist of a translucent silica containing a multiplicity of air bubbles.
GB428448A 1948-02-13 1948-02-13 Improvements in electric discharge devices Expired GB660260A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB428448A GB660260A (en) 1948-02-13 1948-02-13 Improvements in electric discharge devices
FR980586D FR980586A (en) 1948-02-13 1949-02-10 Improvements to discharge lamps
FR59318D FR59318E (en) 1948-02-13 1949-05-25 Improvements to discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB428448A GB660260A (en) 1948-02-13 1948-02-13 Improvements in electric discharge devices

Publications (1)

Publication Number Publication Date
GB660260A true GB660260A (en) 1951-11-07

Family

ID=9774231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB428448A Expired GB660260A (en) 1948-02-13 1948-02-13 Improvements in electric discharge devices

Country Status (2)

Country Link
FR (2) FR980586A (en)
GB (1) GB660260A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682071A (en) * 1982-05-28 1987-07-21 The General Electric Company, P.L.C. Lamps and ribbon seals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682071A (en) * 1982-05-28 1987-07-21 The General Electric Company, P.L.C. Lamps and ribbon seals

Also Published As

Publication number Publication date
FR59318E (en) 1954-05-24
FR980586A (en) 1951-05-15

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