GB410648A - Improvements in luminous electric discharge tubes - Google Patents

Improvements in luminous electric discharge tubes

Info

Publication number
GB410648A
GB410648A GB21931/33A GB2193133A GB410648A GB 410648 A GB410648 A GB 410648A GB 21931/33 A GB21931/33 A GB 21931/33A GB 2193133 A GB2193133 A GB 2193133A GB 410648 A GB410648 A GB 410648A
Authority
GB
United Kingdom
Prior art keywords
metal
layer
aug
envelope
highly reflecting
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
GB21931/33A
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
Publication of GB410648A publication Critical patent/GB410648A/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
    • H01J61/30—Vessels; Containers
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/045—Thermic screens or reflectors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

410,648. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent Treuhand Ges. fiir Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin.) Aug. 4, 1933, No. 21931. Convention date, Aug. 13, 1932. [Class 39 (i).] In luminous tubes containing metal vapour generated from a mass of metal which does not form the cathode or anode, but which is strongly heated by the discharge, cool parts of the envelope near an electrode are avoided by an opaque silver or other metal layer highly reflecting on its inner surface and deposited on the exterior of the envelope to cover hot and cool portions thereof and so reflect heat radiation from the former to the latter. The layer may also be highly reflecting on its outer surface and may cover protruding parts such as sealing- off pipes. The tube may contain permanent gas as well as the vapour. A direct-current tube may have the layer only at one end to counteract electrophoresis of the metal towards this end. Specifications 360,296 and 372,154 are referred to. The Specification as open to inspection under Sect. 91 comprises also layers of gold or platinum. This subject-matter does not appear in the Specification as accepted.
GB21931/33A 1929-01-12 1933-08-04 Improvements in luminous electric discharge tubes Expired GB410648A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE410648X 1929-01-12

Publications (1)

Publication Number Publication Date
GB410648A true GB410648A (en) 1934-05-24

Family

ID=6426192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21931/33A Expired GB410648A (en) 1929-01-12 1933-08-04 Improvements in luminous electric discharge tubes

Country Status (2)

Country Link
DE (2) DE597916C (en)
GB (1) GB410648A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966001C (en) * 1950-05-20 1957-07-04 Pintsch Electro G M B H Vapor and / or gas-filled discharge lamp, in particular fluorescent tubes
DE1123841B (en) * 1959-09-08 1962-02-15 Bodenseewerk Perkin Elmer Co Radiation source for infrared spectrophotometer
US3333132A (en) * 1964-05-19 1967-07-25 Westinghouse Electric Corp Discharge lamp having heat reflecting shields surrounding its electrodes

Also Published As

Publication number Publication date
DE597916C (en) 1934-06-02
DE599320C (en) 1934-07-29

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