GB519719A - Improvements in and relating to electric discharge lamps - Google Patents

Improvements in and relating to electric discharge lamps

Info

Publication number
GB519719A
GB519719A GB2505438A GB2505438A GB519719A GB 519719 A GB519719 A GB 519719A GB 2505438 A GB2505438 A GB 2505438A GB 2505438 A GB2505438 A GB 2505438A GB 519719 A GB519719 A GB 519719A
Authority
GB
United Kingdom
Prior art keywords
discharge lamps
relating
electric discharge
discharge
pearce
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
GB2505438A
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.)
PEARCE SIGNS Ltd
Original Assignee
PEARCE SIGNS 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 PEARCE SIGNS Ltd filed Critical PEARCE SIGNS Ltd
Priority to GB2505438A priority Critical patent/GB519719A/en
Publication of GB519719A publication Critical patent/GB519719A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/38Devices for influencing the colour or wavelength of the light
    • H01J61/42Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

519,719. Discharge lamps. PEARCE, J. H. G., and PEARCE SIGNS, Ltd. Aug. 25, 1938, No. 25054. [Class 39 (i)] In order that in a discharge lamp with luminescent material on the inner surface of the envelope or on surfaces within it the luminescent material may be in actual contact with the discharge the tube is filled with neon at a pressure of 10.1-20 mm. and the tube is of comparatively small diameter, preferably from 4-8 mm.
GB2505438A 1938-08-25 1938-08-25 Improvements in and relating to electric discharge lamps Expired GB519719A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2505438A GB519719A (en) 1938-08-25 1938-08-25 Improvements in and relating to electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2505438A GB519719A (en) 1938-08-25 1938-08-25 Improvements in and relating to electric discharge lamps

Publications (1)

Publication Number Publication Date
GB519719A true GB519719A (en) 1940-04-04

Family

ID=10221476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2505438A Expired GB519719A (en) 1938-08-25 1938-08-25 Improvements in and relating to electric discharge lamps

Country Status (1)

Country Link
GB (1) GB519719A (en)

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