GB436413A - Improvements in or relating to electric discharge devices - Google Patents

Improvements in or relating to electric discharge devices

Info

Publication number
GB436413A
GB436413A GB2532134A GB2532134A GB436413A GB 436413 A GB436413 A GB 436413A GB 2532134 A GB2532134 A GB 2532134A GB 2532134 A GB2532134 A GB 2532134A GB 436413 A GB436413 A GB 436413A
Authority
GB
United Kingdom
Prior art keywords
discharge
envelope
tube
mercury
ultra
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
GB2532134A
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB2532134A priority Critical patent/GB436413A/en
Publication of GB436413A publication Critical patent/GB436413A/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
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence

Landscapes

  • Discharge Lamp (AREA)

Abstract

436,413. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London. - (Patent - Treuhand-Ges. fur Elektrische Gl³hlampen, 11, Ehrenbergstrasse, Berlin) Sept. 3, 1934, No. 25321. [Class 39 (i)] Lamps in which luminescent material is excited by ultra-violet radiation from a mercury-vapour discharge are operated at a frequency exceeding 10<6> cycles per second and at a current density of the discharge below 10 milliamps. per sq. cm., so that the luminescent light is not modified by visible light from the discharge. The vapour pressure of the mercury is below À01 mm. and neon or argon may be added at a pressure of a few mm. The fluorescent material may be inside or on the envelope or between double walls of the discharge tube or may be on screens associated with the envelope or within a fitting housing the tube, the envelope being transparent to ultra-violet radiation. The electrodes of the tube may be external or internal and in the latter case may be thermionic. Colour filters may be added.
GB2532134A 1934-09-03 1934-09-03 Improvements in or relating to electric discharge devices Expired GB436413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2532134A GB436413A (en) 1934-09-03 1934-09-03 Improvements in or relating to electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2532134A GB436413A (en) 1934-09-03 1934-09-03 Improvements in or relating to electric discharge devices

Publications (1)

Publication Number Publication Date
GB436413A true GB436413A (en) 1935-10-10

Family

ID=10225798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2532134A Expired GB436413A (en) 1934-09-03 1934-09-03 Improvements in or relating to electric discharge devices

Country Status (1)

Country Link
GB (1) GB436413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747696C (en) * 1936-09-29 1944-10-11 Electric discharge tubes with a luminescent glass wall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747696C (en) * 1936-09-29 1944-10-11 Electric discharge tubes with a luminescent glass wall

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