GB387130A - Improvements in or relating to electric discharge tubes for generating ultra-violet rays - Google Patents
Improvements in or relating to electric discharge tubes for generating ultra-violet raysInfo
- Publication number
- GB387130A GB387130A GB3972/32A GB397232A GB387130A GB 387130 A GB387130 A GB 387130A GB 3972/32 A GB3972/32 A GB 3972/32A GB 397232 A GB397232 A GB 397232A GB 387130 A GB387130 A GB 387130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- bulb
- sulphides
- compounds
- feb
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J63/00—Cathode-ray or electron-stream lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0031—Tubes with material luminescing under electron bombardment
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
387,130. Discharge lamps. HUMMEL, C., 34, Eisenacher Strasse, Berlin. Feb. 10, 1932, No. 3972. Convention date, Feb. 11, 1931. [Class 39 (i). A fluorescent substance which emits ultra-violet light under electronic bombardment is provided within a lamp having at least one independently heated activated electrode, e.g. on an electrode or on the walls of the bulb of quartz or the like. The bulb may be filled with a noble gas or a vapour. Each electrode may consist of a hot filament and a plate as shown in Fig. 2. The fluorescent substance may be made conductive by addition of suitable metal powder, or a network, or metal sulphides. A single electrode, Fig. 4, arranged so that there is a potential drop across neighbouring points of the helices 11, 12 may provide incandescent light in addition to an electron stream. The bulb may be partly covered with a reflector such as a metal film of chromium or magnalium. Suitable fluorescent materials are iron or mercury compounds, or yttrium, lanthanum, or gadolinium compounds, which may be mixed with sulphides, selenides, or oxides of the alkali or alkaline earth metals, or with boron compounds, or sulphides or zinc or aluminium. The Specification as open to inspection under Sect. 91 also comprises lamps having cold electrodes which may be grid shaped and having a filling of noble gas or mercury vapour at a pressure of one hundredth to several mms. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE387130X | 1931-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB387130A true GB387130A (en) | 1933-02-02 |
Family
ID=6371074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3972/32A Expired GB387130A (en) | 1931-02-11 | 1932-02-10 | Improvements in or relating to electric discharge tubes for generating ultra-violet rays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB387130A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445692A (en) * | 1945-10-11 | 1948-07-20 | Gen Electric | Ultraviolet ray generator |
US2447210A (en) * | 1943-05-28 | 1948-08-17 | Edna W Roberts | Erythemal phosphor |
US2450548A (en) * | 1941-06-16 | 1948-10-05 | Gen Electric Company Inc | Erythemal phosphor |
DE754654C (en) * | 1941-07-22 | 1952-12-15 | Patra Patent Treuhand | Electric low-pressure mercury tubes with inert gas filling and a fluorescent layer attached to the inner wall of the tube |
EP0083874A2 (en) * | 1982-01-04 | 1983-07-20 | GTE Laboratories Incorporated | Beam mode fluorescent lamp |
-
1932
- 1932-02-10 GB GB3972/32A patent/GB387130A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450548A (en) * | 1941-06-16 | 1948-10-05 | Gen Electric Company Inc | Erythemal phosphor |
DE754654C (en) * | 1941-07-22 | 1952-12-15 | Patra Patent Treuhand | Electric low-pressure mercury tubes with inert gas filling and a fluorescent layer attached to the inner wall of the tube |
US2447210A (en) * | 1943-05-28 | 1948-08-17 | Edna W Roberts | Erythemal phosphor |
US2445692A (en) * | 1945-10-11 | 1948-07-20 | Gen Electric | Ultraviolet ray generator |
EP0083874A2 (en) * | 1982-01-04 | 1983-07-20 | GTE Laboratories Incorporated | Beam mode fluorescent lamp |
EP0083874A3 (en) * | 1982-01-04 | 1984-05-02 | Gte Laboratories Incorporated | Dual cathode beam mode fluorescent lamp |
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