GB603939A - Improvements in or relating to electric discharge tubes having a directional electron beam - Google Patents
Improvements in or relating to electric discharge tubes having a directional electron beamInfo
- Publication number
- GB603939A GB603939A GB29544/45A GB2954445A GB603939A GB 603939 A GB603939 A GB 603939A GB 29544/45 A GB29544/45 A GB 29544/45A GB 2954445 A GB2954445 A GB 2954445A GB 603939 A GB603939 A GB 603939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- relating
- electron beam
- electric discharge
- discharge tubes
- 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
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/32—Tubes with plural reflection, e.g. Coeterier tube
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/64—Magnetic lenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/029—Schematic arrangements for beam forming
Landscapes
- Microwave Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Discharge Lamp (AREA)
- Cold Cathode And The Manufacture (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
603,939. Cathode-ray tubes. PHILIPS LAMPS, Ltd. Nov. 6, 1945, No. 29544. Convention date, July 3, 1940. [Class 39 (i)] Narrow, sharply-defined cathode-ray beams are produced by mounting the emissive surface of the cathode 1 at the mouth of a surrounding magnetic body 5 which is magnetized in the direction of the beam so as to produce a magnetically neutral point in the neighbourhood of the cathode. The tube 5 may be a permanent magnet or polarized by an external coil. Preferably,'the surface of the cathode is concave and conforms with a control electrode so as to produce a converging electric field. The body 5 may also be biassed negatively relatively to the cathode. The subject-matter of this Specification is identical with that of Specification 554,828.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL219503X | 1940-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB603939A true GB603939A (en) | 1948-06-25 |
Family
ID=19779267
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14786/41A Expired GB554828A (en) | 1940-07-03 | 1941-11-17 | Improvements in or relating to electric discharge tubes having a directional electron beam |
GB29544/45A Expired GB603939A (en) | 1940-07-03 | 1945-11-06 | Improvements in or relating to electric discharge tubes having a directional electron beam |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14786/41A Expired GB554828A (en) | 1940-07-03 | 1941-11-17 | Improvements in or relating to electric discharge tubes having a directional electron beam |
Country Status (8)
Country | Link |
---|---|
US (1) | US2347990A (en) |
BE (1) | BE442068A (en) |
CH (1) | CH219503A (en) |
DE (1) | DE862039C (en) |
FR (1) | FR874922A (en) |
GB (2) | GB554828A (en) |
NL (1) | NL60887C (en) |
SE (1) | SE106343C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3225248A (en) * | 1961-05-27 | 1965-12-21 | United Aircraft Corp | Device for producing a high-intensity beam of charge carriers of small aperture |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL254372A (en) * | 1930-07-02 | |||
BE508323A (en) * | 1951-01-11 | |||
US2619607A (en) * | 1951-03-10 | 1952-11-25 | Glaser Steers Corp | Internal focusing device |
US2748307A (en) * | 1952-03-06 | 1956-05-29 | Gen Electric | Magnetically forcused electron discharge device |
DE961735C (en) * | 1953-03-19 | 1957-04-11 | Fernseh Gmbh | Method for centering the electron beam, especially for television picture tubes, with a permanent magnet surrounding the beam axis in a ring shape and arrangement for carrying out the method |
DE1059565B (en) * | 1955-01-15 | 1959-06-18 | Sebel S A | Electronic lamp for lighting purposes |
NL215805A (en) * | 1956-02-24 | |||
NL282676A (en) * | 1961-08-31 | |||
US3217200A (en) * | 1962-01-23 | 1965-11-09 | Gen Electric | Internal magnetic lens for electron beams |
DE2856244A1 (en) * | 1978-12-27 | 1980-07-03 | Kernforschungsanlage Juelich | ELECTRONIC SHOCK SPECTROMETER |
FR2641899A1 (en) * | 1989-01-17 | 1990-07-20 | Thomson Tubes Electroniques | ELECTRON GUN WITH AN ACTIVE DEVICE PRODUCING A MAGNETIC FIELD IN THE VICINITY OF THE CATHODE |
-
0
- NL NL60887D patent/NL60887C/xx active
- BE BE442068D patent/BE442068A/xx unknown
-
1941
- 1941-07-01 DE DEN2330D patent/DE862039C/en not_active Expired
- 1941-07-02 CH CH219503D patent/CH219503A/en unknown
- 1941-07-03 SE SE413541A patent/SE106343C1/xx unknown
- 1941-08-28 FR FR874922D patent/FR874922A/en not_active Expired
- 1941-11-17 GB GB14786/41A patent/GB554828A/en not_active Expired
-
1942
- 1942-02-12 US US430602A patent/US2347990A/en not_active Expired - Lifetime
-
1945
- 1945-11-06 GB GB29544/45A patent/GB603939A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3225248A (en) * | 1961-05-27 | 1965-12-21 | United Aircraft Corp | Device for producing a high-intensity beam of charge carriers of small aperture |
Also Published As
Publication number | Publication date |
---|---|
DE862039C (en) | 1953-01-08 |
GB554828A (en) | 1943-07-21 |
FR874922A (en) | 1942-08-31 |
NL60887C (en) | |
US2347990A (en) | 1944-05-02 |
CH219503A (en) | 1942-02-15 |
SE106343C1 (en) | 1943-01-19 |
BE442068A (en) |
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