GB534627A - Improvements in or relating to electron focussing systems - Google Patents
Improvements in or relating to electron focussing systemsInfo
- Publication number
- GB534627A GB534627A GB25217/39A GB2521739A GB534627A GB 534627 A GB534627 A GB 534627A GB 25217/39 A GB25217/39 A GB 25217/39A GB 2521739 A GB2521739 A GB 2521739A GB 534627 A GB534627 A GB 534627A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- relating
- focussing systems
- electron focussing
- electrode
- 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
- 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
- H01J29/48—Electron guns
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Cold Cathode And The Manufacture (AREA)
Abstract
534,627. Cathode-ray tubes. BROADWAY, L. F. Sept. 7, 1939, No. 25217. [Class 39 (i)] In a cathode-ray tube the cathode C is convex and the modulating electrode M opposite the cathode is of fine gauge shaped to conform with the cathode. The electrode M is run mainly slightly positive to the cathode, the field from the focusing electrodes Al, A2 not penetrating the gauze; as a consequence there is no cross over of the beam between the cathode and the fluorescent screen S. Specification 472,539 is referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB255241X | 1939-09-07 | ||
GB250740X | 1940-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB534627A true GB534627A (en) | 1941-03-12 |
Family
ID=26257471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25217/39A Expired GB534627A (en) | 1939-09-07 | 1939-09-07 | Improvements in or relating to electron focussing systems |
Country Status (5)
Country | Link |
---|---|
US (1) | US2283041A (en) |
CH (1) | CH255241A (en) |
DE (1) | DE839837C (en) |
FR (1) | FR939215A (en) |
GB (1) | GB534627A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462082A (en) * | 1941-12-19 | 1949-02-22 | Int Standard Electric Corp | Thermionic valve |
US2482151A (en) * | 1944-08-18 | 1949-09-20 | Philips Lab Inc | Cathode-ray projection tube |
US2672568A (en) * | 1951-03-27 | 1954-03-16 | Int Standard Electric Corp | Electron gun for cathode-ray tubes |
US3143685A (en) * | 1961-07-24 | 1964-08-04 | Multi Tron Lab Inc | Character display cathode ray tube |
US3377492A (en) * | 1965-08-03 | 1968-04-09 | Hughes Aircraft Co | Flood gun for storage tubes having a dome-shaped cathode and dome-shaped grid electrodes |
GB2087054B (en) * | 1980-09-19 | 1984-03-21 | Shinryo Air Cond | Method and apparatus for incinerating sewage sludge |
-
1939
- 1939-09-07 GB GB25217/39A patent/GB534627A/en not_active Expired
-
1940
- 1940-08-30 US US354882A patent/US2283041A/en not_active Expired - Lifetime
-
1946
- 1946-08-13 FR FR939215D patent/FR939215A/en not_active Expired
- 1946-11-25 CH CH255241D patent/CH255241A/en unknown
-
1950
- 1950-09-21 DE DEE2163A patent/DE839837C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH255241A (en) | 1948-06-15 |
FR939215A (en) | 1948-11-08 |
US2283041A (en) | 1942-05-12 |
DE839837C (en) | 1952-05-26 |
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