GB703323A - Improvements relating to cathode ray tubes - Google Patents
Improvements relating to cathode ray tubesInfo
- Publication number
- GB703323A GB703323A GB3343/48A GB334348A GB703323A GB 703323 A GB703323 A GB 703323A GB 3343/48 A GB3343/48 A GB 3343/48A GB 334348 A GB334348 A GB 334348A GB 703323 A GB703323 A GB 703323A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- electrode
- electrons
- pair
- produce
- 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
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 238000005040 ion trap Methods 0.000 abstract 1
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
- H01J29/84—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection
- H01J29/845—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection by means of magnetic systems
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Physical Vapour Deposition (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
703,323. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 5, 1948 [Feb. 5, 1947], No. 3343/48. Class 39(1) An ion trap comprises a pair of electrodes which surround the beam and produce an asymmetrical field which deflects the beam away from the tube axis, a magnetic field returning to the axis only the electrons in the beam. Ceramic rods 18, 20, Fig. 1, support a control electrode 24, and cylindrical electrodes 36, 40 which have inclined adjacent ends to produce a lens which concentrates and deflects the beam. A pair of electromagnetic pole pieces 49 deflect back the electrons which are further aligned by a pair of poles 51 secured to extensions 58 on the electromagnet 55. Apertured discs 25, 37 closing the ends of electrodes 24, 36 produce a cross-over at point 39. The electrode 40 is also closed by apertured discs, and the beam is deflected by scanning coils 9 and focused on to the fluorescent screen 11 by the final anode 46 consisting of a graphite coating. The field from magnets 49 may be concentrated by L-shaped polepieces mounted on opposite sides of electrode 36 to secure sharper deflection of the electrons. The electrodes 36, 40 consist of semi-cylindrical sheet members welded together at their sides which join the supports. They may be formed by cutting a cylinder at the required angle which is preferably 76¢ degrees to the axis. In another form, the electrode 40 is connected by spring fingers to the anode coating 46, the beam being focused electromagnetically. The inclined electrostatic lens may be produced by inclined apertured discs mounted within the adjacent ends of the electrodes 36, 40 Fig. 5 (not shown), or by providing only one of the adjacent ends of the electrodes 36, 40 with an inclined face. The Specification includes examples of the electrode potential. Specification 668,161 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US726589A US2496127A (en) | 1947-02-05 | 1947-02-05 | Electron gun for cathode-ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB703323A true GB703323A (en) | 1954-02-03 |
Family
ID=24919226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3343/48A Expired GB703323A (en) | 1947-02-05 | 1948-02-05 | Improvements relating to cathode ray tubes |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2496127A (en) |
| GB (1) | GB703323A (en) |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2733365A (en) * | 1956-01-31 | hoagland | ||
| US2592242A (en) * | 1946-07-02 | 1952-04-08 | Gen Electric | Electron gun and mounting therefor |
| US2555850A (en) * | 1948-01-28 | 1951-06-05 | Nicholas D Glyptis | Ion trap |
| BE492805A (en) * | 1948-12-21 | |||
| US2539156A (en) * | 1949-01-19 | 1951-01-23 | Tele Tone Radio Corp | Ion trap magnet |
| US2552341A (en) * | 1949-02-03 | 1951-05-08 | Clarostat Mfg Co Inc | Magnetic structure for use in ion-traps |
| US2553792A (en) * | 1949-10-01 | 1951-05-22 | Indiana Steel Products Co | Ion trap and centering magnet assembly |
| US2552342A (en) * | 1949-11-17 | 1951-05-08 | Clarostat Mfg Co Inc | Magnetic structure for use in ion-traps |
| US2744208A (en) * | 1949-12-02 | 1956-05-01 | Rca Corp | Ion trap electron gun |
| US2596508A (en) * | 1950-04-19 | 1952-05-13 | Rauland Corp | Electron gun for cathode-ray tubes |
| NL153273B (en) * | 1950-05-02 | Bosch Gmbh Robert | DRAIN DEVICE FOR THE CONTINUOUS DRAINAGE OF A SUGAR MASS FROM A VACUUM BOILER FOR VAPORING A VISCOUS MASS OF SUGAR. | |
| US2565533A (en) * | 1950-05-19 | 1951-08-28 | Rauland Corp | Cathode-ray tube |
| US2562242A (en) * | 1950-06-06 | 1951-07-31 | Du Mont Allen B Lab Inc | Split anode for bent gun ion trap cathode-ray tubes |
| US2542924A (en) * | 1950-06-21 | 1951-02-20 | Myron R Heppner | Ion trap |
| US2582402A (en) * | 1950-09-29 | 1952-01-15 | Rauland Corp | Ion trap type electron gun |
| US2658160A (en) * | 1951-11-23 | 1953-11-03 | Rauland Corp | Image-reproducing device |
| US2707246A (en) * | 1952-09-04 | 1955-04-26 | Gen Electric | Combination focusing-ion trap structures for cathode-ray tubes |
| US2793312A (en) * | 1952-12-24 | 1957-05-21 | Rca Corp | Electron gun structure |
| NL87923C (en) * | 1953-02-13 | |||
| GB747380A (en) * | 1953-02-16 | 1956-04-04 | Loewe Opta Ag | Improvements in cathode ray tubes with ion traps |
| NL87649C (en) * | 1953-03-18 | |||
| US2728007A (en) * | 1953-07-01 | 1955-12-20 | Rca Corp | Cathode ray tube gun structure |
| NL189231B (en) * | 1953-08-14 | Fuji Photo Film Co Ltd | DEVICE FOR COPYING A RADIATION IMAGE RECORDED ON A SUPPORT FOR A MEDICAL DIAGNOSIS. | |
| NL183551B (en) * | 1953-12-12 | Babcock & Wilcox Co | PROCEDURE FOR MANUFACTURE OF A NUCLEAR FUEL TABLE. | |
| US2957106A (en) * | 1954-08-12 | 1960-10-18 | Rca Corp | Plural beam gun |
| BE543332A (en) * | 1954-12-06 | |||
| US2907908A (en) * | 1955-09-01 | 1959-10-06 | Philco Corp | Apparatus for preventing distortion in plural beam cathode ray tubes |
| US2853639A (en) * | 1956-02-27 | 1958-09-23 | Westinghouse Electric Corp | Cathode ray tube |
| US4155028A (en) * | 1975-11-03 | 1979-05-15 | Hewlett-Packard Company | Electrostatic deflection system for extending emitter life |
| NL7804518A (en) * | 1978-04-27 | 1979-10-30 | Philips Nv | CATHOD BEAM TUBE. |
| CN104759623B (en) * | 2015-03-10 | 2017-06-23 | 清华大学 | Using the increasing material manufacturing device of electron beam laser compound scanning |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1942572A (en) * | 1927-08-01 | 1934-01-09 | Rogowski Walter | Cathode ray oscillograph |
| GB480948A (en) * | 1936-07-25 | 1938-02-25 | Frederick Hermes Nicoll | Improvements in or relating to cathode ray tubes |
| US2211613A (en) * | 1936-08-14 | 1940-08-13 | Hygrade Sylvania Corp | Cathode ray tube |
| US2274586A (en) * | 1939-02-25 | 1942-02-24 | Philco Radio & Television Corp | Cathode ray tube |
| GB498491A (en) * | 1937-07-09 | 1939-01-09 | A C Cossor Holdings Ltd | Improvements in cathode ray tubes |
| GB518221A (en) * | 1938-08-12 | 1940-02-21 | Ferranti Ltd | Improvements in or relating to cathode ray tubes |
-
1947
- 1947-02-05 US US726589A patent/US2496127A/en not_active Expired - Lifetime
-
1948
- 1948-02-05 GB GB3343/48A patent/GB703323A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2496127A (en) | 1950-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB703323A (en) | Improvements relating to cathode ray tubes | |
| US2456474A (en) | Electric discharge device | |
| US2211613A (en) | Cathode ray tube | |
| GB698005A (en) | Improvements in or relating to electron discharge devices | |
| GB543752A (en) | Improvements in electron discharge devices | |
| GB642083A (en) | Improvements relating to cathode ray tubes | |
| GB674758A (en) | Improvements in or relating to electron discharge devices | |
| US2347990A (en) | Electric discharge tube | |
| US4310776A (en) | Cathode-ray tube | |
| GB687561A (en) | Improvements in or relating to cathode ray tubes | |
| GB735632A (en) | Improvements relating to cathode ray tubes and arrangements therefor | |
| GB609480A (en) | Improvements in or relating to a electron discharge apparatus in which a flattened or ribbon-shaped electron beam is employed | |
| US2707246A (en) | Combination focusing-ion trap structures for cathode-ray tubes | |
| GB679348A (en) | Improvements in or relating to cathode ray tubes | |
| GB697188A (en) | Improvements in or relating to cathode-ray tubes | |
| GB728900A (en) | Improvements in or relating to electron gun structures for use in cathode ray tubes | |
| US2152825A (en) | Braun tube | |
| US2727171A (en) | Ion trap for a cathode ray tube | |
| GB747707A (en) | Improvements relating to electron guns | |
| US2569517A (en) | Magnet for cathode-ray tube ion traps | |
| US2836752A (en) | Beam generating system for cathoderay tubes employing an ion trap | |
| US4801843A (en) | Display tube with magnetic correction elements | |
| GB551665A (en) | Improvements in cathode ray tubes | |
| US2685046A (en) | Magnetron | |
| US2259099A (en) | Electron discharge tube |