GB1073898A - Beam convergence apparatus for plural-beam cathode-ray tubes - Google Patents
Beam convergence apparatus for plural-beam cathode-ray tubesInfo
- Publication number
- GB1073898A GB1073898A GB41071/65A GB4107165A GB1073898A GB 1073898 A GB1073898 A GB 1073898A GB 41071/65 A GB41071/65 A GB 41071/65A GB 4107165 A GB4107165 A GB 4107165A GB 1073898 A GB1073898 A GB 1073898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- magnetized
- ferrite
- convergence
- arrangement
- 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
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/702—Convergence correction arrangements therefor
- H01J29/703—Static convergence systems
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
1,073,898. Colour television tubes. ZENITH RADIO CORPORATION. Sept. 27, 1965 [Oct. 2, 1964], No. 41071/65. Heading H1D. The " blue lateral " convergence magnet of a three-gun shadow-mask colour television tube has a central magnet, or magnetized central part 48, Fig. 5, of a ferrite rod 41, for shifting the blue beam and outer magnets or ferrite parts 49, 50 magnetized with different, or preferably opposite, orientations for neutralizing or cancelling out the effects on the red and green beams. The ferrite rod is rotatable in a bracket having polepiece legs embracing the tube neck. The arrangement may be used in conjunction with internal polepieces of the tube constituted by straps of magnetic material supporting electrodes of the electron gun. In another arrangement, Fig. 6 (not shown), the ferrite rod comprises five parts magnetized alternately in opposite directions, the rod being mounted in a bracket of non-magnetic material and the arrangement preferably being used in a system devoid of external or internal polepieces. Electromagnets may be used instead of permanent magnets and the tube also has dynamic convergence and static radial convergence systems of known type.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US401043A US3308328A (en) | 1964-10-02 | 1964-10-02 | Magnetic apparatus for converging the beams of a plural gun cathode ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1073898A true GB1073898A (en) | 1967-06-28 |
Family
ID=23586031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB41071/65A Expired GB1073898A (en) | 1964-10-02 | 1965-09-27 | Beam convergence apparatus for plural-beam cathode-ray tubes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3308328A (en) |
| ES (1) | ES318075A1 (en) |
| FR (1) | FR1073898A (en) |
| GB (1) | GB1073898A (en) |
| NL (1) | NL6512764A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3512023A (en) * | 1969-04-16 | 1970-05-12 | Kidde & Co Walter | Magnetic apparatus for laterally converging the beams of a triple gun cathode ray tube |
| US3614502A (en) * | 1969-09-16 | 1971-10-19 | Frederick F Doggett | Electron gun convergence assembly |
| US3629752A (en) * | 1970-02-04 | 1971-12-21 | Tractor Inc | Convergence unit for color television picture tube |
| US3713057A (en) * | 1972-01-14 | 1973-01-23 | Motorola Inc | Apparatus for laterally correcting the position of the blue beam in a crt |
| US3781731A (en) * | 1973-03-23 | 1973-12-25 | L Poel | Purity and blue lateral assembly for delta beam type cathode ray tube |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2591159A (en) * | 1950-05-29 | 1952-04-01 | Gilfillan Bros Inc | Magnetic means for producing compensations and other effects in a cathode-ray tube |
| US2806164A (en) * | 1954-08-02 | 1957-09-10 | Rca Corp | Beam convergence apparatus for tri-color kinescopes |
| US2880339A (en) * | 1955-01-31 | 1959-03-31 | Motorola Inc | Device for cathode ray tube |
| US2941102A (en) * | 1956-07-26 | 1960-06-14 | Sol L Reiches | Post deflection color purity correcting device for a color tv cathode ray tube and system using the same |
| US2944174A (en) * | 1958-09-18 | 1960-07-05 | Motorola Inc | Electronic image system and method |
-
1953
- 1953-04-01 FR FR1073898D patent/FR1073898A/en not_active Expired
-
1964
- 1964-10-02 US US401043A patent/US3308328A/en not_active Expired - Lifetime
-
1965
- 1965-09-27 GB GB41071/65A patent/GB1073898A/en not_active Expired
- 1965-10-01 NL NL6512764A patent/NL6512764A/xx unknown
- 1965-10-02 ES ES0318075A patent/ES318075A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3308328A (en) | 1967-03-07 |
| NL6512764A (en) | 1966-04-04 |
| ES318075A1 (en) | 1966-11-01 |
| DE1487215B2 (en) | 1972-11-16 |
| FR1073898A (en) | 1954-09-29 |
| DE1487215A1 (en) | 1969-01-16 |
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