GB1131619A - Improvements in or relating to beam convergence devices for colour television tubes - Google Patents
Improvements in or relating to beam convergence devices for colour television tubesInfo
- Publication number
- GB1131619A GB1131619A GB11699/66A GB1169966A GB1131619A GB 1131619 A GB1131619 A GB 1131619A GB 11699/66 A GB11699/66 A GB 11699/66A GB 1169966 A GB1169966 A GB 1169966A GB 1131619 A GB1131619 A GB 1131619A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gun
- yoke
- beams
- support
- base
- 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)
- Magnetic Resonance Imaging Apparatus (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
1,131,619. Colour television tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 17 March, 1966 [20 March, 1965], No. 11699/66. Heading H1D. In a beam convergence device for the lateral displacement of the electron beams from three electron guns 3, 5, 7 in a colour television tube, symmetrical displacements of the three beams are effected by two oppositely directed transverse magnetic fields derived from permanent magnets 23 mounted in a rotatable magnet support 21, one of which fields acts on the beam from gun 3 whilst the other influences the beams from guns 5, 7. The magnetic fields are shaped by a soft ferromagnetic yoke 13 and by two field conductors fastened to a non-magnetic supporting strip 15. The yoke 13 is substantially in the form of a U of strip material having a base and ends directed inwardly towards guns 5, 7 to meet the tube neck 1 tangentially. The field conductors are symmetrically placed either side of gun 3 with a portion 19 parallel to the base of the yoke and affixed to the strip 15 and a portion 17 extending tangentially along the tube neck. The two permanent magnets 23 are held adjacent the portions 19 in magnet support 21 between the base of the yoke and strip 15 and are magnetized at right angles to the longitudinal axis of the support 21. With a portion 25 of the yoke base extending inwardly towards gun 3 and ferromagnetic gun support ing members 9, the field produced is as indicated in the Figure and its strength may be varied uniformly by rotating the support 21 about its longitudinal axis. Periodic displacements of the electron beams may be produced by either a coil 39, influencing beam from gun 3 only, or two coils 41, affecting all beams, to provide for dynamic convergence.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6503575A NL6503575A (en) | 1965-03-20 | 1965-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1131619A true GB1131619A (en) | 1968-10-23 |
Family
ID=19792709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11699/66A Expired GB1131619A (en) | 1965-03-20 | 1966-03-17 | Improvements in or relating to beam convergence devices for colour television tubes |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE678114A (en) |
| DE (1) | DE1269163B (en) |
| ES (1) | ES324374A1 (en) |
| GB (1) | GB1131619A (en) |
| NL (1) | NL6503575A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1367061A (en) * | 1962-07-06 | 1964-07-17 | Rca Corp | Cathode ray tubes |
-
1965
- 1965-03-20 NL NL6503575A patent/NL6503575A/xx unknown
-
1966
- 1966-03-16 DE DEP1269A patent/DE1269163B/en not_active Withdrawn
- 1966-03-17 GB GB11699/66A patent/GB1131619A/en not_active Expired
- 1966-03-18 ES ES0324374A patent/ES324374A1/en not_active Expired
- 1966-03-18 BE BE678114D patent/BE678114A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES324374A1 (en) | 1967-02-01 |
| BE678114A (en) | 1966-09-19 |
| NL6503575A (en) | 1966-09-21 |
| DE1269163B (en) | 1968-05-30 |
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