GB666854A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB666854A GB666854A GB4966/48A GB496648A GB666854A GB 666854 A GB666854 A GB 666854A GB 4966/48 A GB4966/48 A GB 4966/48A GB 496648 A GB496648 A GB 496648A GB 666854 A GB666854 A GB 666854A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- deflecting
- coils
- tube
- focusing
- 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
- 239000000696 magnetic material Substances 0.000 abstract 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 3
- 241000251468 Actinopterygii Species 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- 230000004907 flux Effects 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 abstract 1
- 229910000906 Bronze Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 239000010974 bronze Substances 0.000 abstract 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
- H01J31/34—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at cathode potential, e.g. orthicon
- H01J31/36—Tubes with image amplification section, e.g. image-orthicon
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
666,854. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 19, 1948 [Feb. 19, 1947], No. 4966/48. Class 39 (i). In a television pick-up tube having a low velocity scanning beam and external electromagnetic focusing and deflecting means, parts of the tube outside the deflecting area are screened therefrom by a low - reluctance ferromagnetic path for the fringe flux from the deflecting means. The deflecting coils 43, 60, Fig. 1, for an image orthicon are mounted through electrostatic screens and fish paper wrappings on an insulating cylinder 40, the leads theretor passing through holes in a cylindrical shell 65 to a terminal strip 67. The ends of the screens are clamped between members 45, 46, 49, 50. An alignment coil 70 is housed between copper cylinders 71, 72 closed by copper rings and the leads therefor are connected to terminals 74. Focusing coils 15, 16, 17, separately energized, are mounted on an insulating cylinder 10 through a wound electrostatic screen 13, clamped at its ends by members 11, 12, and are separated by insulating rings 18, 19, 21. The coils are covered with alternate layers of steel screens 27, separated by waxed twine, and fish paper and a final layer of acetate cloth. A further focusing coil 83 is housed between flanges 81, 82 on the cylinder 80 which is fitted within the cylinder 10 and fastened to the deflecting arrangement. A ring 84 of magnetic material is arranged within the end of the cylinder 80 so that it is coplanar with the mamber 20, which is of similar magnetic material, and, with a further ring 95, of magnetic metal, forms a path for the fringe flux of the deflecting coils. The low-velocity beam in the enlarged section of the tube which contains the target is screened thereby. Tube contact pins may engage with sockets on a holder 92, mounted within an insulating cylinder 90, a flange 91 on which carries terminals 94 which are connected to the holder 92 by copper strips 93. The coil assembly may be secured between aluminium end-plates (Fig. 2, not shown) to one, 111, Fig. 3, of which is bolted brackets 116, 117 carrying gear-wheels 121, 122 for rotating the deflecting, focusing and alignment coils. The tube neck is secured through a bronze spring winding 125 and by a set-screw within a rotatable yoke 118. In a modification, Fig. 4 (not shown), the ring 84, Fig. 1, is pinned to two other rings of magnetic material, one of which surrounds the inner end of the enlarged tube section containing the target. The housing for the focusing coils may consist of an iron cylinder instead of the steel strips. In a further form, that end of the coil assembly which surrounds the tube section containing the multiplier 150 Fig. 6, is fitted with coplanar rings 142, 143 of magnetic material arranged between insulating rings 140, 141, 144, 145. The extension of the cylinder 80, Fig. 1, supporting the focusing coil 83, may be cut away to leave two intermediate strips, Fig. 7 (not shown), which support the end ring 85, or alternatively, may be cut to provide a number of longitudinal strips 156, Fig. 8, the free ends of which are secured to an insulating ring 160 and is riveted to the end ring 151. The free ends of the strips may extend in opposite directions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US729422A US2463720A (en) | 1947-02-19 | 1947-02-19 | Electron beam influencing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB666854A true GB666854A (en) | 1952-02-20 |
Family
ID=24930948
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB664/48A Expired GB653631A (en) | 1947-02-19 | 1948-01-08 | Electron beam control apparatus |
GB4966/48A Expired GB666854A (en) | 1947-02-19 | 1948-02-19 | Improvements in or relating to cathode ray tubes |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB664/48A Expired GB653631A (en) | 1947-02-19 | 1948-01-08 | Electron beam control apparatus |
Country Status (6)
Country | Link |
---|---|
US (2) | US2463720A (en) |
BE (2) | BE480411A (en) |
DE (1) | DE967353C (en) |
FR (2) | FR960167A (en) |
GB (2) | GB653631A (en) |
NL (2) | NL138787B (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL89166C (en) * | 1950-11-06 | |||
US2880338A (en) * | 1953-10-17 | 1959-03-31 | Pye Ltd | Television pick-up tube |
NL193774A (en) * | 1954-01-15 | |||
US2845562A (en) * | 1954-07-07 | 1958-07-29 | Rca Corp | Electromagnetic deflection yoke |
US2837674A (en) * | 1954-11-17 | 1958-06-03 | Rca Corp | Electro-magnetic deflection apparatus |
US2761989A (en) * | 1955-02-28 | 1956-09-04 | Rca Corp | Cathode ray tube device |
US2977501A (en) * | 1956-06-14 | 1961-03-28 | Edgerton Germeshausen & Grier | Cathode-ray apparatus and method |
US3345537A (en) * | 1965-02-12 | 1967-10-03 | Melpar Inc | Photoelectric shield including a dielectric sheet sandwiched between two metal sheets |
JPS4936819U (en) * | 1972-05-18 | 1974-04-01 | ||
JPS49125619U (en) * | 1973-02-27 | 1974-10-28 | ||
US4237438A (en) * | 1978-12-19 | 1980-12-02 | Rca Corporation | High resistance continuous shield for reduced capacitive coupling in a deflection yoke |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2085742A (en) * | 1930-06-14 | 1937-07-06 | Farnsworth Television Inc | Electron image amplifier |
US2188579A (en) * | 1933-05-27 | 1940-01-30 | Loewe Radio Inc | Cathode ray tube, more particularly for television purposes |
US2172733A (en) * | 1935-03-29 | 1939-09-12 | Deflection coil | |
US2047159A (en) * | 1935-07-17 | 1936-07-07 | Galvin Mfg Corp | Electrostatic shield |
IT349671A (en) * | 1936-02-28 | |||
BE427739A (en) * | 1937-04-26 | |||
US2234998A (en) * | 1938-12-06 | 1941-03-18 | Robert H Worrall | Electrical shield |
US2314409A (en) * | 1940-09-28 | 1943-03-23 | Bell Telephone Labor Inc | Magnetic coil structure |
US2362034A (en) * | 1941-06-25 | 1944-11-07 | William F Stahl | Shield for electrical currents |
-
0
- NL NL80751D patent/NL80751C/xx active
- BE BE480460D patent/BE480460A/xx unknown
- FR FR960166D patent/FR960166A/fr not_active Expired
- FR FR960167D patent/FR960167A/fr not_active Expired
- BE BE480411D patent/BE480411A/xx unknown
- NL NL666608401A patent/NL138787B/en unknown
-
1947
- 1947-02-19 US US729422A patent/US2463720A/en not_active Expired - Lifetime
- 1947-02-19 US US729421A patent/US2490731A/en not_active Expired - Lifetime
-
1948
- 1948-01-08 GB GB664/48A patent/GB653631A/en not_active Expired
- 1948-02-19 GB GB4966/48A patent/GB666854A/en not_active Expired
-
1950
- 1950-05-23 DE DER1818A patent/DE967353C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE967353C (en) | 1957-11-07 |
US2490731A (en) | 1949-12-06 |
NL80751C (en) | |
BE480411A (en) | |
NL138787B (en) | |
FR960166A (en) | 1950-04-14 |
US2463720A (en) | 1949-03-08 |
GB653631A (en) | 1951-05-23 |
BE480460A (en) | |
FR960167A (en) | 1950-04-14 |
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