GB653631A - Electron beam control apparatus - Google Patents
Electron beam control apparatusInfo
- Publication number
- GB653631A GB653631A GB664/48A GB66448A GB653631A GB 653631 A GB653631 A GB 653631A GB 664/48 A GB664/48 A GB 664/48A GB 66448 A GB66448 A GB 66448A GB 653631 A GB653631 A GB 653631A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- insulating
- coils
- rings
- flanges
- 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
- 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)
- Magnetic Resonance Imaging Apparatus (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
653,631. Electron beam apparatus. RADIO CORPORATION OF AMERICA..Jan. 8, 1948, No. 664. Convention date, Feb. 19, 1947. [Class 39 (i)] An electrostatic shield for screening electron beam apparatus from the magnetic deflecting coils comprises a number of sets of conducting strips, each set of which are electrically connected together. The shield may be made from kraft paper 120 which is coated on both sides with tin-foil 126, cut as shown in Fig. 5 and slotted at the sides so that, when rolled into a cylinder, the ends can be bent to form flanges which can be clamped. An image orthicon is provided with deflecting coils, 43, 60, Fig. 1, focusing coils 15, 16, 17, which can be independently excited, a supplementary focusing coil 83 and an alignment coil 70. Horizontal deflecting coils 43 are mounted on the insulating cylinder 40 through wrappings 42 of fish paper and of the shielding material, and the vertical coils 60 are arranged on further wrappings 56 of fish paper and of the shielding material and are finally covered with fish paper and acetate cloth. The coils are secured through insulating rings between countersunk metal rings 46, 49 which, with flanged rings 45, 50 clamp the flanged ends of the shields 42, 56. A metal cylinder 65 has end flanges, extending in opposite directions, and holes for housing the coil leads which are connected to terminals 67 on the insulating ring 66. The alignment coil 70 is housed between copper cylinders 71, 72 and is connected to terminals 74. Further shielding material is wrapped about the insulating cylinder 10 so that its end flanges are clamped between countersunk flanges 11, 12. The focusing coils 15, 16, 17 are mounted thereon through further wrappings and are separated by insulating-rings 18, 19, 21 and a ring 20 made of the material known under the Registered Trade Mark " Mumetal." The coils are covered alternately with insulating material and layers which consist of wound steel strips 27 spaced by waxed twine 28 and finally with acetate cloth. The focusing coil 83 is located between flanges 81, 82 on the metal cylinder 80 which fits within the cylinder 10 and houses the metal ring 85, the " Mumetal " rings 84, 92, coated with insulating material, an insulating cylinder 90 and a terminal socket 94 for the orthicon. Copper strips 93 connect the terminal sockets to terminals 94. An exploded view (Fig. 3, not shown) indicates how the various parts engage and also the main aluminium supporting plates one of which carries the hand-operated gears for adjustment of the coils, e.g. through the gear-wheels 77, 80a, Fig. 1, and also a collar which is lined with phosphor bronze cushioning-rings within which one end of the orthicon can be secured by a screw. The collar can also be adjustably rotated by hand-gearing on the supporting plate. In modifications, the cylinder 80, Fig. 1, has the major part of the surface to the left of the flange 82 cut away to join two windows which are filled with insulating material or is slotted axially to provide the fingers 156, Fig. 7, which are secured at their ends by rivets to an insulating ring 160 riveted to the end ring 151. In another form, adjacent fingers are integral with the cylinder 80 at their opposite ends.
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 |
---|---|
GB653631A true GB653631A (en) | 1951-05-23 |
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 After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4966/48A Expired GB666854A (en) | 1947-02-19 | 1948-02-19 | Improvements in or relating to cathode ray tubes |
Country Status (6)
Country | Link |
---|---|
US (2) | US2490731A (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
- BE BE480460D patent/BE480460A/xx unknown
- NL NL80751D patent/NL80751C/xx active
- FR FR960166D patent/FR960166A/fr not_active Expired
- BE BE480411D patent/BE480411A/xx unknown
- NL NL666608401A patent/NL138787B/en unknown
- FR FR960167D patent/FR960167A/fr not_active Expired
-
1947
- 1947-02-19 US US729421A patent/US2490731A/en not_active Expired - Lifetime
- 1947-02-19 US US729422A patent/US2463720A/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 |
GB666854A (en) | 1952-02-20 |
NL80751C (en) | |
NL138787B (en) | |
FR960166A (en) | 1950-04-14 |
US2490731A (en) | 1949-12-06 |
FR960167A (en) | 1950-04-14 |
BE480411A (en) | |
BE480460A (en) | |
US2463720A (en) | 1949-03-08 |
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