GB545689A - Improvements relating to the construction and arrangement of electrodes in electron discharge devices - Google Patents
Improvements relating to the construction and arrangement of electrodes in electron discharge devicesInfo
- Publication number
- GB545689A GB545689A GB16256/40A GB1625640A GB545689A GB 545689 A GB545689 A GB 545689A GB 16256/40 A GB16256/40 A GB 16256/40A GB 1625640 A GB1625640 A GB 1625640A GB 545689 A GB545689 A GB 545689A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- cathode
- electrodes
- shield
- plates
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
- G06G7/485—Analogue computers for specific processes, systems or devices, e.g. simulators for determining the trajectory of particles, e.g. of electrons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/36—Tubes with flat electrodes, e.g. disc electrode
-
- 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
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/62—Electrostatic lenses
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
-
- 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
- H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/029—Schematic arrangements for beam forming
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Electron Sources, Ion Sources (AREA)
- Cold Cathode And The Manufacture (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
545,689. Cathode-ray tubes. ELECTRICAL RESEARCH PRODUCTS, Inc. Nov. 8,1940, No. 16256. Convention date, Dec. 2, 1939. [Class 39 (i)] In a cathode-ray tube using pairs of electrodes for modulating, collimating or focusing, a potential distribution along the axis of the tube is predetermined and the adjacent surfaces of the electrode pair are shaped to conform to the equipotential surfaces of the corresponding field ; with a modulating electrode near the cathode and at zero potential, the shape of the electrode surface will be a cone such as M, Fig. 3, and the first accelerator electrode has a surface shaped in the form of curves B which are asymptotic to the cone M. With a focusing lens the first electrode M, Fig. 4, may be cylindrical. Formulae are given for determining the shapes of the curves, and the selected potential increases from cathode to the screen so that the second differential coefficient of the potential with respect to distance along the axis is positive. If the cathode is of substantial size its emitting surface also follows the appropriate equipotential surface. The coned modulating electrode 21, Fig. 1, is carried by a sleeve 25 from an insulator 26 which also supports a cylinder 28 in which the curved electrode 22 is mounted ; this has a constricted orifice 24 formed by a metal insert. A cylinder 29, which with the curved electrode 34, forms a focusing lens, is carried by rods 32 from the stem 15. The curved electrode may be carried by a glass standard 54, Fig. 6, sealed to the main envelope. Pairs of deflecting plates 40, 41 are mounted above the electrode 34, a plate 36 acting as a screen to this electrode from the deflecting potentials. A shield 37 surrounding the plates 40 has stays 39 bearing on the envelope wall ; this may have a graphite coating. The stem 15 has an attached contact carrying cap 49 ; the leads 42, Fig. 6, to the deflecting plates may be taken to prongs 68 in a ring 67 on the tube. The cathode electrodes 21, 22, 29 insulating spacer 26 and coupling member 55 between the electrode 29 and cylinder 28 are carried as a unit from bands 31 on the stem 15. The deflector plates are carried by an insulating disc 71 seated on the shield 37. The electrodes 41 may be enclosed in a shield 78, Fig. 9, secured to the top of the shield 37 ; spring fingers 39 attached to brackets 82 on the shield 37 and bearing on the graphite coating may be used to apply a potential to the coating when it is used as an accelerator electrode. In a modification a separate pair of deflector plates may be used with the plates 40 the extra pair being coaxial but independently connected to terminals for applying potentials. In a modification using a ribbon shaped beam the cathode 93, Fig. 12, is mounted in the modulating electrode 94 ; the accelerator and focusing electrodes 95, 96 and the cathode have suitably formed surfaces 110, 111, 114, 99 to direct the beam on the fluorescent screen 117. The electrode 94 has two U-shaped parts 104 at its ends ; intermediately it has triangular cut away parts and in consequence it may be used to suppress emission from the ends of the cathode and thereby vary the length of the image on the screen. The electrodes 96 may be used as deflector plates.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US307231A US2245581A (en) | 1939-12-02 | 1939-12-02 | Electron discharge device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB545689A true GB545689A (en) | 1942-06-08 |
Family
ID=23188821
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16253/40A Expired GB545835A (en) | 1939-12-02 | 1940-11-08 | Improvements in the construction of electrodes for use in electron guns |
GB16256/40A Expired GB545689A (en) | 1939-12-02 | 1940-11-08 | Improvements relating to the construction and arrangement of electrodes in electron discharge devices |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16253/40A Expired GB545835A (en) | 1939-12-02 | 1940-11-08 | Improvements in the construction of electrodes for use in electron guns |
Country Status (6)
Country | Link |
---|---|
US (6) | US2268196A (en) |
BE (2) | BE444006A (en) |
DE (2) | DE862640C (en) |
FR (2) | FR881705A (en) |
GB (2) | GB545835A (en) |
NL (2) | NL68166C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE977183C (en) * | 1953-05-01 | 1965-05-20 | Telefunken Patent | Electrostatically strong bundling electron beam generation system |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733365A (en) * | 1956-01-31 | hoagland | ||
FR958882A (en) * | 1940-05-02 | 1950-03-21 | ||
BE480334A (en) * | 1942-03-14 | |||
NL83700C (en) * | 1942-03-24 | |||
US2445077A (en) * | 1942-06-25 | 1948-07-13 | Rca Corp | Electron discharge device utilizing cavity resonators |
NL71647C (en) * | 1943-06-30 | |||
US2452062A (en) * | 1943-07-29 | 1948-10-26 | Raytheon Mfg Co | Electrical discharge tube |
GB570672A (en) * | 1943-08-19 | 1945-07-17 | Gerhard Liebmann | Improvements in or relating to cathode ray tubes |
US2459792A (en) * | 1944-07-08 | 1949-01-25 | Standard Telephones Cables Ltd | Beam type electron discharge device |
BE469098A (en) * | 1946-05-09 | |||
US2592242A (en) * | 1946-07-02 | 1952-04-08 | Gen Electric | Electron gun and mounting therefor |
US2488132A (en) * | 1946-10-30 | 1949-11-15 | Du Mont Allen B Lab Inc | Deflection system for cathode-ray tubes |
US2529134A (en) * | 1947-10-02 | 1950-11-07 | Rauland Corp | Support for electron guns |
US2617076A (en) * | 1948-01-13 | 1952-11-04 | Motorola Inc | Electrostatic deflection system |
US2559037A (en) * | 1948-02-12 | 1951-07-03 | Zenith Radio Corp | Electron discharge device of the focussed-beam type |
US2538714A (en) * | 1948-04-14 | 1951-01-16 | Hartford Nat Bank & Trust Co | Electric discharge tube |
US2564743A (en) * | 1949-03-15 | 1951-08-21 | Sperry Corp | Charged particle beam forming apparatus |
US2570124A (en) * | 1949-10-20 | 1951-10-02 | Rca Corp | Positive ion beam gun |
US2606300A (en) * | 1950-01-19 | 1952-08-05 | Zenith Radio Corp | Electron discharge device |
FR1018955A (en) * | 1950-05-02 | 1953-01-15 | Philips Brasil | Microwave discharge tubes |
FR1023290A (en) * | 1950-08-12 | 1953-03-16 | Csf | Improvements to electron beam focusing devices |
US2656481A (en) * | 1950-12-13 | 1953-10-20 | Du Mont Allen B Lab Inc | Electron gun centering device for cathode-ray tubes |
US2672568A (en) * | 1951-03-27 | 1954-03-16 | Int Standard Electric Corp | Electron gun for cathode-ray tubes |
US2797353A (en) * | 1951-06-15 | 1957-06-25 | Bell Telephone Labor Inc | Traveling wave type electron discharge devices |
BE513449A (en) * | 1951-08-11 | |||
US2740913A (en) * | 1951-11-01 | 1956-04-03 | Itt | Electron gun |
US2741724A (en) * | 1951-11-27 | 1956-04-10 | Rauland Corp | Image-reproducing device |
US2740063A (en) * | 1952-02-27 | 1956-03-27 | Hartford Nat Bank & Trust Co | Miniature electronic discharge tube with ribbon-shaped beam |
US2735032A (en) * | 1952-10-09 | 1956-02-14 | bradley | |
DE1005200B (en) * | 1953-03-09 | 1957-03-28 | Loewe Opta Ag | Electrode pre-system for electron beam tubes, especially television picture tubes |
NL187314B (en) * | 1953-05-15 | Toyama Chemical Co Ltd | ANTIBACTERIAL PREPARATION, AS WELL AS A SUBSTITUTED IN SITE 1 7- (3-AMINOPYRROLIDINO) -6-FLUOR-4-OXO-1,4-DIHYDRO-1,8-NAPHTYRIDINE-3-CARBONIC ACID DERIVATE. | |
US2728007A (en) * | 1953-07-01 | 1955-12-20 | Rca Corp | Cathode ray tube gun structure |
US2782333A (en) * | 1954-08-18 | 1957-02-19 | Rca Corp | Shortened triple gun for color television |
US2811667A (en) * | 1954-12-09 | 1957-10-29 | Hughes Aircraft Co | Electron gun |
US2888605A (en) * | 1955-02-23 | 1959-05-26 | Hughes Aircraft Co | Electron gun |
US2817033A (en) * | 1955-04-08 | 1957-12-17 | Hughes Aircraft Co | Electron gun |
US2839703A (en) * | 1956-01-03 | 1958-06-17 | Columbia Broadcasting Syst Inc | High resolution image cathode ray tube system |
US2967260A (en) * | 1957-05-31 | 1961-01-03 | Eitel Mccullough Inc | Electron tube |
US2996640A (en) * | 1958-11-20 | 1961-08-15 | Rca Corp | Variable beam electron gun |
DE1498845A1 (en) * | 1962-01-31 | 1969-05-14 | Leybold Heraeus Gmbh & Co Kg | Ionization device for mass spectrometers that can be used in large total pressure ranges |
US3227906A (en) * | 1962-05-02 | 1966-01-04 | Eitel Mccullough Inc | Cathode support and heat shielding structure for electron gun |
FR1413184A (en) * | 1964-08-26 | 1965-10-08 | Csf | Electronic cannons generating non-uniform density beams |
US3980919A (en) * | 1974-12-20 | 1976-09-14 | Watkins-Johnson Company | Rectangular beam laminar flow electron gun |
DE2603341C2 (en) * | 1976-01-29 | 1984-03-15 | Siemens AG, 1000 Berlin und 8000 München | Rotationally symmetrical electron gun and use for high-performance traveling field tubes |
JPS57124830A (en) * | 1981-01-27 | 1982-08-03 | Sony Corp | Sealing method for cathode-ray tube |
-
0
- DE DENDAT883938D patent/DE883938C/en not_active Expired
- BE BE444002D patent/BE444002A/xx unknown
- BE BE444006D patent/BE444006A/xx unknown
- NL NL72884D patent/NL72884C/xx active
- NL NL68166D patent/NL68166C/xx active
-
1939
- 1939-12-02 US US307233A patent/US2268196A/en not_active Expired - Lifetime
- 1939-12-02 US US307255A patent/US2268195A/en not_active Expired - Lifetime
- 1939-12-02 US US307232A patent/US2268194A/en not_active Expired - Lifetime
- 1939-12-02 US US307231A patent/US2245581A/en not_active Expired - Lifetime
-
1940
- 1940-02-17 US US319393A patent/US2268197A/en not_active Expired - Lifetime
- 1940-04-04 US US327826A patent/US2268165A/en not_active Expired - Lifetime
- 1940-11-08 GB GB16253/40A patent/GB545835A/en not_active Expired
- 1940-11-08 GB GB16256/40A patent/GB545689A/en not_active Expired
- 1940-12-02 DE DEW905D patent/DE862640C/en not_active Expired
-
1941
- 1941-05-21 FR FR881705D patent/FR881705A/en not_active Expired
- 1941-05-23 FR FR52414D patent/FR52414E/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE977183C (en) * | 1953-05-01 | 1965-05-20 | Telefunken Patent | Electrostatically strong bundling electron beam generation system |
Also Published As
Publication number | Publication date |
---|---|
US2268194A (en) | 1941-12-30 |
FR881705A (en) | 1943-05-06 |
BE444006A (en) | |
US2245581A (en) | 1941-06-17 |
US2268196A (en) | 1941-12-30 |
DE862640C (en) | 1953-01-12 |
NL72884C (en) | |
BE444002A (en) | |
NL68166C (en) | |
US2268197A (en) | 1941-12-30 |
GB545835A (en) | 1942-06-16 |
US2268195A (en) | 1941-12-30 |
FR52414E (en) | 1944-04-13 |
US2268165A (en) | 1941-12-30 |
DE883938C (en) | 1953-06-11 |
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