GB556046A - Improvements relating to electron guns such as are used in cathode ray tubes - Google Patents

Improvements relating to electron guns such as are used in cathode ray tubes

Info

Publication number
GB556046A
GB556046A GB3389/42A GB338942A GB556046A GB 556046 A GB556046 A GB 556046A GB 3389/42 A GB3389/42 A GB 3389/42A GB 338942 A GB338942 A GB 338942A GB 556046 A GB556046 A GB 556046A
Authority
GB
United Kingdom
Prior art keywords
electrode
anode
electrodes
ray tubes
cathode ray
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
Application number
GB3389/42A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AC Cossor Ltd
Original Assignee
AC Cossor Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to BE480334D priority Critical patent/BE480334A/xx
Application filed by AC Cossor Ltd filed Critical AC Cossor Ltd
Priority to GB3389/42A priority patent/GB556046A/en
Publication of GB556046A publication Critical patent/GB556046A/en
Priority to US4366A priority patent/US2484721A/en
Expired legal-status Critical Current

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
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
    • 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

Abstract

556,046. Cathode ray tubes. COSSOR. Ltd.. A. C. March 14, 1942, No. 3389. [Class 39 (i)] An electron gun has the control electrode 2 and the first anode 3 in the form of apertured discs with dished parts convex to the cathode, the apertured cup 31 of the anode entering the cup 21 of the control electrode. The crossover formed by these electrodes with the cathode is focused on a fluorescent screen by a further lens consisting of the electrodes 4 and 5 at the same potential as the anode 3 and an intervening electrode 6 at a much lower positive potential. An apertured disc electrode directly connected to the electrode 4 and between this electrode and the anode 3 may be used to mask down the beam to prevent it impinging on the electrode 6. Sizes of the electrodes 2, 3 and spacings are given for one example.
GB3389/42A 1942-03-14 1942-03-14 Improvements relating to electron guns such as are used in cathode ray tubes Expired GB556046A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE480334D BE480334A (en) 1942-03-14
GB3389/42A GB556046A (en) 1942-03-14 1942-03-14 Improvements relating to electron guns such as are used in cathode ray tubes
US4366A US2484721A (en) 1942-03-14 1948-01-26 Electrode gun such as is used in cathode-ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3389/42A GB556046A (en) 1942-03-14 1942-03-14 Improvements relating to electron guns such as are used in cathode ray tubes

Publications (1)

Publication Number Publication Date
GB556046A true GB556046A (en) 1943-09-17

Family

ID=9757405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3389/42A Expired GB556046A (en) 1942-03-14 1942-03-14 Improvements relating to electron guns such as are used in cathode ray tubes

Country Status (3)

Country Link
US (1) US2484721A (en)
BE (1) BE480334A (en)
GB (1) GB556046A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472766A (en) * 1944-12-28 1949-06-07 Cossor Ltd A C Cathode-ray tube
DE1073638B (en) * 1953-02-19 1960-01-21 Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen Beam generation system for cathode ray tubes with ion trap

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540621A (en) * 1948-02-19 1951-02-06 Rca Corp Electron gun structure
GB648118A (en) * 1948-11-25 1950-12-28 Frederick Henry Townsend Improvements in or relating to cathode ray tubes with magnetic deflection
GB704878A (en) * 1948-11-26 1954-03-03 Siemens Ag Improvements in or relating to cathode ray oscillographs
US2540537A (en) * 1948-12-18 1951-02-06 Rca Corp Vacuum tube current amplifier
US2575835A (en) * 1950-05-09 1951-11-20 Du Mont Allen B Lab Inc Cathode-ray tube centering device
US2673305A (en) * 1951-05-31 1954-03-23 Rauland Corp Image-reproducing device
US2792515A (en) * 1951-06-22 1957-05-14 Thomas Electrics Inc Cathode ray tube
US2719243A (en) * 1951-07-03 1955-09-27 Du Mont Allen B Lab Inc Electrostatic electron lens
BE530971A (en) * 1953-08-14
GB759944A (en) * 1954-03-02 1956-10-24 Gen Electric Co Ltd Improvements in or relating to electric circuit arrangements incorporating cathode ray tubes
US2935636A (en) * 1955-10-31 1960-05-03 Rca Corp Electron gun structure
US2839703A (en) * 1956-01-03 1958-06-17 Columbia Broadcasting Syst Inc High resolution image cathode ray tube system
US2939980A (en) * 1956-01-30 1960-06-07 Sylvania Electric Prod Image reproduction device structure
US3394279A (en) * 1967-03-23 1968-07-23 Kentucky Electronics Inc Support and electrical connection for grid cup in electron gun
US3628077A (en) * 1970-02-26 1971-12-14 Sylvania Electric Prod Electron gun having concave coined grid and annular rib
NL8204185A (en) * 1982-10-29 1984-05-16 Philips Nv CATHED BEAM TUBE.
JP2003022761A (en) * 2001-07-06 2003-01-24 Matsushita Electric Ind Co Ltd Electron gun, cathode-ray tube using it, and manufacturing method of electron gun

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2111231A (en) * 1934-06-27 1938-03-15 Radio Patents Corp Recording device
US2223040A (en) * 1937-06-30 1940-11-26 Gen Electric Electron discharge device
US2227034A (en) * 1937-08-30 1940-12-31 Loewe Radio Inc Cathode ray tube
DE883938C (en) * 1939-12-02 1953-06-11 Western Electric Co Electron discharge device
BE440730A (en) * 1940-03-29
US2355795A (en) * 1942-08-17 1944-08-15 Bell Telephone Labor Inc Electrode system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472766A (en) * 1944-12-28 1949-06-07 Cossor Ltd A C Cathode-ray tube
DE1073638B (en) * 1953-02-19 1960-01-21 Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen Beam generation system for cathode ray tubes with ion trap

Also Published As

Publication number Publication date
BE480334A (en)
US2484721A (en) 1949-10-11

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