GB1478059A - Inline electron gun having a convergence assembly - Google Patents

Inline electron gun having a convergence assembly

Info

Publication number
GB1478059A
GB1478059A GB3158674A GB3158674A GB1478059A GB 1478059 A GB1478059 A GB 1478059A GB 3158674 A GB3158674 A GB 3158674A GB 3158674 A GB3158674 A GB 3158674A GB 1478059 A GB1478059 A GB 1478059A
Authority
GB
United Kingdom
Prior art keywords
guns
plates
gun
deflection
disc
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
GB3158674A
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.)
RCA Corp
Original Assignee
RCA Corp
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
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1478059A publication Critical patent/GB1478059A/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
    • H01J29/70—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
    • H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices

Abstract

1478059 Electron guns R C A CORPORATION 17 July 1974 [8 Aug 1973] 31586/74 Heading H1D An in line electron gun for a C.R.T. (e.g. at least two, preferably three, guns, and shadow mask type) comprises edge to edge pole piece plates 20-23 of a convergence assembly for enhancing a magnetic field deflecting beams out of the plane of the guns and plates 14-19 for enhancing deflection in the plane of the guns. The plates 14-23 may be connected to non- magnetic circular disc 30 held by clips 34 to slightly larger disc 32. Non-magnetic tubular extensions 44, 46 protrude from electrodes 36 of the outer beams 24, 28 to provide alignment for disc 30 and plates 14-23. Individual electrodes of the guns, as in Fig. 2 (not shown) are mounted along six insulator e.g. glass support rods (58), by straps (62, 64) and tab (60). Spring spacers (66) locate the gun in the neck, and straps (70) support the heater filaments. An external driver convergence assembly (Fig. 3, not shown) comprises two ferrite cores (74, 76) with coil assemblies (82, 84, 86 and 88, 90, 92) and air coils (78, 80), the latter providing horizontal convergence deflection of central beam (26) and compensating for interaction of adjacent fields. Vertical deflection of beam 26 may be by connection of the two pairs of outer coils on the E cores, and may allow for gun misalignment correction.
GB3158674A 1973-08-08 1974-07-17 Inline electron gun having a convergence assembly Expired GB1478059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US386639A US3866080A (en) 1973-08-08 1973-08-08 Inline electron gun having magnetically permeable plates for enhancing convergence of electron beams

Publications (1)

Publication Number Publication Date
GB1478059A true GB1478059A (en) 1977-06-29

Family

ID=23526430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3158674A Expired GB1478059A (en) 1973-08-08 1974-07-17 Inline electron gun having a convergence assembly

Country Status (8)

Country Link
US (1) US3866080A (en)
JP (1) JPS5046264A (en)
CA (1) CA1012598A (en)
DE (1) DE2438254C3 (en)
FR (1) FR2240522B1 (en)
GB (1) GB1478059A (en)
IT (1) IT1016765B (en)
NL (1) NL7410331A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5615102B2 (en) * 1974-10-14 1981-04-08
US4086513A (en) * 1975-03-03 1978-04-25 Rca Corporation Plural gun cathode ray tube having parallel plates adjacent grid apertures
DE2722477A1 (en) * 1977-05-18 1978-11-23 Standard Elektrik Lorenz Ag COLOR TELEVISION SCREENS
NL7802129A (en) * 1978-02-27 1979-08-29 Philips Nv DEVICE FOR DISPLAYING COLORED IMAGES.
US4396862A (en) * 1978-05-01 1983-08-02 Rca Corporation Color picture tube with means for affecting magnetic deflection fields in electron gun area
US4370593A (en) * 1980-12-30 1983-01-25 Rca Corporation In-line electron gun and method for modifying the same
JPS5840749A (en) * 1981-09-02 1983-03-09 Toshiba Corp Magnetic focussing type cathode-ray tube
US4495439A (en) * 1981-09-02 1985-01-22 Tokyo Shibaura Denki Kabushiki Kaisha Magnetic focusing type cathode ray tube
EP0090107B1 (en) * 1982-03-31 1986-06-18 International Business Machines Corporation Convergence unit for in-line colour cathode ray tube
DE3212248A1 (en) * 1982-04-02 1983-10-06 Standard Elektrik Lorenz Ag ELECTRON OPTICS OF THE ELECTRONIC RADIATOR GENERATOR SYSTEM OF A COLOR IMAGE TUBE
JPS59214139A (en) * 1983-05-18 1984-12-04 Matsushita Electronics Corp Color picture tube device
NL8401444A (en) * 1984-05-07 1985-12-02 Philips Nv PICTURE TUBE.
NL8402303A (en) * 1984-07-20 1986-02-17 Philips Nv COLOR IMAGE TUBE.
JP2661024B2 (en) * 1986-12-27 1997-10-08 ソニー株式会社 Cathode ray tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939979A (en) * 1957-04-26 1960-06-07 Sol L Reiches Color pure cathode ray tube display mechanism
FR1392502A (en) * 1963-10-30 1965-03-19 Cft Comp Fse Television Operation with color television receiver tubes

Also Published As

Publication number Publication date
IT1016765B (en) 1977-06-20
DE2438254B2 (en) 1978-11-16
DE2438254A1 (en) 1975-02-27
DE2438254C3 (en) 1979-07-19
FR2240522A1 (en) 1975-03-07
CA1012598A (en) 1977-06-21
FR2240522B1 (en) 1978-04-28
NL7410331A (en) 1975-02-11
JPS5046264A (en) 1975-04-24
US3866080A (en) 1975-02-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee