GB1448015A – Cathode ray tubes
– Google Patents
GB1448015A – Cathode ray tubes
– Google Patents
Cathode ray tubes
Info
Publication number
GB1448015A
GB1448015A
GB4382473A
GB4382473A
GB1448015A
GB 1448015 A
GB1448015 A
GB 1448015A
GB 4382473 A
GB4382473 A
GB 4382473A
GB 4382473 A
GB4382473 A
GB 4382473A
GB 1448015 A
GB1448015 A
GB 1448015A
Authority
GB
United Kingdom
Prior art keywords
gun
axis
principal axis
cathode
magnetic
Prior art date
1972-09-18
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
GB4382473A
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.)
1972-09-18
Filing date
1973-09-18
Publication date
1976-09-02
1973-09-18
Application filed by RCA Corp
filed
Critical
RCA Corp
1976-09-02
Publication of GB1448015A
publication
Critical
patent/GB1448015A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H01J31/38—Tubes with photoconductive screen, e.g. vidicon
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
H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
Abstract
1448015 Cathode-ray tubes RCA CORPORATION 18 Sept 1973 [18 Sept 1972] 43824/73 Heading H1D In a cathode-ray tube having a magnetic focussing field which defines a principal axis, and an electron gun having a cathode and a plurality of electrodes defining a gun axis, the gun is spaced from the principal axis and is disposed so that the gun axis is both tilted and twisted with respect to the principal axis; by suitable choice of the tilt and skew angles of the gun axis with respect to the principal axis, compensation for the effect of the radial variation of the magnetic focusing field may be effected, to permit normal incidence of a scanned beam from the gun on a target disposed perpendicular to the principal axis. The Specification refers to tilt angles in the range 2 to 6 degrees and skew angles in the range 1 to 4 degrees, and to tubes incorporating a plurality of such off-axis obliquely directed guns, or such a gun together with an on-axis gun. A two-gun vidicon colour pick-up tube is described, Figs. 1 and 2, having two such guns 32a and 32b, a focusing solenoid and magnetic scan system 58, and a two-part target formed by a pair of semi-circular tin oxide signal electrode layers 24, Fig. 2, spaced from one another by 0À65 mm., both layers and the intervening space being coated with antimony trisulphide photoconductor. Each gun scans the photoconduotor above a respective one of the signal electrodes, the signals from which are taken off via a corresponding pair of aluminium contact layers 20 connected to conductive glass frit buttons 22 sealed through the faceplate. The annular focusing electrode 48 acts also as a getter fixture.
GB4382473A
1972-09-18
1973-09-18
Cathode ray tubes
Expired
GB1448015A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US28978072A
1972-09-18
1972-09-18
Publications (1)
Publication Number
Publication Date
GB1448015A
true
GB1448015A
(en)
1976-09-02
Family
ID=23113062
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4382473A
Expired
GB1448015A
(en)
1972-09-18
1973-09-18
Cathode ray tubes
Country Status (10)
Country
Link
US
(1)
US3783326A
(en)
JP
(1)
JPS528214B2
(en)
CA
(1)
CA979473A
(en)
DD
(1)
DD105936A5
(en)
DE
(1)
DE2347264A1
(en)
FR
(1)
FR2200615B1
(en)
GB
(1)
GB1448015A
(en)
IT
(1)
IT990885B
(en)
NL
(1)
NL7312773A
(en)
SE
(1)
SE381130B
(en)
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS55155452A
(en)
*
1979-05-23
1980-12-03
Hitachi Ltd
Camera tube target
NL8006123A
(en)
*
1980-11-10
1982-06-01
Philips Nv
CATHED BEAM TUBE.
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2563500A
(en)
*
1951-08-07
Plural beam tube
US2734147A
(en)
*
1956-02-07
beckers
JPS4819097B1
(en)
*
1969-07-23
1973-06-11
1972
1972-09-18
US
US00289780A
patent/US3783326A/en
not_active
Expired – Lifetime
1973
1973-07-03
IT
IT26133/73A
patent/IT990885B/en
active
1973-08-15
CA
CA178,852A
patent/CA979473A/en
not_active
Expired
1973-08-31
SE
SE7311894A
patent/SE381130B/en
unknown
1973-09-17
DD
DD173518A
patent/DD105936A5/xx
unknown
1973-09-17
NL
NL7312773A
patent/NL7312773A/xx
unknown
1973-09-17
FR
FR7333241A
patent/FR2200615B1/fr
not_active
Expired
1973-09-17
JP
JP48104857A
patent/JPS528214B2/ja
not_active
Expired
1973-09-18
DE
DE19732347264
patent/DE2347264A1/en
active
Pending
1973-09-18
GB
GB4382473A
patent/GB1448015A/en
not_active
Expired
Also Published As
Publication number
Publication date
JPS528214B2
(en)
1977-03-08
NL7312773A
(en)
1974-03-20
FR2200615A1
(en)
1974-04-19
DD105936A5
(en)
1974-05-12
AU6035973A
(en)
1975-03-20
JPS4970530A
(en)
1974-07-08
US3783326A
(en)
1974-01-01
SE381130B
(en)
1975-11-24
DE2347264A1
(en)
1974-03-28
FR2200615B1
(en)
1976-06-18
IT990885B
(en)
1975-07-10
CA979473A
(en)
1975-12-09
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Legal Events
Date
Code
Title
Description
1977-01-13
PS
Patent sealed [section 19, patents act 1949]
1978-04-26
PLNP
Patent lapsed through nonpayment of renewal fees
