GB469455A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB469455A
GB469455A GB2354/36A GB235436A GB469455A GB 469455 A GB469455 A GB 469455A GB 2354/36 A GB2354/36 A GB 2354/36A GB 235436 A GB235436 A GB 235436A GB 469455 A GB469455 A GB 469455A
Authority
GB
United Kingdom
Prior art keywords
screen
axis
deflections
cathode
envelope
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
GB2354/36A
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.)
Marconis Wireless Telegraph Co Ltd
Original Assignee
Marconis Wireless Telegraph Co 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
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB469455A publication Critical patent/GB469455A/en
Expired legal-status Critical Current

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
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems

Abstract

469,455. Cathode ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BRETT, G. F. Jan. 24, 1936, No. 2354. [Class 39 (i)] Cathode-ray tubes for low voltages such as 150-350 volts and with a short length of cathode-ray such as 4 inches are provided with a simple cylindrical envelope E enclosing an indicating screen S which is transverse to and offset from the axis of the electron gun G. The screen is preferably parallel to this axis and to the axis of the envelope E, and can be viewed directly through the side of the envelope or through a lens L with its axis perpendicular to the screen. The screen S is a metal plate coated with fluorescent material and the ray is given a steady deflection towards the screen in addition to the usual deflections at right angles to trace a picture on the screen. The steady deflection may be magnetic and the usual deflections electrostatic, or all deflections may be produced by mutually perpendicular pairs of coils. The gun G may be as described in Specification 469,418. The deflecting wave forms may be modified to avoid trapezium-distortion due to the position of the screen S.
GB2354/36A 1934-10-30 1936-01-24 Improvements in or relating to cathode ray tubes Expired GB469455A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE469755X 1934-10-30
GB2211844X 1936-02-24

Publications (1)

Publication Number Publication Date
GB469455A true GB469455A (en) 1937-07-26

Family

ID=32070597

Family Applications (2)

Application Number Title Priority Date Filing Date
GB29934/35A Expired GB469755A (en) 1934-10-30 1935-10-30 Improvements in and relating to electric, astatic regulating arrangements
GB2354/36A Expired GB469455A (en) 1934-10-30 1936-01-24 Improvements in or relating to cathode ray tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB29934/35A Expired GB469755A (en) 1934-10-30 1935-10-30 Improvements in and relating to electric, astatic regulating arrangements

Country Status (2)

Country Link
US (1) US2211844A (en)
GB (2) GB469755A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001029869A1 (en) * 1999-10-21 2001-04-26 Sarnoff Corporation Space-saving cathode ray tube employing magnetically amplified deflection
WO2001029868A1 (en) * 1999-10-21 2001-04-26 Sarnoff Corporation Asymmetric space-saving cathode ray tube with magnetically deflected electron beam
US6674230B1 (en) 1999-04-30 2004-01-06 Sarnoff Corporation Asymmetric space-saving cathode ray tube with magnetically deflected electron beam

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL81844C (en) * 1940-07-23
US2449558A (en) * 1945-12-14 1948-09-21 Harold H Lanier Cathode-ray tube
US2795731A (en) * 1953-05-19 1957-06-11 Kaiser Aircraft & Electronics Cathode ray tube
US2864970A (en) * 1955-07-11 1958-12-16 Kaiser Ind Corp Electronic device
US2880365A (en) * 1955-08-29 1959-03-31 Rca Corp Simplified scanning means for flat type kinescope
US2870361A (en) * 1955-10-27 1959-01-20 Kaiser Ind Corp Electronic device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6586870B1 (en) 1999-04-30 2003-07-01 Sarnoff Corporation Space-saving cathode ray tube employing magnetically amplified deflection
US6674230B1 (en) 1999-04-30 2004-01-06 Sarnoff Corporation Asymmetric space-saving cathode ray tube with magnetically deflected electron beam
WO2001029869A1 (en) * 1999-10-21 2001-04-26 Sarnoff Corporation Space-saving cathode ray tube employing magnetically amplified deflection
WO2001029868A1 (en) * 1999-10-21 2001-04-26 Sarnoff Corporation Asymmetric space-saving cathode ray tube with magnetically deflected electron beam

Also Published As

Publication number Publication date
GB469755A (en) 1937-07-26
US2211844A (en) 1940-08-20

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