GB731180A - Improvements in or relating to cathode ray tube apparatus - Google Patents

Improvements in or relating to cathode ray tube apparatus

Info

Publication number
GB731180A
GB731180A GB2932352A GB2932352A GB731180A GB 731180 A GB731180 A GB 731180A GB 2932352 A GB2932352 A GB 2932352A GB 2932352 A GB2932352 A GB 2932352A GB 731180 A GB731180 A GB 731180A
Authority
GB
United Kingdom
Prior art keywords
tube
coils
neck
cathode
ray tube
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
GB2932352A
Inventor
Anthony Victor De Vere Krause
Peter Andrew Reay Kinghorn
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.)
Cinema Television Ltd
Original Assignee
Cinema Television 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 Cinema Television Ltd filed Critical Cinema Television Ltd
Priority to GB2932352A priority Critical patent/GB731180A/en
Priority to FR1086226D priority patent/FR1086226A/en
Publication of GB731180A publication Critical patent/GB731180A/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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses

Abstract

731,180. Cathode-ray tubes. CINEMATELEVISION, Ltd. Nov. 19, 1953 [Nov. 20, 1952], No. 29323/52. Drawings to Specification. Class 39 (1). In a cathode-ray tube astigmatism of the image produced by the electromagnetic focusing and deflecting coils is corrected by the adjustment of the currents flowing through a plurality of electromagnetic coils disposed around the neck of the tube with their axes parallel to the central longitudinal axis of the neck. The coils may be disposed around the outer cylindrical surface of the focusing coil, or around the neck between the electron gun and the focusing coil. Four coils uniformly distributed around the neck of the tube may be provided, with diametrically opposed coils connected in series. The cathode-ray tube may be a receiver tube, storage or transmitting tube such as an image iconoscope or a monoscope.
GB2932352A 1952-11-20 1952-11-20 Improvements in or relating to cathode ray tube apparatus Expired GB731180A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2932352A GB731180A (en) 1952-11-20 1952-11-20 Improvements in or relating to cathode ray tube apparatus
FR1086226D FR1086226A (en) 1952-11-20 1953-11-04 Improvements to cathode-ray tube devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2932352A GB731180A (en) 1952-11-20 1952-11-20 Improvements in or relating to cathode ray tube apparatus

Publications (1)

Publication Number Publication Date
GB731180A true GB731180A (en) 1955-06-01

Family

ID=10289739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2932352A Expired GB731180A (en) 1952-11-20 1952-11-20 Improvements in or relating to cathode ray tube apparatus

Country Status (2)

Country Link
FR (1) FR1086226A (en)
GB (1) GB731180A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8601511A (en) * 1986-06-11 1988-01-04 Philips Nv CATHODE BEAM WITH MAGNETIC FOCUSING LENS.
NL8601512A (en) * 1986-06-11 1988-01-04 Philips Nv CATHODE BEAM WITH MAGNETIC FOCUSING LENS.

Also Published As

Publication number Publication date
FR1086226A (en) 1955-02-10

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