GB452012A - Improvements in and relating to cathode ray tubes - Google Patents

Improvements in and relating to cathode ray tubes

Info

Publication number
GB452012A
GB452012A GB467235A GB467235A GB452012A GB 452012 A GB452012 A GB 452012A GB 467235 A GB467235 A GB 467235A GB 467235 A GB467235 A GB 467235A GB 452012 A GB452012 A GB 452012A
Authority
GB
United Kingdom
Prior art keywords
electrode
ray
cathode
relating
potential
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
GB467235A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2023736A priority Critical patent/GB452125A/en
Priority to GB467235A priority patent/GB452012A/en
Priority to FR802715D priority patent/FR802715A/en
Publication of GB452012A publication Critical patent/GB452012A/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
    • H01J29/58—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

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

452,012. Cathode-ray oscillographs. NICOLL, F. H., 17, The Drive, Ickenham, near Uxbridge, Middlesex. Feb. 13, 1935, No. 4672. [Class 37] [See also Group XL] In a cathode-ray tube having in succession along the path of the ray a cathode 4, electrodes 8, 9 positive relatively to the cathode for accelerating and directing the electrons, means for deflecting the ray and a screen 11, two values of deflection sensitivity are provided by means of a switch 27 so arranged that in one setting thereof the ratio of the potential of the electrode 9 nearest the screen 11 to the potential of the adjacent electrode 8 is the inverse of the ratio in the other setting. As shown, a rectifier 14 and potentiometer 12, 13 maintains the electrode 8 at 400 volts positive and the 2-pole switch 27 enables the electrode 9 to be maintained at either 200 or 800 volts, good focusing of the ray being secured in both cases. The electrode 9 may be a silvering on the wall of the tube.
GB467235A 1935-02-13 1935-02-13 Improvements in and relating to cathode ray tubes Expired GB452012A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2023736A GB452125A (en) 1935-02-13 1935-02-13 Improvements in and relating to cathode ray tubes
GB467235A GB452012A (en) 1935-02-13 1935-02-13 Improvements in and relating to cathode ray tubes
FR802715D FR802715A (en) 1935-02-13 1936-02-13 Improvements to cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB467235A GB452012A (en) 1935-02-13 1935-02-13 Improvements in and relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
GB452012A true GB452012A (en) 1936-08-13

Family

ID=9781598

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2023736A Expired GB452125A (en) 1935-02-13 1935-02-13 Improvements in and relating to cathode ray tubes
GB467235A Expired GB452012A (en) 1935-02-13 1935-02-13 Improvements in and relating to cathode ray tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2023736A Expired GB452125A (en) 1935-02-13 1935-02-13 Improvements in and relating to cathode ray tubes

Country Status (2)

Country Link
FR (1) FR802715A (en)
GB (2) GB452125A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185590A (en) * 1937-06-18 1940-01-02 Rca Corp Cathode ray tube
US3205391A (en) * 1957-11-18 1965-09-07 Multi Tron Lab Inc Negative-lens type deflection magnifying means for electron beam in cathode ray tubes
US3154710A (en) * 1958-11-13 1964-10-27 Motorola Inc Cathode-ray display system having electrostatic magnifying lens
NL250540A (en) * 1959-04-16

Also Published As

Publication number Publication date
FR802715A (en) 1936-09-14
GB452125A (en) 1936-08-13

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