GB497645A - Improvements in or relating to electron lenses - Google Patents

Improvements in or relating to electron lenses

Info

Publication number
GB497645A
GB497645A GB14013/37A GB1401337A GB497645A GB 497645 A GB497645 A GB 497645A GB 14013/37 A GB14013/37 A GB 14013/37A GB 1401337 A GB1401337 A GB 1401337A GB 497645 A GB497645 A GB 497645A
Authority
GB
United Kingdom
Prior art keywords
cathode
relating
electron lenses
electromagnet
electron
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
GB14013/37A
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 GB14013/37A priority Critical patent/GB497645A/en
Priority to US207470A priority patent/US2203734A/en
Publication of GB497645A publication Critical patent/GB497645A/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
    • H01J29/64—Magnetic lenses
    • H01J29/66—Magnetic lenses using electromagnetic means only
    • 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
    • H01J31/30—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 anode potential, e.g. iconoscope
    • H01J31/32—Tubes with image amplification section, e.g. image-iconoscope, supericonoscope

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

497,645. Cathode-ray tubes. LUBSZYNSKI, H. G. May 20, 1937, No. 14013. [Class 39 (i)] An electron image from a photo cathode P is focused on to a mosaic electrode M by a frusto-conical electromagnet 4, which reduces the composite beam from the cathode P before it enters the field of a second focusing system ; this may be an electromagnet 5 or electrostatic means. The mosaic may be scanned by a beam from a gun G. The focusing means may be used in an electron telescope or microscope. Specification 442,666 is referred to.
GB14013/37A 1937-05-20 1937-05-20 Improvements in or relating to electron lenses Expired GB497645A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB14013/37A GB497645A (en) 1937-05-20 1937-05-20 Improvements in or relating to electron lenses
US207470A US2203734A (en) 1937-05-20 1938-05-12 Electron lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14013/37A GB497645A (en) 1937-05-20 1937-05-20 Improvements in or relating to electron lenses

Publications (1)

Publication Number Publication Date
GB497645A true GB497645A (en) 1938-12-20

Family

ID=10033410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14013/37A Expired GB497645A (en) 1937-05-20 1937-05-20 Improvements in or relating to electron lenses

Country Status (2)

Country Link
US (1) US2203734A (en)
GB (1) GB497645A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664813A (en) * 1947-08-29 1952-01-16 Emi Ltd Improvements relating to apparatus embodying electron discharge tubes
NL153891B (en) * 1949-06-11 Stamicarbon PROCESS FOR THE PREPARATION OF AMORPHIC COPOLYMERS OF ETHENE.
US2803770A (en) * 1950-09-18 1957-08-20 Fernseh Gmbh Electron discharge tube apparatus
NL89166C (en) * 1950-11-06
GB822166A (en) * 1954-09-20 1959-10-21 Julius Cato Vredenburg Inglesb Cathode ray image producing system and apparatus
US2887594A (en) * 1955-04-29 1959-05-19 Rca Corp Electron discharge device
US2844759A (en) * 1955-07-18 1958-07-22 Philco Corp Apparatus and method for overcoming scanning error effects in plural beam cathode ray tubes
US2950405A (en) * 1958-02-18 1960-08-23 Optische Ind De Oude Delft Nv Electron-optical device

Also Published As

Publication number Publication date
US2203734A (en) 1940-06-11

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