GB489428A - Improvements in or relating to electron mirrors - Google Patents

Improvements in or relating to electron mirrors

Info

Publication number
GB489428A
GB489428A GB35357/36A GB3535736A GB489428A GB 489428 A GB489428 A GB 489428A GB 35357/36 A GB35357/36 A GB 35357/36A GB 3535736 A GB3535736 A GB 3535736A GB 489428 A GB489428 A GB 489428A
Authority
GB
United Kingdom
Prior art keywords
screen
electrode
mirror
photo
plate
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
GB35357/36A
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.)
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 GB35357/36A priority Critical patent/GB489428A/en
Priority to US181289A priority patent/US2264709A/en
Priority to FR831215D priority patent/FR831215A/en
Publication of GB489428A publication Critical patent/GB489428A/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
    • H01J29/60—Mirrors

Abstract

489,428. Electron mirrors. NICOLL, F. H. Dec. 24, 1936, No. 35357. [Class 39 (i)] A mirror comprises a positively biassed tubular, preferably cylindrical, electrode and, more remote from the source, an electrode so biassed that a zero equipotential surface is formed in the neighbourhood of the end of the tubular electrode. The second electrode may be a cylinder, or may be a plate constituting the equipotential surface ; the shape of the plate may be determined experimentally. In an image converter, as shown, the mirror comprises cylinders 6, 7 whereby the image produced at a photo-electric screen 4 is reproduced on a fluorescent screen 8. A magnetic focusing coil 9 may be provided. In an iconoscope, the screen 8 is a mosaic with a signal plate and a screen screening it from the photo-cathode 4. It may be scanned obliquely or axially. In the latter case the mirror 6, 7 constitutes the focusing lens for the scanning beam. In a measuring tube or electron microscope, the beam passes through an aperture in the fluorescent screen and is reflected by the mirror upon the screen. The dimensions and potentials of the electrodes are chosen experimentally to remove aberration and to correct for pin-cushion or barrel distortion.
GB35357/36A 1936-12-24 1936-12-24 Improvements in or relating to electron mirrors Expired GB489428A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB35357/36A GB489428A (en) 1936-12-24 1936-12-24 Improvements in or relating to electron mirrors
US181289A US2264709A (en) 1936-12-24 1937-12-23 Electron mirror
FR831215D FR831215A (en) 1936-12-24 1937-12-23 Improvements to electronic mirrors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35357/36A GB489428A (en) 1936-12-24 1936-12-24 Improvements in or relating to electron mirrors

Publications (1)

Publication Number Publication Date
GB489428A true GB489428A (en) 1938-07-25

Family

ID=10376835

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35357/36A Expired GB489428A (en) 1936-12-24 1936-12-24 Improvements in or relating to electron mirrors

Country Status (3)

Country Link
US (1) US2264709A (en)
FR (1) FR831215A (en)
GB (1) GB489428A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757913C (en) * 1939-03-17 1953-06-01 Aeg Braun tube with baffles
FR959703A (en) * 1941-07-08 1950-04-04
US2444710A (en) * 1942-09-26 1948-07-06 Rca Corp Correction for spherical and chromatic aberrations in electron lens
US2572494A (en) * 1946-06-28 1951-10-23 Rca Corp Velocity selection in electron tubes
CH265327A (en) * 1946-10-14 1949-11-30 Csf Electron microscope comprising a projection mirror.
BE481554A (en) * 1947-06-26
NL150232B (en) * 1948-12-10 Hoffmann La Roche METHOD OF DETERMINING THE (ALPHA) AMYLASE ACTIVITY OF A MATERIAL OF HUMAN OR ANIMAL ORIGIN, AND REAGENTIA FOR THIS.
NL157249B (en) * 1949-12-17 Duvia Orazio VEHICLE WITH A LOAD OPENING AT THE TOP, WHICH CAN BE TIPPED AND LOADED.
US2577038A (en) * 1950-02-25 1951-12-04 Rca Corp Television color picture tube
US2741720A (en) * 1951-02-01 1956-04-10 Gen Electric Color television apparatus and methods
US2927234A (en) * 1955-11-25 1960-03-01 Rca Corp Photoconductive image intensifier
US2906884A (en) * 1956-02-02 1959-09-29 Jr Edwin R Gill Amflector system
US3278679A (en) * 1963-06-13 1966-10-11 Gen Electric Electron-optical readout of latent electrostatic image
US3524197A (en) * 1968-05-28 1970-08-11 Sanders Associates Inc High intensity projection cathode ray tube
DE2753412C2 (en) * 1977-11-30 1983-06-23 Max Planck Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Rotationally symmetrical ion-electron converter

Also Published As

Publication number Publication date
US2264709A (en) 1941-12-02
FR831215A (en) 1938-08-26

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