GB1321470A - Electron optics for a minifying image tube - Google Patents

Electron optics for a minifying image tube

Info

Publication number
GB1321470A
GB1321470A GB4698770A GB4698770A GB1321470A GB 1321470 A GB1321470 A GB 1321470A GB 4698770 A GB4698770 A GB 4698770A GB 4698770 A GB4698770 A GB 4698770A GB 1321470 A GB1321470 A GB 1321470A
Authority
GB
United Kingdom
Prior art keywords
electrode
image
anode
screen
focusing electrode
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
GB4698770A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1321470A publication Critical patent/GB1321470A/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
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/501—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electrostatic electron optic system
    • 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

Landscapes

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

Abstract

1321470 Image converters VARIAN ASSOCIATES 2 Oct 1970 [3 Oct 1969] 46987/70 Heading H1D An image tube having a curved photocathode 7 and a flat fluorescent screen 8 has a system of electron lenses to accelerate and focus a diminished electron image on to the fluorescent screen, the lens system comprising cylindrical electrodes 28, 23, 16 and anode 12 which have successively smaller apertures and in which the mouth portion 21 of anode 12 lies within the exit portion 19 of the preceding electrode 16. The electrode arrangement is stated to remove peripheral distortion of the image on screen 8. The anode 12 is supported adjacent and conductively connected to a thin conducting layer, e.g. aluminium, on the surface of the image converter screen. The focusing electrode 23 is supported from electrode 16 by circumferencially-disposed support insulator structures 26 such that its entrance aperture 24 is within the exit aperture 31 of the preceding focusing electrode 28 and its exit aperture 25 surrounds the entrance aperture 17 of the following focusing electrode 16. The electrode 28 may comprise a conductive layer of A1 on the envelope wall conductively connected to mating metallic frame portions 30. In an X-ray converter tube the photocathode 7 is formed as a layer on a scintillator 6 which itself is formed on a domed conductive electrode 5 which is transparent to X-rays and has a cylindrical extension 5<SP>1</SP> which extends within the frame portions 30 forming the entrance aperture of the first focusing electrode 28.
GB4698770A 1969-10-03 1970-10-02 Electron optics for a minifying image tube Expired GB1321470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86350869A 1969-10-03 1969-10-03

Publications (1)

Publication Number Publication Date
GB1321470A true GB1321470A (en) 1973-06-27

Family

ID=25341229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4698770A Expired GB1321470A (en) 1969-10-03 1970-10-02 Electron optics for a minifying image tube

Country Status (6)

Country Link
US (1) US3683194A (en)
JP (1) JPS4819503B1 (en)
DE (1) DE2048538A1 (en)
FR (1) FR2064964A5 (en)
GB (1) GB1321470A (en)
NL (1) NL7014551A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2049127C3 (en) * 1970-10-07 1975-04-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Image intensifier
US3896331A (en) * 1973-06-28 1975-07-22 Varian Associates Electron optical system
US4315184A (en) * 1980-01-22 1982-02-09 Westinghouse Electric Corp. Image tube
NL8801050A (en) * 1988-04-22 1989-11-16 Philips Nv IMAGE AMPLIFIER TUBE.
WO1997049111A1 (en) * 1996-06-17 1997-12-24 Battelle Memorial Institute Method and apparatus for ion and charged particle focusing
US6107628A (en) * 1998-06-03 2000-08-22 Battelle Memorial Institute Method and apparatus for directing ions and other charged particles generated at near atmospheric pressures into a region under vacuum
JP4237308B2 (en) * 1998-11-10 2009-03-11 浜松ホトニクス株式会社 Photomultiplier tube
US7276704B1 (en) * 2000-05-08 2007-10-02 Hamamatsu Photonics K.K. Photomultiplier tube, photomultiplier tube unit, and radiation detector
CN113451091B (en) * 2021-05-20 2023-06-02 金陵科技学院 Large detection area fringe image converter tube with single lens focusing system and camera

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928969A (en) * 1956-05-11 1960-03-15 Westinghouse Electric Corp Image device
US3026437A (en) * 1958-10-20 1962-03-20 Rauland Corp Electron discharge device
NL144089C (en) * 1962-12-20 1975-04-15 Philips Nv ELECTRONOPTIC IMAGE AMPLIFIER DEVICE, AS WELL AS ELECTRONOPTIC IMAGE AMPLIFIER TUBE.
US3474275A (en) * 1966-09-26 1969-10-21 Rca Corp Image tube having a gating and focusing electrode

Also Published As

Publication number Publication date
FR2064964A5 (en) 1971-07-23
DE2048538A1 (en) 1971-04-15
NL7014551A (en) 1971-04-06
US3683194A (en) 1972-08-08
JPS4819503B1 (en) 1973-06-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees