EP0361266A3 - X-ray image intensifier - Google Patents

X-ray image intensifier Download PDF

Info

Publication number
EP0361266A3
EP0361266A3 EP19890117243 EP89117243A EP0361266A3 EP 0361266 A3 EP0361266 A3 EP 0361266A3 EP 19890117243 EP19890117243 EP 19890117243 EP 89117243 A EP89117243 A EP 89117243A EP 0361266 A3 EP0361266 A3 EP 0361266A3
Authority
EP
European Patent Office
Prior art keywords
ray image
image intensifier
fluorescent screen
electrode
entrance
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.)
Withdrawn
Application number
EP19890117243
Other languages
German (de)
French (fr)
Other versions
EP0361266A2 (en
Inventor
Richard Frank
Fritz-Walter Dr. Hofmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0361266A2 publication Critical patent/EP0361266A2/en
Publication of EP0361266A3 publication Critical patent/EP0361266A3/en
Withdrawn legal-status Critical Current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
    • 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

Landscapes

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

Abstract

Ein Röntgenbildverstärker (5a) besitzt ein Elektroden­ system zum Fokussieren der beim Auftreffen von Röntgen­ strahlung auf dem Eingangsleuchtschirm (4) des Röntgen­ bildverstärkers (5a) erzeugten Elektronen auf den Ausgangsleuchtschirm (7) des Röntgenbildverstärkers (5a). Dieses Elektrodensystem soll vereinfacht sein, wobei die Anzahl der Elektroden reduziert und die Abbildungseigen­ schaften verbessert sind. An X-ray image intensifier (5a) has an electrode system for focusing when X-rays hit radiation on the entrance screen (4) of the x-ray image intensifier (5a) generated electrons on the Output fluorescent screen (7) of the X-ray image intensifier (5a). This electrode system should be simplified, the Number of electrodes reduced and the imaging properties are improved.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß eine Elektrode der Elektronenoptik aus elektrischem Widerstandsmaterial als Belag (15) auf einem den Mantel des Vakuumgefäßes bildenden einstückigen Elektrodenträger (14a) aufgebracht ist und daß eine Spannung an den Belag (15) gelegt ist, so daß das Potentialfeld im Bereich vom Eingangsleuchtschirm (4) zum Ausgangsleuchtschirm (7) kontinuierlich ansteigt. According to the invention the object is achieved in that an electrode of electron optics from electrical Resistance material as a covering (15) on the jacket of the one-piece electrode carrier forming the vacuum vessel (14a) is applied and that a tension on the surface (15) is placed so that the potential field in the area of Entrance fluorescent screen (4) to exit fluorescent screen (7) rises continuously.

EP19890117243 1988-09-29 1989-09-18 X-ray image intensifier Withdrawn EP0361266A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8812346U 1988-09-29
DE8812346U DE8812346U1 (en) 1988-09-29 1988-09-29 X-ray image intensifier

Publications (2)

Publication Number Publication Date
EP0361266A2 EP0361266A2 (en) 1990-04-04
EP0361266A3 true EP0361266A3 (en) 1990-11-14

Family

ID=6828445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890117243 Withdrawn EP0361266A3 (en) 1988-09-29 1989-09-18 X-ray image intensifier

Country Status (4)

Country Link
US (1) US4996414A (en)
EP (1) EP0361266A3 (en)
JP (1) JPH0250947U (en)
DE (1) DE8812346U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8903130A (en) * 1989-12-21 1991-07-16 Philips Nv BRIGHTNESS AMPLIFIER TUBE WITH SEAL CONNECTIONS.
DE4213906A1 (en) * 1992-04-28 1993-11-04 Siemens Ag X=ray image amplifier to convert image into visible picture - comprises housing, inlet and outlet screens, electrodes, and anode
US5780961A (en) * 1993-03-05 1998-07-14 Regents Of The University Of California Ground plane insulating coating for proximity focused devices
DE69331239T2 (en) * 1993-09-29 2002-10-17 Itt Mfg Enterprises Inc VACUUM CHAMBER FOR AN IMAGE AMPLIFIER TUBE
JP3492777B2 (en) * 1993-10-29 2004-02-03 株式会社東芝 Radiation image intensifier tube and method of manufacturing the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB471817A (en) * 1935-03-14 1937-09-10 Telefunken Gmbh Improvements in or relating to electron discharge device arrangements
DE1035282B (en) * 1955-09-07 1958-07-31 Dr Fritz Schneider Electron or ion-optical lens arrangement
GB839681A (en) * 1958-02-14 1960-06-29 Rauland Corp Improvements in or relating to electron discharge devices
FR2231103A1 (en) * 1973-05-25 1974-12-20 South African Inventions Electron optical system for image amplifier tubes - has an electrode connection of semiconductor matl

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB499869A (en) * 1937-06-26 1939-01-26 Hans Gerhard Lubszynski Improvements in or relating to electron discharge devices
US3026437A (en) * 1958-10-20 1962-03-20 Rauland Corp Electron discharge device
US3143681A (en) * 1959-12-07 1964-08-04 Gen Electric Spiral electrostatic electron lens
US3417242A (en) * 1965-09-20 1968-12-17 Machlett Lab Inc Image intensification system comprising remote control means for varying the size of the output image
NL149636B (en) * 1967-06-09 1976-05-17 Optische Ind De Oude Delft Nv VACUUM TUBE FOR ELECTRON-OPTICAL IMAGE.
JPS4827752B1 (en) * 1969-12-17 1973-08-25

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB471817A (en) * 1935-03-14 1937-09-10 Telefunken Gmbh Improvements in or relating to electron discharge device arrangements
DE1035282B (en) * 1955-09-07 1958-07-31 Dr Fritz Schneider Electron or ion-optical lens arrangement
GB839681A (en) * 1958-02-14 1960-06-29 Rauland Corp Improvements in or relating to electron discharge devices
FR2231103A1 (en) * 1973-05-25 1974-12-20 South African Inventions Electron optical system for image amplifier tubes - has an electrode connection of semiconductor matl

Also Published As

Publication number Publication date
JPH0250947U (en) 1990-04-10
US4996414A (en) 1991-02-26
DE8812346U1 (en) 1990-02-01
EP0361266A2 (en) 1990-04-04

Similar Documents

Publication Publication Date Title
DE2927811C2 (en) Computer tomograph
DE821092C (en) Photosensitive element
DE3782088T2 (en) METHOD FOR PRODUCING FLUOROSCOPIC AND RADIOGRAPHIC X-RAY IMAGES AND A PORTABLE DIAGNOSTIC APPARATUS WORKING THIS METHOD.
DE3312264A1 (en) DEVICE FOR TAKING X-RAY IMAGES
DE2831898A1 (en) DEVICE FOR CONVERSING RADIATION INTO VISIBLE LIGHT
DE4210339A1 (en) ELECTRON BEAM X-RAY COMPUTER TOMOGRAPHY DEVICE
EP0361266A3 (en) X-ray image intensifier
DE2803207A1 (en) DIRECTLY VISIBLE X-RAY IMAGE AMPLIFIER TUBE AND EQUIPMENT EQUIPPED WITH IT
DE1240549B (en) Method of operating an image pick-up tube
DD202354A5 (en) PLASMA SPRAYING OF CONVERSION SHADOWS
DE1809749A1 (en) Signal storage device
EP0279176B1 (en) X-ray diagnostic device with a storage screen
DE1078250B (en) Solid state photoconductive electroluminescent imager
DE2628474C3 (en) Recording device with image converter target for a recording tube
DE2456596A1 (en) ELECTRON DISCHARGE ARRANGEMENT
DE2239953A1 (en) DETECTOR ARRANGEMENT
DE1639462B1 (en) SOLID IMAGE CONVERTER
DE69402367T2 (en) Image intensifier tube
DE4322834A1 (en) X-ray image amplifier for various display and recording methods - suitable for use with charge coupled device T.V. imaging and having high resolution and low image distortion
DE4445894C2 (en) Imaging system
DE2306575A1 (en) X-RAY IMAGE ENHANCER
DE19743523A1 (en) X=ray image converter with reset light source e.g. for medical diagnostic imaging
DE2203432A1 (en) LINE EXAMINATION CAMERA FOR CAPTURING TRANSLIGHTING IMAGES
DE2321869A1 (en) X-RAY IMAGE ENHANCER
DE19619630A1 (en) X-ray tube with self-biasing arrangement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR

RHK1 Main classification (correction)

Ipc: H01J 31/50

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19901205