FR2108385A5 - Image converter tube - with input screen of increased photon-emissive - Google Patents

Image converter tube - with input screen of increased photon-emissive

Info

Publication number
FR2108385A5
FR2108385A5 FR7134028A FR7134028A FR2108385A5 FR 2108385 A5 FR2108385 A5 FR 2108385A5 FR 7134028 A FR7134028 A FR 7134028A FR 7134028 A FR7134028 A FR 7134028A FR 2108385 A5 FR2108385 A5 FR 2108385A5
Authority
FR
France
Prior art keywords
photons
emissive
input screen
image converter
excited
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
FR7134028A
Other languages
French (fr)
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.)
Machlett Laboratories Inc
Original Assignee
Machlett Laboratories 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 Machlett Laboratories Inc filed Critical Machlett Laboratories Inc
Application granted granted Critical
Publication of FR2108385A5 publication Critical patent/FR2108385A5/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/20—Measuring radiation intensity with scintillation detectors
    • G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
    • H01J29/385—Photocathodes comprising a layer which modified the wave length of impinging radiation
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

Parts of the active layer are transparent to the photons excited within it by incident X-rays Gamma-rays or neutrons so that a large proportion of those photons can escape from the layer to a second layr of material which is excited by them into emitting electrons. These parts are surrounded by optically reflective coatings to prevent transverse travel of the photons. The phosphor is either in the form of short parallel crystalline rods stacked together over the whole area of the screen and extending through its thickness or used to fill short parallel glass tubes. The phosphors are Cel activated with Te or Na, SeI with Th, LiI with Eu, or KI with Th.
FR7134028A 1970-09-30 1971-09-22 Image converter tube - with input screen of increased photon-emissive Expired FR2108385A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7685170A 1970-09-30 1970-09-30

Publications (1)

Publication Number Publication Date
FR2108385A5 true FR2108385A5 (en) 1972-05-19

Family

ID=22134571

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7134028A Expired FR2108385A5 (en) 1970-09-30 1971-09-22 Image converter tube - with input screen of increased photon-emissive

Country Status (6)

Country Link
CA (1) CA939428A (en)
CH (1) CH555595A (en)
DE (1) DE2147081A1 (en)
FR (1) FR2108385A5 (en)
IT (1) IT940957B (en)
NL (1) NL7113421A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386054A1 (en) * 1977-03-28 1978-10-27 Philips Nv X-RAY DETECTOR
FR2435123A1 (en) * 1978-08-30 1980-03-28 Gen Electric SCINTILLATOR STRUCTURE FOR GAMMAGRAPHY CAMERA
FR2469793A1 (en) * 1979-11-09 1981-05-22 Thomson Csf Scintillator formed by engraving in relief - using column network on support and evaporating scintillator material onto support between 300 and 350 degrees centigrade
EP0129451A1 (en) * 1983-06-16 1984-12-27 Francis Mouyen Dental radiography imaging device and particularly an intra-buccal sensor
FR2625838A1 (en) * 1988-01-13 1989-07-13 Thomson Csf INTENSIFIER RADIOLOGICAL IMAGE INTENSIFIER TUBE ENTRY SCINTILLATOR AND METHOD FOR MANUFACTURING SUCH A SCINTILLATOR

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307026C2 (en) * 1973-02-13 1983-01-20 Siemens AG, 1000 Berlin und 8000 München X-ray image intensifier input screen
JPH02187745A (en) * 1989-01-17 1990-07-23 Pioneer Electron Corp Fluorescent screen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386054A1 (en) * 1977-03-28 1978-10-27 Philips Nv X-RAY DETECTOR
FR2435123A1 (en) * 1978-08-30 1980-03-28 Gen Electric SCINTILLATOR STRUCTURE FOR GAMMAGRAPHY CAMERA
FR2469793A1 (en) * 1979-11-09 1981-05-22 Thomson Csf Scintillator formed by engraving in relief - using column network on support and evaporating scintillator material onto support between 300 and 350 degrees centigrade
EP0129451A1 (en) * 1983-06-16 1984-12-27 Francis Mouyen Dental radiography imaging device and particularly an intra-buccal sensor
FR2625838A1 (en) * 1988-01-13 1989-07-13 Thomson Csf INTENSIFIER RADIOLOGICAL IMAGE INTENSIFIER TUBE ENTRY SCINTILLATOR AND METHOD FOR MANUFACTURING SUCH A SCINTILLATOR
EP0325500A1 (en) * 1988-01-13 1989-07-26 Thomson-Csf Input screen scintillator for a radiological image intensifier tube and its manufacturing method
US4980561A (en) * 1988-01-13 1990-12-25 Thomson-Csf Input screen scintillator for an X-ray image intensifier tube and manufacturing process of this scintillator

Also Published As

Publication number Publication date
IT940957B (en) 1973-02-20
DE2147081A1 (en) 1972-05-10
CA939428A (en) 1974-01-01
NL7113421A (en) 1972-04-05
CH555595A (en) 1974-10-31

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse