GB1406437A - X-ray image converters - Google Patents

X-ray image converters

Info

Publication number
GB1406437A
GB1406437A GB5858071A GB5858071A GB1406437A GB 1406437 A GB1406437 A GB 1406437A GB 5858071 A GB5858071 A GB 5858071A GB 5858071 A GB5858071 A GB 5858071A GB 1406437 A GB1406437 A GB 1406437A
Authority
GB
United Kingdom
Prior art keywords
image
photoelectrons
ray image
dec
give
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
GB5858071A
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve Co Ltd
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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to GB5858071A priority Critical patent/GB1406437A/en
Publication of GB1406437A publication Critical patent/GB1406437A/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
    • 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

Abstract

1406437 X-ray image converters ENGLISH ELECTRIC VALVE CO Ltd 1 Dec 1972 [16 Dec 1971] 58580/71 Heading H1D An X-ray image converter has a photocathode 3 of silicon treated to have negative electron affinity, e.g. by means of a coating 4 of a semiconductor such as Cs 2 O or CsF, means being provided to accelerate the photoelectrons to derive an image or signal representing the image. In Fig. 2 the photoelectrons impinge on a storage target 12 scanned by a beam 15, the repelled electrons being collected by electron multiplier 18 to give an electrical signal at 19. In Fig. 1 (not shown) the photoelectrons are accelerated to a phosphor screen (8) to give a visible image. The silicon photocathode can form part of the envelope.
GB5858071A 1971-12-16 1971-12-16 X-ray image converters Expired GB1406437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5858071A GB1406437A (en) 1971-12-16 1971-12-16 X-ray image converters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5858071A GB1406437A (en) 1971-12-16 1971-12-16 X-ray image converters

Publications (1)

Publication Number Publication Date
GB1406437A true GB1406437A (en) 1975-09-17

Family

ID=10481952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5858071A Expired GB1406437A (en) 1971-12-16 1971-12-16 X-ray image converters

Country Status (1)

Country Link
GB (1) GB1406437A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912737A (en) * 1987-10-30 1990-03-27 Hamamatsu Photonics K.K. X-ray image observing device
EP0928494B1 (en) * 1997-07-28 2005-01-12 Motorola, Inc. Electron emitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912737A (en) * 1987-10-30 1990-03-27 Hamamatsu Photonics K.K. X-ray image observing device
EP0928494B1 (en) * 1997-07-28 2005-01-12 Motorola, Inc. Electron emitter

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees