GB772572A - Improvements in or relating to x-ray image transformers - Google Patents

Improvements in or relating to x-ray image transformers

Info

Publication number
GB772572A
GB772572A GB14781/55A GB1478155A GB772572A GB 772572 A GB772572 A GB 772572A GB 14781/55 A GB14781/55 A GB 14781/55A GB 1478155 A GB1478155 A GB 1478155A GB 772572 A GB772572 A GB 772572A
Authority
GB
United Kingdom
Prior art keywords
electroluminescent
manganese
ray image
layer
zns
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
GB14781/55A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB772572A publication Critical patent/GB772572A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K4/00Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Luminescent Compositions (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

772,572. Electroluminescence. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. May 23, 1955 [May 28, 1954], No. 14781/55. Class 39(1). An X-ray image transformer comprises an electroluminescent cell irradiated by the X-rays to give an enhanced brightness of the luminescent screen. An electroluminescent layer 20 of ZnS, Cd S activated by manganese with or without sulphur, is superimposed in Fig. 3 on a layer of dielectric material 22, both being enclosed between transparent conductive layers 24, 26, and the whole enclosed between a viewing plate 28 and an insulating layer 30. An alternating potential is applied across the conductive layers. The ratio of ZnS and CdS in the electroluminescent material may be from 9 : 1 to 3 : 7, the manganese in a mol. proportion of 0À3 x 10<-2> to 1À1 x 10<-2>, and the silver from a mere trace to 1À0 x 10<-2> mols per mol of manganese. Specific examples of materials are described and graphs are given showing the brightness and sensitivities of the devices. The electroluminescent material may be dispersed in the dielectric material.
GB14781/55A 1954-05-28 1955-05-23 Improvements in or relating to x-ray image transformers Expired GB772572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US772572XA 1954-05-28 1954-05-28

Publications (1)

Publication Number Publication Date
GB772572A true GB772572A (en) 1957-04-17

Family

ID=22137015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14781/55A Expired GB772572A (en) 1954-05-28 1955-05-23 Improvements in or relating to x-ray image transformers

Country Status (1)

Country Link
GB (1) GB772572A (en)

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