GB789090A - Improvements in or relating to x-ray image intensifiers - Google Patents

Improvements in or relating to x-ray image intensifiers

Info

Publication number
GB789090A
GB789090A GB10896/55A GB1089655A GB789090A GB 789090 A GB789090 A GB 789090A GB 10896/55 A GB10896/55 A GB 10896/55A GB 1089655 A GB1089655 A GB 1089655A GB 789090 A GB789090 A GB 789090A
Authority
GB
United Kingdom
Prior art keywords
layer
fluorescent
electron
april
photo
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
GB10896/55A
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 GB789090A publication Critical patent/GB789090A/en
Expired 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
    • H01J29/02—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
    • 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

789,090. Cathode-ray tubes. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. April 15, 1955 [April 19, 1954], No. 10896/55. Class 39(1). An X-ray image intensifier input screen 2 comprises a support member 3, e.g. a watchglass plate, having on one surface a fluorescent layer 4 and on the other surface an electrically conductive layer 5, e.g., of tin oxide, the member 3 and layer 4 being transparent to radiations from the layer 4, a layer 6 of photoconductive material on the layer 5 and a photoelectrically emissive layer 7, e.g. of caesiated antimony, on the layer 6, the photo-conductive layer 6 being transmissive to a substantial portion of the radiation emitted from the fluorescent layer 4 and serving to increase the contrast of the electron image produced by the layer 7 with respect to the contrast of the light image produced by the fluorescent layer 4. The fluorescent layer 4 can be a zinc sulphide layer and the photo-conductive layer 6 can comprise a material from the group consisting of selenium, arsenic, trisulphide, antimony trisulphide and cadmium sulphide. An electron lens system 13 is positioned between the input screen 2 and an output screen 8 which comprises a glass plate 9 coated with a layer 11 of an electron-responsive phosphor coated with a thin layer 12 of aluminium.
GB10896/55A 1954-04-19 1955-04-15 Improvements in or relating to x-ray image intensifiers Expired GB789090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US424073A US2824986A (en) 1954-04-19 1954-04-19 Increasing contrast of the image intensifier

Publications (1)

Publication Number Publication Date
GB789090A true GB789090A (en) 1958-01-15

Family

ID=23681340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10896/55A Expired GB789090A (en) 1954-04-19 1955-04-15 Improvements in or relating to x-ray image intensifiers

Country Status (3)

Country Link
US (1) US2824986A (en)
FR (1) FR1129980A (en)
GB (1) GB789090A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905829A (en) * 1955-01-25 1959-09-22 Westinghouse Electric Corp Image amplifier
US2963365A (en) * 1956-02-16 1960-12-06 Rca Corp Electrostatic printing
US2962375A (en) * 1956-05-02 1960-11-29 Haloid Xerox Inc Color xerography
US2901349A (en) * 1957-05-23 1959-08-25 Haloid Xerox Inc Xerographic plate
US3088883A (en) * 1958-01-14 1963-05-07 Motorola Inc Electrophotographic system
DE1120035B (en) * 1958-02-18 1961-12-21 Optische Ind Iade Oude Delftia Electron-optical imaging device
DE1250739B (en) * 1958-05-12 1900-01-01
US3148297A (en) * 1959-11-27 1964-09-08 Westinghouse Electric Corp Electron device with storage capabilities
US3368077A (en) * 1963-03-08 1968-02-06 Electro Optical Systems Inc Infra-red image intensifier having a tunnel-emission cathode having a conductive mosaic
US3443104A (en) * 1966-02-17 1969-05-06 Rauland Corp Image intensifier tube with shading compensation
US3697795A (en) * 1970-11-20 1972-10-10 Machlett Lab Inc Image intensifier tube having a multi-radius photocathode

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR817180A (en) * 1936-03-04 1937-08-27 Electrical Res Prod Inc Method and apparatus for producing image streams in electro-optical image transmission systems
USRE23802E (en) * 1948-11-05 1954-03-16 Photocathode
US2523132A (en) * 1949-08-10 1950-09-19 Westinghouse Electric Corp Photosensitive apparatus
US2650310A (en) * 1952-10-10 1953-08-25 Gen Electric X-ray image intensification and method

Also Published As

Publication number Publication date
FR1129980A (en) 1957-01-29
US2824986A (en) 1958-02-25

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