GB778793A - Improvements in or relating to devices for intensifying images produced by radiation - Google Patents

Improvements in or relating to devices for intensifying images produced by radiation

Info

Publication number
GB778793A
GB778793A GB20375/55A GB2037555A GB778793A GB 778793 A GB778793 A GB 778793A GB 20375/55 A GB20375/55 A GB 20375/55A GB 2037555 A GB2037555 A GB 2037555A GB 778793 A GB778793 A GB 778793A
Authority
GB
United Kingdom
Prior art keywords
photo
conductive layer
layer
radiation
devices
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
GB20375/55A
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 GB778793A publication Critical patent/GB778793A/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
    • H01J29/39—Charge-storage screens
    • H01J29/41—Charge-storage screens using secondary emission, e.g. for supericonoscope
    • 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
    • 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

Landscapes

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

Abstract

778,793. Photo-conductive devices. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 14,1955 [July 23, 1954], No. 20375/55. Class 37. [Also in Group XL (a)] An image intensifier preferably for X-rays, has a photo-conductive layer 3 for receiving the radiation and setting up a conductivity image, and a photo-emissive layer 5 which is irradiated uniformly with infra-red by a lamp 6 and emits an electron image corresponding to the conductivity image. A. voltage gradient is set up across the photo-conductive layer between highresistance layer 4 which separates layers 3 and 5, and a transparent conductive layer 2 on the front face of the photo-conductive layer. The photo-conductive layer may be CdS, CdSe or CdTe; it may be composed of filaments of photo-conductive material embedded in a matrix of glass. After cooling the molten glass in manufacture, the filaments are exposed by grinding. The photo-emissive layer may be caesium silver oxide or caesiated antimony. The high-resistance layer 4 may be carbon, and may be opaque to the infra-red. Transparent conductive layer 2 is of aluminium.
GB20375/55A 1954-07-23 1955-07-14 Improvements in or relating to devices for intensifying images produced by radiation Expired GB778793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US445271A US2929935A (en) 1954-07-23 1954-07-23 Image amplifier

Publications (1)

Publication Number Publication Date
GB778793A true GB778793A (en) 1957-07-10

Family

ID=23768244

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20375/55A Expired GB778793A (en) 1954-07-23 1955-07-14 Improvements in or relating to devices for intensifying images produced by radiation

Country Status (4)

Country Link
US (1) US2929935A (en)
DE (1) DE1032440B (en)
FR (1) FR1127819A (en)
GB (1) GB778793A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107303A (en) * 1960-12-28 1963-10-15 Bell Telephone Labor Inc Positive or negative high gain image amplifier
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
GB1092094A (en) * 1963-08-20 1967-11-22 Mullard Ltd Improvements in or relating to photo-cathodes
US3436550A (en) * 1963-09-05 1969-04-01 Jack Finkle Electronic pick-up tube for incident x-rays with image intensifier
US3475411A (en) * 1966-12-27 1969-10-28 Varian Associates Mosaic x-ray pick-up screen for x-ray image intensifier tubes
US3772562A (en) * 1968-07-12 1973-11-13 Bendix Corp Phosphor screen assembly
EP0894421A1 (en) * 1996-07-08 1999-02-03 Koninklijke Philips Electronics N.V. Correction of fixed pattern noise

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515301A (en) * 1938-03-29 1939-12-01 Hans Gerhard Lubszynski Improvements in or relating to photo electric devices
DE915963C (en) * 1944-10-09 1954-08-02 Aeg Process for the production of cadmium sulfide photo layers
US2572494A (en) * 1946-06-28 1951-10-23 Rca Corp Velocity selection in electron tubes
US2683832A (en) * 1948-04-15 1954-07-13 Pye Ltd Image pickup electron tube
US2523132A (en) * 1949-08-10 1950-09-19 Westinghouse Electric Corp Photosensitive apparatus
US2747131A (en) * 1951-10-12 1956-05-22 Sheldon Edward Emanuel Electronic system sensitive to invisible images
US2699512A (en) * 1951-11-21 1955-01-11 Sheldon Edward Emanuel Camera for invisible radiation images
US2747132A (en) * 1951-12-18 1956-05-22 Sheldon Edward Emanuel Device sensitive to invisible images
US2650310A (en) * 1952-10-10 1953-08-25 Gen Electric X-ray image intensification and method

Also Published As

Publication number Publication date
FR1127819A (en) 1956-12-26
US2929935A (en) 1960-03-22
DE1032440B (en) 1958-06-19

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