GB770459A - X-ray image intensifier system - Google Patents

X-ray image intensifier system

Info

Publication number
GB770459A
GB770459A GB17579/54A GB1757954A GB770459A GB 770459 A GB770459 A GB 770459A GB 17579/54 A GB17579/54 A GB 17579/54A GB 1757954 A GB1757954 A GB 1757954A GB 770459 A GB770459 A GB 770459A
Authority
GB
United Kingdom
Prior art keywords
photo
target
charges
positive direction
electrons
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
GB17579/54A
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.)
Raytheon Co
Original Assignee
Hughes Aircraft 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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of GB770459A publication Critical patent/GB770459A/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
    • 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
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
    • H01J31/30—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at anode potential, e.g. iconoscope
    • 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
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/48—Tubes with amplification of output effected by electron multiplier arrangements within the vacuum space
    • 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
    • H01J31/49—Pick-up adapted for an input of electromagnetic radiation other than visible light and having an electric output, e.g. for an input of X-rays, for an input of infrared radiation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

770,459. Television pick-up tubes. HUGHES AIRCRAFT CO. June 15, 1954, No. 17579/54. Class 39(1). [Also in Group XL(b)] A system for prolonged visual presentation of an X-ray image of short duration comprises a camera tube 10 with a negative feedback circuit 16, including a video amplifier 41, between the secondary electron collector and signal electrode 27 and a transparent electrode 32 backing the photo-conductive target 33. The signal is also fed, through a video amplifier 45, to the display tube 14. The potential of an elemental scanned area is shifted to a stable potential where the secondary emission ratio is unity so as not to erase the charge pattern. The charge pattern is produced by conduction through the photo-conductive layer, of charges liberated by light from a fluorescent layer 30. Where the charges are electrons e.g. with a photo-conductive target of antimony trisulphide, the charge image is discharged by the scanning beam in a positive direction and the effect of redistribution of secondary electrons is small. Where the charges are " holes e.g. with a photo -conductive target composed of red vitreous selenium, a flood gun is provided to direct high energy electrons uniformly over the target. The surface of the target is charged negatively at a faster rate than the holes change it in a positive direction, and the charge image is as before, discharged in a positive direction by the scanning beam. The charge image may be erased by disconnecting the feedback circuit. A synchronizing pulse opens switch 105, through relay 107, just prior to operation of the X-ray source. Specification 754,752 is referred to.
GB17579/54A 1953-06-30 1954-06-15 X-ray image intensifier system Expired GB770459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US365161A US2775719A (en) 1953-06-30 1953-06-30 X-ray image intensifier system

Publications (1)

Publication Number Publication Date
GB770459A true GB770459A (en) 1957-03-20

Family

ID=23437718

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11054/54A Expired GB754752A (en) 1953-06-30 1954-04-14 Electronic camera tube
GB17579/54A Expired GB770459A (en) 1953-06-30 1954-06-15 X-ray image intensifier system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB11054/54A Expired GB754752A (en) 1953-06-30 1954-04-14 Electronic camera tube

Country Status (2)

Country Link
US (1) US2775719A (en)
GB (2) GB754752A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922842A (en) * 1955-06-08 1960-01-26 Raytheon Co Stored x-ray presentation systems
US3004101A (en) * 1956-04-09 1961-10-10 Gen Electric Color radiography
GB892713A (en) * 1958-01-30 1962-03-28 Pye Ltd Improvements in or relating to television camera pick-up tube arrangements
US2971052A (en) * 1958-05-29 1961-02-07 Westinghouse Electric Corp Image translating system
US3009079A (en) * 1960-04-26 1961-11-14 Gen Electric X-ray intensification system
US3577171A (en) * 1968-09-03 1971-05-04 Vitro Corp Of America System using a modified ultrasonic imaging tube
US3811067A (en) * 1970-10-08 1974-05-14 Automation Ind Inc Ultrasonic imaging tube
RU2100866C1 (en) * 1994-09-27 1997-12-27 Крутяков Ювеналий Александрович Method of conversion of image of external power effects to electric signal and electron-beam vacuum device intended for its realization

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525832A (en) * 1946-02-20 1950-10-17 Sheldon Edward Emanuel Tube with composite photocathode for conversion and intensification of x-ray images
US2550316A (en) * 1949-01-29 1951-04-24 Remington Rand Inc Image storage device
US2654852A (en) * 1951-06-01 1953-10-06 Rca Corp Photoconductive target for cathode-ray devices

Also Published As

Publication number Publication date
US2775719A (en) 1956-12-25
GB754752A (en) 1956-08-15

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