GB980073A - Improvements in or relating to ultrasonic pick-up tubes and circuit arrangements embodying such tubes - Google Patents

Improvements in or relating to ultrasonic pick-up tubes and circuit arrangements embodying such tubes

Info

Publication number
GB980073A
GB980073A GB1699660A GB1699660A GB980073A GB 980073 A GB980073 A GB 980073A GB 1699660 A GB1699660 A GB 1699660A GB 1699660 A GB1699660 A GB 1699660A GB 980073 A GB980073 A GB 980073A
Authority
GB
United Kingdom
Prior art keywords
target
tubes
cathode
ultrasonic
positively charged
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
GB1699660A
Inventor
Hans Gerhard Lubszynski
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1699660A priority Critical patent/GB980073A/en
Publication of GB980073A publication Critical patent/GB980073A/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
    • H01J31/495—Pick-up tubes adapted for an input of sonic, ultrasonic, or mechanical vibrations and having an electric output

Landscapes

  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

980,073. Ultrasonic pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 28, 1961 [May 13, 1960], No. 16996/60. Heading H1D. In an ultrasonic pick-up tube, the vibration sensitive target 2 is initially, positively charged, e.g. by a fast flood beam from annular cathode 10, and is then exposed to an ultrasonic image, e.g. for five cycles, and to a slow flood beam from cathode 10, for the formation of a negative charge image, and is finally discharged to an equilibrium potential by a scanning beam from cathode 5 to obtain output signals, e.g. from conductive target backing 3 or from an electron multiplier into which the returning electron beam is directed. The target may be positively charged, and the negative charge image formed during frame-return periods of the scanning beam. Suitable operating potentials are given. The tube may be immersed in a longitudinal magnetic field. The target may comprise a continuous quartz crystal supported at its inner surface by a metal grille which may also constitute the grid 9 across one end of wall anode 8. Alternatively, the target may comprise elementary crystals arranged in the apertures of a metal grille.
GB1699660A 1960-05-13 1960-05-13 Improvements in or relating to ultrasonic pick-up tubes and circuit arrangements embodying such tubes Expired GB980073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1699660A GB980073A (en) 1960-05-13 1960-05-13 Improvements in or relating to ultrasonic pick-up tubes and circuit arrangements embodying such tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1699660A GB980073A (en) 1960-05-13 1960-05-13 Improvements in or relating to ultrasonic pick-up tubes and circuit arrangements embodying such tubes

Publications (1)

Publication Number Publication Date
GB980073A true GB980073A (en) 1965-01-13

Family

ID=10087353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1699660A Expired GB980073A (en) 1960-05-13 1960-05-13 Improvements in or relating to ultrasonic pick-up tubes and circuit arrangements embodying such tubes

Country Status (1)

Country Link
GB (1) GB980073A (en)

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