GB621097A - Improvements in or relating to dark trace tubes and the operation thereof - Google Patents

Improvements in or relating to dark trace tubes and the operation thereof

Info

Publication number
GB621097A
GB621097A GB399647A GB399647A GB621097A GB 621097 A GB621097 A GB 621097A GB 399647 A GB399647 A GB 399647A GB 399647 A GB399647 A GB 399647A GB 621097 A GB621097 A GB 621097A
Authority
GB
United Kingdom
Prior art keywords
plate
ruling
depositing
grids
ruled
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
GB399647A
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.)
Scophony Ltd
Original Assignee
Scophony 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 Scophony Ltd filed Critical Scophony Ltd
Priority to GB399647A priority Critical patent/GB621097A/en
Publication of GB621097A publication Critical patent/GB621097A/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
    • H01J29/14—Screens on or from which an image or pattern is formed, picked up, converted or stored acting by discoloration, e.g. halide screen

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

621,097. Discharge apparatus. SCOPHONY, Ltd.,. WIKKENHAUSER, G., and FRANKLIN, D. P. Feb. 11, 1947, No. 3996. [Class 39 (i)] [Also in Group XL (b)] The removal of opacity centres formed in a screen of dark trace material by the impingement of radiant energy is carried out by dielectric heating. The crystalline material is mounted on a plate of glass, silicone or other material having a sufficiently high dielectric loss constant, enclosed between two electrodes, e.g. two metal grids of parallel wires, one disposed at right angles to the other giving a square ruling which may be utilized for the evaluation of oscillograms. Alternatively, the grids may be formed by ruling the glass plate on both sides and depositing a metal such as silver or platinum in the ruled grooves, or by depositing very thin metal layers on the two main surfaces of the plate, or having one surface ruled and the other surface bearing a continuous layer. Specifications 513,776 and 524,230 are referred to.
GB399647A 1947-02-11 1947-02-11 Improvements in or relating to dark trace tubes and the operation thereof Expired GB621097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB399647A GB621097A (en) 1947-02-11 1947-02-11 Improvements in or relating to dark trace tubes and the operation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB399647A GB621097A (en) 1947-02-11 1947-02-11 Improvements in or relating to dark trace tubes and the operation thereof

Publications (1)

Publication Number Publication Date
GB621097A true GB621097A (en) 1949-04-04

Family

ID=9768794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB399647A Expired GB621097A (en) 1947-02-11 1947-02-11 Improvements in or relating to dark trace tubes and the operation thereof

Country Status (1)

Country Link
GB (1) GB621097A (en)

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