GB422158A - Improvements in or relating to cathode ray tube apparatus suitable for use in television and like transmitters - Google Patents

Improvements in or relating to cathode ray tube apparatus suitable for use in television and like transmitters

Info

Publication number
GB422158A
GB422158A GB10109/34A GB1010934A GB422158A GB 422158 A GB422158 A GB 422158A GB 10109/34 A GB10109/34 A GB 10109/34A GB 1010934 A GB1010934 A GB 1010934A GB 422158 A GB422158 A GB 422158A
Authority
GB
United Kingdom
Prior art keywords
coating
ray
continuous
cathode
squares
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
GB10109/34A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB422158A publication Critical patent/GB422158A/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
    • H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope

Abstract

422,158. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London. (Assignees of lams, H. A. ; 22, Merrick Villa, Collingswood, New Jersey, U.S.A.) April 3, 1934, No. 10109. Convention date, March 30, 1933. [Class 39 (i)] A mosaic screen scanned by a cathode-ray in a television transmitter &c., and comprising an insulating sheet carrying on the surface exposed to the ray a large number of photo-sensitized conductive elements spaced and insulated from each other, is made by applying a continuous conductive layer to the insulating sheet and ruling with a sharpedged instrument two inclined sets of parallel grooves through the layer to leave parallel rows of spaced conductive parallelograms. A mica sheet 32, Figs. 3 and 4, À001 inches thick, is provided on its back with a continuous platinum coating 36, and on its front with a continuous silver coating À0001 inches thick. Parallel grooves in two sets at right angles are then ruled through the silver coating and slightly into the sheet 32 as shown to leave silver square 34<a> separated by leakage paths greater than the width of the gap between the squares. The squares are photosensitized and an image to be transmitted is projected on to them, image currents being led off from the coating 36.
GB10109/34A 1933-03-30 1934-04-03 Improvements in or relating to cathode ray tube apparatus suitable for use in television and like transmitters Expired GB422158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663451A US2120099A (en) 1933-03-30 1933-03-30 Mosaic screen structure

Publications (1)

Publication Number Publication Date
GB422158A true GB422158A (en) 1935-01-07

Family

ID=24661868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10109/34A Expired GB422158A (en) 1933-03-30 1934-04-03 Improvements in or relating to cathode ray tube apparatus suitable for use in television and like transmitters

Country Status (3)

Country Link
US (1) US2120099A (en)
FR (1) FR766808A (en)
GB (1) GB422158A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638660A (en) * 1945-04-03 1953-05-19 Philips Lab Inc Electrical insulator
US2730639A (en) * 1950-10-16 1956-01-10 Emi Ltd Target structures such as are utilised in television transmission tubes
BE515191A (en) * 1951-12-14
US2745284A (en) * 1952-02-20 1956-05-15 Pittsburgh Plate Glass Co Glass radiometer
US3366818A (en) * 1965-07-06 1968-01-30 Ibm Cathode ray device with screen having integrity against stress

Also Published As

Publication number Publication date
US2120099A (en) 1938-06-07
FR766808A (en) 1934-07-04

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