GB613003A - Improvements in targets for television transmitting tubes - Google Patents

Improvements in targets for television transmitting tubes

Info

Publication number
GB613003A
GB613003A GB12133/41A GB1213341A GB613003A GB 613003 A GB613003 A GB 613003A GB 12133/41 A GB12133/41 A GB 12133/41A GB 1213341 A GB1213341 A GB 1213341A GB 613003 A GB613003 A GB 613003A
Authority
GB
United Kingdom
Prior art keywords
glass
cms
targets
ohm
sept
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
GB12133/41A
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.)
Marconis Wireless Telegraph Co 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 GB613003A publication Critical patent/GB613003A/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
    • H01J29/413—Charge-storage screens using secondary emission, e.g. for supericonoscope for writing and reading of charge pattern on opposite sides of the target, e.g. for superorthicon
    • 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
    • H01J31/34—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 cathode potential, e.g. orthicon
    • 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
    • H01J31/34—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 cathode potential, e.g. orthicon
    • H01J31/36—Tubes with image amplification section, e.g. image-orthicon

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

613,003. Glass. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 19, 1941, No. 12133. Convention date, Sept. 20, 1940. Drawings to Specification. [Class 56] [Also in Group XL (a)] A thin, flat, glass sheet, for use as a target in a cathode-ray television transmission tube, is prepared by blowing a bubble on to a metal ring and then heating it in a furnace until the surface tension draws the glass flat. The thickness may be of the order of 0.001 cms. and the glass is semi-conducting, its volume resistivity varying from 10<SP>9</SP> to 10<SP>12</SP> ohm-cms., preferably 5 x 10<SP>10</SP> ohm-cms.
GB12133/41A 1940-09-20 1941-09-19 Improvements in targets for television transmitting tubes Expired GB613003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US613003XA 1940-09-20 1940-09-20

Publications (1)

Publication Number Publication Date
GB613003A true GB613003A (en) 1948-11-22

Family

ID=22034893

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12133/41A Expired GB613003A (en) 1940-09-20 1941-09-19 Improvements in targets for television transmitting tubes

Country Status (2)

Country Link
DE (1) DE901792C (en)
GB (1) GB613003A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE530863A (en) * 1953-08-04

Also Published As

Publication number Publication date
DE901792C (en) 1954-01-14

Similar Documents

Publication Publication Date Title
GB614248A (en) Improvements in or relating to television and like pick-up tubes
GB720948A (en) Improvements in or relating to a method of manufacturing cathode-ray tubes comprising a hollow glass cone
GB620836A (en) Improvements in target electrodes for television transmitter tubes
GB569436A (en) Improvements in television transmitting tubes
GB613003A (en) Improvements in targets for television transmitting tubes
GB513111A (en) Improvements in or relating to electron discharge devices
GB445978A (en) Improvements in or relating to cathode ray tubes for television and like purposes
GB508391A (en) Improvements in or relating to cathode ray tube television transmitters
GB441522A (en) Improvements in or relating to means for bending small tubes, pipes, and the like
GB503495A (en) Improvements in and relating to electric heating units
GB604785A (en) Improvements in or relating to the exhaust tube constructions in the envelopes of electric discharge tubes
GB444843A (en) Improvements in storage photo-electric devices
GB427901A (en) Improvements in and relating to television and the like transmission systems
AU203283B1 (en) Arrangement for preventing the afterglow ofthe steady luminous spot afterthe switching-off of apparatus employing cathode-ray tubes, particularly television sets
USD205878S (en) Carrying case for telephonic com- munications apparatus
JPS5329613A (en) Pick up tube
GB479751A (en) Improvements in or relating to television receiving apparatus
GB586616A (en) Production of television mosaic screens
GB513640A (en) Electron discharge devices particularly cathode ray tubes
AU182331A (en) An improved television set of the kind employing gas dicharge devices and other similar apparatus exhibiting negative resistance characteristics
JPS5760643A (en) Cathode-ray tube
GB498134A (en) Improvements in or relating to mosaic electrode structures for use in cathode ray apparatus for television and similar purposes
GB452406A (en) Improvements in and relating to screens for cathode ray apparatus
GB491413A (en) Improvements in or relating to cathode ray television transmitter tubes
GB517579A (en) Improvements in or relating to cathode ray tubes