GB1358475A - Camera tubes - Google Patents

Camera tubes

Info

Publication number
GB1358475A
GB1358475A GB735372*[A GB735372A GB1358475A GB 1358475 A GB1358475 A GB 1358475A GB 735372 A GB735372 A GB 735372A GB 1358475 A GB1358475 A GB 1358475A
Authority
GB
United Kingdom
Prior art keywords
tube
fusible means
conductors
pick
fused
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
GB735372*[A
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve 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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to GB735372*[A priority Critical patent/GB1358475A/en
Priority to US00325458A priority patent/US3813572A/en
Priority to CA162,414A priority patent/CA952959A/en
Priority to DE19732305930 priority patent/DE2305930C3/en
Priority to NL7301844A priority patent/NL7301844A/xx
Priority to FR7305683A priority patent/FR2172410B1/fr
Priority to JP48019684A priority patent/JPS4895722A/ja
Publication of GB1358475A publication Critical patent/GB1358475A/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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • 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
    • 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
    • H01J31/38—Tubes with photoconductive screen, e.g. vidicon

Landscapes

  • Surgical Instruments (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Secondary Cells (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

1358475 Image pick up tubes ENGLISH ELECTRIC VALVE CO Ltd 16 Nov 1972 [17 Feb 1972] 7353/72 Heading H1D A camera tube comprises a wall anode connected to an external terminal and a mesh electrode disposed in front thereof, two diametrically opposed conductors extending therefrom to a further terminal external of the tube envelope, and fusible means 7, 8 internal of the envelope provided to electrically connect the wall anode to the opposed conductors, whereby the tube after completion of manufacture, may be converted from a tube exhibiting characteristics of the integral mesh type, Fig. 1 (not shown), to a separate mesh type, Fig. 2 (not shown) by fusing the fusible means. Preferably the fusible means is two thin Pt strips, conversion being by passage of current via terminals 3, 4. Further fusible means 9 of greater current carrying capacity is fused by RF heating after manufacture while leaving the first means intact. Where an integral mesh tube is required, strip 9 is fused to break open the loop of conductors 5, 6 to inhibit inductive pick up. Reference is made to prior art opposed conductors minimizing "line scan pick up" by rotation of tube to achieve cancelling, the above construction eliminating the requirement of use at a particular orientation.
GB735372*[A 1972-02-17 1972-02-17 Camera tubes Expired GB1358475A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB735372*[A GB1358475A (en) 1972-02-17 1972-02-17 Camera tubes
US00325458A US3813572A (en) 1972-02-17 1973-01-22 Camera tube convertible from integral mesh to separate mesh type
CA162,414A CA952959A (en) 1972-02-17 1973-01-30 Camera tubes
DE19732305930 DE2305930C3 (en) 1972-02-17 1973-02-07 TV camera pickup tube
NL7301844A NL7301844A (en) 1972-02-17 1973-02-09
FR7305683A FR2172410B1 (en) 1972-02-17 1973-02-16
JP48019684A JPS4895722A (en) 1972-02-17 1973-02-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB735372*[A GB1358475A (en) 1972-02-17 1972-02-17 Camera tubes

Publications (1)

Publication Number Publication Date
GB1358475A true GB1358475A (en) 1974-07-03

Family

ID=9831500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB735372*[A Expired GB1358475A (en) 1972-02-17 1972-02-17 Camera tubes

Country Status (6)

Country Link
US (1) US3813572A (en)
JP (1) JPS4895722A (en)
CA (1) CA952959A (en)
FR (1) FR2172410B1 (en)
GB (1) GB1358475A (en)
NL (1) NL7301844A (en)

Also Published As

Publication number Publication date
JPS4895722A (en) 1973-12-07
FR2172410A1 (en) 1973-09-28
CA952959A (en) 1974-08-13
FR2172410B1 (en) 1976-05-14
DE2305930B2 (en) 1975-08-07
NL7301844A (en) 1973-08-21
US3813572A (en) 1974-05-28
DE2305930A1 (en) 1973-09-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee