[go: up one dir, main page]

GB1308086A - Apparatus including a television camera tube - Google Patents

Apparatus including a television camera tube

Info

Publication number
GB1308086A
GB1308086A GB4074671A GB4074671A GB1308086A GB 1308086 A GB1308086 A GB 1308086A GB 4074671 A GB4074671 A GB 4074671A GB 4074671 A GB4074671 A GB 4074671A GB 1308086 A GB1308086 A GB 1308086A
Authority
GB
United Kingdom
Prior art keywords
anode
aperture
cathode
grid
television camera
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
GB4074671A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1308086A publication Critical patent/GB1308086A/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
    • H01J29/48—Electron guns
    • 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

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

1308086 Television camera tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 1 Sept 1971 [4 Sept 1970] 40746/71 Heading H1D The speed at which a television camera of the vidicon type reacts to variations of light intensity is adversely affected by excess of fast electrons in the scanning electron beam; this is reduced by avoiding a cross-over in the electron gun and arranging that the axial current density of the beam at any point along its length between the cathode and anode of the gun is at most three times the current density on the axis at the cathode. The gun shown in Fig. 3 comprises a cathode 10, a grid 11 having an aperture 28 which has a smallest diameter at least 20 times that of the smallest diameter in the anode aperture, and an anode 12 provided with a small aperture 30 in a larger cylindrical bore 29. References 31-36 indicate equipotentials and references 37-41 indicate electron paths with 6À5 and 50 volts applied to the grid and anode 12. The cathode loading during scan periods should be at least 0À5 A/cm.<SP>2</SP> so that the anode aperture can be small, and the anode potential should not exceed 125 volts in order to reduce energy transfer by interactions between electrons in the beam. In a modification, Fig. 2 (not shown), the anode surface facing the grid is plane with a central cylindrical aperture for passage of the beam.
GB4074671A 1970-09-04 1971-09-01 Apparatus including a television camera tube Expired GB1308086A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7013098A NL167801C (en) 1970-09-04 1970-09-04 DEVICE WITH A TELEVISION CAMERA TUBE AND TELEVISION CAMERA TUBE FOR SUCH A DEVICE.

Publications (1)

Publication Number Publication Date
GB1308086A true GB1308086A (en) 1973-02-21

Family

ID=19810955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4074671A Expired GB1308086A (en) 1970-09-04 1971-09-01 Apparatus including a television camera tube

Country Status (8)

Country Link
JP (1) JPS5132443B1 (en)
AU (1) AU456722B2 (en)
CA (1) CA930007A (en)
DE (1) DE2142434C2 (en)
FR (1) FR2107251A5 (en)
GB (1) GB1308086A (en)
IT (1) IT939775B (en)
NL (1) NL167801C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318027A (en) 1978-04-12 1982-03-02 Rca Corporation High potential, low magnification electron gun

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54129871A (en) * 1978-02-13 1979-10-08 Philips Nv Device having camera tube
NL7809345A (en) * 1978-09-14 1980-03-18 Philips Nv CATHED BEAM TUBE.
DE2942063A1 (en) * 1979-10-17 1981-05-14 Heimann Gmbh, 6200 Wiesbaden ELECTRONIC RADIATOR GENERATOR SYSTEM FOR A CATHODE RADIATOR TUBE
US4540916A (en) * 1981-10-30 1985-09-10 Nippon Hoso Kyokai Electron gun for television camera tube

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1803244A1 (en) * 1968-10-16 1970-05-21 Fernseh Gmbh Arrangement to suppress the dragging in television tubes with slow scanning beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318027A (en) 1978-04-12 1982-03-02 Rca Corporation High potential, low magnification electron gun

Also Published As

Publication number Publication date
JPS5132443B1 (en) 1976-09-13
AU3306671A (en) 1973-03-08
FR2107251A5 (en) 1972-05-05
NL7013098A (en) 1972-03-07
DE2142434A1 (en) 1972-03-09
AU456722B2 (en) 1975-01-09
NL167801B (en) 1981-08-17
CA930007A (en) 1973-07-10
NL167801C (en) 1982-01-18
DE2142434C2 (en) 1987-01-22
IT939775B (en) 1973-02-10

Similar Documents

Publication Publication Date Title
GB1334492A (en) Laminar flow electron gun
GB1055729A (en) Cathode ray tubes
GB974974A (en) Cathode-grid assembly for electron guns
GB1234517A (en)
GB1308086A (en) Apparatus including a television camera tube
GB1060377A (en) Cathode ray tube
GB854943A (en) Low noise electron gun
GB940480A (en) Electron discharge device
GB1502876A (en) Cathode ray tube
GB981743A (en) Improvements in electron guns
GB1336970A (en) Television camera tube
US3772551A (en) Cathode ray tube system
GB2015817A (en) Television camera tube
GB908590A (en) Charged particle gun
GB1403936A (en) Electron guns for use in cathode ray tubes
GB1162460A (en) Electron Beam Scanner Utilizing Labyrinth Structure.
GB1353455A (en) Cathode-ray tube
GB1330448A (en) Television camera tube
GB1271589A (en) Electron gun configuration
GB1191755A (en) Linear Beam Tube with Plural Cathode Beamlets providing a Convergent Electron Stream
GB1302989A (en)
GB1040334A (en) Improvements in or relating to electrostatically focused electron discharge tubes
GB1444062A (en) Camera tubes
GB1174038A (en) Electron Beam Scanning Device
GB855568A (en) Magnetron oscillator

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee