GB1060381A - Focussing electrodes for an image converter tube or the like - Google Patents

Focussing electrodes for an image converter tube or the like

Info

Publication number
GB1060381A
GB1060381A GB4704363A GB4704363A GB1060381A GB 1060381 A GB1060381 A GB 1060381A GB 4704363 A GB4704363 A GB 4704363A GB 4704363 A GB4704363 A GB 4704363A GB 1060381 A GB1060381 A GB 1060381A
Authority
GB
United Kingdom
Prior art keywords
shutters
wall
envelope
sealed
aperture
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
GB4704363A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB1060381A publication Critical patent/GB1060381A/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
    • 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
    • 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
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/501—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electrostatic electron optic system

Landscapes

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

Abstract

1,060,381. Cathode ray tubes; cathode materials and processing. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Nov. 28, 1963 [Dec. 4, 1962]. No. 47043/63. Heading HID. An electrode forming part of a multi-electrode electrostatic focusing system as for instance in an image converter tube having a sealed envelope and a photocathode surface produced by evaporation-depositing of at least one metallic substance after the envelope is sealed, comprises an annular body having a transverse wall 2 with a central aperture 4 and movable shutters to seal the aperture, the shutters comprising a pair of symmetrically disposed members 7 pivoted about axes 8 and having part-circular portions 6. The electrode is inserted in the envelope with the aperture 4 sealed by the shutters and after the photocathode surface has been formed the shutters are opened by shaking or spinning the tube to cause the shutter members 7 to swing apart to their open positions in which they are retained by upstanding ends on spring latch 9. Guide plate 3 assists wall 2 in retaining the shutters in their correct plane. Around wall 2 is a wall 1 having a flange 30, and evaporators are located between this and plate 3. An evaporator for alkali metal consists of container 23 connected to wire 13 along which a current is passed to heat container 23 and evaporate the charge in it. An evaporator for antimony consists of a resistance wire 16 on which is a bead of antimony 31.
GB4704363A 1962-12-04 1963-11-28 Focussing electrodes for an image converter tube or the like Expired GB1060381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR917454A FR1352174A (en) 1962-12-04 1962-12-04 flat electrode for photosensitive device

Publications (1)

Publication Number Publication Date
GB1060381A true GB1060381A (en) 1967-03-01

Family

ID=8792067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4704363A Expired GB1060381A (en) 1962-12-04 1963-11-28 Focussing electrodes for an image converter tube or the like

Country Status (2)

Country Link
FR (1) FR1352174A (en)
GB (1) GB1060381A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149200A (en) * 1983-09-06 1985-06-05 Hamamatsu Photonics Kk Imaging and streaking tubes
WO2003065400A2 (en) * 2002-02-01 2003-08-07 Extreme Devices Incorporated Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149200A (en) * 1983-09-06 1985-06-05 Hamamatsu Photonics Kk Imaging and streaking tubes
WO2003065400A2 (en) * 2002-02-01 2003-08-07 Extreme Devices Incorporated Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube
WO2003065400A3 (en) * 2002-02-01 2003-11-06 Extreme Devices Inc Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube

Also Published As

Publication number Publication date
FR1352174A (en) 1964-02-14

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