US3794874A - Image transformer tube with movable phosphor screen - Google Patents

Image transformer tube with movable phosphor screen Download PDF

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Publication number
US3794874A
US3794874A US00220745A US3794874DA US3794874A US 3794874 A US3794874 A US 3794874A US 00220745 A US00220745 A US 00220745A US 3794874D A US3794874D A US 3794874DA US 3794874 A US3794874 A US 3794874A
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US
United States
Prior art keywords
ring
anode
window
rings
cathode
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Expired - Lifetime
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US00220745A
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English (en)
Inventor
H Mulder
J Houtkamp
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.)
Nv Optische Ind De Ouda Delft nl
OPTISCHE IND DE OUDA DELFT NV
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OPTISCHE IND DE OUDA DELFT NV
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
    • C07C45/70—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction with functional groups containing oxygen only in singly bound form
    • C07C45/71—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction with functional groups containing oxygen only in singly bound form being hydroxy groups
    • 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

Definitions

  • the invention has reference to a diode image intensifier or image transformer tube.
  • Image tubes of this kind have only two electrodes, the one of which has a photo cathode potential and the other an anode potential.
  • Their advantage lies in that they can both be supplied by a simple high tension apparatus. This apparatus need only supply one tension and need not be stabilized, as variations in tension do not influence its focusmg.
  • At least one spare electrode is inserted in the case of minifications of more than two times, this being the focusing electrode, the potential of which can be adjusted separately, if so desired.
  • the invention now seeks to provide a diode image tube wherein the harmful influence of deviations in the geometry of the electrodes may be compensated for on the tubes completion.
  • a diode image intensifier or image transformer part of the tubes wall between the photo cathode window and the anode window being composed of one or more metal rings vacuum tight interconnected, at least one of said metal rings has to this end a profiled in axial direction elastically deformable zone by means of which the distance between the cathode window and the anode window may be varied.
  • FIG. 1 shows a longitudinal section of the first embodiment of the tube
  • FIG. 2 shows a partial longitudinal section of a second embodiment.
  • number 1 is the input window of the diode.
  • the latter supportsthe photo cathode 2.
  • the output window 3 supports the anode screen 4.
  • the wall of the tube is formed by the metal rings 5, 6 which have the photo cathode potential,by the metal rings 7, 8, 9 having the anode potential, and by the tube shaped insulator interconnecting rings 6 and 8.
  • the metal rings may, for example, be composed of a suitable iron nickel cobalt alloy, and vacuum tight welded together.
  • the glass windows 1 and 3 and the glass insulator 10 are furthermore vacuum tight fused with the'metal parts.
  • Ring 7 supporting the anode window also supports a truncated conical electrode 11.
  • This electrode tube having the same potential as anode screen 4'constitutes together with'the electrode 6 (on photo cathode potential) and photo cathode 2 itself, .the electronic optical system.
  • the metal ring 8 is made in the shape of a pair of bellows, and therefore easily elastically deformable in axial direction. Wh en the tube is evacuated the anode window 3 is sucked inwards part of the way. The geometry is selected such that the anode screen will with some certainty come to lie to the left of the plane of best definition.
  • a ring 12 with a fine external screw thread is soldered to one end of the bellows 8.
  • a ring shaped adjusting nut 13 fits onto the latter which is provided with a milling 14. When screwed on the nut will touch the raised collar 15 of ring 9. If nut 13 is thereupon tightened, window 3 together with anode 11 will move outwards. This must be continued until the best in-focus position is found. Normally this will only require small adjustments from 0.1 to 0.5 millimeter, especially where the reducing diodes are concerned which have a most critical position of the focusing plane.
  • FIG. 2 shows a variation, only the anode section of it being given for simplicitys sake.
  • the anode window 16 is fused with a stepped ring 17.
  • the latter is welded to a second ring 18 the conical anode 20 on the one side, and having a connection with the insulator 19 on the other side.
  • Zone 21 of ring 17 is positioned in a plane perpendicular to the tubes axis and is provided with a rotational symmetric corrugated profile causing this part to act like a membrane in the direction of the axisfairly easily deformable.
  • a ring 22 is welded to the centre part of ring 17, ring 22 having a fine external screw thread running part of its length.
  • the ring 22 cooperates with a saucer shaped nut 23, its rim bearing on a rim fitted around ring 17 in order to move window 16 outwards.
  • Anode 20 does not travel along in this case, so the electronic optical system does not vary, only the screens surface is moved.
  • a diode intensifier or image transformer tube comprising an evacuated, air-tight, axially elongated housing comprising a cylindrical metallic cathode support ring having a window seat at one end thereof, a window mounted in air-tight relationship in said seat, a photocathode supported on the inner face of said window within said housing, a cylindrical insulating ring having one end secured in air-tight connection to the end of said cathode support ring remote from said window, a metallic cylindrical anode support ring having one end secured in air-tight relation to the other end of said insulator ring, said cathode and anode support rings being conductive and connected to sources of cathode and anode potential, respectively, a third metal ring in said housing within said anode support ring, all of said rings having their axes coaxially disposed, a bellows assembly flexible in the direction of the axis of said rings interposed between said anode ring and said third ring, said bellows assembly

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
US00220745A 1971-02-08 1972-01-26 Image transformer tube with movable phosphor screen Expired - Lifetime US3794874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL717101610A NL147577B (nl) 1971-02-08 1971-02-08 Diode-beeldversterker- of beeldtransformatorbuis.

Publications (1)

Publication Number Publication Date
US3794874A true US3794874A (en) 1974-02-26

Family

ID=19812426

Family Applications (1)

Application Number Title Priority Date Filing Date
US00220745A Expired - Lifetime US3794874A (en) 1971-02-08 1972-01-26 Image transformer tube with movable phosphor screen

Country Status (7)

Country Link
US (1) US3794874A (en:Method)
CH (1) CH528145A (en:Method)
DE (1) DE2203853C3 (en:Method)
FR (1) FR2124289B1 (en:Method)
GB (1) GB1339862A (en:Method)
IT (1) IT949007B (en:Method)
NL (1) NL147577B (en:Method)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894258A (en) * 1973-06-13 1975-07-08 Rca Corp Proximity image tube with bellows focussing structure
US4177400A (en) * 1978-03-27 1979-12-04 Advent Corporation Projection cathode ray tube having target angularly and longitudinally adjustable to tube axis
US20170179186A1 (en) * 2015-12-17 2017-06-22 General Electric Company Radiation detector for use as an image intensifier

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2167519A (en) * 1938-01-08 1939-07-25 Western Electric Co Electron discharge device
US2437418A (en) * 1945-05-11 1948-03-09 Farnsworth Res Corp Television image tube
US2474280A (en) * 1946-04-22 1949-06-28 Rothstein Jerome Piezometric thermionic tube
US2512146A (en) * 1946-10-03 1950-06-20 Westinghouse Electric Corp Photoelectric device
US2586304A (en) * 1948-06-12 1952-02-19 Westinghouse Electric Corp Protection of phosphors from attack by alkali vapors
US3244000A (en) * 1960-12-20 1966-04-05 Systems Res Lab Inc Ceramic diode pressure transducer and system
US3303372A (en) * 1964-08-20 1967-02-07 Dunlee Corp X-ray generator with a knife edged cold cathode emitter
US3379922A (en) * 1965-04-07 1968-04-23 Sperry Rand Corp Tunable coupled cavity extended interaction electronic tube having deformable end wall

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2167519A (en) * 1938-01-08 1939-07-25 Western Electric Co Electron discharge device
US2437418A (en) * 1945-05-11 1948-03-09 Farnsworth Res Corp Television image tube
US2474280A (en) * 1946-04-22 1949-06-28 Rothstein Jerome Piezometric thermionic tube
US2512146A (en) * 1946-10-03 1950-06-20 Westinghouse Electric Corp Photoelectric device
US2586304A (en) * 1948-06-12 1952-02-19 Westinghouse Electric Corp Protection of phosphors from attack by alkali vapors
US3244000A (en) * 1960-12-20 1966-04-05 Systems Res Lab Inc Ceramic diode pressure transducer and system
US3303372A (en) * 1964-08-20 1967-02-07 Dunlee Corp X-ray generator with a knife edged cold cathode emitter
US3379922A (en) * 1965-04-07 1968-04-23 Sperry Rand Corp Tunable coupled cavity extended interaction electronic tube having deformable end wall

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894258A (en) * 1973-06-13 1975-07-08 Rca Corp Proximity image tube with bellows focussing structure
US4177400A (en) * 1978-03-27 1979-12-04 Advent Corporation Projection cathode ray tube having target angularly and longitudinally adjustable to tube axis
US20170179186A1 (en) * 2015-12-17 2017-06-22 General Electric Company Radiation detector for use as an image intensifier
US10121817B2 (en) * 2015-12-17 2018-11-06 General Electric Company Radiation detector for use as an image intensifier

Also Published As

Publication number Publication date
CH528145A (de) 1972-09-15
GB1339862A (en) 1973-12-05
FR2124289B1 (en:Method) 1978-03-03
NL7101610A (en:Method) 1972-08-10
IT949007B (it) 1973-06-11
DE2203853B2 (de) 1973-03-01
DE2203853C3 (de) 1975-12-04
FR2124289A1 (en:Method) 1972-09-22
DE2203853A1 (de) 1972-08-24
NL147577B (nl) 1975-10-15

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