GB1073161A - Improvements in image-converter tubes - Google Patents

Improvements in image-converter tubes

Info

Publication number
GB1073161A
GB1073161A GB1045/64A GB104564A GB1073161A GB 1073161 A GB1073161 A GB 1073161A GB 1045/64 A GB1045/64 A GB 1045/64A GB 104564 A GB104564 A GB 104564A GB 1073161 A GB1073161 A GB 1073161A
Authority
GB
United Kingdom
Prior art keywords
envelope
screen
image converter
shield
sealed
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
GB1045/64A
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 GB1073161A publication Critical patent/GB1073161A/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
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • 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
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
    • H01J29/385—Photocathodes comprising a layer which modified the wave length of impinging radiation
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00—Cathode ray tubes or electron beam tubes
    • H01J2231/50—Imaging and conversion tubes
    • H01J2231/50005—Imaging and conversion tubes characterised by form of illumination
    • H01J2231/5001—Photons
    • H01J2231/50031—High energy photons
    • H01J2231/50036—X-rays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00—Cathode ray tubes or electron beam tubes
    • H01J2231/50—Imaging and conversion tubes
    • H01J2231/50057—Imaging and conversion tubes characterised by form of output stage
    • H01J2231/50063—Optical

Landscapes

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

Abstract

1,073,161. Image converter tubes. COMPAGNIE FRANCAISE THOMSONHOUSTON. Jan. 9, 1964 [Jan. 16, 1963], No. 1045/64. Heading HID. In an image converter tube, the image-forming output screen 17, Fig. 2, is near to, but spaced from, one end of the envelope 27 and the space therebetween is sealed off from the remainder of the envelope, to prevent ingress of foreign particles, by an annular dust-shield 23 in sealing engagement with the periphery of the screen and with the envelope. As shown, the screen is supported by a metallic annulus 20 sealed to one end of shield 23 and to a retainer 19 provided with a spring washer 22, the annulus 20 being peripherally supported from the envelope. The other end 26 of shield 23 is resilient so as to take up manufacturing tolerances. Foreign particles may be present in the tube due to dust during manufacture, electrode-soldering operations, vapour deposition of the photo-cathode layer 3, Fig. 1, and particles stripped from the luminescent input screen 2 of an X-ray image converter. The latter particles may be trapped by means of an X-ray transparent protecting sheet 7 provided over the input screen 1-3 with a strip of aluminium foil 10 sealed between the supporting flanges 8, 12. The image converter tube may be an X-ray image intensifier of the kind described in Specifications 1,060,381 and 1,060,382.
GB1045/64A 1963-01-16 1964-01-09 Improvements in image-converter tubes Expired GB1073161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR921573A FR1388626A (en) 1963-01-16 1963-01-16 Improvements to electronic picture tubes

Publications (1)

Publication Number Publication Date
GB1073161A true GB1073161A (en) 1967-06-21

Family

ID=8794803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1045/64A Expired GB1073161A (en) 1963-01-16 1964-01-09 Improvements in image-converter tubes

Country Status (5)

Country Link
US (1) US3304455A (en)
DE (1) DE1889093U (en)
FR (1) FR1388626A (en)
GB (1) GB1073161A (en)
NL (1) NL302993A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135949A1 (en) * 1983-07-22 1985-04-03 Koninklijke Philips Electronics N.V. Electron image tube having a trapping space for loose particles

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1503533A (en) * 1966-01-18 1967-12-01 Thomson Houston Comp Francaise Improvements to luminance amplifier tubes
FR1477735A (en) * 1966-03-11 1967-04-21 Thomson Houston Comp Francaise Improvements to photosensitive electron tubes, in particular to luminance amplifier tubes
US4002941A (en) * 1966-10-27 1977-01-11 Rca Corporation Shadow mask cathode ray tube shield
NL7508791A (en) * 1975-07-23 1977-01-25 Optische Ind De Oude Delft Nv IMAGE AMPLIFIER TUBE OF THE PROXIMITY FOCUS TYPE.
GB1528679A (en) * 1975-12-10 1978-10-18 Bosch Gmbh Robert Image converter or intensifier device
US4100445A (en) * 1976-03-15 1978-07-11 The Machlett Laboratories, Inc. Image output screen comprising juxtaposed doped alkali-halide crystalline rods
NL178286C (en) * 1977-03-03 1986-02-17 Philips Nv IMAGE AMPLIFIER TUBE IN A SUSPENSION ENCLOSURE.
NL177160C (en) * 1977-10-24 1985-08-01 Philips Nv ROENTGEN IMAGE AMPLIFIER TUBE.
US9734977B2 (en) * 2015-07-16 2017-08-15 Intevac, Inc. Image intensifier with indexed compliant anode assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418780A (en) * 1942-11-28 1947-04-08 Rca Corp Alkali halide target with contrasting colors
US2640162A (en) * 1947-05-16 1953-05-26 Bell Telephone Labor Inc Electronic transmission system
US3026437A (en) * 1958-10-20 1962-03-20 Rauland Corp Electron discharge device
NL236730A (en) * 1958-03-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135949A1 (en) * 1983-07-22 1985-04-03 Koninklijke Philips Electronics N.V. Electron image tube having a trapping space for loose particles

Also Published As

Publication number Publication date
NL302993A (en)
FR1388626A (en) 1965-02-12
US3304455A (en) 1967-02-14
DE1889093U (en) 1964-03-12

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