GB695406A - Improvements in or relating to electric discharge tubes for intensifying fluorescentimages produced with the use of x-rays - Google Patents

Improvements in or relating to electric discharge tubes for intensifying fluorescentimages produced with the use of x-rays

Info

Publication number
GB695406A
GB695406A GB6893/51A GB689351A GB695406A GB 695406 A GB695406 A GB 695406A GB 6893/51 A GB6893/51 A GB 6893/51A GB 689351 A GB689351 A GB 689351A GB 695406 A GB695406 A GB 695406A
Authority
GB
United Kingdom
Prior art keywords
plates
rays
layer
cathode
degassed
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
GB6893/51A
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 Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB695406A publication Critical patent/GB695406A/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
    • H01J29/10—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
    • 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
    • H01J29/18—Luminescent screens
    • H01J29/24—Supports for luminescent material
    • 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
    • H01J31/503—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electromagnetic electron-optic system

Abstract

695,406. Cathode-ray tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 22, 1951 [March 27, 1950], No. 6893/51. Class 39(i) An image intensifier for X-ray images has the layer which is rendered luminescent by the X-rays enclosed between two plates. The plates may be of mica 50 microns thick or of glass, and that adjacent the X-ray source may be of beryllium. The distance between the plates is 0.5-0.7 mm. As shown in Fig. 2 the plates 10, 11 enclosing a substantial layer of luminescent material 12 and are held by two telescoped metal frames 13, 14 of aluminium and an intermediate piece 17 all of which are spot-welded in position. In a modification, a tongue on the outside member 13 projects into a notch on the inner member. These assemblies are degassed in the discharge tube by local heating. In a further modification, Fig. 4 (not shown) the plates are enclosed by a double bent metallic frame 2 which is hermetically sealed with glass-enamel powder after being degassed and before being arranged within the discharge tube. A photo-electric cathode is provided on the surface of plate 10, a preliminary layer of iridium or chromium being provided. The photo-electric cathode may be on a separate support.
GB6893/51A 1950-03-27 1951-03-22 Improvements in or relating to electric discharge tubes for intensifying fluorescentimages produced with the use of x-rays Expired GB695406A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL695406X 1950-03-27

Publications (1)

Publication Number Publication Date
GB695406A true GB695406A (en) 1953-08-12

Family

ID=19808861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6893/51A Expired GB695406A (en) 1950-03-27 1951-03-22 Improvements in or relating to electric discharge tubes for intensifying fluorescentimages produced with the use of x-rays

Country Status (5)

Country Link
US (1) US2748304A (en)
BE (1) BE502161A (en)
DE (1) DE934358C (en)
FR (1) FR1034370A (en)
GB (1) GB695406A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877371A (en) * 1955-08-16 1959-03-10 Itt Information display device
US2929950A (en) * 1955-12-30 1960-03-22 Electronique & Automatisme Sa Electroluminescence devices
US2972076A (en) * 1956-02-14 1961-02-14 Philips Corp Solid-state image intensifier
US2994773A (en) * 1956-02-20 1961-08-01 Westinghouse Electric Corp Radiation detector
US2961546A (en) * 1956-07-19 1960-11-22 Brunsviga Maschinenwerke Ag Apparatus for electrically transmitting decade counter tube results
US3300669A (en) * 1963-09-16 1967-01-24 Machlett Lab Inc X-ray vidicon having a target and window assembly with improved thermal conductivity

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1401006A (en) * 1921-03-18 1921-12-20 Henry A Soderberg Indicator
GB448480A (en) * 1935-03-11 1936-06-09 Joseph Staudenraus An improved roentgen fluoroscope for use in making dental investigations
DE694634C (en) * 1937-03-26 1940-08-05 Aeg Method for the investigation of material bodies with slow neutrons
GB499869A (en) * 1937-06-26 1939-01-26 Hans Gerhard Lubszynski Improvements in or relating to electron discharge devices
US2344042A (en) * 1940-03-15 1944-03-14 Kallmann Hartmut Israel Neutron image converter
US2555423A (en) * 1947-04-16 1951-06-05 Sheldon Edward Emanuel Image intensifying tube
US2523132A (en) * 1949-08-10 1950-09-19 Westinghouse Electric Corp Photosensitive apparatus
US2667585A (en) * 1951-02-15 1954-01-26 Hartford Nat Bank & Trust Co Device for producing screening images of body sections
US2663801A (en) * 1951-10-08 1953-12-22 Slavin Morris Transmission fluorimeter

Also Published As

Publication number Publication date
DE934358C (en) 1955-10-20
BE502161A (en)
US2748304A (en) 1956-05-29
FR1034370A (en) 1953-07-22

Similar Documents

Publication Publication Date Title
GB1250425A (en)
GB752283A (en) Improvements in or relating to fluorescent screens
US2665391A (en) X-ray tube having a mica window
JPS6340351B2 (en)
GB415411A (en) Improvements in high vacuum cathode ray tubes
GB695406A (en) Improvements in or relating to electric discharge tubes for intensifying fluorescentimages produced with the use of x-rays
US2291406A (en) Cathode ray tube with X-ray absorbing coating
US4104516A (en) Direct view, panel type x-ray image intensifier tube
GB1175599A (en) Improvements in or relating to Image Intensifiers and the like
GB431246A (en) Improvements in or relating to braun tubes
US2953702A (en) Ionisation chamber for radiation measurements
GB802960A (en) Image tube
GB1504594A (en) X-ray tube
GB1321470A (en) Electron optics for a minifying image tube
GB1449930A (en) Intensifier radiographic imaging system
GB237580A (en) Improvements in or relating to x-ray tubes
GB502596A (en) Improvements in or relating to x-ray tubes
GB469079A (en) Improvements in or relating to electron discharge devices comprising photo-electrically-active electrodes
US2110604A (en) Double focus X-ray tube
US2334516A (en) Cathode-ray tube
GB548337A (en) Improvements in photo-sensitive electrodes
GB442724A (en) Braun tube
GB299098A (en) Improvements in or relating to incandescent-cathode discharge tubes
GB472240A (en) Improvements in cathode ray tubes
GB1294604A (en) Improvements in or relating to evacuated electron discharge tubes