GB1449930A - Intensifier radiographic imaging system - Google Patents

Intensifier radiographic imaging system

Info

Publication number
GB1449930A
GB1449930A GB848874A GB848874A GB1449930A GB 1449930 A GB1449930 A GB 1449930A GB 848874 A GB848874 A GB 848874A GB 848874 A GB848874 A GB 848874A GB 1449930 A GB1449930 A GB 1449930A
Authority
GB
United Kingdom
Prior art keywords
film
tube
faceplate
holder
sleeve
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
GB848874A
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.)
Machlett Laboratories Inc
Original Assignee
Machlett Laboratories Inc
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 Machlett Laboratories Inc filed Critical Machlett Laboratories Inc
Publication of GB1449930A publication Critical patent/GB1449930A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Abstract

1449930 Television MACHLETT LABORATORIES Inc 25 Feb 1974 [5 March 1973] 8488/74 Heading H4F [Also in Divisions G2 and H1] A radiographic intensifier system includes an image intensifier tube and a control circuit for the tube focusing means having two settings for focusing the image on to larger or smaller portions of the screen, and a photo-film holder movably mounted on the outside of the tube for movement between a first position in which the film in the holder is in front of the faceplate and a second position in which a film in the holder is not in front of the faceplate and may be viewed directly (e.g. by a TV camera tube 90). The expanded image provides increased resolution. Dimensions, voltages, phosphor and photocathode materials are given. Tube 14 includes skirt 36 shaping the field and shielding sleeve 18-cylinder 20 joint, metallization 40, grids 44 and 54 in the dielectric supports 52, 64, decelerators 66 and 72, faceplate 80 preferably with planar inner and outer surfaces and side by side fibres, phosphor layer 82 preferably directed on the inner side of plate 80 and reflector layer 84 (e.g. Al). The film holder (also Figs. 6 and 7, not shown) has on Al frame 100 with a slot for receiving cassette (118) with slidable cover (122) and film (120). Cassette (118) is moved (e.g. by an electrical mechanism) on tracks 114, 116 and cover (122) may be moved by electronically operated arm (124), while solenoids (126) with core ends press the film against the faceplate, against the action of springs (128). Figs. 2 and 3 (not shown) indicate typical potentials for the two modes and electrode 66 more negative than grid 72 focuses the outer image portions in the same plane as the central portions. Tube 14 also includes cathode sleeve 18 of KOVAR (Trade Mark), terminal flange 19, exhaust tubulation 21, KOVAR anode sleeve 22 with terminal flange 23, sleeve 24 welded to terminal 19 and scaled to membrane faceplate 26 supporting phosphor layer 28 and photocathode 30 with optical barrier film 32 (e.g. aluminium oxide).
GB848874A 1973-03-05 1974-02-25 Intensifier radiographic imaging system Expired GB1449930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00337817A US3835314A (en) 1973-03-05 1973-03-05 Intensifier radiographic imaging system

Publications (1)

Publication Number Publication Date
GB1449930A true GB1449930A (en) 1976-09-15

Family

ID=23322159

Family Applications (1)

Application Number Title Priority Date Filing Date
GB848874A Expired GB1449930A (en) 1973-03-05 1974-02-25 Intensifier radiographic imaging system

Country Status (5)

Country Link
US (1) US3835314A (en)
JP (2) JPS49121470A (en)
CA (1) CA1011469A (en)
DE (1) DE2410471A1 (en)
GB (1) GB1449930A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101134A (en) * 1982-11-29 1984-06-11 浜松ホトニクス株式会社 Radiation image enlarging apparatus
EP0445324A1 (en) * 1990-03-06 1991-09-11 Siemens Aktiengesellschaft X-ray image intensifier with an electrode system
US5875226A (en) * 1990-11-16 1999-02-23 Hitachi Medical Corporation Digital radiography system having an X-ray image intensifier tube
JP2593360B2 (en) 1990-11-16 1997-03-26 株式会社日立メディコ X-ray equipment
DE4208538C2 (en) * 1992-03-17 1994-01-05 Siemens Ag X-ray image intensifier
DE4208540C2 (en) * 1992-03-17 1994-01-05 Siemens Ag X-ray image intensifier
JP2542471B2 (en) * 1992-03-19 1996-10-09 浜松ホトニクス株式会社 Image tube
JPH07294644A (en) * 1994-04-25 1995-11-10 Shimadzu Corp Two-dimensional radiation detector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB971495A (en) * 1960-10-28 1964-09-30 Mullard Ltd Improvements in and relating to electron-optical image converter tubes
US3229105A (en) * 1962-10-04 1966-01-11 Hermann R Mestwerdt Image intensifier device with mirror on rear surface, photocathode on front surface, and fiber optics in center of rear surface
NL144089C (en) * 1962-12-20 1975-04-15 Philips Nv ELECTRONOPTIC IMAGE AMPLIFIER DEVICE, AS WELL AS ELECTRONOPTIC IMAGE AMPLIFIER TUBE.
US3356851A (en) * 1963-10-22 1967-12-05 Picker X Ray Corp Division Inc Image intensifier tube with separable optical coupler
US3417242A (en) * 1965-09-20 1968-12-17 Machlett Lab Inc Image intensification system comprising remote control means for varying the size of the output image
JPS4915898B1 (en) * 1969-10-03 1974-04-18
JPS4851577A (en) * 1971-10-27 1973-07-19

Also Published As

Publication number Publication date
JPS5550938Y2 (en) 1980-11-27
CA1011469A (en) 1977-05-31
US3835314A (en) 1974-09-10
DE2410471A1 (en) 1974-09-19
JPS53119857U (en) 1978-09-22
JPS49121470A (en) 1974-11-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee