US3089956A - X-ray fluorescent screen - Google Patents
X-ray fluorescent screen Download PDFInfo
- Publication number
- US3089956A US3089956A US367167A US36716753A US3089956A US 3089956 A US3089956 A US 3089956A US 367167 A US367167 A US 367167A US 36716753 A US36716753 A US 36716753A US 3089956 A US3089956 A US 3089956A
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- Prior art keywords
- plate member
- foraminated
- layer
- foraminations
- screen
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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
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
-
- 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
Definitions
- the separation between the zinc sulphide particles and the photoelectric particles should be as small as possible.
- this is achieved by forming the body of the screen of a chemically machined glass on which the zinc sulphide is mounted.
- FIG. 1 is a mid-cross-sectional view of one form of image screen embodying the principles of my invention
- the main body of the screen comprises the special glass which is becoming known as chemically machined glass, and is sold by the Corning Glass Company of Corning, New York.
- the image screens to be used in X-ray image intensifiers currently marketed by applicants assignee it may have the form of a segment, six inches in diameter, of the surface of an eleven inch radius sphere.
- a peripheral rim 1 about half an inch wide and 50 mils thick gives strength and rigidity, while a grid of ribs 2 of the same thickness and 2 mils wide, enclosing square sockets 3 which are 63 mils on a side and 48 mils deeps, cross-connects points on this rim.
- the method I am acquainted with at the moment for making such a foraminated glass structure is by etching the sockets with a chemical reagent such as hydrofluoric acid in a spherical segment of the above-descibed glass 50 mils thick.
- a chemical reagent such as hydrofluoric acid
- This etching method is described in detail in Industrial and Engineering Chemistry, vol. 45, page 115, January 1953 and some previous articles, but any other method of producing a rigid structure having sockets of about the same dimensions each with a transverse septum about 2 mils thick of the aforesaid glass is within the scope of my invention.
- the sockets are coated inside on the transvense wall only with a thin layer 4 of aluminum, e.g., by vapor condensation, and the outer face of the glass is coated with a thin layer 5 of a transparent electrical conductor, e.g., by hot-spraying with tin chloride.
- the sockets are then filled with zinc sulphide-silver or other suitable phosphor 6 such as that known under the trade name of Patterson B (sold by du Pont de Nemours, Wilmington, Delaware). This phosphor may comprise particles of about 45 microns average diameter and an amount of 200 to 250 mg. per square centimeter would fill the abovedescribed sockets.
- the remaining face of the sockets should be covered by a metal foil 7 such as aluminum about one mil thick. Adjacent the conductive coating 5 is shown a layer 8 of a suitable photoemissive material such as that disclosed in the above-mentioned Coltman and Mason U.S. Patent 2,523,132.
- an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive material upon said non foraminated surface of said plate member, fluorescent material filling each of said foraminations and a thin metallic member upon said foraminated surface of said plate member, said thin septum having a thickness of less than 10 percent of the thickness of said plate member.
- an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive material upon said non-foraminated surface of said plate member, a layer of photoelectric material upon said layer of transparent conductive material, fluorescent material filling each of said foraminations to obtain a fluorescent image therein, said thin septum being of a thickness to provide a true reproduction of said fluorescent image on said photoelectric layer and a thin metallic member upon said foraminated surface of said screen member.
- an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive ma terial upon said non-foraminated surface of said plate member, a layer of photoelectric material upon said layer of transparent conductive material, fluorescent material filling each of said foraminations, and a thin metallic member upon said foraminated surface of said screen member, said thin septum having a thickness of less than percent of the thickness of said plate member.
- an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the forarn inations therein, a layer of transparent conductive material upon said nonforaminated surface of said plate member, fluorescent material filling each of said foraminations, said foraminations having side wall portions, a reflecting surface lining said side wall portions of said foraminations, and a thin metallic member upon said foraminated surface of said plate member.
- an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive material upon said non-foraminated surface of said plate member, a layer of photoelectric material upon said layer of transparent conductive material, fluorescent material filling each of said foraminations, said foraminations having side wall portions, a reflecting surface lining said side wall portions of said foraminations, and a thin metallic member upon said foraminated surface of said screen member.
- an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of photoelectric material upon the surface of said fluorescent screen member opposite said foraminated surface of said plate member, fluorescent material filling each of said foraminations, said foraminations having side wall portions, a reflecting surface lining said side wall portions of said foraminations, and a thin metallic member upon said foraminated surface of said plate member.
- an input screen comprising a plate member of insulating material having a plurality of foraminations therein, said plate member including a thin transparent septum transverse to said foraminations so that said plate member has a foraminated surface and a non-foraminated surface, a layer of photoelectric material upon said non-foraminated surface and fluorescent material filling each of said foraminations to obtain a fluorescent image therein, said thin transparent septum being of a thickness to provide a true reproduction of said fluorescent image on said photoelectric layer.
- an input screen comprising a plate member of insulating material having a plurality of foraminations therein, said plate member including a thin transparent septum transverse to said foraminations so that said plate member has a foraminated surface and a non-foraminated surface, a layer of photoelectric material upon said non-foraminated surface and fluorescent material filling each of said foraminations, said thin transparent septum providing a barrier of minimum thickness between said photoelectric mateiral and said fluorescent material, said thin septum having a thickness of about two mils.
- An intensifying screen for X-ray registrations comprising a honeycomb-shaped grid, the walls of which are light-reflecting and the apertures of which are filled with a luminescent substance, said apertures being formed in a glass plate made of photographically sensitive glass and the partitions are coated with a light-reflecting metal layer.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Description
May 14, 1963 7 3,089,956
WALTER J. HUSHLEY NOW BY CHANGE OF NAME WALTER JOHN HARPER X-RAY FLUORESCENT SCREEN Filed July 10, 1955 Fig. l.
Photogmissive Conductive (Boating 8 Matenal Material g 2 Photoemissive WITNESSES: INVENTOR Walter J. Hushley.
ATTORNEY United States Patent Ofiice 3,Q89,956 Patented May 14, 1963 3,089,956 X-RAY FLUORESCENT SCREEN Walter J. Hushley, now by change of name Walter John Harper, Pittsburgh, Pa, assignor to Westinghouse Electric Corporation, East Pittsburgh, Pa, a corporation of Pennsylvania Filed July 10, 1953, Ser. No. 367,167 Claims. (Cl. 25tt80) My invention relates to fluorescent screens and in particular relates to a screen comprising both fluorescent material and photoelectric material which is capable of transforming an X-ray or other radiation image into an electron image which is its replica. Such screens are useful in image intensifiers, of which one typical example is to be found in Coltman and Masons U.S. Patent 2,523,132 issued September 19, 1950 and assigned to the assignee of this application.
In image intensifiers of the type just referred to an X- ray beam after passing through a pictured object is incident upon a screen having a thin layer of zinc sulphide separated from a thin layer of photoelectric material by a thin layer of glass. The light generated by the X-rays in the zinc sulphide causes the closely adjacent areas of the photoelectric material to emit electrons, thus forming an electron image which is accelerated electrically into incidence on an electron-phosphor screen where it produces a bright light image in replica of the X-ray distribution.
To attain a true reproduction of the fluorescent image the separation between the zinc sulphide particles and the photoelectric particles should be as small as possible. In my present invention this is achieved by forming the body of the screen of a chemically machined glass on which the zinc sulphide is mounted.
One object of my invention is, accordingly, to provide a new and improved form of optical screen for converting X-ray or other radiation images into electron images.
Another object is to provide an improved type of image screen for electronic image intensifier tubes.
Still another object is to provide an improved structure for mouting fluorescent materials in close contiguity to photoelectrically emissive material.
Other objects of my invention will become apparent upon reading the following description taken in connection with the drawings in which:
FIG. 1 is a mid-cross-sectional view of one form of image screen embodying the principles of my invention;
FIG. 2 is a similar view of another form of image screen in which such principles may be embodied; and
FIG. 3 is a similar view of a modified image screen.
Referring in detail to FIG. 1, the main body of the screen comprises the special glass which is becoming known as chemically machined glass, and is sold by the Corning Glass Company of Corning, New York. For the image screens to be used in X-ray image intensifiers currently marketed by applicants assignee it may have the form of a segment, six inches in diameter, of the surface of an eleven inch radius sphere. A peripheral rim 1 about half an inch wide and 50 mils thick gives strength and rigidity, while a grid of ribs 2 of the same thickness and 2 mils wide, enclosing square sockets 3 which are 63 mils on a side and 48 mils deeps, cross-connects points on this rim. The method I am acquainted with at the moment for making such a foraminated glass structure is by etching the sockets with a chemical reagent such as hydrofluoric acid in a spherical segment of the above-descibed glass 50 mils thick. This etching method is described in detail in Industrial and Engineering Chemistry, vol. 45, page 115, January 1953 and some previous articles, but any other method of producing a rigid structure having sockets of about the same dimensions each with a transverse septum about 2 mils thick of the aforesaid glass is within the scope of my invention.
The sockets are coated inside on the transvense wall only with a thin layer 4 of aluminum, e.g., by vapor condensation, and the outer face of the glass is coated with a thin layer 5 of a transparent electrical conductor, e.g., by hot-spraying with tin chloride. The sockets are then filled with zinc sulphide-silver or other suitable phosphor 6 such as that known under the trade name of Patterson B (sold by du Pont de Nemours, Wilmington, Delaware). This phosphor may comprise particles of about 45 microns average diameter and an amount of 200 to 250 mg. per square centimeter would fill the abovedescribed sockets. The remaining face of the sockets should be covered by a metal foil 7 such as aluminum about one mil thick. Adjacent the conductive coating 5 is shown a layer 8 of a suitable photoemissive material such as that disclosed in the above-mentioned Coltman and Mason U.S. Patent 2,523,132.
FIG. 2 shows another form of screen in accordance with my invention in which the square sockets of the FIG. 1 screen are replaced by square holes passing completely through the glass frame. The dimensions of the rim, side walls, coatings and openings may be the same as in FIG. 1. A separate thin sheet 11 of glass covers the concave face of the screen openings, and its outer face is coated with a transparent conductive layer 5. The holes are filled as in FIG. 1 with the phosphor 6 abovedescribed and their free face covered with the aluminum foil '7 as before. The use of a thin layer of glass between the aluminum layer 7 and the phosphor is also within the contemplation of my invention. Adjacent the conductive coating 5 is shown a layer 8 of a suitable photoemissive material such as that disclosed in the abovementioned Coltman and Mason U.S. Patent 2,523,132.
The holes need not be square but may be of any shape and their size and number may also be varied. FIG. 3 illustrates a modified structure in which the walls of the holes 3 are tapered.
I claim as my invention:
1. In an image amplifier, an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive material upon said non foraminated surface of said plate member, fluorescent material filling each of said foraminations and a thin metallic member upon said foraminated surface of said plate member, said thin septum having a thickness of less than 10 percent of the thickness of said plate member.
2. In an image amplifier, an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive material upon said non-foraminated surface of said plate member, a layer of photoelectric material upon said layer of transparent conductive material, fluorescent material filling each of said foraminations to obtain a fluorescent image therein, said thin septum being of a thickness to provide a true reproduction of said fluorescent image on said photoelectric layer and a thin metallic member upon said foraminated surface of said screen member.
3. In an image amplifier, an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive ma terial upon said non-foraminated surface of said plate member, a layer of photoelectric material upon said layer of transparent conductive material, fluorescent material filling each of said foraminations, and a thin metallic member upon said foraminated surface of said screen member, said thin septum having a thickness of less than percent of the thickness of said plate member.
4. In an image amplifier, an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the forarn inations therein, a layer of transparent conductive material upon said nonforaminated surface of said plate member, fluorescent material filling each of said foraminations, said foraminations having side wall portions, a reflecting surface lining said side wall portions of said foraminations, and a thin metallic member upon said foraminated surface of said plate member.
5. In an image amplifier, an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of transparent conductive material upon said non-foraminated surface of said plate member, a layer of photoelectric material upon said layer of transparent conductive material, fluorescent material filling each of said foraminations, said foraminations having side wall portions, a reflecting surface lining said side wall portions of said foraminations, and a thin metallic member upon said foraminated surface of said screen member.
6. In an image amplifier, an input screen comprising a foraminated plate member of insulating material, said plate member having a foraminated surface and a nonforaminated surface, said plate member including a thin septum of said insulating material transverse to the foraminations therein, a layer of photoelectric material upon the surface of said fluorescent screen member opposite said foraminated surface of said plate member, fluorescent material filling each of said foraminations, said foraminations having side wall portions, a reflecting surface lining said side wall portions of said foraminations, and a thin metallic member upon said foraminated surface of said plate member.
7. In an image amplifier, an input screen comprising a plate member of insulating material having a plurality of foraminations therein, said plate member including a thin transparent septum transverse to said foraminations so that said plate member has a foraminated surface and a non-foraminated surface, a layer of photoelectric material upon said non-foraminated surface and fluorescent material filling each of said foraminations to obtain a fluorescent image therein, said thin transparent septum being of a thickness to provide a true reproduction of said fluorescent image on said photoelectric layer.
8. In an image amplifier, an input screen comprising a plate member of insulating material having a plurality of foraminations therein, said plate member including a thin transparent septum transverse to said foraminations so that said plate member has a foraminated surface and a non-foraminated surface, a layer of photoelectric material upon said non-foraminated surface and fluorescent material filling each of said foraminations, said thin transparent septum providing a barrier of minimum thickness between said photoelectric mateiral and said fluorescent material, said thin septum having a thickness of about two mils.
9. An intensifying screen for X-ray registrations comprising a honeycomb-shaped grid, the walls of which are light-reflecting and the apertures of which are filled with a luminescent substance, said apertures being formed in a glass plate made of photographically sensitive glass and the partitions are coated with a light-reflecting metal layer.
10. An intensifying screen as claimed in claim 9, in which the partitions are tapered on both sides.
References Cited in the file of this patent UNITED STATES PATENTS 1,467,132 Bilstein Sept. 4, 1923 2,029,639 Schlesinger Feb. 4, 1936 2,303,563 Law Dec. 1, 1942 2,324,505 Iams et al July 20, 1943 2,501,376 Breadner et a1 Mar. 21, 1950 2,523,132 Mason et al Sept. 19, 1950 2,555,545 Hunter et al. June 5, 1951 2,567,714 Kaplan Sept. 11, 1951 2,582,822 Evans Jan. 15, 1952 2,583,000 Lytle Jan. 22, 1952 2,606,299 Coltman et al. Aug. 5, 1952 2,660,686 Putnam Nov. 24, 1953 2,689,189 Hushley Sept. 14, 1954 2,705,765 Geer Apr. 5, 1955 2,739,243 Sheldon Mar. 20, 1956 OTHER REFERENCES Fluoroscopic Image Brightening by Electronic Means, Coltman, Radiology, v01. 51, September 1948, pp. 359 366.
Claims (1)
1. IN AN IMAGE AMPLIFIER, AN INPUT SCREEN COMPRISING A FORAMINATED PLATE MEMBER OF INSULATING MATERIAL, SAID PLATE MEMBER HAVING A FORAMINATED SURFACE AND A NONFORAMINATED SURFACE, SAID PLATE MEMBER INCLUDING A THIN SEPTUM OF SAID INSULATING MATERIAL TRANSVERSES TO THE FORAMINATIONS THEREIN, A LAYER OF TRANSPARENT CONDUCTIVE
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US367167A US3089956A (en) | 1953-07-10 | 1953-07-10 | X-ray fluorescent screen |
GB18969/54A GB752283A (en) | 1953-07-10 | 1954-06-29 | Improvements in or relating to fluorescent screens |
FR1103951D FR1103951A (en) | 1953-07-10 | 1954-07-09 | fluoroscopic fluorescent screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US367167A US3089956A (en) | 1953-07-10 | 1953-07-10 | X-ray fluorescent screen |
Publications (1)
Publication Number | Publication Date |
---|---|
US3089956A true US3089956A (en) | 1963-05-14 |
Family
ID=23446165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US367167A Expired - Lifetime US3089956A (en) | 1953-07-10 | 1953-07-10 | X-ray fluorescent screen |
Country Status (3)
Country | Link |
---|---|
US (1) | US3089956A (en) |
FR (1) | FR1103951A (en) |
GB (1) | GB752283A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3291706A (en) * | 1963-10-08 | 1966-12-13 | Radames K H Gebel | Method of making an optical fiber phosphor screen |
US3344276A (en) * | 1964-03-30 | 1967-09-26 | Kaiser Aerospace & Electronics | Radiographic screen having channels filled with a material which emits photons when energized by gamma or x-rays |
US3482104A (en) * | 1965-05-24 | 1969-12-02 | Jack Finkle | System for televising radiant energy images employing image transducer device with radiant energy image responsive photocathode |
US3717764A (en) * | 1969-03-07 | 1973-02-20 | Fuji Photo Film Co Ltd | Intensifying screen for radiograph use |
US3753714A (en) * | 1969-11-21 | 1973-08-21 | Fuji Photo Film Co Ltd | Image formation by radiation and intensification |
US4096381A (en) * | 1975-05-30 | 1978-06-20 | Brown Sr Robert L | Electron image detection system |
US4208577A (en) * | 1977-01-28 | 1980-06-17 | Diagnostic Information, Inc. | X-ray tube having scintillator-photocathode segments aligned with phosphor segments of its display screen |
US4209705A (en) * | 1977-03-14 | 1980-06-24 | Tokyo Shibaura Electric Co, Ltd. | Image intensifier whose input screen phosphor layer is divided into light guiding mosaic blocks by metal protrusions |
US4317037A (en) * | 1978-06-09 | 1982-02-23 | Hitachi, Ltd. | Radiation detection apparatus |
US4339659A (en) * | 1980-10-20 | 1982-07-13 | International Telephone And Telegraph Corporation | Image converter having serial arrangement of microchannel plate, input electrode, phosphor, and photocathode |
US4415810A (en) * | 1979-07-05 | 1983-11-15 | Brown Sr Robert L | Device for imaging penetrating radiation |
US4778565A (en) * | 1986-03-10 | 1988-10-18 | Picker International, Inc. | Method of forming panel type radiation image intensifier |
US4855589A (en) * | 1986-03-10 | 1989-08-08 | Picker International, Inc. | Panel type radiation image intensifier |
US4935617A (en) * | 1988-03-04 | 1990-06-19 | Kabushiki Kaisha Toshiba | X-ray image intensifier and method of manufacturing the same |
US5338926A (en) * | 1991-05-24 | 1994-08-16 | Kabushiki Kaisha Toshiba | X-ray imaging tube having a light-absorbing property |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1127469B (en) * | 1960-07-28 | 1962-04-12 | Owensi Corning Fiberglasi Corp | Fluorescent panel |
FR2535896A1 (en) * | 1982-11-10 | 1984-05-11 | Labo Electronique Physique | IMPROVEMENT TO THE LUMINOPHORE SCREENS OF AN ELECTRONIC TUBE OF THE CATHODE TUBE GENUINE, METHOD FOR MANUFACTURING SUCH A PERFECTED SCREEN AND TUBE IN PARTICULAR FOR PROJECTING TELEVISION IMAGES PROVIDED WITH SUCH SCREEN |
US4730107A (en) * | 1986-03-10 | 1988-03-08 | Picker International, Inc. | Panel type radiation image intensifier |
FR2634562B1 (en) * | 1988-07-22 | 1990-09-07 | Thomson Csf | METHOD FOR MANUFACTURING A SCINTILLATOR AND SCINTILLATOR THUS OBTAINED |
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US1467132A (en) * | 1922-01-17 | 1923-09-04 | United States Radium Corp | Application of luminous compounds |
US2029639A (en) * | 1931-12-24 | 1936-02-04 | Schlesinger Kurt | Braun tube |
US2303563A (en) * | 1941-05-09 | 1942-12-01 | Rca Corp | Cathode ray tube and luminescent screen |
US2324505A (en) * | 1940-11-28 | 1943-07-20 | Rca Corp | Television transmitting tube and electrode structure |
US2501376A (en) * | 1944-12-21 | 1950-03-21 | Gen Electric | Electric discharge lamp |
US2523132A (en) * | 1949-08-10 | 1950-09-19 | Westinghouse Electric Corp | Photosensitive apparatus |
US2555545A (en) * | 1947-08-28 | 1951-06-05 | Westinghouse Electric Corp | Image intensifier |
US2567714A (en) * | 1950-12-21 | 1951-09-11 | Sightmaster Corp | Cathode-ray tube |
US2582822A (en) * | 1948-12-04 | 1952-01-15 | Rca Corp | Cathode-ray tube with aluminized screen |
US2583000A (en) * | 1946-05-14 | 1952-01-22 | Pittsburgh Plate Glass Co | Transparent conducting films |
US2606299A (en) * | 1950-03-11 | 1952-08-05 | Westinghouse Electric Corp | Image intensifier tube |
US2660686A (en) * | 1948-06-19 | 1953-11-24 | Westinghouse Electric Corp | Fluorescent screen |
US2689189A (en) * | 1951-12-05 | 1954-09-14 | Westinghouse Electric Corp | X-ray fluorescent screen |
US2705765A (en) * | 1950-04-03 | 1955-04-05 | Geer Charles Willard | Single gun color television receiving tube and screen structure |
US2739243A (en) * | 1953-01-08 | 1956-03-20 | Sheldon Edward Emanuel | Composite photosensitive screens |
-
1953
- 1953-07-10 US US367167A patent/US3089956A/en not_active Expired - Lifetime
-
1954
- 1954-06-29 GB GB18969/54A patent/GB752283A/en not_active Expired
- 1954-07-09 FR FR1103951D patent/FR1103951A/en not_active Expired
Patent Citations (15)
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US1467132A (en) * | 1922-01-17 | 1923-09-04 | United States Radium Corp | Application of luminous compounds |
US2029639A (en) * | 1931-12-24 | 1936-02-04 | Schlesinger Kurt | Braun tube |
US2324505A (en) * | 1940-11-28 | 1943-07-20 | Rca Corp | Television transmitting tube and electrode structure |
US2303563A (en) * | 1941-05-09 | 1942-12-01 | Rca Corp | Cathode ray tube and luminescent screen |
US2501376A (en) * | 1944-12-21 | 1950-03-21 | Gen Electric | Electric discharge lamp |
US2583000A (en) * | 1946-05-14 | 1952-01-22 | Pittsburgh Plate Glass Co | Transparent conducting films |
US2555545A (en) * | 1947-08-28 | 1951-06-05 | Westinghouse Electric Corp | Image intensifier |
US2660686A (en) * | 1948-06-19 | 1953-11-24 | Westinghouse Electric Corp | Fluorescent screen |
US2582822A (en) * | 1948-12-04 | 1952-01-15 | Rca Corp | Cathode-ray tube with aluminized screen |
US2523132A (en) * | 1949-08-10 | 1950-09-19 | Westinghouse Electric Corp | Photosensitive apparatus |
US2606299A (en) * | 1950-03-11 | 1952-08-05 | Westinghouse Electric Corp | Image intensifier tube |
US2705765A (en) * | 1950-04-03 | 1955-04-05 | Geer Charles Willard | Single gun color television receiving tube and screen structure |
US2567714A (en) * | 1950-12-21 | 1951-09-11 | Sightmaster Corp | Cathode-ray tube |
US2689189A (en) * | 1951-12-05 | 1954-09-14 | Westinghouse Electric Corp | X-ray fluorescent screen |
US2739243A (en) * | 1953-01-08 | 1956-03-20 | Sheldon Edward Emanuel | Composite photosensitive screens |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3291706A (en) * | 1963-10-08 | 1966-12-13 | Radames K H Gebel | Method of making an optical fiber phosphor screen |
US3344276A (en) * | 1964-03-30 | 1967-09-26 | Kaiser Aerospace & Electronics | Radiographic screen having channels filled with a material which emits photons when energized by gamma or x-rays |
US3482104A (en) * | 1965-05-24 | 1969-12-02 | Jack Finkle | System for televising radiant energy images employing image transducer device with radiant energy image responsive photocathode |
US3717764A (en) * | 1969-03-07 | 1973-02-20 | Fuji Photo Film Co Ltd | Intensifying screen for radiograph use |
US3753714A (en) * | 1969-11-21 | 1973-08-21 | Fuji Photo Film Co Ltd | Image formation by radiation and intensification |
US4096381A (en) * | 1975-05-30 | 1978-06-20 | Brown Sr Robert L | Electron image detection system |
US4208577A (en) * | 1977-01-28 | 1980-06-17 | Diagnostic Information, Inc. | X-ray tube having scintillator-photocathode segments aligned with phosphor segments of its display screen |
US4209705A (en) * | 1977-03-14 | 1980-06-24 | Tokyo Shibaura Electric Co, Ltd. | Image intensifier whose input screen phosphor layer is divided into light guiding mosaic blocks by metal protrusions |
US4317037A (en) * | 1978-06-09 | 1982-02-23 | Hitachi, Ltd. | Radiation detection apparatus |
US4415810A (en) * | 1979-07-05 | 1983-11-15 | Brown Sr Robert L | Device for imaging penetrating radiation |
US4339659A (en) * | 1980-10-20 | 1982-07-13 | International Telephone And Telegraph Corporation | Image converter having serial arrangement of microchannel plate, input electrode, phosphor, and photocathode |
US4778565A (en) * | 1986-03-10 | 1988-10-18 | Picker International, Inc. | Method of forming panel type radiation image intensifier |
US4855589A (en) * | 1986-03-10 | 1989-08-08 | Picker International, Inc. | Panel type radiation image intensifier |
US4935617A (en) * | 1988-03-04 | 1990-06-19 | Kabushiki Kaisha Toshiba | X-ray image intensifier and method of manufacturing the same |
US5338926A (en) * | 1991-05-24 | 1994-08-16 | Kabushiki Kaisha Toshiba | X-ray imaging tube having a light-absorbing property |
US5445846A (en) * | 1991-05-24 | 1995-08-29 | Kabushiki Kaisha Toshiba | X-ray imaging tube |
Also Published As
Publication number | Publication date |
---|---|
FR1103951A (en) | 1955-11-15 |
GB752283A (en) | 1956-07-11 |
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