US3492523A - Method of making an image intensifier array and resultant article - Google Patents

Method of making an image intensifier array and resultant article Download PDF

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US3492523A
US3492523A US660142A US66014267A US3492523A US 3492523 A US3492523 A US 3492523A US 660142 A US660142 A US 660142A US 66014267 A US66014267 A US 66014267A US 3492523 A US3492523 A US 3492523A
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sheets
array
sheet
holes
image intensifier
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US660142A
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Hayden M Smith
Robert R Thompson
Bagdasar Deradoorian
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Bendix Corp
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Bendix Corp
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Priority claimed from US23574A external-priority patent/US3128408A/en
Priority claimed from US116189A external-priority patent/US3343025A/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/20—Uniting glass pieces by fusing without substantial reshaping
    • C03B23/203—Uniting glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/10—Non-chemical treatment
    • C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
    • C03B37/15—Re-forming fibres or filaments, i.e. changing their shape with heat application, e.g. for making optical fibres
    • 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
    • H01J29/023—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof secondary-electron emitting electrode arrangements
    • 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
    • H01J31/506—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output tubes using secondary emission effect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/24—Dynodes having potential gradient along their surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/24—Dynodes having potential gradient along their surfaces
    • H01J43/243—Dynodes consisting of a piling-up of channel-type dynode plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina

Definitions

  • a plurality of thin glass sheets compounded with oxides of lead and bismuth, are perforated as by photoetching, the glass sheets are stacked so that the perforations become aligned to form individual channels, and the individual thin sheets are bonded together with sufiicient sheets being used to establish the desired length of the channel.
  • the interior surfaces of the array channels are then hydrogen reduced by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface.
  • an image intensifier or channel multiplier wherein a tube or channel of relatively small diameter in the order of .001 inch is provided on the inside surface with a secondary emissive resistive material. A voltage differential is placed across the tube or channel to accelerate incoming electrons through the channel and also provide current in the resistive coating for supplying electrons that are used in the secondary emission.
  • An array of many of these tubes may be placed together to form a large area electron multiplier.
  • An image intensifier can be made by placing a photocathode at one end of the array for conventing light rays into corresponding electron emission, and providing a phosphor screen at the other end of the array to convert the multiplied electrons into visible radiation.
  • This invention provides a method for constructing an array of such multipliers disclosed in the Goodrich and Wiley patent.
  • a plurality of thin glass sheets compounded with oxides of lead and bismuth, are perforated as by photoetching, the glass sheets are stacked so that the perforations become aligned to form individual channels, and then the individual thin sheets are bonded together with sufficient sheets being used to establish the desired length of the channel.
  • the interior surfaces of the array channels are then hydrogen reduced 3,492,523 Patented Jan. 27, 1970 or otherwise treated to provide the desired resistive characteristics.
  • FIGURE 1 is a plan view of a single sheet having a plurality of holes formed therein;
  • FIGURE 2 is a view in perspective of a partially completed stack of individual glass plates which are perforated and cemented in accordance with this invention.
  • FIGURE 3 is a perspective view of a completed array.
  • FIGURE 1 Shown in FIGURE 1 is a glass sheet or film 20 which is in the order of .005 inch in thickness and may be composed of a mixture of 32 percent lead oxide, 61.3 percent silicon dioxide, 6.2 percent of barium carbonate and .5 of 1 percent bismuth trioxide.
  • a plurality of holes 22 are formed in the sheet with the holes being small in diameter, in the neighborhood of .001 inch, and closely spaced. The spacing between holes in this embodiment is .1 the diameter of a hole.
  • Two guide slots 24, 26 are formed near diagonally opposite corners of the sheet to effect alignment of the sheets as later explained.
  • the holes or perforations 22 may be formed in sheet 20 by a process known as photoetching. In this process a coating which is sensitive to light is placed on sheet 20.
  • the individual glass sheets 20, prepared as previously described with perforations or holes 22, are stacked so that guide slots 24, 26 are aligned, and the stack is placed over guide pins 28, 30, FIGURE 2, so that the slots 24, 26 register with the slide over pins 28 and 30. In this manner all of the perforations or holes 22 become aligned to form the desired channels or tubes.
  • a cement such as Coming Glass Company Pyroceram number 89 or solder glass may be applied to the outer boundaries thereof, to cement together adjacent sheets 20 upon the application of heat sufiicient to fuse the cement or solder glass but not hot enough to melt the sheets 20.
  • the sheets may be fastened together in other suitable ways.
  • one or more conductive sheets 32 may be placed between two of the glass sheets 20.
  • Sheets 32 may be of a metallic material such as a thin aluminum film and may have the holes formed therein in a manner similar to the glass sheets 20.
  • a voltage lead 34 may be connected to the conductive sheet and a voltage applied to provide a gate to prevent the flow of electrons. For example, if a high negative potential is applied to the conductive sheet 32, the flow of electrons will be inhibited.
  • the array is subjected to a reducing procedure.
  • a reducing procedure can be done by heating the array to 325 to 500 degrees centigrade for 8 to 16 hours while flowing one liter per minute of pure hydrogen through the channels of the array. This will provide a resistive surface of the desired characteristics for a particular application of about 100 angstroms units thick.
  • a conductive coating 36 may be put on the sheet at each of the array with a conductive paint such asa gold or silver paint or by vapor depositing the gold or silver or other conductive material at a steep angle on the sheet ends so that the conductive coating will not form on more than a minimum of the tube or channel interiors.
  • a conductive paint such asa gold or silver paint or by vapor depositing the gold or silver or other conductive material at a steep angle on the sheet ends so that the conductive coating will not form on more than a minimum of the tube or channel interiors.
  • leads 38, 40 are attached to the conductive coatings and a voltage source 42 is placed therebetween to provide the necessary accelerating field across each tube and provide current for secondary emission form the resistive surfaces on each tube or channel.
  • a method of making an image intensifier array comprising the steps of forming in a plurality of thin insulative glass sheets containing at least one of the elements lead and bismuth, a plurality of relatively small diameter holes which are spaced apart a distance which is only a fraction of said hole diameters, stacking a plurality of insulative sheets so that each of said insulative sheets is in direct contact with another insulative sheet, aligning the holes of each sheet with the holes in adjacent sheets thereby forming a plurality of tubular passages with the number of said sheets in stacked relation being sufliciently large so that the length to diameter ratio of said tubular passages is relatively large, bonding and sheets together, hydrogen reducing the tubular passages formed in said sheets by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface on the side of said tubular passages.
  • a method of making an image intensifier array comprising the steps of forming in a plurality of thin insulative sheets which are in the order of .550" in thickness a plu-' rality of relatively small diameter holes which are in the order of .001 in diameter and spaced apart a distance which is only a fraction of said hole diameters, stacking a plurality of insulative sheets so that each of said insulative sheets is in direct contact with another insulative sheet, aligning the holes of each sheet with the holes in adjacent sheets thereby forming a plurality of tubular passages, bonding said sheets together, hydrogen reducing the tubular passages formed in said sheets by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface, placing a conductive coating on the faces of the sheet at each end of the array, and establishing an accelerating field across each tubular passage and providing current for secondary emission from the surface of the tubular passages by applying a voltage between the conductive coatings.
  • a method of making an image intensifier array comprising the steps of forming in each of a plurality of thin insulative sheets a plurality of relatively small diameter holes which are spaced apart a distance which is only a fraction of said hole diameters, stacking a plurality of insulative sheets so that each of said insulative sheets is in direct contact with another insulative sheet, said sheets being formed of glass containing one of the elements lead or bismuth, aligning the holes of each sheet with the holes of adjacent sheets thereby forming a plurality of tubular passages with the number of said sheets in stacked relation being sufliciently large so that the length to diameter ratio of said tubular passages is relatively large, bonding said sheets together, hydrogen reducing the tubular passages formed in said sheets by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface, applying a conductive coating on the faces of the sheet at each end of the array, and establishiing an accelerating field across each tubular passage and providing current for secondry emission for the
  • the method of claim 3 further including the steps of placing a conductive layer between two of the insulative sheets, connecting a voltage lead to the conductive layer, and applying a voltage to the voltage lead to gate the flow of electrons through said tubular passages.

Description

Jan. 27, 1970 SMITH ET AL 3,492,523
" METHOD OF MAKING 'AN IMAGE INTENSIFIER ARRAY AND RESULTANT ARTICLE Original Filed June 9, 1961 GUIDE PI'NS STACKS OF ETCHED SHEETS BAGDASAR DERADOORIAN I HAYDEN M. SMITH w BY ROBERT R. THOMPSON ATTORNEY United States Patent US. Cl. 313-105 9 Claims ABSTRACT OF THE DISCLOSURE This invention pertains to a method of manufacturing an image intensifier array and the resultant article. A plurality of thin glass sheets compounded with oxides of lead and bismuth, are perforated as by photoetching, the glass sheets are stacked so that the perforations become aligned to form individual channels, and the individual thin sheets are bonded together with sufiicient sheets being used to establish the desired length of the channel. The interior surfaces of the array channels are then hydrogen reduced by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface.
BACKGROUND AND SUMMARY OF THE DEVELOPMENT This is a continuation of our copending application Ser. N0. 405,020, filed October 14, 1964, which is a continuation of application Ser. No. 116,044, filed June 9, 1961, and entitled Image Intensifier Array, both now abandoned.
In the Goodrich and Wiley patent, an image intensifier or channel multiplier is disclosed wherein a tube or channel of relatively small diameter in the order of .001 inch is provided on the inside surface with a secondary emissive resistive material. A voltage differential is placed across the tube or channel to accelerate incoming electrons through the channel and also provide current in the resistive coating for supplying electrons that are used in the secondary emission. An array of many of these tubes may be placed together to form a large area electron multiplier. An image intensifier can be made by placing a photocathode at one end of the array for conventing light rays into corresponding electron emission, and providing a phosphor screen at the other end of the array to convert the multiplied electrons into visible radiation.
This invention provides a method for constructing an array of such multipliers disclosed in the Goodrich and Wiley patent. In this invention a plurality of thin glass sheets compounded with oxides of lead and bismuth, are perforated as by photoetching, the glass sheets are stacked so that the perforations become aligned to form individual channels, and then the individual thin sheets are bonded together with sufficient sheets being used to establish the desired length of the channel.
It is therefore an object of this invention to form an array of small diameter individual tubes or channels which have a secondary emissive resistive surface on the interior thereof, which comprises the steps of perforating a plurality of thin glass sheets which contain compounds to make the sheets conductive to a desired degree, and stracking and bonding a sutficient number of sheets together with the perforations aligned to form a plurality of individual small diameter channels. The interior surfaces of the array channels are then hydrogen reduced 3,492,523 Patented Jan. 27, 1970 or otherwise treated to provide the desired resistive characteristics.
It is a further object of this invention to provide in such method the step of photoetching to produce the perforations in the individual glass plates.
It is a further object to place near the end of the array, such as between the final two layers of glass sheets, a highly conductive perforated plate so that a voltage lead may be attached to the plate to provide a gate for electrons formed in and coming through individual channels.
These and other objects and advantages will become more apparent when a preferred embodiment of this invention is considered in connection with the drawings in which:
FIGURE 1 is a plan view of a single sheet having a plurality of holes formed therein;
FIGURE 2 is a view in perspective of a partially completed stack of individual glass plates which are perforated and cemented in accordance with this invention; and
FIGURE 3 is a perspective view of a completed array.
Shown in FIGURE 1 is a glass sheet or film 20 which is in the order of .005 inch in thickness and may be composed of a mixture of 32 percent lead oxide, 61.3 percent silicon dioxide, 6.2 percent of barium carbonate and .5 of 1 percent bismuth trioxide. A plurality of holes 22 are formed in the sheet with the holes being small in diameter, in the neighborhood of .001 inch, and closely spaced. The spacing between holes in this embodiment is .1 the diameter of a hole. Two guide slots 24, 26 are formed near diagonally opposite corners of the sheet to effect alignment of the sheets as later explained.
The holes or perforations 22 may be formed in sheet 20 by a process known as photoetching. In this process a coating which is sensitive to light is placed on sheet 20.
. A transparent or transulcent negative having a plurality of opaque areas corresponding to the size and placement of holes 22 desired in sheet 20, is placed over the light sensitive coating and is exposed to a light for a predetermined length of time. The negative is removed and coating is then developed in a solution which dissolves the areas not subjected to the light, which would be the areas under the opaque sections corresponding to holes 22. An etch is used on the surface of the coating, which now has holes through it corresponding to holes 22 in glass sheet 20, to etch holes in sheet 20. After the etching is complete, a dissolver for the coating is utilized to clean the coating from sheet 20. This process is well known in the art and specific material for the light sensi tive coating, developing solution and etch can be obtained by consulting Techniques for Ruling and Etching Precise Scales in Glass and their Reproduction by Photoetching with a New Light Sensitive Resist US. National Bureau of Standards, circular 565:1-36, p. 30 C, Superintendent of Documents 1955. Also, photosensitive glass may be used in which case the step of applying and removing the resist coating on the glass becomes unnecessary.
Next, the individual glass sheets 20, prepared as previously described with perforations or holes 22, are stacked so that guide slots 24, 26 are aligned, and the stack is placed over guide pins 28, 30, FIGURE 2, so that the slots 24, 26 register with the slide over pins 28 and 30. In this manner all of the perforations or holes 22 become aligned to form the desired channels or tubes. After each sheet is placed over guide pins 28 and 30, a cement such as Coming Glass Company Pyroceram number 89 or solder glass may be applied to the outer boundaries thereof, to cement together adjacent sheets 20 upon the application of heat sufiicient to fuse the cement or solder glass but not hot enough to melt the sheets 20. Of course, the sheets may be fastened together in other suitable ways. Near one or both ends of the array, one or more conductive sheets 32, may be placed between two of the glass sheets 20. Sheets 32 may be of a metallic material such as a thin aluminum film and may have the holes formed therein in a manner similar to the glass sheets 20. A voltage lead 34 may be connected to the conductive sheet and a voltage applied to provide a gate to prevent the flow of electrons. For example, if a high negative potential is applied to the conductive sheet 32, the flow of electrons will be inhibited.
After the stack or array is completed and the individual sheets are cemented to each other or to conductive sheets, the array is subjected to a reducing procedure. Such reduction can be done by heating the array to 325 to 500 degrees centigrade for 8 to 16 hours while flowing one liter per minute of pure hydrogen through the channels of the array. This will provide a resistive surface of the desired characteristics for a particular application of about 100 angstroms units thick.
A conductive coating 36 may be put on the sheet at each of the array with a conductive paint such asa gold or silver paint or by vapor depositing the gold or silver or other conductive material at a steep angle on the sheet ends so that the conductive coating will not form on more than a minimum of the tube or channel interiors.
When this is completed, leads 38, 40 are attached to the conductive coatings and a voltage source 42 is placed therebetween to provide the necessary accelerating field across each tube and provide current for secondary emission form the resistive surfaces on each tube or channel.
Although this invention has been disclosed and illustrated with reference to particular applications, the principles involved are susceptible of numerous other applications which will be apparent to persons skilled in the art. The invention is, therefore, to be limited only as indicated by the scope of the appended claims.
What is claimed is:
1. A method of making an image intensifier array comprising the steps of forming in a plurality of thin insulative glass sheets containing at least one of the elements lead and bismuth, a plurality of relatively small diameter holes which are spaced apart a distance which is only a fraction of said hole diameters, stacking a plurality of insulative sheets so that each of said insulative sheets is in direct contact with another insulative sheet, aligning the holes of each sheet with the holes in adjacent sheets thereby forming a plurality of tubular passages with the number of said sheets in stacked relation being sufliciently large so that the length to diameter ratio of said tubular passages is relatively large, bonding and sheets together, hydrogen reducing the tubular passages formed in said sheets by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface on the side of said tubular passages.
2. A method of making an image intensifier array comprising the steps of forming in a plurality of thin insulative sheets which are in the order of .550" in thickness a plu-' rality of relatively small diameter holes which are in the order of .001 in diameter and spaced apart a distance which is only a fraction of said hole diameters, stacking a plurality of insulative sheets so that each of said insulative sheets is in direct contact with another insulative sheet, aligning the holes of each sheet with the holes in adjacent sheets thereby forming a plurality of tubular passages, bonding said sheets together, hydrogen reducing the tubular passages formed in said sheets by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface, placing a conductive coating on the faces of the sheet at each end of the array, and establishing an accelerating field across each tubular passage and providing current for secondary emission from the surface of the tubular passages by applying a voltage between the conductive coatings.
3. A method of making an image intensifier array comprising the steps of forming in each of a plurality of thin insulative sheets a plurality of relatively small diameter holes which are spaced apart a distance which is only a fraction of said hole diameters, stacking a plurality of insulative sheets so that each of said insulative sheets is in direct contact with another insulative sheet, said sheets being formed of glass containing one of the elements lead or bismuth, aligning the holes of each sheet with the holes of adjacent sheets thereby forming a plurality of tubular passages with the number of said sheets in stacked relation being sufliciently large so that the length to diameter ratio of said tubular passages is relatively large, bonding said sheets together, hydrogen reducing the tubular passages formed in said sheets by heating said sheets to an elevated temperature while flowing hydrogen through the passages to produce a secondary emissive resistive surface, applying a conductive coating on the faces of the sheet at each end of the array, and establishiing an accelerating field across each tubular passage and providing current for secondry emission for the surface of the tubular passages by applying a voltage between the conductive coatings.
4. The method of claim 3 further including the step of forming guide slots in each of the sheets, and each of said stacking and aligning steps including the substep of aligning said slots of guide pins.
5. The method of claim 3 in which said bonding step is performed by applying a cementing medium to the outer boundaries of the sheets and fusing the cementing medium in place.
6. The method of claim 3 further including the steps of placing a conductive layer between two of the insulative sheets, connecting a voltage lead to the conductive layer, and applying a voltage to the voltage lead to gate the flow of electrons through said tubular passages.
7. The method of claim 1 wherein said elevated temperature is within the range of approximately 325 to 500 C.
8. The product fabricated from the method of claim 1.
9. The product fabricated from the method of claim 2.
References Cited UNITED STATES PATENTS 2,588,920 3/1952 Green. 2,597,562 5/1962 Blodgett.
2,777,084 1/1957 Laiferty.
2,806,958 9/1957 Zunick.
2,817,781 12/1957 Sheldon 3l3-l05XR 2,821,637 l/l958 Roberts etal.
3,062,926 11/1957 McGee 313 355 XR 3,128,408 4/1960 Goodrich etal.
ROBERT F. BURNETT, Primary Examiner R. L. MAY, Assistant Examiner US. 01. X.R.
UNITED S'IA'IES PATENT OFFICE CERTIFICATE OF CORRECTION mom No. 3,422,523 Dated anuary 27, 1 70 lnv( ntor(.-;) I lq yt le r l Iil Sm1'th, Robert R. Thompson, Bagdasar Deradoor'ian It is (:crt'Ifiml lhat error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
IN THE SPECIFICATION Column l line 50, conventing. should read -converting-.
Column l line 69, stracki ng. should read --stack1'ng--.
Column 2, line 64, the. should read -and-.
Column 3, line 23, --end-- should appear after .each.
Column 3, line 32, .form. should read "from".
IN THE CLAIMS Claim 1 column 3, l ine 52, and. should read --sa1d-.
aim-21) All, when Nov 1 0 (SEAL) Attest:
Admin Offioer vmmm E. saw
g oomissioner or Pam FORM P0-1050 [10-69) USCOMM-DC GOING-P09 w u s. oovnnncm nmmna OFFICE: an o-su-su
US660142A 1960-04-20 1967-08-11 Method of making an image intensifier array and resultant article Expired - Lifetime US3492523A (en)

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US660142A US3492523A (en) 1960-04-20 1967-08-11 Method of making an image intensifier array and resultant article

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US23574A US3128408A (en) 1958-09-02 1960-04-20 Electron multiplier
US11604461A 1961-06-09 1961-06-09
US116189A US3343025A (en) 1961-06-09 1961-06-09 Electron multiplier array for image intensifier tubes
US11765161A 1961-06-16 1961-06-16
US13233461A 1961-08-18 1961-08-18
US40502064A 1964-10-14 1964-10-14
US660142A US3492523A (en) 1960-04-20 1967-08-11 Method of making an image intensifier array and resultant article

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US3693005A (en) * 1970-04-06 1972-09-19 Philips Corp Secondary-emissive electrode
US3853528A (en) * 1970-02-27 1974-12-10 Siemens Ag Slot nozzle for isotope separation of gaseous compounds
US4096626A (en) * 1976-12-27 1978-06-27 International Business Machines Corporation Method of making multi-layer photosensitive glass ceramic charge plate
FR2403181A1 (en) * 1977-09-20 1979-04-13 Lignes Telegraph Telephon EXTRUSION TOOL
US4153855A (en) * 1977-12-16 1979-05-08 The United States Of America As Represented By The Secretary Of The Army Method of making a plate having a pattern of microchannels
US4576679A (en) * 1981-03-27 1986-03-18 Honeywell Inc. Method of fabricating a cold shield
GB2416914A (en) * 2004-08-03 2006-02-08 Richard Benedict Gillon A colour night-vision roller-blind for a train window

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US2777084A (en) * 1952-04-12 1957-01-08 Gen Electric Plastic electrode structure for electron tubes
US2821637A (en) * 1953-11-30 1958-01-28 Westinghouse Electric Corp Light image reproduction devices
US2806958A (en) * 1954-01-21 1957-09-17 Gen Electric Radiographic diaphragm and method of making the same
US2817781A (en) * 1954-05-27 1957-12-24 Sheldon Edward Emanuel Image storage device
US3128408A (en) * 1958-09-02 1964-04-07 Bendix Corp Electron multiplier
US3062926A (en) * 1959-03-20 1962-11-06 John J Ronci Magnet with vibratable armature

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853528A (en) * 1970-02-27 1974-12-10 Siemens Ag Slot nozzle for isotope separation of gaseous compounds
US3693005A (en) * 1970-04-06 1972-09-19 Philips Corp Secondary-emissive electrode
US4096626A (en) * 1976-12-27 1978-06-27 International Business Machines Corporation Method of making multi-layer photosensitive glass ceramic charge plate
FR2403181A1 (en) * 1977-09-20 1979-04-13 Lignes Telegraph Telephon EXTRUSION TOOL
US4153855A (en) * 1977-12-16 1979-05-08 The United States Of America As Represented By The Secretary Of The Army Method of making a plate having a pattern of microchannels
US4576679A (en) * 1981-03-27 1986-03-18 Honeywell Inc. Method of fabricating a cold shield
GB2416914A (en) * 2004-08-03 2006-02-08 Richard Benedict Gillon A colour night-vision roller-blind for a train window
GB2416914B (en) * 2004-08-03 2006-07-26 Richard Benedict Gillon The night colour-vision train window or curtain

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