US3919582A - Target mounting structure for use in camera tube - Google Patents

Target mounting structure for use in camera tube Download PDF

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Publication number
US3919582A
US3919582A US374395A US37439573A US3919582A US 3919582 A US3919582 A US 3919582A US 374395 A US374395 A US 374395A US 37439573 A US37439573 A US 37439573A US 3919582 A US3919582 A US 3919582A
Authority
US
United States
Prior art keywords
target
ring
bulb
end portion
faceplate
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 - Lifetime
Application number
US374395A
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English (en)
Inventor
Stefan Albert Ochs
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.)
Burle Technologies Inc
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Priority to US374395A priority Critical patent/US3919582A/en
Priority to CA202,171A priority patent/CA1001206A/en
Priority to GB2739674A priority patent/GB1454575A/en
Priority to NLAANVRAGE7408340,A priority patent/NL177363C/xx
Priority to DE2430739A priority patent/DE2430739C2/de
Priority to FR7422797A priority patent/FR2235475B1/fr
Priority to JP49074921A priority patent/JPS5747536B2/ja
Application granted granted Critical
Publication of US3919582A publication Critical patent/US3919582A/en
Assigned to NPD SUBSIDIARY INC., 38 reassignment NPD SUBSIDIARY INC., 38 ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RCA CORPORATION
Assigned to BURLE INDUSTRIES, INC. reassignment BURLE INDUSTRIES, INC. MERGER (SEE DOCUMENT FOR DETAILS). PENNSYLVANIA, EFFECTIVE JULY 14, 1987 Assignors: NPD SUBSIDIARY, INC., 38
Assigned to BANCBOSTON FINANCIAL COMPANY reassignment BANCBOSTON FINANCIAL COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BURLE INDUSTRIES, INC., A CORP. OF PA
Assigned to BURLE TECHNOLOGIES, INC., A CORP. OF DE reassignment BURLE TECHNOLOGIES, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. (SEE RECORD FOR DETAILS) Assignors: BURLE INDUSTRIES, INC., A CORP. OF PA
Assigned to BANCBOSTON FINANCIAL COMPANY reassignment BANCBOSTON FINANCIAL COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BURLE TECHNOLOGIES, INC., A DE CORPORATION
Anticipated expiration legal-status Critical
Assigned to BARCLAYS BUSINESS CREDIT, INC. reassignment BARCLAYS BUSINESS CREDIT, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BURLE TECHNOLOGIES, INC.
Expired - Lifetime legal-status Critical Current

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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
    • H01J29/026—Mounting or supporting arrangements for charge storage screens not deposited on the frontplate

Definitions

  • ABSTRACT The structure presents an improved method of mount ing targets such as silicon targets. in camera tubes such as vidiconsr
  • the target is mounted in a support ing structure which is held in place between the end of the camera tube bulb and the faceplate of the tube by the seal which holds the faceplate to the bulb.
  • the silicon target is held in place by being sandwiched between the upper end of the tube mount assembly and the faceplate. It lies in a metal centering ring which is insulated from a mesh ring by means of Lt ceramic washer, and it is held in place by means of a spring compressed between the faceplate and the centering ring.
  • This arrangement has the advantage of being simple to assemble since the various parts can be readily placed into position prior to attaching the faceplate to the tube bulb with an indium seal. Also, it permits the silicon target to be salvaged easily if the tube. is found to be defective.
  • the above urrangtrncitt has certain disadvantages.
  • a ceramic washer with parallel end surfaces is required in order to precisely position the target assembly relative to the tube mount assembly.
  • inaccuracies in the control of the ltngih of the tube mount assembly cause variations in the distance of the silicon target from the faceplate, such inaccuracies cause degradation of the performance of the tube.
  • a target support structure for a camera tube which comprises a supporting member which may be the end of the tube bulb.
  • a support ring having at least one flange at its periphery rests upon the supporting member.
  • the support ring has a substantially centralized aperture therein.
  • a target is mounted in the support ring extending across the centralized aperture of the support ring.
  • FIG. 1 is a cross sectional view of one embodiment of the present il'tvetttion.
  • FIG. 2 is atop plan view ofone embodiment of a target support. ring.
  • FIG. 3 is a cross sectional view of that section of the target support ring taken along line 3--3 of FIG. 2.
  • FIG. 4 is a cross sectional view of another embodiment of the present invention.
  • FIG. 5 is a cross sectional view of still another embodiment of the present invention.
  • the lIt'lpttYvLLl target mounting structure 10 comprises a target support ring i i in the form of a dished washer which is set onto the end 12 of the bulb 13.
  • a target such as the silicon target 16 of the preferred embodiment, is fitted into the dished portion of the target support ring 1
  • the structure It further comprises a flat annular washer it; used to sandwich the target 16 in place in the target support ring 14-. Pressure is applied to the first washer if by a spring ring 20 which is compressed by the facepla e 7.2 of the camera tube.
  • An indium seal 24 is used to hoid the faceplate 22 in position on the both I t target ing 26 surrounds the iridium seal 24 and is used as an electrode for making connec tions to the silicon target 16.
  • the target support ring 14 is generally in the shape of a dished washer comprising an annular member having at least one annular flange or a number of mounting tabs 28 located on the outer circumference of and extending radially outward from the ring 14.
  • the support ring 14 further comprises an annular portion 30 which is sloped relative to the mounting tabs 28 and a substantially flat central portion 32 which is substantially parallel to the tabs 28.
  • the central portion 32 has a central aperture 33 which is adapted to be fitted with a silicon target which rests on a ledge 34 shaped to receive the target.
  • the purpose of the sloped portion 30 of the support ring 14 is to allow sufficient clearance between the faceplate 22 and the ledge 34 to receive the spring ring 20, the flat washer l8, and the silicon target 16, as shown in FIG. 1.
  • the procedure for mounting a silicon target using the improved support structure 10 of the present invention will be explained.
  • the target support ring 14 is set in place on the end 12 of the bulb 13.
  • the target 16 is placed on the ledge 34 of the support ring 14.
  • the flat washer 18 and spring ring 20 are then placed respectively on top of the silicon target 16.
  • An indium ring having a substantially semicircular cross section together with a target ring 26 is then placed on the end 12 of the bulb 13.
  • the faceplate 22 is placed on top of the indium ring. Pressure is applied, and the faceplate 22 is pressed onto the indium ring so as to form the indium seal 24 having a T-shaped cross section, as shown.
  • the support ring 14 is made out of a conductive material having a thickness of about 3 mils.
  • the thickness of the seal 24 between the end 12 of the bulb l3 and the faceplate is about l5 mils.
  • the indium seal 24 is also conductive.
  • the improved target support structure 10 over the prior art are its simplicity of construction, its low cost, and the automatic proper positioning of the target 16 adjacent the faceplace 22.
  • the support structure 10 is simple to construct and of low cost because it may be stamped out of sheet metal instead of requiring a machined ceramic washer.
  • the target 16 is automatically positioned in close proximity with and parallel to the faceplate 22.
  • the improved target support structure 10 readily permits the salvage of a target 16 from a reject tube.
  • the target mounting structure 40 also comprises a target support ring 44 in the form of a dished washer which is set onto the end 42 of the bulb 43.
  • a silicon target 46 is fitted into the dished portion of the target support ring 44.
  • the target mounting structure 40 further comprises a retaining member 48 which may also be in the form of a dished washer as shown in FIG. 4.
  • the retaining member 48 is connected to the support ring 44, as by welding, thereby holding the silicon target 46 in place.
  • the retaining member 48 may be replaced by a plurality of tabs which are similarly welded to the retaining ring 44.
  • Other aspects of this embodiment 40 are similar in nature and purpose to the embodiment previously described.
  • the target mounting structure 50 comprises a flat target support ring 54 set onto the end 52 of a camera tube bulb S3.
  • the substantially flat target support ring 54 has a central aperture 55 which exposes the silicon target 56 to light coming through the faceplate 58.
  • the silicon target 56 is af fixed to the target support ring 54 by a retaining member 60 which is in the form ofa dished washer.
  • the retaining member 60 is attached to the support ring 54 along the lip 62 adjacent the support ring 54 as by welding.
  • the retaining member 60 can be replaced by a plurality of tabs having a similar cross sectional shape which would serve the same purpose as a single retaining member 60 having the form of a dished washer.
  • a camera tube target support structure comprismg:
  • a bulb having an end portion with a central openb. a faceplate extending across said end portion and hermetically sealed thereto by means of a ring of conductive sealant material which is interposed between the end portion of said bulb and said faceplate;
  • a support ring having at least one flange at its outer periphery which is fixably seated against the end portion of said bulb by said ring of conductive sealant material, and a radially inwardly extending central portion with a substantially centralized aperture therein; said central portion including a substantially flat ledge surface displaced from and substantially parallel to a major facing surface of said faceplate; said inwardly extending central portion including a sloped centering portion protruding within the central opening of the end portion of said bulb;
  • a camera tube target support structure comprising:
  • a faceplate extending across said end portion and hermetically sealed thereto by means of a ring of conductive sealant material which is interposed between the end portion of said bulb and said faccplate;
  • a support ring having at least one flange at its outer periphery which is fixably seated against the end portion of said bulb by said ring of conductive scalant material. and a radially inwardly extending cen tral portion with a substantially centralized aperture therein; said central portion including a substantially flat ledge surface displaced from and substantially parallel to a major facing surface of said faceplate; said inwardly extending central portion including a sloped centering portion protruding within the central opening of the end portion of said bulb; and
  • a target seated against said ledge surface and extending across said centralized aperture in said support ring, said support ring including inwardly extending means for retaining said target firmly seated against said ledge surface of said support ring.
  • a camera tube target support structure comprising:
  • a faceplate extending across said end portion and hermetically sealed thereto by means of a ring of conductive sealant material which is interposed between the end portion of said bulb and said faceplate;
  • a support ring having at least one flange at its outer periphery which is fixably seated against the end portion of said bulb by said ring of conductive sealant material, and a radially inwardly extending central portion with a substantially centralized aperture therein; said central portion including a substantially flat ledge surface displaced from and substantially parallel to a major facing surface of said faceplate;
  • a target retaining ring retaining said target firmly seated against said ledge surface of said support ring and including a sloped centering portion protruding within the central opening of the end portion of said bulb.

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
US374395A 1973-06-28 1973-06-28 Target mounting structure for use in camera tube Expired - Lifetime US3919582A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US374395A US3919582A (en) 1973-06-28 1973-06-28 Target mounting structure for use in camera tube
CA202,171A CA1001206A (en) 1973-06-28 1974-06-11 Target mounting structure for use in camera tube
GB2739674A GB1454575A (en) 1973-06-28 1974-06-20 Target mounting structure for use in camera tube
NLAANVRAGE7408340,A NL177363C (nl) 1973-06-28 1974-06-21 Televisiecamerabuis met een aan een einde van de buisballon afgedicht venster.
DE2430739A DE2430739C2 (de) 1973-06-28 1974-06-26 Bildaufnahmeröhre
JP49074921A JPS5747536B2 (fr) 1973-06-28 1974-06-28
FR7422797A FR2235475B1 (fr) 1973-06-28 1974-06-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US374395A US3919582A (en) 1973-06-28 1973-06-28 Target mounting structure for use in camera tube

Publications (1)

Publication Number Publication Date
US3919582A true US3919582A (en) 1975-11-11

Family

ID=23476615

Family Applications (1)

Application Number Title Priority Date Filing Date
US374395A Expired - Lifetime US3919582A (en) 1973-06-28 1973-06-28 Target mounting structure for use in camera tube

Country Status (7)

Country Link
US (1) US3919582A (fr)
JP (1) JPS5747536B2 (fr)
CA (1) CA1001206A (fr)
DE (1) DE2430739C2 (fr)
FR (1) FR2235475B1 (fr)
GB (1) GB1454575A (fr)
NL (1) NL177363C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521713A (en) * 1983-01-27 1985-06-04 Rca Corporation Silicon target support assembly for an image sensing device
US4940919A (en) * 1989-01-23 1990-07-10 Picker International, Inc. Support structure for vacuum tube components
US6803583B2 (en) * 2001-03-21 2004-10-12 M.E. Taylor Engineering Inc. Scintillator for electron microscope and method of making

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152487A (en) * 1928-12-12 1939-03-28 Knoll Max Cathode ray oscillograph
US3069586A (en) * 1961-04-19 1962-12-18 Antoniades Basil Mesh support assembly for a pickup tube
US3437860A (en) * 1967-04-06 1969-04-08 Gen Electric Image orthicon glass target with aluminum-tantalum oxide coating
US3619685A (en) * 1970-02-16 1971-11-09 John J Miller Photoconductive pickup tube with unitized electrode structure having the photoconductive target electrode spaced from the tube faceplate
US3725711A (en) * 1971-06-01 1973-04-03 Texas Instruments Inc Image pick-up tube support structure for semiconductive target
US3761762A (en) * 1972-02-11 1973-09-25 Rca Corp Image intensifier camera tube having an improved electron bombardment induced conductivity camera tube target comprising a chromium buffer layer
US3793571A (en) * 1969-03-15 1974-02-19 Philips Corp Camera tube comprising insulated diodes and a resistance layer
US3826943A (en) * 1972-02-29 1974-07-30 Nippon Electric Co Camera tube of vidicon style comprising single high melting-point metal seal provided with support for target

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4716969Y1 (fr) * 1968-09-05 1972-06-14
DE2037981C3 (de) * 1970-07-30 1973-09-13 Siemens Ag, 1000 Berlin U. 8000 Muenchen Speicherelektrodenhalterung fur Bild Aufnahme und Speicherrohren und Verfahren zum Herstellen einer solchen Halterung
DE2146667C3 (de) * 1970-09-19 1974-10-03 Matsushita Electronics Corp., Kadoma, Osaka (Japan) Speicherelektrodenanordnung für eine Fernsehkamera-Bildaufnahmeröhre
US3714488A (en) * 1970-09-19 1973-01-30 Matsushita Electronics Corp Pick-up tube envelope sealant extending into groove of annular target support

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152487A (en) * 1928-12-12 1939-03-28 Knoll Max Cathode ray oscillograph
US3069586A (en) * 1961-04-19 1962-12-18 Antoniades Basil Mesh support assembly for a pickup tube
US3437860A (en) * 1967-04-06 1969-04-08 Gen Electric Image orthicon glass target with aluminum-tantalum oxide coating
US3793571A (en) * 1969-03-15 1974-02-19 Philips Corp Camera tube comprising insulated diodes and a resistance layer
US3619685A (en) * 1970-02-16 1971-11-09 John J Miller Photoconductive pickup tube with unitized electrode structure having the photoconductive target electrode spaced from the tube faceplate
US3725711A (en) * 1971-06-01 1973-04-03 Texas Instruments Inc Image pick-up tube support structure for semiconductive target
US3761762A (en) * 1972-02-11 1973-09-25 Rca Corp Image intensifier camera tube having an improved electron bombardment induced conductivity camera tube target comprising a chromium buffer layer
US3826943A (en) * 1972-02-29 1974-07-30 Nippon Electric Co Camera tube of vidicon style comprising single high melting-point metal seal provided with support for target

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521713A (en) * 1983-01-27 1985-06-04 Rca Corporation Silicon target support assembly for an image sensing device
US4940919A (en) * 1989-01-23 1990-07-10 Picker International, Inc. Support structure for vacuum tube components
US6803583B2 (en) * 2001-03-21 2004-10-12 M.E. Taylor Engineering Inc. Scintillator for electron microscope and method of making

Also Published As

Publication number Publication date
FR2235475B1 (fr) 1978-12-01
NL177363B (nl) 1985-04-01
GB1454575A (en) 1976-11-03
FR2235475A1 (fr) 1975-01-24
CA1001206A (en) 1976-12-07
NL177363C (nl) 1985-09-02
JPS5747536B2 (fr) 1982-10-09
JPS5039020A (fr) 1975-04-10
NL7408340A (fr) 1974-12-31
DE2430739C2 (de) 1985-11-21
DE2430739A1 (de) 1975-01-23

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