US2828433A - Electron gun construction - Google Patents
Electron gun construction Download PDFInfo
- Publication number
- US2828433A US2828433A US580570A US58057056A US2828433A US 2828433 A US2828433 A US 2828433A US 580570 A US580570 A US 580570A US 58057056 A US58057056 A US 58057056A US 2828433 A US2828433 A US 2828433A
- Authority
- US
- United States
- Prior art keywords
- electron gun
- electrodes
- construction
- gun construction
- cathode ray
- 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
Links
Images
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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/48—Electron guns
- H01J2229/4824—Constructional arrangements of electrodes
- H01J2229/4827—Electrodes formed on surface of common cylindrical support
Definitions
- This invention relates generally to cathode ray tubes and more particularly to an electron gun construction for such cathode ray tubes.
- the invention includes an electron gun construction wherein an insulating member of a substantially cylindrical shape may be utilized to selectively encompass and house electrodes in predetermined desired shaped and spaced relationships. It is thereby possible to utilize the services of a relatively unskilled person to assemble the electron gun Within the insulating member and maintain a very high degree of assembly accuracy.
- Figure l is a view in cross-section of a portion of a cathode ray tube embodying the invention.
- Figure 2 is a view in cross-section of a portion of a cathode ray tube showing an additional embodiment of the present invention.
- a cathode ray tube 10 having an envelope 11, of any known construction such as glass, ceramic or metal, has positioned therein, at a beam generating portion thereof, an electron gun construction 13.
- the electron gun construction 13 includes a generally cylindrically shaped insulating member 12 having a substantially annularly shaped cross section.
- Member 12 may be made of any known insulating material such as glass, ceramic or the like, and may be provided with an outer surface 15 and an inner surface 16.
- the outer surface 15 of the member 12 may be of a circumference such that the member 12 will fit snugly adjacent the internal diameter of the envelope 11 of the tube 10, or of a circumference such that it may be supported by clips 19 in spaced relation to the envelope 11 as is shown in Figure 1.
- thte invention includes other methods of spacing the member 12 from the internal surface of envelope 11 as are known in the art.
- member 12 provided with the outer surface 15 of predetermined circumference such as to be conterminous with the tube circumferential dimension, as is shown in Figure 2.
- the insulating member 12 may be sealed directly to the tube envelope 11, that is, a glass to glass, or glass to ceramic or metal to glass seal may be effected.
- the internal surface 16 of member 12 may be shaped in any predetermined desired shape to house, for example, any predetermined shaped electrodes 14.
- the outer periphery of the electrodes 14 will determine the complementary desired configuration of the corresponding inner surface 16 which will house electrodes 14.
- the electrodes 14 may be held in position by use of well known lock rings or retainers 17.
- the inner surface 16 as a base for depositing thereon metallic or like coatings 18 to be utilized as accelerating electrodes.
- Any well known printed circuit technique may be utilized to deposit coating 18 to form desired anodes upon the internal surfaces 16 of member 12.
- Leads 20, to the deisred electrodes may be brought through member 12, such as by embedding of conductors therein or utilizing well known conductive paints to form leads 20, and directed to any desired position on or along the tube.
- An electron gun construction including electrodes, for utilization in a cathode ray tube, said gun comprising a acemes e i cylindrical insulating member being unitary with the References Cited in the file of this patent envelope of said cathode ray tube and comprising a sub- UNITED STATES PATENTS stantially unlnterrupted umtary structure, said member having an outer surface, and an inner surface, said outer 2,093,876 Von Ardenne Sept 1937 surface being the outer surface of said cathode ray tube 5 2384322 Gunzel et 1939 envelope, said inner surface being generally cylindrical 16041599 Breeden July 221 1952 shaped with varying diameters to selectively encompass, FOREIGN PATENTS carry and house said electrodes, and said inner surface 1058.848 France Man 19 1954 being formed into a plurality of configurations spaced along said member, said configurations complementing 10 said electrodes.
Description
March 25, 1958 L. FRENKEL ELECTRON GUN CONSTRUCTION Filed April 25, 1956 hill/Ill IN V EN TOR LOTHAQ HZENKEL. BY
ATTORNEY.
ELECTRON GUN CONSTRUCTION Lothar Frenkel, San Diego, Calif., assignor to General Dynamics Corporation, Rochester, N. Y., a corporation of Delaware Application April 25, 1956, Serial No. 580,570
1 Claim. (Cl. 313-82) This invention relates generally to cathode ray tubes and more particularly to an electron gun construction for such cathode ray tubes.
Various types of gun constructions are known in which a plurality of substantially cylindrical electrodes and apertured disk electrodes are aligned in spaced apart relation along a generally longitudinal axis of a cathode ray tube. In the prior art devices it has been necessary to mechanically join together a. network of bridging to support the electrodes and also to insulate the electrodes one from the other spacing them at the same time from the glass envelope of the tube. This has previously been accomplished by utilization of wire-like bridging carrying ceramic or glass-like sleeves or utilizing glass or ceramic rods to actually carry or space one element from the other. The conventional gun construction described, entails considerable detail of spot welding, sleeving or melting of insulators and fusing them to metallic parts. The prior art, therefore, required rather detailed and laborious techniques in construction of such electron guns all of which was rather time consuming and required highly skilled personnel in assembly thereof.
These disadvantages are overcome by the present invention. The invention includes an electron gun construction wherein an insulating member of a substantially cylindrical shape may be utilized to selectively encompass and house electrodes in predetermined desired shaped and spaced relationships. It is thereby possible to utilize the services of a relatively unskilled person to assemble the electron gun Within the insulating member and maintain a very high degree of assembly accuracy.
It is an object of this invention to provide an electron gun construction which may be readily assembled by relatively unskilled workers.
It is another object of this invention to provide an electron gun construction which may be easily preformed to desired internal configurations which configurations may be utilized to encompass, carry or house desired elec trodes.
It is another object of this invention to provide an electron gun construction wherein certain of the electrodes may be housed and carried by predetermined configurations therein.
It is another object of this invention to provide an electron gun construction wherein certain of the electrodes may be deposited upon the internal surfaces of a we shaped insulating member.
It is another object of this invention to provide an electron gun construction which may be made integral or conterminous with the cathode ray tube.
It is another object of this invention to provide an nited States Patent electron gun construction whose outer surfaces have a co-eflicient of expansion similar to that of the tube.
Other objects and advantages than those set forth will be apparent from the following description when read in connection with the accompanying drawings, in which:
Figure l is a view in cross-section of a portion of a cathode ray tube embodying the invention;
Figure 2 is a view in cross-section of a portion of a cathode ray tube showing an additional embodiment of the present invention.
Referring more particularly to Figure 1, a cathode ray tube 10 having an envelope 11, of any known construction such as glass, ceramic or metal, has positioned therein, at a beam generating portion thereof, an electron gun construction 13. The electron gun construction 13 includes a generally cylindrically shaped insulating member 12 having a substantially annularly shaped cross section. Member 12 may be made of any known insulating material such as glass, ceramic or the like, and may be provided with an outer surface 15 and an inner surface 16. The outer surface 15 of the member 12 may be of a circumference such that the member 12 will fit snugly adjacent the internal diameter of the envelope 11 of the tube 10, or of a circumference such that it may be supported by clips 19 in spaced relation to the envelope 11 as is shown in Figure 1. It should also be understood that thte invention includes other methods of spacing the member 12 from the internal surface of envelope 11 as are known in the art.
It is also within the contemplation of this invention to have member 12 provided with the outer surface 15 of predetermined circumference such as to be conterminous with the tube circumferential dimension, as is shown in Figure 2. In this manner the insulating member 12 may be sealed directly to the tube envelope 11, that is, a glass to glass, or glass to ceramic or metal to glass seal may be effected. Such a construction could utilize in addition, any compatible materials having like co-eflicients of expansion. The internal surface 16 of member 12 may be shaped in any predetermined desired shape to house, for example, any predetermined shaped electrodes 14. The outer periphery of the electrodes 14 will determine the complementary desired configuration of the corresponding inner surface 16 which will house electrodes 14. As is well known in the art, the electrodes 14 may be held in position by use of well known lock rings or retainers 17.
It is also within the purview of this invention to utilize the inner surface 16 as a base for depositing thereon metallic or like coatings 18 to be utilized as accelerating electrodes. Any well known printed circuit technique may be utilized to deposit coating 18 to form desired anodes upon the internal surfaces 16 of member 12. Leads 20, to the deisred electrodes, may be brought through member 12, such as by embedding of conductors therein or utilizing well known conductive paints to form leads 20, and directed to any desired position on or along the tube.
The particular embodiment of the invention illustrated and described herein is illustrative only and the invention includes such other modifications and equivalents as may readily appear to those skilled in the art within the scope of the appended claim.
I claim:
An electron gun construction, including electrodes, for utilization in a cathode ray tube, said gun comprising a acemes e i cylindrical insulating member being unitary with the References Cited in the file of this patent envelope of said cathode ray tube and comprising a sub- UNITED STATES PATENTS stantially unlnterrupted umtary structure, said member having an outer surface, and an inner surface, said outer 2,093,876 Von Ardenne Sept 1937 surface being the outer surface of said cathode ray tube 5 2384322 Gunzel et 1939 envelope, said inner surface being generally cylindrical 16041599 Breeden July 221 1952 shaped with varying diameters to selectively encompass, FOREIGN PATENTS carry and house said electrodes, and said inner surface 1058.848 France Man 19 1954 being formed into a plurality of configurations spaced along said member, said configurations complementing 10 said electrodes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US580570A US2828433A (en) | 1956-04-25 | 1956-04-25 | Electron gun construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US580570A US2828433A (en) | 1956-04-25 | 1956-04-25 | Electron gun construction |
Publications (1)
Publication Number | Publication Date |
---|---|
US2828433A true US2828433A (en) | 1958-03-25 |
Family
ID=24321627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US580570A Expired - Lifetime US2828433A (en) | 1956-04-25 | 1956-04-25 | Electron gun construction |
Country Status (1)
Country | Link |
---|---|
US (1) | US2828433A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2945143A (en) * | 1958-04-03 | 1960-07-12 | Shapiro Jack | Compact cathode ray tube |
US3175115A (en) * | 1960-08-25 | 1965-03-23 | Sylvania Electric Prod | Cathode assembly |
US3354339A (en) * | 1966-05-09 | 1967-11-21 | Stromberg Carlson Corp | Electrodes stacked in slotted tubular support |
US3383537A (en) * | 1965-10-07 | 1968-05-14 | Rank Organisation Ltd | Metal/ceramic cathode ray tube |
US3417448A (en) * | 1966-05-24 | 1968-12-24 | Ray H Kelley & Associates | Method of moulding electron tubes around removable mandrels carrying the tube electrodes |
US3526799A (en) * | 1967-05-26 | 1970-09-01 | Gen Electric | Electron discharge device subject to hydrocarbon background pressure and having carbon-dissolving electrodes |
US3787745A (en) * | 1969-03-13 | 1974-01-22 | Philips Corp | Electron tube for electron-optical image conversion |
US3875452A (en) * | 1970-03-12 | 1975-04-01 | Vere Krause Anthony Victor De | Cathode ray tube with longitudinally seamed body portions |
FR2431766A1 (en) * | 1978-07-20 | 1980-02-15 | Philips Nv | TELEVISION SHOOTING TUBE |
FR2431764A1 (en) * | 1978-07-20 | 1980-02-15 | Philips Nv | CATHODE RAY TUBE AND MANUFACTURING METHOD THEREOF |
US4607190A (en) * | 1984-05-07 | 1986-08-19 | U.S. Philips Corporation | Television camera tube with conductive wall coating and transversely wall supported electrode |
US4868455A (en) * | 1987-03-25 | 1989-09-19 | U.S. Philips Corporation | Electron beam device with an electron gun having a tubular insulating electrode support |
US5150002A (en) * | 1983-09-12 | 1992-09-22 | U.S. Philips Corporation | Electron tube with electrode centering arrangement |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2093876A (en) * | 1933-11-30 | 1937-09-21 | Ardenne Manfred Von | Braun tube |
US2184922A (en) * | 1936-03-22 | 1939-12-26 | Firm Of Fernseh Ag | Method of producing sectional coatings in vacuum vessels |
US2604599A (en) * | 1949-09-17 | 1952-07-22 | Sylvania Electric Prod | Cathode-ray tube |
FR1058848A (en) * | 1951-02-07 | 1954-03-19 | Loewe Opta Ag | Electrode system for electron tubes |
-
1956
- 1956-04-25 US US580570A patent/US2828433A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2093876A (en) * | 1933-11-30 | 1937-09-21 | Ardenne Manfred Von | Braun tube |
US2184922A (en) * | 1936-03-22 | 1939-12-26 | Firm Of Fernseh Ag | Method of producing sectional coatings in vacuum vessels |
US2604599A (en) * | 1949-09-17 | 1952-07-22 | Sylvania Electric Prod | Cathode-ray tube |
FR1058848A (en) * | 1951-02-07 | 1954-03-19 | Loewe Opta Ag | Electrode system for electron tubes |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2945143A (en) * | 1958-04-03 | 1960-07-12 | Shapiro Jack | Compact cathode ray tube |
US3175115A (en) * | 1960-08-25 | 1965-03-23 | Sylvania Electric Prod | Cathode assembly |
US3383537A (en) * | 1965-10-07 | 1968-05-14 | Rank Organisation Ltd | Metal/ceramic cathode ray tube |
US3354339A (en) * | 1966-05-09 | 1967-11-21 | Stromberg Carlson Corp | Electrodes stacked in slotted tubular support |
US3417448A (en) * | 1966-05-24 | 1968-12-24 | Ray H Kelley & Associates | Method of moulding electron tubes around removable mandrels carrying the tube electrodes |
US3526799A (en) * | 1967-05-26 | 1970-09-01 | Gen Electric | Electron discharge device subject to hydrocarbon background pressure and having carbon-dissolving electrodes |
US3787745A (en) * | 1969-03-13 | 1974-01-22 | Philips Corp | Electron tube for electron-optical image conversion |
US3875452A (en) * | 1970-03-12 | 1975-04-01 | Vere Krause Anthony Victor De | Cathode ray tube with longitudinally seamed body portions |
FR2431766A1 (en) * | 1978-07-20 | 1980-02-15 | Philips Nv | TELEVISION SHOOTING TUBE |
FR2431764A1 (en) * | 1978-07-20 | 1980-02-15 | Philips Nv | CATHODE RAY TUBE AND MANUFACTURING METHOD THEREOF |
US4276494A (en) * | 1978-07-20 | 1981-06-30 | U.S. Philips Corporation | Cathode ray tube with transversely supported electrode and conductive wall coating |
US5150002A (en) * | 1983-09-12 | 1992-09-22 | U.S. Philips Corporation | Electron tube with electrode centering arrangement |
US4607190A (en) * | 1984-05-07 | 1986-08-19 | U.S. Philips Corporation | Television camera tube with conductive wall coating and transversely wall supported electrode |
US4868455A (en) * | 1987-03-25 | 1989-09-19 | U.S. Philips Corporation | Electron beam device with an electron gun having a tubular insulating electrode support |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2828433A (en) | Electron gun construction | |
US3284655A (en) | Cathode ray tube mesh assembly supported between envelope sections | |
GB1113748A (en) | Improvements in or relating to electron sources for an electron gun | |
US4297612A (en) | Electron gun structure | |
US4213557A (en) | Method for producing a mass filter analyzer system and analyzer system produced according to the method | |
US2123957A (en) | Electron tube | |
US3979631A (en) | Cathode ray tube with electrostatic multipole focusing lens | |
US3462629A (en) | Self-aligning electron gun construction | |
US4721882A (en) | Cathode ray tube | |
EP2656355B1 (en) | Neutron generator with thick-film resistorized ceramic insulators for sealed high voltage tube electrodes | |
US3183388A (en) | Electron gun particle barrier formed by plurality of flexible radial sectors | |
US3971965A (en) | Internally-focused traveling wave tube | |
US4276494A (en) | Cathode ray tube with transversely supported electrode and conductive wall coating | |
US2802133A (en) | Electron discharge device | |
US4204302A (en) | Method for terminating an electrical resistor for a television CRT | |
GB1216584A (en) | Directly heated cathode | |
US3355614A (en) | High voltage beam tube having spark inhibiting contacting surfaces | |
US5712529A (en) | Vacuum electronic tube with getter support structure | |
US3188506A (en) | Cathode ray tube with signal plate connected to contact ring having envelope diameter | |
US2825832A (en) | Thermionic cathode structure | |
US2148588A (en) | Cathode ray tube | |
US3142775A (en) | Electron gun assemblies for cathode-ray tubes | |
GB788073A (en) | Improvements in precision cathode-ray tube assembly | |
US2894167A (en) | Electron discharge device | |
US2806279A (en) | Process for installing lead in a directviewing storage tube |