US2034174A - Electron tube - Google Patents
Electron tube Download PDFInfo
- Publication number
- US2034174A US2034174A US634705A US63470532A US2034174A US 2034174 A US2034174 A US 2034174A US 634705 A US634705 A US 634705A US 63470532 A US63470532 A US 63470532A US 2034174 A US2034174 A US 2034174A
- Authority
- US
- United States
- Prior art keywords
- tubelet
- electron
- electrons
- pencil
- tube
- 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
- H01J29/70—Arrangements for deflecting ray or beam
Definitions
- the present invention relates to electron ray tubes and principally to a cathode ray tube.
- An important object of the present invention is to provide ways and means adapted to cause an electron-ray pencil to be deflected out of its direction into another direction without requiring the use of either electrical or magnetic fields.
- An arrangement of this kind ofiers particular advantages in connection with the construction of electron-ray tubes whether these be employed for oscillographic, sound-film or television work,
- a device of the said sort is realizable by a metallic tubelet which has a width of 2 mm., for example, and the requisite curvature.
- the small diameter tubelet is kept at anode potential or at another suitable but diiferent voltage. If the electron-ray pencil emanating from a hot cathode is-caused to pass into the metallic tubelet as far as feasible coaxially therewith, in the presence of slight volumes of gas, the pencil of electrons will be guided along the curvature of the tubelet-and will leave the latter in the changed direction.
- a tubelet of the said sort may serve the purpose of causing the electron-ray pencil to proceed exactly ire-determined direction, for example, along the tubular axis of an oscillographic tube.
- a heated cathode 2 Opposite the cathode member 2 is disposed a curved metal tubelet 3 in such a way that, upon application of'a suitable voltage to the tubelet by way of the lead 6, the electrons issuing from the cathode will be guided into the opening 5 of the said tubelet.
- the flared or enlarged inlet opening 5 of the metallic tubelet consists most conveniently of a difllcultly fusible metal such as molybdenum, while the rest of the tubelet may consist of some other metal such as copper which has its interior surface silver-coated, if desired.
- a metal tubelet an insulating tube which rendered conductive in its interior surface could be employed.
- Such a structure might, for example, be an internally silver-coated glass tubelet.
- the tubelet 8 serves and acts at the same time as the anode element for the tube. In its stead, however, a distinct anode could be mounted between the .heated cathode and the tubelet.
- the tubelet could then be kept at the same potenthe way shown by the modified arrangement in Fig. 2.
- tube consists of two vessels connected by way of a fleiziblecopper tube 9. contained within the vessel It is a -hot cathode it which gives off electrons.
- This vessel is closed by means of a cap i3, e. g., of copper, into which the flexible copper tube 9 is fitted.
- a suitable voltage of, say, a few hundred volts
- the electrons will be deflected towards the opening I! the cathode-ray and they emerge from tubelet 9 at the opening I! thereof and enter into most suitably is shut'likewise by means of a cop-' per cap ll.
- the electron pencils may then be rendered visible by the fluorescent screen 20.
- the said copper tubelet 9 may be bent into any formation with the result that the electron-ray pencil is caused to flow-in any desired direction. It would thus be possible, for instance, to bend the pencil in such a direction that it will not be acted upon by whatever fields may .prevail in space, say, by terrestrial magnetism.
- This form of construction of the cathode-ray l0 and which are of the electrons is dethe vessel H which tube moreover oflers the advantage that deflector means such as deflecting coils I! may be applied at any desired proximity to the pencil of electrons and at the same'time at greater distance irom the place oi. generation of the pencil, while yet being located in the outside space.
- deflector means such as deflecting coils I! may be applied at any desired proximity to the pencil of electrons and at the same'time at greater distance irom the place oi. generation of the pencil, while yet being located in the outside space.
- Another advantageous feature may be regarded to reside in that when the tube is connected with a pump, an appreciable pressure diflerence ismaintalnable between the two spaces; for instance, space Y or vessel is may be kept substantially ireeirom gases" wmle inside space H Blight volumes or gas may be present.
- deflector plates '69 designed for insuring electrostatic deviation may be mounted.
- a cathode ray device comprising a pair oil. independent envelope members each maintained at a 'difierent pressure, a source of cathode rays contained within one envelope; a fluorescent screen contained within the other envelope, a-
- a cathode ray device comprising a. source of electrons. a flexible tubular anode member to cause the electrons to be drawn from the source in the form of an electron pencil, a funnelshapedmouth portion for said anode member, said mouth portion being constituted of a difficultly fusible material and constituting an inlet opening for said tubular anode and positioned substantially adjacent the source of electrons for receiving the emitted electrons, and a fluorescent viewing screen in the path the electrons issuing from the flexible tubular anode member.
Landscapes
- Particle Accelerators (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA0063541 | 1931-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2034174A true US2034174A (en) | 1936-03-17 |
Family
ID=6943223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US634705A Expired - Lifetime US2034174A (en) | 1931-09-25 | 1932-09-24 | Electron tube |
Country Status (4)
Country | Link |
---|---|
US (1) | US2034174A (me) |
FR (1) | FR743073A (me) |
GB (1) | GB386282A (me) |
NL (1) | NL36988C (me) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3529198A (en) * | 1968-04-10 | 1970-09-15 | Us Air Force | Apparatus to control the energy distribution of an electron beam |
-
0
- NL NL36988D patent/NL36988C/xx active
- FR FR743073D patent/FR743073A/fr not_active Expired
-
1932
- 1932-09-24 US US634705A patent/US2034174A/en not_active Expired - Lifetime
- 1932-09-24 GB GB26592/32A patent/GB386282A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3529198A (en) * | 1968-04-10 | 1970-09-15 | Us Air Force | Apparatus to control the energy distribution of an electron beam |
Also Published As
Publication number | Publication date |
---|---|
GB386282A (en) | 1933-01-12 |
FR743073A (me) | 1933-03-23 |
NL36988C (me) |
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