US2594025A - Electron tube with luminescent shield, especially tuning tube - Google Patents

Electron tube with luminescent shield, especially tuning tube Download PDF

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Publication number
US2594025A
US2594025A US188161A US18816150A US2594025A US 2594025 A US2594025 A US 2594025A US 188161 A US188161 A US 188161A US 18816150 A US18816150 A US 18816150A US 2594025 A US2594025 A US 2594025A
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US
United States
Prior art keywords
control electrode
cathode
anode
indicating
tube
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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
US188161A
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English (en)
Inventor
Jacobi Werner
Hinderer Hermann
Katz Helmut
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.)
Siemens and Halske AG
Siemens AG
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Siemens AG
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Publication date
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Classifications

    • 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
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/14—Magic-eye or analogous tuning indicators
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/21—Paper; Textile fabrics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/28—Presence of paper
    • C09J2400/283—Presence of paper in the substrate

Definitions

  • This invention is concerned with an electron discharge device, especially with a tuning tube having an elongated fluorescent anode which becomes luminous to display, for indicating purposes, a bright and sharply defined luminous, variable light pattern responsive to variations lengthwise of the cathode of the electron flow to the fluorescent anode by varying voltages applied to an associated control electrode.
  • the object of the invention is to provide, in a discharge device of the above noted specific type, a novel control electrode which is made in the form of a shutterlike member to regulate the flow of electrons emitted by the cathode, so as to cause the fluorescent anode to display the luminous indicating light pattern.
  • the shutterlike control electrode may be a sheetlike member in which is formed a wedge-shaped or trapezoidal opening, and such member may be disposed in parallel with the cathode, or it may be disposed at an angle thereto, so that its spacing from the cathode and from the fluorescent anode varies from point to point lengthwise of the cathode in planes along imaginary lines drawn from the cathode to the fluorescent anode.
  • the control electrode may also be 'made in the form of a frame defining an opening, and may in such case be so constructed and arranged that parts thereof extend in parallel with the cathode and other parts at an angle thereto.
  • the novel control electrode offers several significant advantages. It is structurally exceedingly simple, and may therefore be produced at less cost than prior electrodes made for the indicated purpose. the new control electrode facilitates assembly with other parts to form the discharge device, thus contributing to further reduction of the production costs. The new control electrode is also more sensitive in operation than control electrodes made heretofore for the purpose in view, and produces very favorable, sharply outlined indication with clearly defined margins between the relatively bright and relatively dark regions.
  • a predetermined indication e. g., practically any desired indicatin characteristics may be obtained by properly forming the opening of the shutterlike electrode.
  • the opening should be formed in accordance with a predetermined curve, particularly when it is desired to obtain non-linear indicating characteristics.
  • This object may also be realized by disposing the shutterlike control electrode at an angle to the cathode and the fluorescent anode instead or in The structural simplicity of parallel therewith.
  • the control electrode is, in such angular position effective in a definite plane extending over a. certain depth. The positioning in depth offers advantages even if no particular indicating characteristics are desired.
  • the shutterlike control electrode may be formed simply with an approximately rectangular slot instead of with a wedge shaped or trapezoidal cutout.
  • control electrode may be placed in parallel with one of the electrodes of the discharge device and another electrode may be positioned in an angular plane. It is further possible to arrange all three electrodes (cathode, control electrode and fluorescent indicating anode) in predetermined angular positions relative to each other.
  • the shutterlike control electrode may be made convex or ofconcave shape.
  • the invention also contemplates the use of a control electrode having a plurality of shutter portions in which are formed trapezoidal or rectangular openings at different side or depth angles and especially at oppositely directed angles.
  • the luminous indication of the fluorescent indicating anode proceeds in such structure from two spots, leavin a certain portion, e. g., the central portion dark or proceeding from the center and causing the luminous effect to extend toward opposite ends.
  • Fig. 1 shows in schematic perspective an exploded view of a simple embodiment of the invention comprising a control electrode in which is formed a Wedge-shaped opening, the electrode being disposed between the cathode and the fluorescent anode and in parallel therewith;
  • Fig. 2 shows in like schematic manner an embodiment in which the control electrode is .disposed between the cathode and the fluorescent anode and at an angle thereto;
  • Fig. 3 illustrates an embodiment comprising an arcuately curved control electrode in which is formed a rectangular slot
  • Fig. 4 represents an embodiment in which the control electrode is again a sheetlike member in which are formed two openings;
  • Fig. 5 shows another embodiment in which .the
  • control electrode is provided with two wedge shaped cutouts
  • Figs. 6 and 7 indicate modified arrangements employing framelike control shutters
  • Fig. 8 shows in diagrammatic sectional view an arrangement similar to the one of Fig. 6 or 7. and Fig. 9 illustrates a modification thereof;
  • Figs. 10 and 11 represent a structure employing a control electrode having a rectangular slot of varying depth
  • Figs. 12, 13 and 14 indicate modifications of the structures of Figs. 10 and 11;
  • Fig. 15 illustrates a modified control electrode in which only certain marginal zones are eifective.
  • numeral l designates the cathode which is constructed as a tubular cathode carrying an outer emission layer and containing the usual heatingmeans.
  • the fluorescent anode comprising the rodlike support 1 which is made of glass. This glass rod is provided with a groove 8 facing the cathode, the groove containing the fluorescent substance indicated by numeral 6.
  • the wedge shaped opening in the electrode 3 varies from point to point and thereby causes a variable luminous response of the fluorescent anodes 6-1-8 so that variable portions of the fluorescent substance become activated depending on the control voltages applied to vary the flow of the electrons.
  • the construction of the fluorescent anode is disclosed in copending application Ser. No. 188,162.
  • the control electrode 9 of Fig. 2 is disposed in angular position between the cathode Ill and the fluorescent anode II which may in this embodiment be a striplike member.
  • This type of anode is likewise disclosed in the copending application Ser. No. 188,162.
  • a particular indication characteristic may be obtained in this case, which could otherwise be produced only by means of an opening formed in accordance with a particular curve. It is possible to produce in this manner a nonlinear characteristic with a control electrode having an opening with straight lateral marginal edges.
  • the angular positioning of the control electrode also permits deviation from the wedge or trapezoidal form of the cutout and to provide a generally rectangular slot, as shown in the electrode M of the embodiment illustrated diagrammatically in Fig. 3.
  • the cathode l2 and the striplike fluorescent indicating anode l3 are again disposed in parallel relationship.
  • the control electrode 14 is arcuately curved as shown for the purpose of obtaining a desired. and especially a fluorescent anode and to dispose the corresponding remaining third electrode angularly and, as mentioned before, it is finally possible to position all three electrodes angularly relative to one another;
  • a portion of the elongated fluorescent column or" the indicating anode will be activated in operation while other portions will remain dark. If the indicating tube is used in conjunction with awireless receiver, the border line between the dark and the bright portions of the luminous indicating column will shift incident to the tuning. Reception from a more powerful transmitter will cause greater shifting, thus permitting conclusions as to the energy of the transmitter which may have been tuned in.
  • the indication may be accomplished in two different ways. First, the width of the bright spot may be permitted to grow incident to tuning involving a stronger transmission source and, second, the reverse procedure may be employed, permitting the dark field to grow during the tuning. The second procedure is for many cases more favorable and has in addition advantages from the circuit design point of VIEW.
  • Numeral IS in this figure indicates a cathode which is directly or indirectly heated and which consists essentially of an elongated filament.
  • the control electrode I6 is disposed in back of the control electrode I6 in back of the control electrode I6 in back of the control electrode I6 in back of the control electrode I6 in back of the control electrode I6 in back of the control electrode I6 in back of the control electrode I6 in back of the control electrode I6 in back of the control electrode I6 is disposed the narrow, elongated fluorescent indicating anode IT.
  • the control electrode I6 is provided with a wedgelike opening l8 which extends almost thruout its entire length.
  • a circular opening I9 is provided underneath the wedgelike opening i8 having a diameter which corresponds to the widest portion thereof.
  • the openings are so related to given control voltages that a bright luminous spot will be produced by the opening l9 upon the luminous indicating anode ll, independent of the regulation.
  • the wedge shaped opening I8 operates similarly, so that a bright luminous spot also appears at the opposite end of the indicating anode ll which corresponds to the opening l8 at its wide end.
  • the entire indicating anode [1 will be activated.
  • the luminous portion will retreat from the center upwardly, depending on the strength of the received high frequency amplitude, so that the dark field between the upper and lower light spots will steadily grow. It is a fact borne out by experience that bright areas are more impressive to the eye than dark ones. The indication therefore Will become more effective if a longitudinally variably dark area'is disposed between two bright light spots.
  • the cathode I5 is in this embodiment supplied with direct current which may be tapped from the anode voltage source of a wireless receiver.
  • the filament is poled so that the negative pole is at the upper and positive pole at its lower end. This results in a supporting action with respect to the indication, which may be further increased by conducting the anode current of the tube stage which is to be tuned either wholly or preponderantly over the filament.
  • the anode current drops upon reaching exact tuning and thus reduces the heating current so that the dark field becomes greater.
  • the observation of the luminous column can be carried out in different ways.
  • the luminous indicating column is upon a glass rod, i. e., upon a transparent-support T which permits observation from the rear of the device, i. e., looking in a direc tion through the transparent support.
  • the control electrodes H and I3 are disposed at an angle and the luminous column may thus be observed from the side.
  • the embodiment Fig. 4 employs a cathode formed by a thin filament which is so thin that it does not noticeably disturh the observation of the luminous column from the front although lying within the field of observation.
  • the control electrode has in this case also part of the'additional function of optically focussing the production of the luminous indication on the indicating anode.
  • is provided with two identical wedge shaped openings 23 and 2d.
  • the apices of these openings meet substantially centrally as shown.
  • the cathode 2a may again be poled so as to obtain a supporting eiiect for the indicating action.
  • the center of the heating filament is for this purpose separately tapped and connected with the positive pole of the current source while the upper and lower ends thereof are connected'with the negative pole thereof.
  • a structure is employed, for example, in the embodiment shown in Fig. 6, the framelike control electrode being indicated at 25.
  • the figure shows a frontal elevational view, 1. e., looking at and past the cathode 28 through the opening in the framelike control electrode 25 toward the indicating anode 21.
  • the frame 25 is made of wire and forms a wedgeshaped or trapezoidal opening.
  • the structure produces a double indicating system comprising two symmetrically disposed parts.
  • Fig. '7 indicates a simplified form of the embodiment shown in Fig. 6.
  • the control electrode 30 which is a shaped wire is disposed between the thread-like cathode filament 28 and the indicating anode 29.
  • the control electrode may in its simplest embodiment be formed of a single wire which is bent in the shape of the numeral 3. Depending on the magnitude of the control voltage, more or less pronounced light spots 3i and 32 will be produced, resulting in dark areas 33 and 34 of correspondingly varying sizes.
  • the areas 35 and 36 on the indicating anode 2!] become only faintly luminous and thereby contribute toward making the indica tion readily apparent.
  • Fig. 8 illustrates in sectional view an arrangement of the type discussed with reference to Figs. 6 and 7. Between the cathode 31 (cathodes 26 and 28, respectively, of Figs. 6 and '7) and the indicating anode 38 (anodes 21 and 29, respectively, of Figs. 6 and 7) are shown portions of the control electrode 39 corresponding to the control electrodes 25 and 30, respectively, of Figs. 6 and '7. Fig. 8 also shows auxiliary electrodes 40 and i! disposed alongside the control electrode 39. These auxiliary electrodes serve as screening electrodes and may be connected to a fixed potential, i. e'., to the cathode potential.
  • Fig. 9 The arrangement according to Fig. 9 is a medi fication of the one indicated in Fig. 8.
  • the. screening electrodes t2 and 43 are not .disposed'in the same plane as the control electrode 44 but are carried arcuately forward with respect thereto.
  • the indicating anode 25 is similarly curved.
  • Numeral 36 indicates the cathode.
  • the edges of the shutterlike control electrode may be formed in such a manner that they extend thruout their length. with varying depth relative to the associated indicatinganode.
  • the opening in such control electrode may be a rectangular slot which varies in depth, from point to point lengthwise of the cathode and the indicating anode.
  • An example of such an embodiment is shown in-,-Fig. 1c. i'fis. disposed the control electrode 48 having a rectangularopening; and in back thereof is the indicating anode 49.
  • the arrows 59 indicate the direction in which the lubinous indication is observed along lines passing on either side of the cathode 47 thru the slotlike opening in the control electrode 48.
  • the latter is formed with walls of varying thickness, as is apparent from the view illustrated in Fig. 11.
  • I Fig. 12 indicates a'longitudinal section thru a somewhat modified control electrode of this type, comprising a plurality of leaves 51 which are assembled together.
  • control electrode shown in perspective view in Fig. 13 is made of sheet stock 52 forming a rectangular slot. Ears 53, 54 are disposed at the sides of the slot and extend therefrom. These ears have a form which corresponds to the structures shown in Figs. 10-12.
  • Fig. 15 shows another type of control electrode in which only the lower edges 64, 65, 66, 61 are essentially effective. These edges form an acute angle with an imaginary plane along which takes place the control of the entire electron flow.
  • the structure again produces two bright luminous spots at the ends of the indicating anode. Depending on the magnitude of the control voltages, the extent cf these bright spots will increase or decrease toward the center.
  • the frame may be provided with rounded ends as indicated in Fig 14 at 68, $9, or may be formed angularly as indicated in Fig. 15 at It, ll, respectively.
  • an electron discharge device having an elongated cathode and an elongated fluorescent indicating anode which becomes luminous to display a light pattern responsive to variations lengthwise of the cathode, of the electron flow from the cathode to the fluorescent anode, caused by varying voltages applied to said discharge device, a control electrode to which said voltage variations are applied for controlling said In back of the threadlike cathode electron flow, said control electrode consisting of an elongated shutterlike member disposed between said cathode and said fluorescent indicating anode and extending solely therebetween, an elongated opening being formed in said shutterlike member through which the electron flow can pass from said'cathode to said indicating anode, predetermined edges of the body of said shutterlike member extending angularly so as to provide for variable electron flow control longitudinally thereof.
  • edges of said shutter member which form the elongated opening therein extend angularly in transverse direction to form an opening of varying width therein.
  • edges of the body of said shutter member extend angularly in depth in planes extending along imaginary lines drawn from the cathode to said elongated fluorescent indicating anode.
  • the luminous light pattern produced on said elongated fluorescent indicating anode comprises two distinct areas at the opposite ends thereof which diifer in .relative brightness from the area extending therebetween.
  • HERMANN HINDERER HELMUT KATZ.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Barrages (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US188161A 1949-09-09 1950-10-03 Electron tube with luminescent shield, especially tuning tube Expired - Lifetime US2594025A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE293547X 1949-09-09
DE291029X 1949-09-09
DE293270X 1949-12-09

Publications (1)

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US2594025A true US2594025A (en) 1952-04-22

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US188161A Expired - Lifetime US2594025A (en) 1949-09-09 1950-10-03 Electron tube with luminescent shield, especially tuning tube
US188162A Expired - Lifetime US2594026A (en) 1949-09-09 1950-10-03 Electron tube with luminescent shield, especially tuning tube
US204122A Expired - Lifetime US2639398A (en) 1949-09-09 1950-11-29 Electronic tuning or indicating tube

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US188162A Expired - Lifetime US2594026A (en) 1949-09-09 1950-10-03 Electron tube with luminescent shield, especially tuning tube
US204122A Expired - Lifetime US2639398A (en) 1949-09-09 1950-11-29 Electronic tuning or indicating tube

Country Status (5)

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US (3) US2594025A (xx)
CH (3) CH291029A (xx)
FR (3) FR1027392A (xx)
GB (3) GB690756A (xx)
NL (2) NL86646C (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648795A (en) * 1951-08-09 1953-08-11 Lee Electronic Labs Inc Visual electron flow indicator
US2712612A (en) * 1940-07-23 1955-07-05 Lorenz C Ag Voltage reference indicating valve
US2736834A (en) * 1951-08-10 1956-02-28 Hartford Nat Bank & Trust Co Electron discharge tube comprising a luminescent screen
US2802128A (en) * 1952-06-21 1957-08-06 Int Standard Electric Corp Tuning indicator valve
US2805352A (en) * 1952-02-08 1957-09-03 Philips Corp Cathode-ray tube for tuning indication
US3619694A (en) * 1969-11-18 1971-11-09 Ise Electronics Corp Character-indicating electron tube with fluorescent display structure

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927237A (en) * 1940-07-23 1960-03-01 Int Standard Electric Corp Voltage indicator tubes
DE1036404B (de) * 1957-02-12 1958-08-14 Standard Elektrik Lorenz Ag Anordnung mit einer aus Kathode, Blende und Leuchtschirmanode bestehenden Anzeigeroehre
DE1037027B (de) * 1957-03-22 1958-08-21 Standard Elektrik Lorenz Ag Abstimmanzeigeroehre mit mindestens einem Verstaerkersystem
US2971120A (en) * 1959-11-04 1961-02-07 Edward L Schiavone Switching device
JPS59178444A (ja) * 1983-03-30 1984-10-09 Ricoh Co Ltd 照明装置
US4763041A (en) * 1983-10-24 1988-08-09 Ricoh Company, Ltd. Dot array fluorescent tube for writing optical information in optical printer
JPS61211956A (ja) * 1985-03-15 1986-09-20 Futaba Corp 真空螢光管

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994726A (en) * 1934-07-27 1935-03-19 Rca Corp Tuning indicator tube
US2130162A (en) * 1935-06-27 1938-09-13 Rca Corp Tuning indicator tube
US2175700A (en) * 1938-03-29 1939-10-10 Rca Corp Electronic indicating device
US2223285A (en) * 1937-04-26 1940-11-26 Hygrade Sylvania Corp Tuning indicator device
US2243034A (en) * 1937-06-03 1941-05-20 Hygrade Sylvania Corp Fluorescent indicating device
US2273800A (en) * 1939-08-09 1942-02-17 Hygrade Sylvania Corp Fluorescent type indicator tube
US2394857A (en) * 1940-07-23 1946-02-12 Rca Corp Electron ray indicating device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334473A (en) * 1941-08-07 1943-11-16 Rca Corp Frequency modulation tuning indicator
US2366320A (en) * 1942-08-29 1945-01-02 Rca Corp Voltage indicator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994726A (en) * 1934-07-27 1935-03-19 Rca Corp Tuning indicator tube
US2130162A (en) * 1935-06-27 1938-09-13 Rca Corp Tuning indicator tube
US2223285A (en) * 1937-04-26 1940-11-26 Hygrade Sylvania Corp Tuning indicator device
US2243034A (en) * 1937-06-03 1941-05-20 Hygrade Sylvania Corp Fluorescent indicating device
US2175700A (en) * 1938-03-29 1939-10-10 Rca Corp Electronic indicating device
US2273800A (en) * 1939-08-09 1942-02-17 Hygrade Sylvania Corp Fluorescent type indicator tube
US2394857A (en) * 1940-07-23 1946-02-12 Rca Corp Electron ray indicating device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712612A (en) * 1940-07-23 1955-07-05 Lorenz C Ag Voltage reference indicating valve
US2648795A (en) * 1951-08-09 1953-08-11 Lee Electronic Labs Inc Visual electron flow indicator
US2736834A (en) * 1951-08-10 1956-02-28 Hartford Nat Bank & Trust Co Electron discharge tube comprising a luminescent screen
US2805352A (en) * 1952-02-08 1957-09-03 Philips Corp Cathode-ray tube for tuning indication
US2802128A (en) * 1952-06-21 1957-08-06 Int Standard Electric Corp Tuning indicator valve
US3619694A (en) * 1969-11-18 1971-11-09 Ise Electronics Corp Character-indicating electron tube with fluorescent display structure

Also Published As

Publication number Publication date
NL80476C (xx) 1956-02-15
FR1025612A (fr) 1953-04-17
NL86646C (xx) 1957-11-15
GB690757A (en) 1953-04-29
CH293547A (de) 1953-09-30
US2594026A (en) 1952-04-22
FR1027392A (fr) 1953-05-11
FR1029710A (fr) 1953-06-05
CH293270A (de) 1953-09-15
GB709909A (en) 1954-06-02
CH291029A (de) 1953-05-31
US2639398A (en) 1953-05-19
GB690756A (en) 1953-04-29

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