US3201634A - Electron tube for indicating symbols, letters, numerals, and the like - Google Patents

Electron tube for indicating symbols, letters, numerals, and the like Download PDF

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Publication number
US3201634A
US3201634A US201347A US20134762A US3201634A US 3201634 A US3201634 A US 3201634A US 201347 A US201347 A US 201347A US 20134762 A US20134762 A US 20134762A US 3201634 A US3201634 A US 3201634A
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US
United States
Prior art keywords
anodes
numerals
anode
cathode
electron 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
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US201347A
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English (en)
Inventor
Weidel Joachim
Bauer Werner
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.)
INDTERNAT STANDARD ELECTRIC CO
INDTERNATIONAL STANDARD ELECTRIC Corp
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INDTERNAT STANDARD ELECTRIC CO
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Application filed by INDTERNAT STANDARD ELECTRIC CO filed Critical INDTERNAT STANDARD ELECTRIC CO
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting
    • 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
    • H01J31/15—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with ray or beam selectively directed to luminescent anode segments

Definitions

  • Glow indicator tubes eliminate this drawback by having cathodes, shaped to represent the numerals, face a single anode and when the proper voltage is applied between cathode and anode, the cathodes edges become luminous and thus indicate the numeral, visually.
  • the cathodes are arranged in line in the form of thin wire bent to shape the numerals, causing the inoperative cathodes to cast shadows that create considerable undesirable parallax, which makes it extremely difficult to read the nu merals from the side.
  • An electron tube for indicating symbols, letters, numerals and the like eliminates the drawbacks described by providing in accordance with the invention a space charge producing cathode and anodes, partially or totally coated with a fluorescent substance, that conform to the symbols or symbol portions to be reproduced and by applying positive voltage in each instance only to those coated electrodes that represent the symbols or symbol portions that are to be reproduced at that moment.
  • the electron tube for indicating symbols, letters and numerals according to the invention is a highvacuum tube, with a life that can easily last more than ten times that of a glow indicator tube.
  • the instant tube allows depicting the digits of a decade in the same location, but without the involved circuitry required in operating an oscillograph tube and without the drawback of parallax associated with glow indicator tubes.
  • Electrode mounting supports, connections and other components are similar to those in conventional electron tubes and are not shown in detail.
  • FIG. 1 shows the basic elements of the tube
  • PEG. 2 shows the anode display configuration
  • FIGS. 3 and 4 show other embodiments of the invention.
  • cathode 2 and anode arrangement 4 are located in tube container 1.
  • a grid 3 is also inserted between the cathode and the anodes, said grid being preferably at cathode potential and tending to form an electron space-charge cloud or flood beam about the same size as the entire surface areas of anodes 4.
  • the grid controls the electrons by permitting emission from only the areas wherein the electric field from the positive anode penetrates the grid.
  • FIG. 2 is a front view of the anode arrangement.
  • a transparent and heataproof pane of insulative glass or mica for example, is coated in known fashion with a transparent conductive layer, of metal oxide for example, and divided into a plurality of separate conductive areas by etching, sandblasting or tracing lines 7, which subdivide the conductive layer, with contacts 5 being attached to individual said conductive areas.
  • These conductive layers face the cathode and in accordance with FIG. '2 have portions covered with a luminous or fluorescent substance 6, ZnO for example, to form segments of a figure or numeral 8.
  • the tubes vessel itself may serve the purpose, with the individual anodes attachment to it as transparent conductive layers and the fluorescent substance then applied thereto.
  • Fluorescent substance 6 applied to the individual anodes now glows at the section where the proper transparent conducting anode is connected to the positive pole of a voltage source switched in the circuit between cathode and anode. That voltage may be taken, unfiltered for example, from the terminals across a small dry rectifier or direct voltage source.
  • a voltage source switched in the circuit between cathode and anode. That voltage may be taken, unfiltered for example, from the terminals across a small dry rectifier or direct voltage source.
  • FIG. 2 when the proper contacts 5 are connected to the (positive) pole, as indicated by the shading, the number 3 appears.
  • the di its G 9 are produced in similar fashion.
  • the external switching and selection circuitry applying voltage to particular portions may be arranged in any suitable configuration known in the art. A circuit arrangement such as described by E. A. Sack, on pp. 113-118 of the March 1958 Transactions of the American Institute of Electrical Engineers, vol. 77, Part *I, would be applicable. Typical voltages applied to the electrodes
  • Another form of the invention is an arrangement wherein the anodes are not mounted in one plane but, as in the case of a glow indicator tube, are saggered one behind the other.
  • the anode support in accordance with FIG. 3.
  • the insulating base and the anodes attached thereto need not be transparent.
  • the electrons emanating from cathode 2, which is optically shielded by radiation pr otective sheet 3 fall at an angle onto the anode support whose luminescent layer faces the viewer.
  • the design of the anode support is round and it is arranged vertically to the tube vessels axis, in which case the luminescent coating preferably faces thefiatly designed light reflecting onto the photocathode produces more elecing separate adjacent segments disposed in an area in substantially a common plane, each anode including a conductive layer having predetermined portions coated with a fluorescent substance inthe form of a symbol portion, means applying voltage to selected anodes, and a grid disposed between the cathode and anodes, said grid forming the space-charge to correspond to the size of said area of said anodes and permitting emission to only said selected anodes causing said fluorescent portions thereof to glow and together form a complete symbol.
  • An electron tube display device wherein the anodes are formed on a common insula- V tive plate, the conductive layers being divided into respectrous and by means of optical feedback the indication reaches maximum brightness.
  • An electron tube display device comprising a spacecharge producing cathode, a plurality of anodes presentt-ive separate segments.
  • An electron tube display device according to claim 2, wherein the conductive layers are transparent.
  • An electron tube display device according to claim 3, wherein the insulator is transparent.
  • An electron tube display device according to claim 1, wherein a photocathode produces the space-charge.
US201347A 1961-06-16 1962-06-11 Electron tube for indicating symbols, letters, numerals, and the like Expired - Lifetime US3201634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST17961A DE1210091B (de) 1961-06-16 1961-06-16 Elektronenstrahlroehre zur Anzeige von Zeichen, Buchstaben oder Ziffern

Publications (1)

Publication Number Publication Date
US3201634A true US3201634A (en) 1965-08-17

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Family Applications (1)

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US201347A Expired - Lifetime US3201634A (en) 1961-06-16 1962-06-11 Electron tube for indicating symbols, letters, numerals, and the like

Country Status (5)

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US (1) US3201634A (de)
BE (1) BE618912A (de)
CH (1) CH413128A (de)
DE (1) DE1210091B (de)
GB (1) GB1011226A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258629A (en) * 1962-01-29 1966-06-28 Tung Sol Electric Inc Cold cathode display device with fluorescent indicia anodes
US3508101A (en) * 1967-03-27 1970-04-21 Ise Electronics Corp Character indicating electron tube
US3532921A (en) * 1967-08-19 1970-10-06 Nippon Electric Co Cathode luminescent indicator tube having a concave grid electrode
US3668466A (en) * 1969-04-17 1972-06-06 Sony Corp Electron type fluorescent display device with planar adjacent control electrode
US3688147A (en) * 1970-08-24 1972-08-29 Wagner Electric Corp Fluorescent symbol display tube having plural cathodes and/or vacuum anode insulation
JPS4729558Y1 (de) * 1971-03-02 1972-09-05
JPS493459U (de) * 1972-04-12 1974-01-12
JPS509882Y1 (de) * 1970-12-29 1975-03-26
JPS5014118B1 (de) * 1969-07-09 1975-05-24
US3906286A (en) * 1972-11-24 1975-09-16 Nippon Electric Co Hot-cathode indicator tube for displaying luminescent figures
JPS53166379U (de) * 1978-06-08 1978-12-26
US4135117A (en) * 1978-03-20 1979-01-16 Wagner Electric Corporation Vacuum fluorescent device with continuous strokes
JPS54109374A (en) * 1976-12-24 1979-08-27 Futaba Denshi Kogyo Kk Fluorescent display tube
US4472658A (en) * 1980-05-13 1984-09-18 Futaba Denshi Kogyo Kabushiki Kaisha Fluorescent display device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2708651C2 (de) * 1976-03-01 1984-03-08 Ise Electronics Corp., Ise, Mie Elektronenoptische Vorrichtung
JPS52105768A (en) * 1976-03-01 1977-09-05 Ise Electronics Corp Cathode ray display panel
GB1575912A (en) * 1976-07-10 1980-10-01 English Electric Valve Co Ltd Display arrangements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244245A (en) * 1937-07-30 1941-06-03 Emi Ltd Cathode ray tube
US2891185A (en) * 1957-12-31 1959-06-16 Burroughs Corp Indicator tube
US2957098A (en) * 1958-12-18 1960-10-18 Nuclear Corp Of America Multi-element counter tube
US3082341A (en) * 1958-02-12 1963-03-19 Philips Corp Valve for the projection of digits and characters for counters and computers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086814B (de) * 1958-04-11 1960-08-11 Standard Elektrik Lorenz Ag Elektrisches Entladungsgefaess zur Wiedergabe von Zeichen, z. B. Zahlen oder Buchstaben

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244245A (en) * 1937-07-30 1941-06-03 Emi Ltd Cathode ray tube
US2891185A (en) * 1957-12-31 1959-06-16 Burroughs Corp Indicator tube
US3082341A (en) * 1958-02-12 1963-03-19 Philips Corp Valve for the projection of digits and characters for counters and computers
US2957098A (en) * 1958-12-18 1960-10-18 Nuclear Corp Of America Multi-element counter tube

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258629A (en) * 1962-01-29 1966-06-28 Tung Sol Electric Inc Cold cathode display device with fluorescent indicia anodes
US3508101A (en) * 1967-03-27 1970-04-21 Ise Electronics Corp Character indicating electron tube
US3532921A (en) * 1967-08-19 1970-10-06 Nippon Electric Co Cathode luminescent indicator tube having a concave grid electrode
US3668466A (en) * 1969-04-17 1972-06-06 Sony Corp Electron type fluorescent display device with planar adjacent control electrode
JPS5014118B1 (de) * 1969-07-09 1975-05-24
US3688147A (en) * 1970-08-24 1972-08-29 Wagner Electric Corp Fluorescent symbol display tube having plural cathodes and/or vacuum anode insulation
JPS509882Y1 (de) * 1970-12-29 1975-03-26
JPS4729558Y1 (de) * 1971-03-02 1972-09-05
JPS493459U (de) * 1972-04-12 1974-01-12
US3906286A (en) * 1972-11-24 1975-09-16 Nippon Electric Co Hot-cathode indicator tube for displaying luminescent figures
JPS54109374A (en) * 1976-12-24 1979-08-27 Futaba Denshi Kogyo Kk Fluorescent display tube
JPS5441459B2 (de) * 1976-12-24 1979-12-08
US4135117A (en) * 1978-03-20 1979-01-16 Wagner Electric Corporation Vacuum fluorescent device with continuous strokes
JPS53166379U (de) * 1978-06-08 1978-12-26
JPS5525491Y2 (de) * 1978-06-08 1980-06-19
US4472658A (en) * 1980-05-13 1984-09-18 Futaba Denshi Kogyo Kabushiki Kaisha Fluorescent display device

Also Published As

Publication number Publication date
CH413128A (de) 1966-05-15
DE1210091B (de) 1966-02-03
GB1011226A (en) 1965-11-24
BE618912A (nl) 1962-12-14

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