GB908524A - Improvements in or relating to indicator tubes - Google Patents

Improvements in or relating to indicator tubes

Info

Publication number
GB908524A
GB908524A GB4445/59A GB444559A GB908524A GB 908524 A GB908524 A GB 908524A GB 4445/59 A GB4445/59 A GB 4445/59A GB 444559 A GB444559 A GB 444559A GB 908524 A GB908524 A GB 908524A
Authority
GB
United Kingdom
Prior art keywords
anode
apertures
electrons
grids
feb
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
Application number
GB4445/59A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB908524A publication Critical patent/GB908524A/en
Expired legal-status Critical Current

Links

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
    • H01J31/16—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with mask carrying a number of selectively displayable signs, e.g. charactron, numeroscope

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

908,524. Cathode-ray tubes. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 9, 1959 [Feb. 12, 1958], No. 4445/59. Class 39 (1). An indicator tube for the display of patterns, e.g. numerals, on a fluorescent screen E, comprises an electron source C 1 , C 2 , pattern-forming means including a conductive anode A having apertures of the patterns to be reproduced and a plurality of grids G 1 , G 2 so arranged that each grid, by means of a potential applied thereto, can control the flow of electrons to a corresponding anode aperture, and focusing means B for concentrating the beam or beams passing through anode A on to the fluorescent screen. As shown, the anode A has ten apertures of a shape corresponding to the digits 0 to 9, and the flow of electrons from cathodes C 1 , C 2 is controlled by ten independent grids G 1 , G 2 supported by insulating members S 1 -S 4 , so that electrons may pass through any one of the apertures in anode A, and a magnifying electronoptical system B to the same part of luminescent screen E. Alternatively, the apertures may be arranged around the periphery of anode A, the grids being supported between two insulating rings, Fig. 2 (not shown). In a further arrangement, the anode has twelve slots, digit 2, for example, being formed from slots P 1 -P 5 , Fig. 3.
GB4445/59A 1958-02-12 1959-02-09 Improvements in or relating to indicator tubes Expired GB908524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR758091 1958-02-12

Publications (1)

Publication Number Publication Date
GB908524A true GB908524A (en) 1962-10-17

Family

ID=8705729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4445/59A Expired GB908524A (en) 1958-02-12 1959-02-09 Improvements in or relating to indicator tubes

Country Status (4)

Country Link
US (1) US3082341A (en)
DE (1) DE1098628B (en)
FR (1) FR1191458A (en)
GB (1) GB908524A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1210091B (en) * 1961-06-16 1966-02-03 Standard Elektrik Lorenz Ag Electron beam tube for displaying characters, letters or numbers
DE1214799B (en) * 1962-04-28 1966-04-21 Raytheon Co Cathode ray tubes for displaying location signals on the screen
US3355620A (en) * 1963-12-02 1967-11-28 Tektronix Inc Pulse counter tube employing voltage feedback from target to beam deflection electrodes isolated from any d. c. reference voltage
US3284658A (en) * 1963-12-30 1966-11-08 Sperry Rand Corp Symbol generating tube having target matrix with conducting elements
US3430094A (en) * 1966-12-27 1969-02-25 Zenith Radio Corp Display devices
US3508101A (en) * 1967-03-27 1970-04-21 Ise Electronics Corp Character indicating electron tube
GB1161925A (en) * 1967-03-31 1969-08-20 Atomic Energy Authority Uk Improvements in or relating to Centrifuges

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379880A (en) * 1942-10-07 1945-07-10 Bell Telephone Labor Inc High-speed telegraph system
NL74386C (en) * 1942-10-07
US2766444A (en) * 1953-09-01 1956-10-09 Eugene H Sheftelman Electronic character displaying apparatus
US2761988A (en) * 1954-03-08 1956-09-04 Gen Dynamics Corp Cathode ray apparatus
US2769116A (en) * 1954-12-02 1956-10-30 Hughes Aircraft Co Deflection system for cathode-ray type storage tubes
US2758237A (en) * 1955-04-22 1956-08-07 Gen Dynamics Corp Apparatus for and method of producing character type fonts on a cathode ray display tube
US2826716A (en) * 1957-01-31 1958-03-11 Gen Dynamics Corp Beam selection system
US2862144A (en) * 1958-03-21 1958-11-25 Gen Dynamics Corp Simplified system for character selection in a shaped beam tube

Also Published As

Publication number Publication date
US3082341A (en) 1963-03-19
DE1098628B (en) 1961-02-02
FR1191458A (en) 1959-10-20

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