EP0068182A1 - Tube à rayons cathodiques avec bague magnétique - Google Patents

Tube à rayons cathodiques avec bague magnétique Download PDF

Info

Publication number
EP0068182A1
EP0068182A1 EP82104948A EP82104948A EP0068182A1 EP 0068182 A1 EP0068182 A1 EP 0068182A1 EP 82104948 A EP82104948 A EP 82104948A EP 82104948 A EP82104948 A EP 82104948A EP 0068182 A1 EP0068182 A1 EP 0068182A1
Authority
EP
European Patent Office
Prior art keywords
deflection system
magnetic ring
tube
attached
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.)
Granted
Application number
EP82104948A
Other languages
German (de)
English (en)
Other versions
EP0068182B1 (fr
Inventor
Walter Kornaker
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.)
Nokia Deutschland GmbH
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
International Standard Electric Corp
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0068182A1 publication Critical patent/EP0068182A1/fr
Application granted granted Critical
Publication of EP0068182B1 publication Critical patent/EP0068182B1/fr
Expired legal-status Critical Current

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
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • H01J29/703—Static convergence systems
    • 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
    • H01J29/48—Electron guns
    • H01J29/51—Arrangements for controlling convergence of a plurality of beams by means of electric field only

Definitions

  • the invention relates to a cathode ray tube with a front screen, a conical funnel part and a rear tube neck, in which an electron gun with a focusing electrode and other electrodes for generating at least two electron beams is arranged, and a magnetic deflection system attached to the transition from the tube neck to the funnel part for deflecting the electron beams the screen, with a magnetic ring attached to the electron gun.
  • the other type of electron gun has oval electrodes that are common to all three beams. Each electrode has three electron beam openings, the centers of which are all in one plane. Only the convergence pot placed at the very front in the direction of the screen has a circular cross section, as in the first type of electron gun. Tubes with such an electron gun are not yet commercially available with a magnetic ring attached to the electron gun. Such a tube was however presented at the "Electronica" exhibition in 1980, about which an article appeared in Funkschau 26/1980, page 57. In this tube, the magnetic ring was attached at the very front, i.e. on the side of the focusing electrode facing the screen. The deflection system was designed in such a way that it extended straight over the neck to the point where the magnetic ring was located in the front of the focusing grating.
  • the magnetic rings attached to electron guns are made of an iron-cobalt-vanadium alloy, and they can be magnetized from the outside with a strong magnetizing device to adjust the position of at least two electron beams of a cathode ray tube, especially in a color picture tube to adjust convergence, color purity and grid.
  • This magnetization initially takes place without an attached deflection system. Only then is the deflection system aligned and attached to the conical funnel part of the tube. So far, two work devices have been required for these manufacturing processes, namely one Magnetizing device and a deflection system alignment device.
  • the invention has for its object to provide a cathode ray tube of the type mentioned, which is designed so that the magnetizing process for the magnetic ring and the alignment process for the deflection system can be carried out quickly and safely on the simplest possible setting device.
  • the magnetic ring is attached to the electron gun, and that the deflection system and the electron gun are dimensioned and attached such that the magnetic ring lies outside the neck area covered by the deflection system.
  • This measure makes it possible to use an adjusting device in which the magnetizing device connects directly behind the deflection system alignment device at such a distance that the magnetization process and the deflection system alignment process can be carried out with the tube in the same position in the adjusting device.
  • either the magnetic ring in the electron gun must be moved further back until it is in an area of the neck that is no longer covered by the deflection system, or the deflection system must be in its rear region be built shorter, or both measures must be taken at the same time.
  • the shortening of the deflection system can be achieved within certain limits by shortening the rear holding sleeve of the deflection system.
  • placing the magnetic ring further back is technically more complicated. The position of the magnetic ring in the beam direction affects the beam sharpness.
  • a particularly favorable position of the magnetic ring provides in Seen in the beam direction, approximately the center of the focusing electrode. In this position, the magnetic ring is sufficiently far from the electron-beam-generating electrodes that are annealed during the tube manufacturing process. If the magnetic ring were too close to these electrodes, there would be the danger that it could also be heated to a high temperature and thus change its magnetic properties considerably. On the other hand, it would be disadvantageous if the magnetic ring were very close to the anode, which has a voltage of 25 kV.
  • the magnetic ring is in fact to be fastened in some way, which causes a deformation of the corresponding electrode at the fastening point. Such deformation, for example a notch in the immediate vicinity of the anode, can lead to high voltage flashovers.
  • a color picture tube 10 is shown with a front screen 11, a conical funnel part 12 and a rear tube neck 13.
  • an electron gun 14 is attached, which is shown to scale in the side view of FIG. 2.
  • a magnetic deflection system 15 is attached at the transition between the tube neck 13 and the funnel part 12. It is attached to the neck 13 by a sleeve 16 with a clamp 17.
  • the deflection system 15 is aligned in the manufacturing process of the color picture tube 10 to achieve color purity and dynamic convergence and is held in the aligned position by rubber fastening wedges 66 which are pushed between the front end of the deflection system 15 and the funnel part 12.
  • the front end of the deflection system 15 is to be understood as the end facing the screen 11.
  • the terms front and back will be used throughout the description. It should be noted, however, that in the construction of the electron gun 14 in the technical language, instead of the back and front, the terms below and above are used, because the electron gun 14 is assembled and transported as an individual part in this position. In this case, the end facing the screen 11 is referred to as the upper end.
  • the electron gun 14 is shown in dashed lines in FIG. 1 draws and with her in a strongly dashed line a magnetic ring 19 which is attached to it. 1 is that the magnetic ring 19 is attached at a point on the electron gun 14 at which it is no longer covered by the deflection system 15 to the outside. Compared to previously known color picture tubes 10, this has been achieved in that the magnetic ring 19 in the electron gun 14 has been moved further down than was previously the case. Instead, however, a deflection system 15 can also be used, in which the sleeve 16 with the clamp 17 is shortened compared to previously known deflection systems 15. It is also possible to use a deflection system which can be attached to the front of the funnel part 12 and not to the tube neck 13 at the rear. As a result, the sleeve 16 with the clamp 17 can be omitted entirely.
  • the magnetic ring 19 is used to adjust the color purity, convergence and grid in the color picture tube 10. It consists of an iron-cobalt-vanadium alloy and is magnetized from the outside, through the tube neck, so that the color purity, grid and convergence assume predetermined setting values . Such an adjustment is necessary for the majority of color picture tubes, since only very few color picture tubes go through the production process without showing any deviations in convergence, color purity and raster before a correction by a magnetic field has been carried out. However, the magnetic field generated also influences the sharpness of the electron beams, which are affected in their position. Therefore, if the position of the magnetic ring 19 on the electron gun 14 is changed, changes in the Geometry of the electron gun 14 and / or the voltages applied to it can be made.
  • FIGS. 2 to 4 An electron gun 14 is shown in FIGS. 2 to 4, to which a magnetic ring 19 can be easily attached at different points.
  • the electron gun 14 in FIG. 2 has a press glass plate 20 in which contact pins 21 are melted.
  • the contact pins 21 are conductively connected to contact tabs 22.
  • This is followed by a Wehnelt electrode 23, a control electrode 24, a focusing electrode 25, an anode 26 and a convergence pot 27 with contact springs 28.
  • the individual parts of the electron gun 14, that is to say the contact lug 22 and the electrodes 23 to 26, are held together by two glass rods 29 which are heated to softening in the manufacturing process and into which the opening edges 30 of the electrodes are then pressed. Only one of the two glass rods 29 can be seen in the side view.
  • the convergence pot 27 is connected to the anode 26 by spot welding. For the sake of clarity, not all verbs are Applications between contact pins 21 and contact tabs 22 and cathodes and heaters are not shown.
  • a magnetic ring 19 is inserted into the focusing electrode 25, which is shown in dashed lines in FIGS. 1 and 2, since it cannot be seen from the outside in the side view. However, the magnetic ring 19 is shown in more detail in FIGS. 3 and 4.
  • the structure of the focusing electrode 25 is shown more clearly in the exploded view according to FIG. 3.
  • the focusing electrode 25 consists of four electrode parts 32 and an intermediate plate 33.
  • Each electrode part 32 consists of a metal pot with bottom 35, pot wall 36 and opening edge 30.
  • three beam passage openings 37 are recessed, which have a circular shape, as can be seen in the top view according to FIG. 4.
  • a central electron beam 38.1 passes through the central beam passage openings 37.1
  • an outer electron beam 38.2 passes through the outer beam passage openings 37.2.
  • the beam passage openings 37 each lie side by side in an electrode part 32, which leads to an oval configuration of the electrode part 32.
  • the electrodes 23 to 26 are only slightly narrower than the convergence pot 27.
  • the electrodes appear opposite because of the oval embodiment shown in FIG. 4 the circular shape of the convergence pot 27 narrower than the convergence pot.
  • two electrode parts 32 are first placed together with their bottoms 35 and connected to one another by spot welding to form a central part 39.
  • the magnetic ring 19 is then inserted into the upper electrode part 32 of this middle part 39 and fastened by means of notches 40.
  • the notches 40 are made in the pot wall 36 in such a way that they point directly above the magnetic ring 19 into the interior of the electrode part 32.
  • the intermediate plate 33 and an electrode part 32, referred to as the upper part 41, with its opening edge 30 are then placed on the upper opening edge 30 of the middle part 39.
  • the fourth electrode part 32 referred to as the lower part 42, is placed with its opening edge 30 on the lower opening edge of the central part 39. All parts are then held by the glass rods 29 pressed into the opening edges 30.
  • the shape of the magnetic ring 19 and its attachment by notches 40 can be seen in FIGS. 3 and 4.
  • the magnetic ring 19 consists of two identical magnetic ring parts 19.1, which together form an oval ring.
  • the ends of the magnet ring parts 19.1 abut one another with an air gap 43.
  • the air gaps 43 are drawn very large, so that it may appear that the ends of the magnet ring parts 19.1 are not directly adjacent to one another.
  • the illustrated and previously described position of the magnetic ring 19 approximately in the middle of the focusing electrode 25 is particularly advantageous. Layers on the bottom of the lower part 42 or the upper part 41 are less advantageous. If the magnetic ring 19 is inserted into the upper part 41 and fastened with notches 40, there is a risk of high-voltage flashovers between the notches 40 and the anode 26, which is at 25 kV. In the case of an electron gun 14 according to the exemplary embodiment, a voltage of approximately 7 kV is present at the focusing electrode 25.
  • electron guns 14 are also used to a large extent, in which the focusing electrode 25 is shorter and in which only about 4.5 kV are applied to it. However, this is irrelevant for the new color picture tube, since the only thing that is important for it is that the magnetic ring is not covered from the outside by the deflection system 15.
  • the position of the magnetic ring 19 on the bottom 35 of the lower part 42 is therefore generally less advantageous, since in the course of the production of conventional tubes 10 the cathodes (not shown) and thus the Wehnelt electrode 23 and the control electrode 24 are heated to a great extent. There is a risk that the lower part 42 and with it an inserted magnetic ring 19 will also be heated, as a result of which this would change its magnetic properties considerably. However, this danger does not exist with tubes where there is no baking out.
  • the fastening of the magnetic ring 29 in the central region of the focusing element trode 25 is particularly advantageous.
  • the magnetic ring 19 can either be fastened, as shown, to the bottom 35 of the upper electrode part 32 of the middle part 39 or to the bottom of the lower electrode part 32 of the middle part 39.
  • An attachment to the top or bottom of the intermediate plate 33 can also be carried out, for which purpose tabs are advantageously bent out of the edge of the intermediate plate 33 and hold the magnetic ring 19 in place.
  • Such positions and attachment options are not shown in the figures. They are also irrelevant for the new tube, since it is only a matter of the position of the magnet ring 19 in relation to the deflection system 15.
  • the magnetic ring 19 is not covered by the deflection system 15, it is also immaterial whether it is a thin-necked color picture tube with an outside diameter of about 29 mm or a thick-necked tube with an outside diameter of about 36 mm or, for example, a trinitron tube or a multi-beam tube. Oscilloscope tube.
  • an electron gun 14 for a thin-necked tube is shown.
  • the magnetic ring 19 has a long inner diameter of 20.45 mm and a short inner diameter of 9.4 mm.
  • the circular convergence pot has a diameter of 27 mm.
  • the magnetic ring 19 can be attached to the inside or outside of the electron gun and it can consist of one or more magnetic ring parts. Its attachment must be adapted to the type of electrode to which it is attached. It should be noted that plate-shaped electrodes are often used in electron guns instead of the cup-shaped electrodes according to the embodiment shown.
  • the exact embodiment of an electron gun and the magnetic ring 19 attached to it is not significant, the exact embodiment of the deflection system is also irrelevant as long as the magnetic ring is not covered by the deflection system.
  • Deflection systems can thus be used in which both the coil pairs for the horizontal and for the vertical deflection are formed by saddle coils, and also deflection systems can be used which have toroidal and saddle coils.
  • the latter will generally be cheaper, since these combined coils can often be made shorter than deflection systems that only have saddle coils.
  • the condition that the magnetic ring is not covered by the deflection system is easier to meet.
  • the type of attachment of the deflection system is also not the main issue.
  • the particular advantage of a new xathode ray tube 10 is that all of the setting operations for the magnetic ring 19 and the deflection system 15 can be carried out in the simplest way on a common setting device 44.
  • An adjusting device 44 is shown partially schematically in FIG. 5.
  • a slide guide 46 for a tube receiving slide 47 and a guide rod 48 for guiding a deflection system alignment device 49 are mounted on the table 45.
  • the slide guide 46 and the guide rod 48 allow displacements of the tube receiving slide 47 and the deflection system alignment device 49 in the direction of the longitudinal axis 18 of the tube.
  • Deflection system alignment devices are e.g. known from US-PS 3 992 578 or EP-OS O 021 275.
  • a deflection system alignment device 49 similar to the latter device is shown in partial schematic form in FIG. 5.
  • a guide carriage 50 is displaceable on the guide rod 10, to which a bearing plate 50 which is perpendicular to the longitudinal axis 18 of the tube is fastened.
  • the bearing plate 50 has a spherical cap-shaped bearing surface 51, in which a receiving ring 52 is gimbal-mounted. Adjusting forces, represented by an arrow 54, act on the receiving ring 52 via a pin 53, by means of which the cardanic movement of the receiving ring 52 is carried out.
  • the adjustment mechanism is not shown for the sake of clarity. Mechanisms are usually available by which it is possible to operate the adjustment of the receiving ring 52 from the screen side of the setting device 44.
  • Clamping jaws 55 are adjustably attached to the receiving ring 53. These clamping jaws 55 are used to fasten a deflection system 15 in the receiving ring.
  • a deflection system 15 also shown, has a clamping ring 56 at its rear end, which is inserted into a recess in the receiving plate and is held by the adjusted clamping jaws 55.
  • the adjustment mechanism of the jaws 55 is also the Not shown for clarity.
  • the adjusting device 44 also has contacting devices 57, specifically an anode contacting device 57.1 and a neck contacting device 57.2.
  • the anode contact device 57.1 is mounted insulated in a device-fixed manner, but this is also not shown in detail.
  • the neck contacting device 57.2 is connected to the guide rod 48 in a non-displaceable manner via a contacting device holder 58.
  • a bolt guide head 59 At the upper end of the contact device holder 58 there is a bolt guide head 59, into which a sleeve 60 attached to the neck contact device engages.
  • the sleeve 60 is displaceably mounted in the sleeve guide 59 and is pressed forward by the force of a spring, not shown, to the screen side of the adjusting device 44 up to a contact point.
  • a magnetizing device 62 sits in front of the neck contacting device 57.2 at a distance predetermined by spacing pins 61. Such devices are e.g. described in DE-OS 26 12 607 or DE-OS 28 32 667. Such a magnetizing device 62 has magnetizing coils 63, which are shown schematically in dashed lines inside the magnetizing coil. The magnetizing coils 63 generally have a larger number of electrical connections 64, of which only two are shown.
  • the neck contacting device 57.2 is mounted in its position in such a way that a color picture tube placed on the tube receiving carriage 47 is pushed into the setting device with its contacting pins 21 straight into it Neck contacting device 57.2 engages and pushes it slightly against the pressure of the spring in the bolt guide head 59. This counterforce ensures a secure contact and a secure fit of the color picture tube 10 in the adjusting device 44.
  • the anode contact device 57.1 is also mounted such that it just contacts the anode contact 65 attached to the funnel part 12 when the tube 10 is inserted.
  • the magnetizing device 62 is fastened to the neck contacting device 57.2 such that the tube neck 13 penetrates centrally through a recess in the magnetizing device 62 when the tube 10 engages with the contacting pins 21 in the neck contacting device 57.2.
  • the deflection system alignment device 49 holds a deflection system 15 in such a way that a color picture tube 10 can reach with its neck 13 through the deflection system 15 unhindered when it is inserted into the adjustment device 44.
  • the distance 67 between the deflection system alignment device 49 and the magnetization device 62 is selected such that the magnetization device 62 is just above the magnet ring 19 when the deflection system 15 is in the correct position above the funnel part 12. In order to be able to maintain the required distance, it is advantageous if the magnetic ring is at least 5 mm behind the rear end of the deflection system.
  • the screen side of the setting device is understood below to mean the side on which the screen 11 of an inserted color picture tube 10 is located.
  • First of all is the Roeh Renabilityschlitten 47 with the slide guide 46 pulled all the way out of the setting device 44 to the screen side.
  • the clamping jaws 55 are adjusted so that a deflection system 15 with its clamping ring 56 can be inserted into the receiving ring 52.
  • a deflection system 15 is first inserted into the receiving ring 52 and held in place by adjusting the clamping jaws 55.
  • a tube 10 is placed on the tube receiving carriage 47 and pushed into the adjusting device 44 until the contact pins 21 engage in the neck contacting device 57.2 and finally the tube 10 is held in place by the engagement of a not-shown notch in the receiving carriage 47.
  • the anode contact device 57.2 contacts the anode contact 65.
  • the magnet ring 19 is magnetized with the aid of the magnetizing device 62 in such a way that the color purity, screen and convergence are set to predetermined values.
  • the deflection system 15 is then aligned according to predetermined setting criteria.
  • a movement of the deflection system 15 in the direction of the longitudinal axis 18 of the tube and a tilting movement with respect to the longitudinal axis of the tube is possible.
  • movements in the direction of the longitudinal axis 18 of the tube and two directions perpendicular thereto must take place for alignment.
  • the deflection system 15 After the deflection system 15 has been aligned, it is connected to the tube neck 13 via the sleeve 16 with a clamp 17 and to the funnel part 12 by means of fastening wedges 66 placed underneath.
  • Such compensation of errors that can be influenced by both the magnetic ring 19 as well as by the deflection system 15, can be only when using a tube of the type described here agnetring in so the M 19 is not covered by the deflection system 15 to fix at which the magnetization and the alignment of the deflection system can be carried out simultaneously and independently of one another on an adjusting device of the specified type.

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
EP82104948A 1981-06-12 1982-06-05 Tube à rayons cathodiques avec bague magnétique Expired EP0068182B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3123298 1981-06-12
DE19813123298 DE3123298A1 (de) 1981-06-12 1981-06-12 Kathodenstrahlroehre mit magnetring

Publications (2)

Publication Number Publication Date
EP0068182A1 true EP0068182A1 (fr) 1983-01-05
EP0068182B1 EP0068182B1 (fr) 1985-11-27

Family

ID=6134523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104948A Expired EP0068182B1 (fr) 1981-06-12 1982-06-05 Tube à rayons cathodiques avec bague magnétique

Country Status (5)

Country Link
US (1) US4591755A (fr)
EP (1) EP0068182B1 (fr)
JP (1) JPS5814450A (fr)
CA (1) CA1194076A (fr)
DE (2) DE3123298A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833364A (en) * 1984-04-04 1989-05-23 Hitachi, Ltd. Electron gun for color picture tubes having uniquely formed lens apertures
NL8500807A (nl) * 1985-03-20 1986-10-16 Philips Nv Beeldbuis.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345805A1 (fr) * 1976-03-25 1977-10-21 Philips Nv Tube image de television en couleur
GB2020480A (en) * 1978-05-01 1979-11-14 Rca Corp Colour picture tube having electron gun
EP0021275A1 (fr) * 1979-06-21 1981-01-07 International Standard Electric Corporation Dispositif de positionnement du système réflecteur d'un tube à rayons cathodiques en couleur
EP0033438A1 (fr) * 1980-01-30 1981-08-12 International Standard Electric Corporation Dispositif pour régler les faisceaux d'électrons d'un tube d'images en couleurs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992578A (en) * 1976-01-08 1976-11-16 General Instrument Of Canada Ltd. Yoke mounting apparatus
US4370593A (en) * 1980-12-30 1983-01-25 Rca Corporation In-line electron gun and method for modifying the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345805A1 (fr) * 1976-03-25 1977-10-21 Philips Nv Tube image de television en couleur
GB2020480A (en) * 1978-05-01 1979-11-14 Rca Corp Colour picture tube having electron gun
EP0021275A1 (fr) * 1979-06-21 1981-01-07 International Standard Electric Corporation Dispositif de positionnement du système réflecteur d'un tube à rayons cathodiques en couleur
EP0033438A1 (fr) * 1980-01-30 1981-08-12 International Standard Electric Corporation Dispositif pour régler les faisceaux d'électrons d'un tube d'images en couleurs

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 5, Nr. 66(E-55)(738), 2. Mai 1981, Seite 738E55 & JP - A - 56 15530 (TOKYO SHIBAURA DENKI K.K.) 14-02-1981 *
PATENTS ABSTRACTS OF JAPAN, Band 5, Nr. 95(E-62)(767), 20. Juni 1981, Seite 767E62 & JP - A - 56 41652 (TOKYO SHIBAURA DENKI K.K.) 18-04-1981 *

Also Published As

Publication number Publication date
DE3267668D1 (en) 1986-01-09
EP0068182B1 (fr) 1985-11-27
US4591755A (en) 1986-05-27
CA1194076A (fr) 1985-09-24
JPS5814450A (ja) 1983-01-27
DE3123298A1 (de) 1983-01-05

Similar Documents

Publication Publication Date Title
DE69017350T2 (de) Farbbildkathodenstrahlröhre.
DE69020478T2 (de) Farbbildröhrensystem mit reduziertem Fleckwachstum.
DE2608463A1 (de) Strahlsystem fuer eine kathodenstrahlroehre
DE2801916A1 (de) Fernsehbildroehre
DD262525A5 (de) Farbbild-wiedergabesystem
DD217364A5 (de) Farbbildroehre
DE2354338C3 (de) Vorrichtung zur Montage einer aus Röhrensockel und vormontiertem Mehrstrahlsystem gebildeten Sockeleinheit am Kolben einer Kathodenstrahlröhre
DD217363A5 (de) Farbbildroehre
DE69013183T2 (de) Farbbildröhrensystem mit reduziertem Fleckwachstum.
DE69510968T2 (de) Farbkathodenstrahlröhre
DE2506268B1 (de) Ablenksystem fuer farbfernsehbildroehren
DE3218849C2 (fr)
DE2917268C2 (fr)
DE69314127T2 (de) Kathodenstrahlrohr und herstellungsverfahren
EP0068182B1 (fr) Tube à rayons cathodiques avec bague magnétique
DE2630190A1 (de) Einstellbarer ablenkspulensatz fuer eine farbfernsehbildroehre
DE3727849A1 (de) Elektronenkanone und verfahren zu ihrer montage
DE2412541C3 (de) Strahlerzeugersystem für Farbbildröhren
DE3216039C2 (de) Elektronenstrahl-Erzeugungssystem einer Kathodenstrahlröhre
DE2913162C2 (de) In-line-Elektronenstrahlerzeugersystem für eine Farbbildröhre
DE2438234B2 (de) Elektrodenbaugruppe für Mehrstrahlerzeugersysteme und Verfahren zum Betrieb dieser Baugruppe
EP0138264B1 (fr) Tube-image couleurs
DE3123301C2 (de) Vorrichtung zum Einstellen von Elektronenstrahlen einer Kathodenstrahlröhre
DE3423485C2 (de) Kathodenstrahlröhre mit einem Inline-Elektronenstrahlerzeugungssystem, das ein astigmatisches Strahlformungsgitter enthält
DE2745183C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR IT NL

17P Request for examination filed

Effective date: 19830608

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR IT NL

REF Corresponds to:

Ref document number: 3267668

Country of ref document: DE

Date of ref document: 19860109

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

NLS Nl: assignments of ep-patents

Owner name: ALCATEL N.V. TE AMSTERDAM.

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;ALCATEL N.V.

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

NLS Nl: assignments of ep-patents

Owner name: NOKIA GRAETZ GMBH TE PFORZHEIM, BONDSREPUBLIEK DUI

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;NOKIA GRAETZ GMBH

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900626

Year of fee payment: 9

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19900630

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900822

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: NOKIA UNTERHALTUNGSELEKTRONIK (DEUTSCHLAND) GMBH T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST