Abstract: An improved magnetic fine deflection system, for use in an electron beam optical system of the type having a single plate matrix lens, utilizes an orthogonal set of stacked deflection-field-generating conductors, with one stacked orthogonal pair of sheet conductors being positioned behind a target, upon which the electron beam is to be focused and deflected, and with a second orthogonal pair of sheet conductors positioned in front of the multi-apertured single plate matrix lens and having apertures in registration with the lenslets. The improved magnetic fine deflection system is utilized in an electron beam optical system having first means for forming a narrow beam of electrons and coarse deflection means associated with the first means for scanning the electron beam to each lenslet of the single plate matrix lens, for passage therethrough and into the magnetic fine deflection field.

Abstract: A phosphor screen for a post-focusing type color picture tube comprising a faceplate, a phosphor layer on the faceplate, a metal back layer on the phosphor layer and a secondary electron emission suppressing layer on the metal backed phosphor screen, in which the thickness of the metal back layer and the density of the secondary electron emission suppressing layer take particular values for effective suppression of emission of secondary electrons from the phosphor screen.

Abstract: A low pressure gas discharge lamp having a body present in the discharge vessel which consists of a longitudinal support which extends into the longitudinal direction of the vessel, the support being provided with fibers which are distributed over the space within the discharge vessel and extend substantially transversely from the support.

Abstract: In a fluorescent display panel comprising a grid member comprising, in turn, a pair of grid leads extended integrally from a grid frame to which a grid is attached, each grid lead is fixed to a substrate of the panel. When driven in a time division fashion, the panel produces audible noises disagreeable to the ear. In order to reduce the noises, at least one of the grid lead pair is deformed perpendicularly of the grid at its portion between the grid frame and the portion at which the grid lead is fixed to the substrate. The deformation may be an indent directed either away or towards the substrate, with the thickness of the grid lead rendered at the position of the indent. The deformation may alternatively be a bend, with the thickness kept uniform. Also in the latter case, an indent is formed in the grid lead.

Abstract: This disclosure depicts an arc-suppression means for use in cathode ray tubes having an electron gun and ancillary electrical circuits susceptible to damaging electrical arcing currents, and wherein getter means are used to capture residual gases in the evacuated envelope of the tube. The arc-suppression means is electrically resistive and is connected in an electrical path between the gun and a high voltage source, and its surface is physically exposed to a deposit of getter material when the getter is flashed. The arc-suppression means includes shadowing means for shadowing at least portions of the exposed surface from a deposit of the getter material to prevent the creation of an electrically conductive shorting path capable of permitting an arc to bypass or substantially nullify the arc-suppression means.

Abstract: A source of hydrogen ions is disclosed and includes a chamber having at one end a cathode which provides electrons and through which hydrogen gas flows into the chamber. Screen and accelerator grids are provided at the other end of the chamber. A baffle plate is disposed between the cathode and the grids and a cylindrical baffle is disposed coaxially with the cathode at the one end of the chamber. The cylindrical baffle is of greater diameter than the baffle plate to provide discharge impedance and also to protect the cathode from ion flux. An anode electrode draws the electrons away from the cathode.The hollow cathode includes a tubular insert of tungsten impregnated with a low work function material to provide ample electrons. A heater is provided around the hollow cathode to initiate electron emission from the low work function material.

Abstract: This disclosure depicts a television picture tube subject to an undesired build-up of localized high-potential static charges and high-potential charge retention. The tube is characterized by a resistive coating deposited on at least one of the normally uncoated outer areas of the tube and in contact with the conductive coating to disperse any static charges by means of a flow of electrons through the resistive coating. The "rush" of electrons which may cause an annoying crackling sound upon tube turn-on and turn-off is attenuated thereby to suppress the sound, and any residual high-potential charges remaining after turn-off are discharged to ground.

Abstract: A storage target capable of storing an electric charge corresponding to an input signal and also converting the stored charge image into a visible form is provided on the inner wall of a faceplate closing the opening of a funnel constituting an evelope of a direct-viewing storage tube. The storage target includes a collector electrode formed on the inner wall of the faceplate; a plurality of fluorescent dot islands provided in contact with the collector electrode; and a dielectric material formed between those of the fluorescent dot islands which are arranged on the outermost peripheral edge of the storage target and a sealed portion joining the opening of the funnel and the faceplate so as to face the collector electrode and surround the effective area of the storage target, thereby preventing the luminescence of that portion of the target which is positioned around the peripheral edge of the effective area of the storage target.

Abstract: An evacuated envelope includes spaced substantially parallel front and back walls, and a plurality of spaced, parallel support walls between the front and back walls and forming a plurality of channels. An electron gun structure at one end of the channels directs at least one beam of electrons into each channel. In each channel is a focusing guide comprising at least two substantially parallel guide grids which confine the electrons into a beam. At the end of the focusing guide opposite the gun structure is a beam collector structure which collects the beam and subsequently generates a signal which is processed and used to adjust the uniformity characteristics of each beam.

Abstract: A storage target having a collector electrode formed in a striped or latticed pattern on a storage substrate which is fabricated from a single crystal of electrically insulating material. Preferably, the storage substrate is of a single rhombohedral crystal of aluminum oxide or of a single isometric crystal of magnesium oxide, spinel, or calcium fluoride.

Abstract: A color television picture tube comprising a glass cone portion, a glass window portion and a metal screen cone. The metal screening cone is located within the volume defined by the glass cone portion and the glass window portion. At least a major portion of the metal screening cone is distanced away from the glass cone portion. An evaporable getter device comprising two parallel linear channel holders having U-shaped cross-sections, each containing a source of evaporable getter material is placed between the metal screening cone and the glass cone portion. Evaporable getter device is mounted on the metal screening cone by means of support legs. Getter material vapors from the getter device evaporate in a direction substantially parallel to a line formed by the nearest intersection of the glass cone portion and the glass window portion.

Abstract: The proposed electron beam device with variable beam energy comprises a focusing system intended to ensure constant focusing of an electron beam on a screen. The focusing system includes two electrodes successively arranged across the path of the electron beam. The first of these electrodes is electrically coupled to an accelerating electrode intended for electron beam shaping; the second electrode is connected to the screen. Interposed between the accelerating electrode and the first electrode is a variable focal power lens intended to maintain constant focusing of the electron beam regardless of changes in the energy of its electrons. The proposed device features a high resolution and a simple control circuit.

Abstract: A color picture tube having a shadow mask provided with a plurality of vertical aperture rows arranged as horizontally juxtaposed to one another, each vertical row comprising the electron beam transmissive apertures vertically arranged in line with a predetermined pitch P.sub.y. With a view to making possibly occurring moires imperceptible, the arrangement of the apertures are made such that, when spatial deviation in the vertical positions between any two apertures in the horizontally adjacent aperture rows is represented by .DELTA.y, there may be included combinations of at least two different type aperture rows of different deviations .DELTA.y which satisfy the following condition ##EQU1## at least when n is equal to 1, 2, 3 or 4 and k is an odd number smaller than 2n.

Abstract: In a color TV bulb formed with a panel, a peripheral panel skirt integral therewith, a funnel portion adapted to mate therewith, a frame and aperture mask adapted to be mounted in said frame and secured in spaced relation with the panel; a supporting structure for the aperture mask and frame including peripherially located outwardly extending spring lugs and spring clips attached to the frame respectively operative for xy orientation and Q spacing of the aperture mask. The panel skirt is formed with a selected number of V grooves located each for receiving a corresponding one of the spring lugs and a ledge face spaced away from the inside surface of the panel to cooperatively engage with and support the spring clips. A forward surface of the funnel engages the spring clips to urge same against the ledge face such that the xy orientation and Q spacing of the aperture mask are fixed relative to the panel.

Abstract: This disclosure depicts a television cathode ray picture tube having a plural-beam electron gun for projecting in superimposition on the picture imaging screen of the tube at least two electron beam spots. The gun includes at least one aperture electrode having an aperture for passage therethrough of each of said beams. The beams are subject to a first-order aberration attributable to the aperture electrode resulting in the astigmatizing, and consequent distortion of, the beam spots. This astigmatizing is due to the coalescing of electric field vectors contiguous to each aperture with the vectors of at least one adjacent aperture. The improvement comprises shielding means interposed between the apertures comprising wall means. The wall means are effective to mutually shield the apertures and isolate the electric field vectors to ameliorate the first order aberration.

Abstract: Disclosed is a color display tube having a color selection electrode comprised of a metal plate having a large number of apertures and a plurality of elongated conductors insulated from the plate which extend across the apertures and divide them into two substantially symmetrical halves. Upon application of a suitable potential difference between the conductors and the plate, electric fields are produced in the apertures which deflect the portions of the beam passing through the respective aperture halves towards each other forming on the display screen a single, overlapping electron spot of a width smaller than that of the aperture.

Abstract: For obtaining an improved characteristic, particularly an improved after-image characteristic of image pickup tubes, a target of the tube is produced by at first forming a striped transparent conductive film on a substrate such that the angle formed between the surface of the substrate and the edges of cross-section of the film falls within a range below 20.degree., and then forming a photoconductive film on the striped transparent conductive film. In order to control the angle formed between the surface of the substrate and the side edges of cross-section of the transparent conductive film, at first a mask of a predetermined pattern is formed on the transparent conductive film with a posi-type photosensitive material, and is subjected to an ultraviolet ray. The mask is then heat treated so that the side edges of the mask may be suitably tapered. Finally, the transparent conductive film is formed by sputter etching.

Abstract: An electrode structure for a halogen leak detector is disclosed in which the cathode portion is provided with a hollow metal tube through which air or other cooling fluid is passed. This hollow metal tube may also serve as the cathode electrical connection and for mechanical support. Since halogen leak detector systems are typically provided with air pumps for the passage of ambient air through the detector, it is a simple matter to also pass a stream of ambient air through the hollow metal tube in the cathode in order to maintain the cathode at a lower and more controlled temperature, thereby increasing the sensitivity of the detector and prolonging its useful life.

Abstract: A fluorescent screen formed on the inner surface of the face plate of a color picture tube comprises a plurality of spaced apart light absorbing layers between adjacent matrix windows, light reflection layers formed on the light absorbing layers, stripe shaped three color phosphors respectively formed between adjacent light reflection layers to fill the matrix windows, and a metal back layer covering the light reflection layers and the three color phosphors. Each light reflection layer takes the form of a triangular section having a height substantially equal to the thickness of the three color phosphors and the opposite sides of the triangle incline toward the sides of the matrix windows. The width of each window is equal to the difference between a maximum electron beam diameter and one half the difference between the pitch of the windows and the width of each window.

Abstract: In an electron-optical system of the mixed field type in which magnetic and electric fields are respectively operative to project a focused image of an object of the system upon a target structure and to simultaneously scan such image across the target structure, beam landing errors are eliminated by dimensioning and locating the solenoid for generating the magnetic field and the electrostatic yoke for generating the electric field so that the landing errors due to non-uniformity of the electric field, for example, by reason of field-free regions at the opposite ends thereof, are substantially cancelled by landing errors due to non-uniformity of the magnetic field, for example, as constituted by flare field regions at the opposite ends of the magnetic field.