Abstract: A plasma display panel of the surface discharge type in which a maintaining discharge is generated between electrodes formed on the same substrate, includes first and second insulating substrates separated from each other to form a discharge space therebetween. A spacer having a partition wall in the form of a grid is located between the first and second insulating substrates so as to partition the discharge space into a number of pixels. Electrodes for maintaining discharge are provided on the first insulating substrate, and phosphor is located on the second insulating substrate within each of the pixels. The first insulating substrate is located at a display side.

Abstract: A vacuum pipe for use in a synchrotron orbit radiation device includes a vacuum pipe body made of a thin non-magnetic material surrounding a charged particle beam propagating on an annular path, a port portion cell interposed in the vacuum pipe body surrounding part of the path, and a port mounted on the port wall tangential to the path for introducing radiation. The vacuum pipe body has a smooth inner wall surface and reinforcing ribs on an outer wall surface. A wall of the port portion cell located on an outer diameter side of the path is oblique to the wall of the port portion cell on the inner diameter side.

Abstract: An industrial compact synchrotron radiation source includes, for the purpose of prolonging lifetime of a charged particle beam, beam absorbers made of a material having a low photodesorption yield and disposed inside a bending section/vacuum chamber at at least positions upon which the synchrotron radiation is irradiated, and electrically conductive beam stabilizers disposed at positions inside the bending section/vacuum chamber which are distant by a predetermined distance from an orbit of the charged particle beam toward the outer circumferential wall of the bending section/vacuum chamber.

Abstract: A dispenser cathode includes a tungsten matrix which is impregnated with an active cathode material and coated with a refractory thin film layer metal material along the surfaces thereto, but not including the electron emissive surface of the matrix, thereby improving a heat transfer efficiency from a heater to the electron emissive surface.

Abstract: In a spark plug insulator, an electrically conductive sealant in provided to connect a center electrode to a terminal electrode which are provided within an axial bore of the tubular insulator. The glass sealant being made from the following materials: (a) granular aluminosilicate glass consisting of silica (SiO.sub.2), alumina (Al.sub.2 O.sub.3), alkali metal oxides and alkali earth metal oxides, granular size of the aluminosilicate glass being more than 250.mu.; (b) granular silicate glass, granular size of which is less than 74.mu.; and (c) powdered metal, granular size of which is less than 74.mu., and selected from the group of nickel, chromium and nickel-chromium alloy.

Abstract: A projection cathode-ray tube includes a multilayered interference film interposed between a face plate and a cathode-ray tube. In order to improve brightness in a direction of the normal, then on a face plate, a phosphor layer is composed of a first layer substantially consisting of large size phosphor particles and a second layer substantially consisting of small size phosphor particles. In addition, a phosphor density of the phosphor layer is set from 20 to 50% larger than that necessary to produce a maximum brightness on a cathode-ray tube without the multilayered interference film. The phosphor particles of the phosphor layer are preferably material having a high reflectance.

Abstract: A deflection coil system for a picture tube has a primary deflection coil and an auxiliary deflection coil. The primary and auxiliary deflection coils are each operable to produce a respective magnetic field having a first polarity within a region defined by the coil and an opposite polarity in a second region. Each of the two coils is arranged such that part of the positive polarity field of each coil and all of its opposite polarity field, are in each case coupled to the other coil. This cancels the effects of cross coupling of the primary and auxiliary deflection coils, which are placed in proximity to each other on the same axis, for example on the neck and envelope of a television display tube. At least one of the primary and auxiliary deflection coils may be a saddle shaped deflection coil and has a flat end turn section, substantially defining the opposite polarity area. The primary and auxiliary deflection coils are overlapped on the tube over at least part of this end turn section.

Abstract: An arrangement is provided to correlate random connections made at one end of a multiwire cable with connections that are to made at the opposite end of the cable, in which the different leads of the cable are usually separated, for example, by a distinctive color pattern. The arrangement includes identifying the respective leads by a distinguishing marking, connecting a first end of the leads to a first connector, sensing the distinguishing marking of the lead connected to each contact of the first connector, and, responsive to the first end distinguishing marking, generating a first order identifying signal.

Abstract: A color cathode ray tube is disclosed that includes a glass faceplate having on its inner surface a centrally disposed, rectangular screen. On each of opposed sides of the screen is plurality of discrete ceramic mask support segments to which are secured a tensed foil shadow mask. A process for fabrication is also disclosed.

Abstract: The electric lamp has a quartz glass lamp vessel having tungsten current supply conductors extending through the wall of the lamp vessel to an electric element arranged in the lamp vessel. The current supply conductors have a continuous coating of quartz glass where they extend through the envelope wall from the interior to the exterior of the lamp vessel. The coating forms with the current supply conductor a glass/metal interface forming a gas-tight seal. The glass of the coating adjoining the interface contains thorium, hafnium, chromium, aluminum, titanium, tantalum, magnesium, calcium, strontium, barium, zirconium, lanthanum, scandium, lanthanides, niobium, boron and yttrium. The coating has a very strong adhesion to the metal and; the lamp vessel at the gas-tight seal has a great strength.

Abstract: A target assembly for a projection cathode ray tube is provided wherein the target member is cooled by convective fluid heat transfer occurring within and around a partially hollow support shaft screw. The target member is a solid block of relatively high, thermally conductive material, such as aluminum, coated with an electron beam sensitive material. The shaft screw also comprises relatively high thermally conductive material, such as copper, and has an internal passage leading from a source of cooling fluid, such as dry air, to a annular array of ports located in a distal portion of the supporting shaft screw. The distal portion of the shaft screw has a flaring cross section for increased heat transfer. A bellows encloses the distal portion forming a passageway so as to cause the cooling fluid to also flow along the external surface of the shaft screw. This arrangement adds to the effective convective heat transfer from the shaft screw to the cooling fluid.

Abstract: An indirectly heated cathode incorporated in a gas discharge tube with a discharge current of 0.2 to 0.4 A has a cathode surface area in a range of 10 to 30 mm.sup.2. A cathode cylinder is made of molybdenum, nickel or alloy thereof. A heater coated with alumina for insulation is inserted into the cylinder in such a manner that the distance between the heater and cylinder is 0.1 mm or less, and coil gaps of the heater are set to 0.15 mm or less. Alternatively, the space between the heater and cylinder is filled with alumina. As a result, the ratio of a heat quantity by forced heating to a heat quantity for starting discharge is made 0.3 or less.

Abstract: To improve shock and vibration resistance and heat dissipation of an attaent element (1) coupling the pinch seal (3) of a halogen incandescent lamp (2) to a plastic base (6), the attachment element is formed of two identical half-sections, surrounding the pinch seal in the shape of a cuff (4) and connected to a flange or skirt by an intermediate heat dissipation and shock absorbing portion (7, 11, 12, 13, 14). Preferably, the intermediate portion forms a connecting section, which can be bent into U or double U configuration off the upper region of the flange or skirt portion (8a, 8b), to provide a large heat radiating surface while retaining the pinch seal of the lamp between undulating sheet-metal portions. Preferably, the attachment element is made of unitary sections of high-quality specialty steel.

Abstract: A cathode ray tube comprising a rectangular display window whose thickness increases from the center of the display window along the long and the short axes. The thickness D (x) of the display window along the long axis (x) is defined by:D(x)=D.sub.O +.DELTA.(x);the thickness D(y) of the display window along the short axis (y) is defined by:D(y)=D.sub.O +.DELTA.(y);where D.sub.O is the thickness at the center of the window, and .DELTA.(y) is larger than 1.5.DELTA.(x). The display window thus formed combines a large strength with a relatively low weight. The invention is of particular importance in cathode ray tubes having a length: width ratio which is larger than 4:3, for example 16:9, and in large (.gtoreq.28 inch) tubes.

Abstract: A color picture tube comprising an envelope including a front panel, a phosphor screen formed in the inner surface of the front panel, and an electron gun arranged in the envelope. The phosphor screen includes a light absorbing layer having a plurality of holes and phosphor layers formed in the holes so as to partially overlap the light absorbing layer. The transmittance T of the light absorbing layer, the ratio a of the area of a light emitting region in a portion where the light absorbing layer overlaps the phosphor layers to the area of the phosphor screen, the ratio b of the area of the light absorbing layer to the area of the phosphor screen, and the ratio r of the light emitting region in the holes to the area of the holes satisfy the following relational expression: 1/T.gtoreq.1/2{(rb/a)-[a/(1-b)r]}.

Abstract: The zero-hour emission of oxide cathodes comprising for example BaO.SrO as an emissive material is improved by adding europium oxide or ytterbium oxide. Moreover, addition of lutetium oxide improves the lifetime properties.

Abstract: A means for attaining a predetermined CRT front panel configuration is disclosed as being particularly suitable for use with tensioned-mask CRTs having mask support means affixed to the front panel. A ceramic rail or the like is affixed to the front panel in opposition to the mask support to produce panel deformation forces counteracting those produced by the mask supports. In one embodiment, the panel is deformed more than is ultimately desired and the deformation structures are then ground to produce the desired panel configuration. Repeatability of screen curvature is thereby attained, allowing for interchangeable shadow mask and screen construction of the CRT.

Abstract: An electron gun for a color cathode ray tube having a structure that a plate electrode to be provided within the focusing electrode is given the structure adding the external portion and providing in parallel three elliptical apertures in place of providing the cutout portion at the external portion, a plate electrode to be provided within the acceleration electrode is given the structure providing the cutout portion at the external portion and the vertical axis including the center of external elliptical portion is arranged outside the center axis when the side electron beam enters the main lens is capable of correcting astigmatism and satisfying static convergence. Moreover, rotation and deformation of plate electrode during assembling of electrode can be prevented by providing the straight line portion to the side beam apertures, aberration of lens to be generated at the main lens portion can be reduced and focus characteristic can also be stablized.

Abstract: Four different optical interference films are formed on the outer surface of an incandescent lamp to achieve good color rendering properties at a high color temperature. A first film formed on the lamp includes high and low refractive index layers alternately stacked so that the total number of layers is n (where n is odd number greater than 5) and the optical thickness thereof is 0.12.about.0.17 .mu.m. A second film formed on the first film has the low refractive index layer and the optical thickness of 0.132.about.0.2125 .mu.m, which is calculated by the equation (K+1).times.d/2, wherein K is 1.2.about.1.5 and d is the optical thickness of each refractive index layer of the first film. A third film formed on the second film has at least a high refractive index layer. The total number of refractive index layers of the third film is an odd number of 1.about.(n-4) and the optical thickness of each refractive index layer thereof is 0.144.about.0.255 .mu.m, which is calculated by the expression (K.times.d).

Abstract: An igniter plug having a center conductor, an insulator and a conductive outer shell. The insulator surrounds and supports the center conductor axially within the shell along a substantial portion of the length of the center conductor. The insulator is of reduced diameter toward the discharge end of the igniter and terminates short of the full length of the center conductor. The center conductor extending beyond the insulator terminates short of the discharge end of the igniter and has a discharge electrode of greater diameter than the center conductor affixed to the center conductor end. The electrode terminates at the discharge end of the igniter. A helical compression spring is fitted over the center conductor between the end of the insulator and the electrode to absorb vibrations of the center conductor and electrode.