Abstract: A color CRT has a panel portion with a phosphor screen and a shadow mask structure. The shadow mask structure has a support frame, a shadow mask, and suspension springs attached to corners of the support frame. Studs are embedded in corners of the panel portion for supporting the shadow mask structure. Each suspension spring includes a base member and a spring member. The spring member includes a sloped portion extending axially and bent outwardly, an engagement portion formed with a hole engaged with one of the studs, and a step-like portion provided between the sloped portion and the engagement portion. The step-like portion protrudes the engagement portion toward the stud such that a center of the hole engaged with the stud is displaced toward the skirt portion of the panel portion from an intersection of an axis of the stud with an imaginary plane projected from the sloped portion.

Abstract: An electroluminescent material which can form electroluminescent devices which emit light in the ultra-violet region of the spectrum which comprises an organic metallic complex of a transition metal, lanthanide or actinide and a polyamine ligand particularly gadolinium ethylenediaminetetraacetate sodium salt, Na[Gd(EDTA)] and gadolinium europium ethylenediaminetetraacetate salts Gd[Eu(EDTA)]3.

Abstract: In a scan electrode (2), the widths of transparent electrodes (2b) vary depending on colors so that the relation of the widths (WR0, WG1, WB1) of the transparent electrodes (2bR, 2bG, 2bB) in the Y direction may become WB1>WR0>WG1. Similarly, in a sustain electrode (3), the widths of transparent electrodes (3b) vary depending on colors so that the relation of the widths (WR0, WG1, WB1) of the transparent electrodes (3bR, 3bG, 3bB) in the Y direction may become WB1>WR0>WG1. With this variation in width, a plasma display panel capable of setting the color temperature of white to a proper value can be obtained without control of input gains which would invite deterioration in the number of tones.

Abstract: A field emission cold cathode for use in vacuum tubes. A carbon velvet material is coated with a low work function cesiated salt and bonded to a cathode surface. The cathode will emit electrons when an electric field is applied. The carbon velvet material is comprised of high aspect ratio carbon fibers embedded perpendicular to a base material.

Abstract: An OLED for emitting light at a predetermined peak wavelength, &lgr;. The OLED includes an anode layer, a cathode layer and an electroluminescent layer constructed from an organic light emitting compound that generates light, including light having a wavelength equal to &lgr;, by the recombination of holes and electrons. The electroluminescent layer is electrically connected to the anode layer and the cathode layer and is located between the anode and cathode layers. The OLED includes a first reflector and a second reflector, displaced from one another. The anode layer or cathode layer can serve as one of the reflectors. A spacer layer constructed from a material that is transparent at &lgr; is included between the reflectors and has a thickness that is adjusted such that the optical path length between the first and second reflectors is equal to N &lgr;/2, where N is a positive integer.

Abstract: A light emitting device includes a light source that emits first light in response to an electrical signal, and a fluorescent layer positioned over the light source. The fluorescent layer includes a first fluorescent material which radiates second light and a second fluorescent material which radiates third light. In one embodiment, the second fluorescent material contains europium activated calcium sulfide. In another embodiment, the second fluorescent material contains europium activated nitrido-silicate. In some embodiments, the device includes a light propagation medium which transmits the first, second, and third light as composite output.

Abstract: Mask in a color cathode ray tube, including electron beam pass through holes with bridges connected to non-hole portions between the beam pass through holes in a width direction, wherein a thickness of the bridge of the mask facing an electron gun is formed thinner than other portions of the mask, thereby attenuating howling and enhancing luminance.

Abstract: On an inner wall of a side wall portion of a funnel, a pair of protrusions are integrally formed as glass buildups at positions separated by a predetermined distance from an anode button toward a side of a neck tube. The pair of the protrusions are formed symmetrically on both sides of a virtual baseline extending to an seal edge surface and the neck tube through the center of the anode button. The virtual baseline is an intersection between a virtual plane including a tube axis and the inner wall, and passes through approximately the center of the seal edge surface in the lengthwise side.

Abstract: An electrode structure for a plasma display panel has a plurality of unit discharge sections arranged in a discharge space. The electrode structure includes a pair of bus electrodes, and a pair of branch electrodes respectively extending from the bus electrodes in each of the unit discharge sections. The bus electrodes each extend along a row of the matrix array of the unit discharge sections. The branch electrodes each obliquely extend across a discharge region in each of the unit discharge sections so that the discharge gap defined between the branch electrodes is skewed with respect to a column of the matrix array of the unit discharge sections.

Abstract: The electric lamp employs a lamp vessel (1), which is transparent to visible light and which accommodates a light source (2). The lamp vessel (1) is covered with a combination of a light-absorbing medium (6) and an optical interference film (5) employing layers of alternately a first layer of a material with a comparatively high refractive index and a second layer of silicon dioxide. A spectral transmission T of light transmitted by the light-absorbing medium (6) changes from T≦0.15 to T≧0.75 in a wavelength range having a width &lgr;≦50 nm. The variation in reflection R amounts to less than 10% in the wavelength range 400≦R≦690 nm, the reflection R and lies in the range 50≦R≦90%. In operation, the electric lamp emits colored light in the transmission mode and has a substantially color-neutral appearance in the off state.

Abstract: A low-pressure discharge lamp with a double spiral shaped discharge tube including two spiral shaped tube portions. The tube portions define a central axis of the discharge tube. A cold chamber portion connects the ends of the spiral shaped tube portions. The cold chamber portion has a first transversal dimension substantially perpendicular to the central axis which is larger than the diameter of the tube portions. The cold chamber portion further has a second transversal dimension substantially parallel to the central axis. The second transversal dimension of the cold chamber portion substantially corresponds to the diameter of the tube portions.

Abstract: A lamp assembly comprised of a waterproof casing, a lamp disposed within the casing, and a source of electrical current electrically connected to the lamp, from the source to the lamp. The lamp, when operated with a 12 volt power supply, consumes less than 40 watts The preferred lamp used in the assembly is described and claimed in U.S. Pat. No. 5,418,419.

Abstract: A cathode structure for an image intensifier tube operates to extend the spectral range of an image intensifier to the short wavelength infrared (SWIR) range of the electromagnetic spectrum, which is between 1.0 to 1.75 &mgr;m. The cathode structure utilizes a multi-layer structure consisting of a layer of GaSb disposed upon a layer of GaAs. The layers form a heterojunction therebetween where the GaSb material absorbs radiation and the GaAs is for emission characteristics. The doping profiles in each material are used to maximize the effects of band gap offsets of the heterojunction as well as provide a nearly flat conduction band profile for the cathode structure. The condition of nearly flat conduction band is enhanced by the use of blocking contacts at the emission surface of the cathode, where a bias is applied.

Abstract: A spark plug having a ceramic insulator, which contains a precious-metal center electrode in a cylindrical, axial opening, at the end on the side of the combustion chamber. A contact pin is arranged in the cylindrical opening, downstream from the precious-metal center electrode, in the direction of the insulator end away from the combustion chamber. To reduce corrosion, the surface of the contact pin is provided with a layer of one or more metal aluminides.

Abstract: It is an object of this invention to provide a shadow mask material for use in a color picture tube excellent in tensile strength and excellent in high temperature creep strength, a shadow mask and a picture tube incorporating the same. For this purpose, the shadow mask material according to this invention uses a low carbon alloy steel sheet containing from 0.05 to 2.5% by weight of Cu and 0.001 to 0.4% by weight of P, or from 0.05 to 2.5% by weight of Cu, from 0.001 to 0.4% by weight of P and from 0.01 to 1.75% by weight of Ni.

Abstract: An apparatus for cathodic arc coating. The apparatus includes: a vacuum chamber which includes an anode; a power supply; and a cathode target assembly connected to the power supply. The cathode target assembly includes a cathode target and a target holder. In the preferred embodiment, a conductive interlayer is located between the cathode target and the target holder, and a cooling block is in contact with the cathode target.

Abstract: A multi-filament light bulb which is lightable one filament at a time includes a sealed glass envelope, a base fixed to the envelope and a plurality of filaments supported within the glass envelope. The bulb also includes a ring-shaped insulator having one or more electrical contacts electrically isolated from one another disposed thereon. The ring-shaped insulator is disposed in the base of the bulb with each of the electrical contacts connected to one of the filaments. A plurality of radially depressable metal tab switches are disposed in the base of the bulb adjacent to the contacts on the ring insulator for completing an electrical circuit to thereby illuminate one of the filaments.

Abstract: A spark plug with a metallic housing (10) is proposed, which has an insulator (11) embedded in the housing (10), in which a rod-shaped internal conductor device is disposed. The internal conductor device has a contact pin (13), a current-limiting erosion resistor (17), and a central electrode (14). A sealing material (16) secures the central electrode (14) in a sealed fashion in the insulator (11). The temperature resistant sealing material (16) essentially contains at least one metallic component and at least one ceramic component with a low thermal expansion, wherein the metallic component has a melting temperature that is higher than the operating temperature.

Abstract: A chip light-emitting device includes a baseboard LED elements different in color of emission light are respectively mounted on two electrodes formed on a surface of the baseboard. A reflector has an aperture in an oval form as viewed in plan and placed on the baseboard such that the LED elements are at a center surrounded by a slant surface of an inner wall of the aperture. The slant surface includes two reflection surfaces continued almost at a center of the reflector with respect to a thickness direction.

Abstract: A vertical electrode plate having three openings formed in-line through which three electron beams pass respectively is provided only inside a focusing electrode out of the focusing electrode and a final accelerating electrode. A horizontal electrode plate that is substantially parallel to an in-line plane extending toward the focusing electrode is formed at least one of above and below openings at the bottom of a shielding cup, only inside the final accelerating electrode. By setting the height h of the horizontal electrode plate optimally, it is possible to correct a horizontally-elongated distortion of a spot shape in edge portions of a screen, caused by a self-convergence magnetic field of a deflecting device. In this manner, a color display tube that achieves an image display with a high resolution can be provided.