Abstract: The electric lamp has a lamp cap (6) with a contact member (9) at the base portion (8), a current supply conductor (4, 5) being passed to the exterior through said contact member. The current supply conductor (4, 5) is welded to said contact member (9) by a separately supplied solidified drop of essentially copper, nickel, copper/nickel, chromium/nickel/iron or aluminium containing 1-10% by weight of a metal addition.

Abstract: A tri-model thermal switch for use in a preheat-type discharge lamp. The thermal switch includes a glass bulb, first and second electrical leads sealed into and passing through the glass bulb, and a bimetallic element disposed within the bulb and having first and second end portions. The first end portion of the bimetallic element is affixed to the first electrical lead while the second end portion of the bimetallic element is formed to be in contact with the second electrical lead at a first elevated temperature higher than ambient temperature. The bimetallic element is spaced from the second electrical lead at ambient temperature and at a second elevated temperature higher than the first elevated temperature. During lamp operation, the thermal switch produces a double hot spot on the cathode by electrically shorting the cathode lead-in wires. As a result, the electrode temperature is lowered sufficiently to cause an improvement in the lumen maintenance and life of the lamp.

Abstract: A shadow-mask color picture tube has an auxiliary deflecting device located between the deflection yoke and shadow mask. In a picture tube with in-line electron guns, the auxiliary deflection device includes a pair of deflection coils, for example, for deflecting the electron beams in the horizontal direction. In a picture tube with delta electron guns, the auxiliary deflection device includes two pairs of deflection coils, for example, for deflecting the electron beams in both the horizontal and vertical directions. The auxiliary deflection devices deflect the electron beams by an amount that closely aligns them with the doming direction of the shadow mask, thereby reducing landing error and improving color purity.

Abstract: The inventive apparatus has two plastic supports (2) mounted, in registrer with the top and bottom sides of the yoke body (1), and crown (1a), in which they are structurally incorporated. Preferably, the plastic supports are rectangular with rounded edges. Each support has hooks (3) to receive the compensation coils which are snap-fitted thereon. Also, each support has pins (5) for fastening the coil terminals 4a, 4b. The pins also support a damping cell when required. The cell includes a registor (6) connected in series with a capacitor (7). The compensation coils (4) can have a variable number of turns, depending upon the compensation which it is to achieve.

Abstract: A vacuum-tight envelope (601) having a terminal element (610) bearing the envelope's output window. An output screen (605) is glued to the inner face of the output window by a first glue (608) having the same refractive index as the output window. The envelope's terminal element is made unitary with a (611) of the envelope by vacuum-tight mounting (609). An optional anti-reflection coating (674) may be deposited directly onto the external face of the output window.

Abstract: An integrated grid (G1/G2) assembly having enhanced mechanical strength and rigidity is provided for use in an electron gun assembly of a cathode ray tube (CRT). In the integrated grid assembly, the first and second grids (35 and 40, respectively) are fixed in relationship to one another, both axially and radially, by means of an insulating element (50) and a collar element (55). Brazed joints are preferably provided at the interface of the insulating element (50) with the second grid (40) and the collar element (55) to enhance the mechanical strength and rigidity of the assembly. An integrated grid (G1/G2)/anode assembly may be provided by mounting anode assembly (45) fixedly with respect to second grid (40) by means of second insulating element (60) and second collar element (65). Methods for assembling the integrated grid assemblies are also disclosed.

Abstract: A cathode-ray tube has an electrically conductive film formed over the surface of the panel portion of the tube, a transparent, electrical insulating layer formed on the conductive film and an electrode unit formed on the electrical insulating layer. The electrode unit is connected with a common potential line. A capacitor formed between the anode of the cathode-ray tube and the conductive film and a capacitor formed by the conductive film insulating layer and the electrode unit are electrically in series connection as viewed from a source for the voltage to be applied to the anode.

Abstract: An electric lamp is provided including a sealed outer glass envelope having an arc tube therein supported from the stem of the outer glass envelope by a support frame. The support frame is attached to the stem by a stem clip to which the support frame is welded. An inert refractory fibrous material is disposed between the stem and the stem clip to provide resiliency and a friction fit therebetween.

Abstract: A color cathode-ray tube-yoke combination comprises a color cathode-ray tube having a glass envelope and a yoke for producing magnetic fields positioned thereon. At least one semi-flexible corrective magnet is attached to a curved portion of the envelope. The novel corrective magnet is improved over prior corrective magnets by the inclusion therein of at least one portion of reduced thickness which increases the flexibility of the corrective magnet to provide conformity to the curved surface portion of the envelope.

Abstract: An improved image sensor made of photosensitive semiconductor materials with a number of pixels each including an n-type semiconductor layer, a p-type semiconductor layer and an intrinsic semiconductor layer disposed between the n-type and p-type layers. The n-type and p-type layers are made from a semiconductor material having a high resistivity. The high resistivity of the n-type layer and the p-type layer functions to prevent crosstalk currents from passing between the pixels.

Abstract: A multi-step focusing type electron gun is disclosed which includes a cathode, electrodes G1 and G2, and electrodes G3, G4, G5, G6, G7, and G8 for forming two unipotential auxiliary lenses and a bipotential major lens in the main lens, characterized in that the electrodes G4, G5, G6, G7 are so constituted as to satisfy some specific formulas. The electron gun can reduce the size of the beam spot and the size of the halo formed around the beam spot. Further the electron gun improves the spherical aberration, and provides the flexibility in designing for different purposes, as well as improving the image quality on the screen.

Abstract: A common ground terminal is adapted for use with wedgebase lamp bulbs of either the single filament of dual filament type in a single filament lamp socket. The common ground terminal has a pair of opposed, upper and lower spring contact arms which biasingly engage opposite sides of a wedgebase when it is inserted into the space between the spring contact arms. The lower spring contact arm has a second spring tab which accommodates the presence of a second contact wire when the dual filament type of wedgebase lamp bulb is used.

Abstract: A Christmas tree light consisting of a bulb with two leads extending from its lower end, a hollow seat, and a separation wedge. The hollow seat has an upper seat portion and a lower seat portion. A slot runs lengthwise along the lower end of the lower seat portion for receiving and frictionally engaging with the separation wedge.

Abstract: A single pin base for a fluorescent lamp comprises first and second base members. The first base member includes a shell, a first disk of insulating material secured to or formed from the shell, and a contact member centrally mounted on the disk and adapted to receive the lead-in wire from one end of the fluorescent lamp. The second base member includes a second disk of insulating material and a single contact pin centrally mounted on the second insulating disk. A metal disk is located within and secured to the single contact pin and is provided with an aperture formed therein for receiving the contact member of the first base member and for frictionally engaging the contact member so that the second base member is retained on the first base member.

Abstract: The object of the present invention is to provide a dispersion-type electroluminescence device low in current density, excellent in luminous efficiency and less in uneven luminance. For attaining this object, dented portions present in an upper part of a luminous layer of dispersion-type electroluminescence device having a back electrode layer and, laminated thereon, an insulator layer, a luminous layer and a transparent electrode layer are coated with a resin composition having a dielectric constant which is lower than that of a dielectric resin composition used for formation of the luminous layer which is 5 or higher and a transparent electrode layer is than laminated thereon.

Abstract: A spark plug containing a resistor which is a sintered body made from a mixture comprising coarse glass particles and fine glass particles, coarse ceramic particles and fine ceramic particles, and carbon black in special proportions is improved in noise signal suppression effect.

Abstract: The invention relates to a high-pressure sodium discharge lamp provided with a discharge vessel having a longitudinal axis 1 and a diameter D. The discharge vessel is enclosed by an outer envelope. Within the outer envelope a starting circuit is arranged, which has at least a glow starter. According to the invention, the outer envelope is a clear outer envelope and the glow starter is arranged so as to be laterally displaced over a distance of at least D/2 with respect to the discharge vessel. Moreover, the glow starter is shielded for the major part with respect to the discharge vessel by means of a heat shield.

Abstract: Alkali metal source comprises a powder of silicon or germanium grains having a shell of a compound of silicon or germanium and the alkali metal.

Abstract: An incandescent lamp comprises a glass envelope, a filament supported by constricted portions of the glass envelope, lead rods extending from both ends of the filament, tapered constricted portions at both ends of the glass tube to provide sealing portions by which the lead rods are surrounded respectively, and contacts connected to the outer ends of the lead rods respectively. The sealing ports are formed in such a manner that their outer diameters are equal to or smaller than those of the respective contacts, cylindrical bases are arranged so as to enclose the respective contacts, portions of the lead rods which project out of the sealing portions, and the sealing portions, and to be in contact with the respective tapered portions following the sealing portions, and fixing cement is filled in the bases.

Abstract: A preheat-type fluorescent lamp, such as a negative glow discharge lamp, includes a cathode contained within an evelope and supported by a pair of lead-in wires. A thermal switch is located within the evelope shunting the cathode and electrically coupled to the supporting lead-in wires. Closure of the thermal switch during lamp operation produces a double hot spot on the shunted cathode. As a result, the cathode temperature is lowered sufficiently causing an improvement in the lumen maintenance and life of the lamp.