Abstract: A capsule containing a precise amount of a substance such as mercury is mounted in an electrode mount assembly on a temperature sensitive member. At elevated temperatures the capsule is moved away from lamp components by the temperature sensitive member to preclude inadvertent release of the mercury into the sealed lamp. After the lamp has cooled, the temperature sensitive member urges the capsule into biased engagement with a cutting wire so that upon supply of current thereto the capsule is melted and opened to release the mercury.

Abstract: A tension shadow mask CRT front assembly includes a flat strip shadow mask having a first wire and a second wire in contact with the strips of the mask on opposite sides of the mask for damping strip vibration. The two wires may be spaced apart on opposite sides of the mask, or lie directly opposite. If the wires are directly opposite, they may be formed from a single wire welded into a loop. The wires are held in tension by a spring attached to, and extending from, the inner surface of the faceplate.

Abstract: A low pressure discharge lamp having a tubular discharge vessel (1). At each of its end portions (2, 3) the vessel (1) is fused to a respective metal tube (5) having an uncovered outer surface outside the vessel. A sealed glass tube (6) is fused to the metal tubes (5). Ignition aids (18, 28, 40) may also be present. The simple construction of the lamp permits manufacture and high lamp quality, even at long lengths and/or small diameters of the discharge vessel. The lamp may have an ionizable filling of rare gas or may also contain mercury. A fluorescent powder may also be present in the discharge vessel. The lamp (72) and a luminaire (70, 71) mounting the lamp may be used for display or signalling purposes.

Abstract: A color selecting structure for a TRINITRON cathode-ray tube, in which color phosphor stripes are provided and a single electron gun emits three beams, capable of minimizing vertical fringes that deteriorate the quality of a picture displayed on the screen and of attenuating the vibration of a FAG (framing aperture grille plate), includes a thin plate having a plurality of tape-shaped grid (2a) elements and apertures (2a), and fine wires (3) extended across the surface of the aperture grille plate so as to apply a pressure in the range of 6.73.times.10.sup.-6 lbf., 2.24.times.10.sup.-5 lbf. to each grid element (2a).

Abstract: A flat display apparatus has a substrate, a plurality of pointed cathodes formed on the substrate, a planar anode facing toward the cathodes via a vacuum space, and a light emitting layer on the side of the anode which is opposite from the cathodes. The anode has a plurality of projections in positions corresponding to the cathodes. The anode projections reduce electron scatter to improve light emission from the light emitting layer. In another embodiment of the flat display apparatus, a plurality of electron sources are disposed on the substrate and positioned relative to one another in an alternately staggered vertical positional sequence toward a light emitting member so that electrons are successively amplified.

Abstract: The capped electric lamp has a lamp cap with a central cavity which provides access to a first contact member, a first portion of the lamp vessel being fixed in this cavity. A second conductor is connected to a second contact member separate opening. The first contact member is centrally positioned, the second contact member is positioned on a concentric cylinder. The lamp cap has projections for fixation of a connector. A connector for the lamp has a central first contact and a second contact on a cylinder concentric therewith, as well as a fixing device for cooperating with the lamp cap for the purpose of fixation. The connector may be coupled to the lamp cap in several relative rotational positions.

Abstract: A display or other radiation-emitting device has an array of vertical ballistic transistors which produce electrons that flow into overlying phosphor regions. Light produced by the phosphors is focussed by an array of convex lenses above the phosphor regions to provide a high intensity display with limited viewing angle.

Abstract: A spark plug with a central electrode insulated against the plug thread having ground electrodes electrically connected to the plug thread, in which a prism-shaped cap is arranged at the end of the central electrode in the combustion chamber and the ground electrodes are parallel to the sides of the prism of the cap. The ground electrodes consist of at least one holder of a base or semi-precious metal on which a thin electrode layer of platinum or a platinum alloy is arranged facing the cap of the central electrode. The ground electrodes are configured in the form of a V-shape or a Y-shape.

Abstract: A discharge tube for emitting light of the present invention includes an inner bulb including a hollow portion for defining therein an arc discharge chamber which encloses therein gas for emitting light, the inner bulb further including a pair of electrodes and a pair of metal members each of which is connected to a corresponding one of the pair of electrodes, the pair of electrodes being projected in the arc discharge chamber from the inner bulb and the pair of metal members being projected outwardly of the inner bulb, the hollow portion having an outer diameter of a first value and an outer tube for sealingly enclosing therein the inner bulb, the outer tube including a small-diameter portion having an outer diameter of a second value which is equal to or smaller than the first value, wherein the inner bulb is held in the interior of the outer tube, with a gap being formed between an outer surface of the inner bulb and an inner surface of the outer tube, in such a manner that the outer tube supports the meta

Abstract: Internal and external magnetic screens made of magnetic permeable material are added between the discharge chamber and the internal and external sources of magnetic field, respectively. A longitudinal gap is maintained between the screens and their respective internal and external poles, that does not exceed half the distance between the internal and external poles. The exit end part of the internal magnetic screen is placed closer to the middle point of the accelerating channel than the internal pole. The walls of the exit end part of the discharge chamber are constructed with an increased thickness, and extend beyond the planes that the poles lay. The magnetic screens can be located with a gap relative to the magnetic path if connected by a bridge between the screens. The discharge chamber, the anode, and the magnetic system are symmetrically designed relative to two mutually perpendicular longitudinal planes.

Abstract: An electric lamp has a lamp vessel provided with a seal, fixed to a first end of a metal sleeve. In a second end of the sleeve an insulator body through which a contact member extends is rigidly secured. To that end the inner channel of the sleeve has a constriction cooperating with the insulator body at a second end face thereof, and an inward projection from the sleeve into a recess in a side face of the insulator body. The recess extends to a first end face of the insulator body. The lamp is of an easily producible construction.

Abstract: An electric lamp arrangement includes a reflector (10) having first and second mirror walls (12 and 22), which in axial sections are curved according to circular arcs (13, 23), the centers of which lie in an area between lines (15, 16) enclosing angles .beta. and .gamma. with a plane P defining the largest diameter (d), and in an ellipse-shaped area Q, respectively. The reflector has a relatively small, light-emitting window (30) of at most 0.7 d, disposed opposite a lamp base (1). An electric light source (3) is disposed within the reflector (10) near plane P and an axis (11). The reflector (10) may be integral with a lamp vessel (5) to give a reflector lamp or a pressed-glass lamp. Alternatively, the light source may have an envelope and may be secured within the reflector to constitute a lamp-reflector unit. The reflector effectively shapes radiation emitted by the light source into a wide beam of high intensity.

Abstract: Disclosed is a cathode assembly of an electron gun for a color cathode ray tube in which a heater support structure is improved. The cathode assembly of an electron gun for a color cathode ray tube comprising three cylindrical sleeves which are arranged in an in-line type, a base metal which is located at the upper end of the sleeves, and of which the surfaces are coated with thermal electron emitting material, a heater which is located on the inner portion of each of the sleeves and having two parallel terminals which are exposed out of the sleeves, and a heater fixture block in which three pairs of welding terminals corresponding to the three heaters and two signal lines for forming an electrical circuit along with the welding terminals are provided in the lateral surface and two parallel bead glasses for supporting the sleeves and the block. The heater support structure is simple and the stability thereof is improved. Also, the heater is easily assembled to have a high productivity.

Abstract: A multiple section photomultiplier tube. The tube is constructed essentially as a matrix of several independent tubes in one envelope. The photocathode of each individual section of the tube is formed into an independent surface, and the photocathode to dynode spacings are isolated by a configuration built with separator electrodes which connect to photocathode boundary dividers formed in the faceplate. The boundary dividers also isolate the independent photocathode regions. The boundary dividers can be either slots into which the separator electrodes fit or ribs with which the separator electrodes are engaged.

Abstract: An immersible lamp for use in a photochemical reactor has an outer bulb (10) surrounding an inner discharge tube (1) which can be cooled by a flow of inert gas such as nitrogen from a supply chamber (23) though hollow guide rods (6, 7) into a remote end (27) of the outer bulb, and back out through an outlet hole (18) and an exhaust chamber (24). In order to facilitate swapping out of the discharge tube (1) in the event of burnout or changes in output power or output spectrum requirements, without the need for welding or glassblowing expertise, the discharge tube (1) is mounted in a pair of sockets (4,5), one of which (4) is axially slidable. The socket is spring-loaded (8), and thus readily adapts to discharge tubes of differing lengths. The socket slides along guide rods (6, 7, 16) which also serve as electrical supply conductors to the sockets (4, 5). Spacer elements (11) help maintain alignment of the guide rods, sockets, and discharge tube with respect to the axis (12) of the outer bulb (10).

Abstract: A Pierce electron gun is provided having a cathode, a focusing electrode surrounding the cathode, and an anode disposed a fixed distance from the cathode and having an opening therethrough. The electron gun has at least one grading electrode disposed between the focusing electrode and the anode. The grading electrode controls shape of equipotential lines of an electric potential difference provided between the anode and the cathode, to purposely reduce field gradient levels formed by the electric potential difference. The grading electrode further has a double radial bend having an inner radial curve of a first radius and an outer radial curve of a second radius.

Abstract: A light emitter for giving plasma light emission upon application of an electric field. The light emitter comprises a resin including fine bubbles in which a gas is trapped. The gas is selected from rare gases, hydrocarbon gas and nitrogen gas. This light emitter is applicable to a light emitting device such as a plasma display.

Abstract: A cathode-ray tube has a faceplate panel joined to a funnel. An internal magnetic shield is disposed within the tube and is connected to a bottom surface of a flange of a shadow mask frame. The flange of the shadow mask frame has a plurality of integral shield-retaining clips formed therein. Each of the clips overlaps at least a portion of the shield, to retain it in contact with the flange of the frame.

Abstract: An improved cathode-ray tube includes a viewing screen and an electron gun for generating and directing three electron beams toward the screen. The gun includes at least eight electrodes spaced in order from three cathodes, with the furthest electrode from the cathodes being interconnected to a tube anode. The electrodes form a beam forming region, a first quadrupole lens, a main focus lens and a second quadrupole lens in the path of each electron beam. In the improvement, the second quadrupole lens is positioned on the anode side of main focus lens, with the first quadrupole lens being diverging for defocusing the beams, and the second quadrupole lens being converging for focusing the beams in the horizontal plane.

Abstract: A fluorescent lamp providing improved maintenance and brightness includes an alkaline earth halophosphate (Cool-White) phosphor, e.g. a calcium halophosphate phosphor, having a continuous protective bilayer coating of alumina surrounding silica surrounding the phosphor particles. The lamp may be a high color rendition fluorescent lamp in which a first layer of alkaline earth halophosphate phosphor coats an inner surface of the lamp envelope, and a second layer of phosphor overlies the first layer of phosphor. The second layer of phosphor is a mixture of red, blue and green emitting phosphors, at least one of these being a zinc silicate phosphor. Each of the alkaline earth halophosphate and zinc silicate phosphors have a bilayer coating in which a coating of alumina surrounds a coating of silica which surrounds the phosphor.