Abstract: Various embodiments provide a bearing element for an electrode rod in a lamp stem. The bearing element includes an envelope configured in order to extend along a longitudinal axis of the electrode rod. The envelope has a polygonally shaped cross section at least in sections.

Abstract: An arc tube light source supported by a discontinuous two-part (top and bottom) frame inside a bulb of an HID lamp is ruggedized to reduce weld breakage under vibration and shock. Each of the top and bottom frames is substantially U-shaped, with the open end of the U-shape being attached by a strap to a pinch of the arc tube. For ruggedization a bracing strap is fixed to, and extends between, two sides of the frame and is welded to a lead wire extending from the pinch. Strength is enhanced if two lead wires extend from the pinch, and the bracing strap is welded to both. Advantageously the two lead wires are sides of a U-shaped wire such as a “U-pin”. Further stabilization may be achieved by using braces attached to both of the top and bottom frames and extended out against surrounding parts of the bulb.

Abstract: A method is provided for producing a wire or tape, especially for use as an electrode or electrode tip in spark plugs. The method includes the following steps: (a) producing an intermetallic compound having a melting point above 1700° C.; (b) grinding the intermetallic compound; (c) mixing the intermetallic compound with metal powder; (d) introducing the mixture obtained in step (c) in a tube produced from ductile material; and (e) shaping the tube filled in step (d) to give a wire or tape. Also provided are a wrapped wire or wrapped tape, especially a semifinished product for producing electrodes or electrode tips of spark plugs.

Abstract: An image display apparatus includes a display panel having a face plate, a rear plate, and a frame member, forming a vacuum container, a plurality of plate-like spacers arranged between the face plate and the rear plate in an interior of the vacuum container to maintain an internal space of the vacuum container, and a support member that supports a rear surface of the display panel. The support member includes a plate-like member having a plurality of protruding portions with a linear shape, and a longitudinal direction of the protruding portions and a longitudinal direction of the spacers are substantially parallel to each other.

Abstract: A short arc lamp comprises front and back subassemblies including mating weld rings, whereby the lamp can be assembled and sealed through welding of the weld rings. Each subassembly includes a number of self-aligning components to facilitate assembly and improve alignment accuracy. The metal body of the lamp can have a cooling projection portion, which can be received by a heat sink to remove heat from near the anode. A heat sink also can be formed as part of the metal body. The lamp reflector can be a drop-in reflector, or can be formed as part of the metal body through a process such as metal injection molding. A single strut can be used to position the cathode, which can be part of the sleeve or received by a portion of the sleeve. A trigger electrode can be used to simplify the power supply for the lamp.

Abstract: A display panel assembly includes a first substrate having an effective display region for displaying an image and a non-effective display region positioned at a peripheral region outside of the effective display region, a second substrate facing the first substrate, a sealing member disposed along a boundary between the effective display region and the non-effective display region between the first and second substrates, the sealing member including a thermosetting material, and an exothermnic member interposed between the sealing member and the first substrate to generate heat for curing the sealing member.

Abstract: To prevent an irregular shift of an electron beam emitted from an adjacent electron emitting device when preventing electrification of a spacer covered with a resistance film by using the spacer. A spacer 3 is set along a row-directional wiring 5 connected to a plurality of electron emitting devices 8 of a first substrate and a resistance film 14 formed on the surface of the spacer 3 is brought into contact with and electrically connected to a conductive member 11 such as a metal backing on a second substrate 2 and the row-directional wiring 5 on the first substrate while the shape of the contact face between the resistance film 14 and the row-directional wiring 5 or the resistance film 14 and the conductive member 11 has a concave shape or convex shape to be almost symmetric with respect to the center line of the spacer 3.

Abstract: A plasma display panel includes a first substrate, and a second substrate opposing the first substrate with a predetermined gap therebetween. Barrier ribs are mounted between the first substrate and the second substrate, and define a plurality of discharge cells. At least one row of every three rows of the discharge cells is formed in an open configuration to thereby realize open discharge cells, and the other rows of the discharge cells excluding the at least one row include discharge cells formed in a closed configuration to thereby realize closed discharge cells.

Abstract: An improved support is provided for locating a lamp filament axially within a lamp sleeve. The illustrated support is a spiral coil that includes a small diameter center portion that makes contact with the filament. On either side of the filament-contacting portion, the coil opens up to larger diameters for contacting the inner wall of the quartz sleeve within which the filament is housed. The support thus appears H-shaped when viewed from the side. A lamp filament is also provided with expansion compensation sections at either end of a central section. The filament wire in the compensation sections is wound into coils having a greater diameter and also a greater spacing between windings, as compared to coil in the central section. The expansion compensation sections are preferably capable of compressing and thereby absorbing thermal expansion of the filament during operation, without shorting the filament across adjacent windings.

Abstract: A parabolic reflector lamp is provided wherein lamp efficiency is improved by more substantially approximating the shape of a complete parabola at the inner reflective surface. In a first embodiment, the heat shield is placed at the mouth of the opening at the base of the lamp, thereby “filling in” the opening and substantially completing the parabolic shape of the reflector. In a second embodiment, the opening at the base of the lamp is narrowed to minimize its cross-sectional area and maximizing reflective surface area. In a third embodiment, the glass shell of the lamp is provided in a two-piece configuration, allowing the size of the hole through the base of the glass shell to be reduced. The openings required to accommodate electrodes (and an exhaust tube in sealed lamps) are located in a second cup-shaped piece attached via a flange to the main body of the glass shell.

Abstract: There is provided a vacuum envelope having at least a first substrate, a second substrate opposed to the first substrate with a predetermined distance thereto, and plural spacers positioned between the first and second substrates A ratio &eegr; is defined by S/A, in which A is the internal cross-sectional area of the vacuum envelope in a cross-section parallel to a plane of one substrate opposed to the other substrate and S is the total cross sectional area of the plural spacers on such cross section, and satisfies a relation 0.78%≦&eegr;≦7.8%.

Abstract: An improved cermet for hermetically sealing a discharge vessel in a ceramic discharge lamp where the cermet includes a material having a coefficient of linear expansion which is at least equal to a coefficient of linear expansion of a translucent ceramic, and a material having a coefficient of linear expansion which is smaller than the coefficient of linear expansion of the translucent ceramic, where the cermet has an average coefficient of linear expansion in a range of E±1.0×10−6 (K−1) at a temperature range of 25 to 300° C., where E (K−1) is an average coefficient of linear expansion of said translucent ceramic at a temperature range of 25 to 300° C. In addition, a ceramic discharge lamp utilizing such a cermet.

Abstract: A cathode structure comprises a cathode, a cathode sleeve, a cathode holder and a cathode strap. The cathode sleeve contains a heater. A hold structure includes a cylindrical cathode support cylinder for holding the cathode structure, and a cathode support strap having an elongated plate shape and having a cylindrically curved portion engaging the cathode support cylinder. An opening portion is formed in the cylindrically curved portion of the cathode support strap. The cathode support cylinder of the hold structure and the cathode holder of the cathode structure are welded through the opening portion, and the cathode structure is held by the hold structure.

Abstract: Disclosed is a cathode supporter for an electric gun in a CRT(Cathode Ray Tube), which can reduce an amount of expensive ceramics glass used, which is filled within the cathode supporter, by removing guide pipes from the cathode supporter, which is conventionally provide with the guide pipes through which guide pins of a beading jig are inserted, to decrease a horizontal length a of the cathode supporter. According to a preferred embodiment of the present invention, the electric gun includes three cathodes for radiating electron beams, a plurality of electrodes for controlling, accelerating and focusing the electron beams, and guide holes formed at both sides of some electrodes among the plurality of electrodes for allowing guide means to be inserted therethrough, wherein the horizontal length of the cathode supporter for supporting the cathodes are smaller than an inside horizontal length of the guide means to prevent any interference from being generated between the cathode supporter and the guide pins.

Abstract: A plurality of fixing stands (32) are attached to the inner face of a rear case (10), and a back electrode substrate (33) that functions as a back electrode and an electrode unit (11) formed by superposing a plurality of electrode plates via insulators are attached to the fixing stands (32). In this case, only one fixing stand positioned substantially at the center of the back electrode substrate (33) in the plurality of fixing stands (32) is fixed to the back electrode substrate (33), and presser bar plate springs (36) for pressing the substrate are attached onto the remaining fixing stands to fix the back electrode substrate (33) by their elasticity. Such an attachment structure enables thermal distortion in fabrication processes and during operation and influences of vibration/impacts from the exterior to be absorbed or eliminated, thus providing a flat-type image display apparatus with high accuracy and high image quality.

Abstract: In order to operate Field Emission Displays (“FEDs”) contain an evacuated space. Generally, two soda-lime glass substrates, separated by a vacuum gap, act as cathode and anode. The vacuum gap is essential for the electrons to be emitted from the sharp cathode tips and travel towards the anode to give up their energy to the phosphor anode plate to emit light. The two plates and the frit seal holding the vacuum gap are under strain due to the atmospheric pressure acting on them. For small size FEDs , this strain is not a problem. However, for large area FEDs, the strain is detrimental both to the glass plates (2 mm thick) and frit seal. Under the strain, both the cathode and anode plates will buckle-in towards vacuum and, in turn, stress the frit seal, causing cracks and vacuum failure. To minimize this effect and enable the FED to operate normally, a field emissive display with a support plate for the cathode plate is disclosed.

Abstract: A lamp is provided with a mounting arrangement for achieving a precise alignment. The lamp includes a double-ended light source, a metal strap clamping one end of the light source at two locations, and a plastic base having an internal opening wherein the metal strap is engaged. The metal strap includes two clamping members between which the light source is clamped and a cap member attached to the clamping members. The cap member has tabs adapted for engaging the internal opening of the plastic base and gimbaling the light source to align the light source with respect to the plastic base. The clamping members are joined together at a point between the to clamping locations such that a spring force clamps the light source. The clamping members are also oriented at an angle of about 45 degrees from vertical to better withstand both vertical and horizontal loads.

Abstract: A discharge lamp having an emission part with a roughly spherical external shape and tube arms extending from opposite sides of the emission part, hermetically sealing parts formed on an end of each robe arm, and a lead pin extending parallel to a longitudinal axis of the tube arm, a tip of each lead carrying an electrode in the emission part, so that a pair of electrodes are arranged opposite one another in the emission part. Within each babe arm, in the vicinity of the emission part, a plate-shaped holding part which is made of a metal with a high melting point and through which the lead pin penetrates, is arranged roughly perpendicularly to the lead pin and serves for positioning of the electrodes.

Abstract: The high-pressure discharge lamp has a discharge vessel (1) with seals (2) on each of which a metal clamping plate (20) is present. The discharge vessel is accommodated in an outer bulb (10) which has cylindrical portions (12). The clamping plates (20) have transversely flanged rims (24, 25) from which elastic tongues (23) extend towards the outer bulb in tangential direction and press against a cylindrical portion (12) of the outer bulb with clamping force. The clamping plates (20) render it possible to suspend the discharge vessel (1) in the outer bulb (10), keeping the discharge vessel centered and forming a buffer in the case of shocks.

Abstract: An image display apparatus comprises an envelope internally provided with at least an electron emitting source, a fluorescent material member that emits light upon irradiation with an electron beam emitted from the electron emitting source and a getter that maintains the vacuum inside the envelope, and a vacuum exhaust tube that forms a vacuum inside the envelope, wherein the inside of the envelope is partitioned with a substrate into a first space having at least the electron emitting source and the fluorescent material member and a second space containing at least the getter, and the substrate has a path that communicates both the spaces.

Abstract: To facilitate manufacture of a high-pressure discharge lamp in which a double-ended discharge vessel is located within an outer, essentially rotation-symmetrical bulb (1), the holder structure for the discharge vessel is formed of first and second punched sheet-metal elements (12a, 12b; 20, 21) which define surface planes, and are electrically separate from each other. A first punched sheet-metal (12a, 20) is electrically connected to a first current supply lead (7a) from the discharge vessel and a first current connector (11a) extending from the base. A second punched sheet-metal element (12b, 21) is electrically connected to the second current supply lead (7b) and the second current connector (11b, 11b') extending from the base. Both punched sheet-metal elements are located essentially in a central plane, and extend essentially perpendicularly with respect to the lamp axis (I--I).

Abstract: A high pressure discharge lamp includes a pair of arc tubes connected electrically in parallel within an outer envelope, which includes a lamp stem having a pair of stem conductors entering the lamp envelope in a common plane. The arc tubes include conductive feed-throughs at each end thereof. A lamp frame supports the arc tubes in a plane parallel with the stem conductors and is welded directly to each of the feed-throughs with all welds in a common plane with the welds between the frame and the stem conductors. The frame includes a resiliently deformable transverse member which allows for independent changes in length of the arc tubes during lamp operation due to thermal expansion/contraction. The frame is free of slip fit connections with the feed-throughs and free of additional conductive straps connected to the feed-throughs.

Abstract: To insure orientation of internal current leads (9, 10; 23, 24) extending om a press seal (14, 27) at the end of a bulb (3, 28) inwardly thereof, small metal elements (19, 20; 31, 32), preferably of the same material as the inwardly extending current leads, are connected, for example by welding, to the inwardly extending current leads, the small metal elements being oriented to extend transversely to the major direction of the current leads and positioned in a plane determined by the plane of the press seal.

Abstract: The invention provides a linear beam tube which may be protected against high voltage arcs between the cathode and anode of its electron gun by connecting to ground a limiting impedance in a series path from said anode. The anode is carried upon the end of a ceramic cylinder which is co-axially within a conical metallic member. The end of the ceramic cylinder remote from the anode is attached to one end of said conical metallic member, the other end of which is flanged, with the flange passing through the tube envelope to provide an external termination which may be connected to ground. Resistive material is deposited in a groove in the inner surface of said ceramic cylinder to form a deposited impedance which extends from the anode over the end of the ceramic cylinder, to the end of the conical metallic member and constitutes said limiting impedance.

Abstract: A halogen incandescent lamp performing halogen cycle in operation, comprising a bulb formed of light-transmitting material in which gas containing halogen atoms and inert gas are enclosed, a tungsten filament with working temperature of 2,800.degree. K. or more contained in the bulb, at least a pair of lead-in wires connected to or integrally formed on both ends of the tungsten filament, respectively, and having a part sealed in the bulb, the lamp characterized in that the light-transmitting material is aluminosilicate glass having a strain point of 660.degree. C. or higher and an average thermal expansion coefficient of 41.times.10.sup.-7 to 48.times.10.sup.-7 cm/cm/.degree.C. at a temperature of 100.degree. to 300.degree. C., and that at least filament-side seal portions of the lead-in wires have a diameter of 0.2 to 0.6 mm.