Abstract: An illuminating lamp for a display device is capable of minimizing a luminance difference between a high-voltage driving side and a low-voltage driving side. The illuminating lamp is arranged behind a display panel via optical sheets and driven in a high-voltage driving method. The illuminating lamp includes discharge lamps connected in series, wherein gas pressures of the discharge lamps at a high-voltage driving side are set to be higher than those of the discharge lamps at a low-voltage driving side.

Abstract: A plasma display device includes: a plasma display panel including an address electrode disposed on a first substrate, a pair of first and second display electrodes disposed on a second substrate and crossing the address electrode, a dielectric layer covering the first and second display electrodes on the second substrate, an MgO protective layer covering the dielectric layer on the second substrate, and discharge gases filled between the first and second substrates; a driver that drives the plasma display panel; and a controller that controls a sustain pulse width of a sustain period to be 1 to 3.5 ?s. The MgO protective layer includes 100 to 300 ppm of Ca, 100 to 250 ppm of Al, 10 to 50 ppm of Fe, and 70 to 170 ppm of Si based on MgO. The plasma display device shows improved discharge stability and display quality due to reduced discharge delay time (Ts).

Abstract: A gas-filled discharge gap includes at least two electrodes and an electrode-activation mass that is arranged on at least one of the electrodes. The electrode-activation mass contains K2WO4.

Abstract: The lamp, particularly the high pressure discharge lamp, comprises a socket (10) made of an insulating material, a burner (12) for emitting light mechanically connected to the socket, and a backlead wire (14) connected to the burner (12), wherein the socket (10) comprises a color with a weighted absorption of <50% and/or a ceramic dielectric (16) arranged around the backlead wire (14) is provided, wherein the ceramic dielectric (16) comprises a color with a weighted absorption of <50%. By using colors for the socket (10) and/or the ceramic dielectric (16) with a low absorption it is possible to increase the luminous flux of the lamp significantly without increasing the power of the lamp.

Abstract: A second transparent electrode of each of the row electrodes in each row electrode pair corresponding each of the discharge cells located in an internal peripheral portion of the panel has an electrode area smaller than the electrode area of a first transparent electrode corresponding each of the discharge cells located in a central portion of the panel. The head portion of the second transparent electrode corresponding to each of the discharge cells located in the internal peripheral portion has a row-direction width greater than the row-direction width of the head portion of the first transparent electrode corresponding to each of the discharge cells located in the central portion.

Abstract: A gas discharge tube which generates discharge between an anode 24 and a cathode 56 disposed within a sealed container 12 in which a gas is sealed, includes a cylindrical part 28 restricting the discharge path, the cylindrical part being disposed between the anode and the cathode and having a through hole 42 for narrowing the discharge path between the anode and the cathode, and a discharge shielding part 50 which is disposed so as to cover a surrounding of the part restricting the discharge path and is electrically insulated from the part restricting the discharge path, wherein the part restricting the discharge path has a cathode side end projecting by a predetermined projecting amount more than a surface on the cathode side of the discharge shielding part and an anode side end projecting into a space 62 on the side where the anode is positioned so that a high-density electron region is formed only in a part on the cathode side of the through hole of the part restricting the discharge path to reliably gener

Abstract: A plasma display panel is provided. The plasma display panel comprises a plurality of first electrodes and a plurality of second electrodes; wherein the first electrodes and the second electrodes cross at a discharge space; wherein prominent electrodes and formed at a portion o the first electrodes where the first electrodes cross with the second electrodes to extend the area of the address electrodes so that a stable address discharge may occur, and vertical centers of the prominent electrodes are asymmetrical with respect to vertical centers of the discharge spaces, which may be coated with red, green and blue fluorescent layers.

Abstract: An incandescent lamp that emits infrared light and a method of making the lamp includes a filament assembly inside a polycrystalline aluminum oxide (PCA) envelope, where the filament assembly preferably has a coiled tungsten filament, solid metal ends of tungsten or molybdenum attached to the coiled tungsten filament, and leads at distal ends of the solid metal ends. End caps are attached to ends of the envelope and have openings through which a respective one of the leads extends, where the leads are each made of an electrically conductive material having a coefficient of thermal expansion compatible with the end caps, such as niobium. The leads are attached to the end caps with glass-ceramic sealing frits. The end caps and sealing frits seal a suitable gas inside the envelope.

Abstract: A mercury-free gas discharge lamp suitable in particular for motor vehicles has an enhanced discharge arc diffuseness. The lamp according includes an inner vessel and/or outer bulb with a structured arrangement or pattern such that the discharge arc diffuseness of the lamp is increased, such as by 0.01 mm to 1.5 mm.

Abstract: The present invention relates to glow-switch starters 1, lighting devices therewith and use thereof. The glow-switch starter 1 is suitable for use with three phase supply voltages substantially higher than the common 230V supply voltage 26. This allows more efficient gas discharges in e.g. fluorescent lamps 20, and/or more lamp power, and/or less energy losses in ballasts 22 and lamp electrodes. To make the glow-switch starter suited for such use, according to the invention, the gas filling 5 of the starter 1 is adapted. An important criterion is that the glow current in the steady state operation of the fluorescent lamp that is started by the starter is small enough to prevent closing of the (bimetallic) switch.

Abstract: Disclosed are an electrodeless bulb (10), and an electrodeless lighting system having the same. The electrodeless bulb (10) includes; a light emitting unit (11, 13) having an airtight inside space (116, 13a); a main discharge material filled in the inside space (11a, 13a) of the light emitting unit (11, 13) and discharged by microwave, for emitting light; a discharge assistant material filled in the light emitting unit (11, 13), for forming plasma in the inside space (11a, 13a) before the main discharge material generates plasma; and a discharge catalyst material filled in the light emitting unit (11, 13), for inducing initial discharge of the main discharge material and the discharge assistant material. The lighting system improves lighting efficiency of the main discharge material filled in the light emitting unit (11, 13), and has an eco-friendly characteristic by excluding an environmental contaminant such as mercury.

Abstract: An electrodeless lamp assembly includes a tubular lamp envelope, at least one core having a closed-loop body disposed so as to surround a core mounting portion of the tubular lamp envelope. The core includes an indented coil winding section formed by an indentation formed in an inner side section of the closed-loop body adjacent to a centrally located opening. The electrodeless lamp assembly further includes an induction coil wound around the indented coil winding section of the core.

Abstract: An electrode-less plasma lamp, comprising generally of a bulb containing a gas-fill and light emitter(s) that is excited to produce light using radio-frequency (RF) energy. The present lamp includes compact air resonators/waveguides that use grounded coupling-elements with integrated bulb assemblies to reduce the size of the resonator and improve the performance of the lamp as well as reduce cost and simplify manufacturability.

Abstract: It is possible to prolong service life of a discharge lamp of hot-cathode type and to reduce a diameter thereof. A discharge lamp 1 is provided with an electrode 3. The electrode 3 has a heater 4 made up a coil portion 4a, and a first lead wire portion 4b and a second lead wire portion 4c that respectively extend from rear ends of this coil portion 4a and applied by an electron emission material 3a. In the electrode 3, a first lead-in wires 6a is connected to the first lead wire portion 4b and a second lead-in wires 6b is connected to the second lead wire portion 4c, so that the coil portion 4a is arranged vertically along the tube axis of the glass tube 2. The electrode 3 is also provided a sleeve 7 covering surrounding of the coil portion 4a and having openings in the faces respectively opposite to the forward end and rear end of the coil portion 4a. An open end 7a of the sleeve 7 exceeds a forward end of the coil portion 4a, thereby protecting the coil portion 4a.

Abstract: An arc tube assembly (10) for a protected high intensity discharge lamp. The assembly has a ceramic arc tube (12) with a short shroud (20) surrounding at least the arc chamber (14) of the arc tube. The short shroud (20) allows the frit seal areas (46) of the arc tube capillaries (18) to project beyond the shroud (20) and thereby operate at a lower temperature, thus increasing lamp life.

Abstract: A plasma display panel (PDP) that has improved discharge efficiency and luminance includes: a first substrate and a second substrate which are provided to oppose each other; barrier ribs which are provided between the first and second substrates and by which a plurality of discharge cells are partitioned; a phosphor layer formed in each of the discharge cells; address electrodes formed either on the first substrate or on the second substrate; and display electrodes formed on the first substrate to extend in a direction intersecting with the address electrodes. The display electrodes include: at least a pair of first display electrodes which are provided close to both peripheral portions of each discharge cell; and a second display electrode provided between the first display electrodes to cross the discharge cell, the second display electrode facing the first display electrodes on both sides to form at least two discharge gaps within each discharge cell.

Abstract: An arrangement of a low-pressure mercury amalgam lamp includes an amalgam deposit and a cladding tube surrounding a lamp, wherein the lamp has a mechanical contact to the cladding tube in a region of the amalgam deposit. A ring-shaped band contacting and surrounding the lamp in the region of the amalgam deposit represents the mechanical contact to the cladding tube.

Abstract: A flat fluorescent lamp is disclosed, wherein rows of U-shaped grooves are formed in a front glass substrate, rows of wavy parallel grooves are formed in a rear glass substrate, and the U-shaped grooves and the wavy parallel groves are made to be perpendicular to each other. Also, fluorescent substance coating films are interposed so as to be in contact with each other on the inner surfaces, and this realizes a structure resistant to an external air pressure. Furthermore, fluorescent discharge is produced inside a tunnel-shaped cavity between the rows of U-shaped grooves, and reduction in luminance at the lower side of the U-shaped grooves is compensated by illumination of the wall of the U-shaped grooves, where the reduction in brightness is due to non-illuminating sections being caused because the U-shaped grooves and the wavy parallel grooves are in contact with each other. Thus, a flat fluorescent lamp with uniform surface luminance is realized.

Abstract: A method includes enhancing an illumination of a lamp including coating an interior surface of a discharge vessel of the lamp with a coating material; and heating the discharge vessel. A lamp includes a discharge vessel having a coating material.

Abstract: A lamp, containing ?100 ppm Hg, includes a burner chamber having an axis, the axis having a section ?0.05 mm. The burner chamber has a recess oriented toward a light arc produced in the burning chamber to suppress arc curvature. The lamp has an arc-luminescence profile of luminescence (measured in cd/m2)/mm with an average slope over that section which is ?|300,000,000| (cd/m2)/mm. Preferably, the profile maximum value is ?90,000,000 cd/m2. In one embodiment, the arc-making device includes two electrodes disposed for producing the light arc across their two tips, the depth of the recess being sufficiently small so as not to extend between the two tips.

Abstract: A high-pressure discharge lamp which is suitable for motor vehicle headlights, has an improved color point stability close to the black body locus, a high color temperature, and a high luminous efficacy (lm/w). The high-pressure discharge lamp includes an inner vessel with a discharge chamber, with at least two electrodes extending into the discharge chamber, and an outer bulb surrounding the inner vessel. The discharge chamber contains an ionizable filling including at least one rare gas, 0-10 mg of mercury, and a metal halide mixture. The metal halide mixture includes 40-80% by weight of sodium halide, 25-55% by weight of scandium halide, 1-15% by weight of indium halide, and 0-34% by weight of thallium halide.

Abstract: A plasma display panel driver. The driver uses a high side switch of a scan IC to increase a voltage width of an initialization waveform which is applied in the initial operation of the plasma display panel set. Accordingly, the initial screen is stably driven, and a voltage width is increased without additional installation of elements or an increase of a withstanding voltage switches.

Abstract: A plasma display panel includes first and second substrates opposing one another. Address electrodes are formed on the second substrate. Barrier ribs are mounted between the first and second substrates defining discharge cells and non-discharge regions. Phosphor layers are formed within each of the discharge cells. Discharge sustain electrodes are formed on the first substrate. The non-discharge regions are formed in areas encompassed by discharge cell abscissas and ordinates passing through centers of the discharge cells. Further, the discharge cells are formed such that ends thereof increasingly decrease in width as a distance from centers of the discharge cells is increased. The discharge sustain electrodes include bus electrodes that extend perpendicular to the address electrodes and outside areas of the discharge cells but across areas of the non-discharge regions, and protrusion electrodes formed extending from each of the bus electrodes.

Abstract: An arc discharge lamp (10) has an envelope (12) including a base (14) containing lead-ins (16, 18). An arc tube (20) is positioned within the envelope (12) and has electrodes (22, 24) sealed therein. The electrodes have connection ends (26, 28) extending outside of the arc tube (20). A flexible primary electrical connector (30) is fixed between one of the lead-ins (16) and one of the connection ends (26) of one of the electrodes (22), the flexible primary electrical connector (30) having an area “A” subject to intergranular corrosion in the presence of oxygen and arc tube operating temperatures. A rigid secondary, intergrannular-corrosion-resistant electrical connector (32) is electrically connected between the lead-in (16) and the one of the connection ends (26) of the one of the electrodes (22), the rigid secondary electrical connector (32) by-passing the area “A” that is subject to intergranular corrosion.

Abstract: The invention relates to a lighting unit comprising at least a high-pressure gas discharge lamp, which comprises at least a lamp bulb (1) with a discharge space (21) in which two electrodes (41, 42) are arranged and in which a gas mixture with ingredients capable of condensation is present, wherein a risk of condensation deposit between and/or on the two electrodes (41, 42) exists, and which comprises an ignition device and a unit for local heating (5) of the lamp bulb (1), characterized in that the lighting unit comprises at least one unit for local cooling (6) of the lamp bulb (1).

Abstract: The auxiliary light source includes a vacuum chamber, a pair of electrodes, and fluorescent material. The vacuum chamber has an internal space which is evacuated. The pair of electrodes is situated inside the vacuum chamber so as to face each other. The fluorescent material is arranged inside the vacuum chamber and emits light including ultraviolet rays by receiving electrons emitted when voltage is applied between the electrodes. An arc tube of a high-pressure discharge lamp is situated within an irradiation range of the light, and the light is emitted at least from a time just before the high-pressure discharge lamp is turned on until the high-pressure lamp emits light.

Abstract: A mercury-free high-pressure discharge lamp includes a light-transmissive airtight envelope enclosing therein a discharge space, and a pair of electrodes sealed inside the light-transmissive airtight envelope and facing the discharge space, and the primary halide includes at least thulium bromide having an innumerable emission spectrum primarily around the peak of a luminosity curve and alkali metal halide, and the accessory halide contains one or more metal halides mostly selected from a group of Magnesium (Mg), Iron (Fe), Cobalt (Co), Chromium (Cr), Zinc (Zn), Nickel (Ni), Manganese (Mn), Aluminum (Al), Antimony (Sb), Bismuth (Bi), Beryllium (Be), Rhenium (Re), Gallium (Ga), Titanium (Ti), Zirconium (Zr), and Hafnium (Hf) which primarily contribute to fix lamp voltage.

Abstract: A flash unit for an image capturing device includes a noble gas-filled flash tube and two electrical terminals. The outer surface of the flash tube includes a light-transmissive portion and a light-reflective portion. The two electrical terminals protrude outwards from the two opposite ends of the flash tube respectively for allowing application of a high voltage pulse to the noble gas for creating a flash of light.

Abstract: A fluorescent lamp including a glass bulb that is in a shape of a tube. External electrodes are formed as conductive layers each of which covers an outer surface of the glass bulb at an end thereof. Metal members in a shape of a cap are respectively connected to the external electrodes by covering at least part of the external electrodes. The metal members are formed such that rims of the metal members recede from a center of the glass bulb in the tube axis direction a distance L than rims of the external electrodes.

Abstract: A high-pressure discharge lamp has an outer envelope (1) in which a discharge vessel (11) is arranged. The discharge vessel encloses a discharge space (13) with an ionizable filling. The discharge vessel has two mutually opposed neck-shaped portions (2,3) through which current supply conductors (4,5) extend to a pair of electrodes (6,7) in the discharge space. A lamp base (8) of electrically insulating material supports the discharge vessel. The lamp base also supports the outer envelope (1). The outer envelope encloses the current supply conductors and is connected to the lamp base in a gas-tight manner. By controlling the atmosphere in the outer envelope, a simplified and compact high-pressure discharge lamp is provided with an accurate positioning of the discharge vessel with respect to the optical axis of the lighting system. The high-pressure discharge lamp can be suitably applied in an assembly with a reflector.

Abstract: A plasma display panel has a screen (50) composed of a plurality of cells and a dielectric layer (17) across the entirety of the screen, and each cell includes a discharge space (31) filled with a discharge gas, a pair of electrodes (X, Y) for causing discharge in the discharge space (31), and a dielectric that is part of the dielectric layer (17) and that is interposed between the discharge space (31) and the electrodes (X, Y). The dielectric layer (17) has such a distribution of thickness that the dielectric layer is thinnest at the central portion of the screen and is gradually growing from the central portion of the screen toward the peripheral portions of the screen. The distribution of thickness in the dielectric layer makes the variation in the discharge delay between cells prominent, thereby relaxing the concentration of the discharge current.

Abstract: An electrodeless discharge lamp apparatus is provided which is increased in heat dissipation, making it possible to adapt to an increase in output of the apparatus. The electrodeless discharge lamp apparatus comprises a bulb containing a discharge gas and a coupler accommodated in a cavity formed in the bulb for generating a high frequency electromagnetic field. The coupler has: an induction coil; a core inserted into the coil; a heat conductor for conducting heat generated from the coil and the core; and a bobbin made of resin which accommodates the core and the heat conductor therein, and which has the coil wound therearound. The bobbin is designed to be separated in a radial direction of the coil, so that it is possible to separately mold the respective parts of the bobbin.

Abstract: A method of green joining ceramic components is disclosed, particularly for use in forming a discharge body for a ceramic metal halide lamp. The process includes providing a first green ceramic component having a male joining surface, and providing a second green ceramic component having a female joining surface dimensioned to matingly receive the first component. The first and second green ceramic components are assembled along the joining surfaces, the assembled components are uniformly heated to join the first and second components. The joined components are next cooled in a cooling bath that uniformly cools the joined components. Thereafter, the joined green part may be inserted in the furnace for debindering and sintering.

Abstract: The invention relates to aluminoborosilicate glasses as a glass casing body of a lighting means, especially for background illumination, which glass composition is equally suitable for use in lighting means with external contacting as well as for lighting means with internal contacting.

Abstract: A lamp elongated bulb (1) which defines a longitudinal axis (A), is closed on the opposite ends thereof by sealing parts (6; 32), to which an outer bulb is fixed via bulges. A neck adjacent to the outer bulb is produced by a specific method.

Abstract: The present invention is directed to the use of a molybdenum-rhenium alloy in the construction of sealing tubes for high pressure discharge lamps.

Abstract: A new gas discharge tube comprising at least two electrodes and at least one hollow insulator ring fastened to at least one of the electrodes, wherein the insulating ring has an extended length for a creeping current on at least one of the surfaces inside and/or outside compared to its height thereby providing a long distance to any possible creeping current.

Abstract: Provided herein is a light-emitting apparatus capable of achieving both improved durability and higher brightness with an inexpensive and simple construction. A heat resistant glass substrate 51 is mounted in a vacuum chamber 5, and while an anode electrode 8 (and a light emitter 20) is mounted on the glass substrate, the glass substrate 51 is separated from a glass substrate 11. This precisely protects the vacuum chamber 5 from thermal damage due to light emission upon excitation, even when the current density between the cathode electrode 6 and the anode electrode 8 is controlled at a high level to cause the light emitter 20 to emit light at high brightness.

Abstract: A spiral pulse generator is used to start the high-pressure discharge lamp, and is accommodated directly in the outer bulb of the lamp. The spiral pulse generator is surrounded by a ferritic material so that it acts as a starting transformer.

Abstract: The elongate bulb (1) of the lamp, which defines a longitudinal axis (A), is sealed at mutually opposing ends by sealing parts (6; 32), to which an outer bulb is fixed, the ratio between the total length of the outer bulb LAKO and the inner length of the inner volume LEG being between 1.3 and 4, preferably 1.5 and 3.

Abstract: A discharge lamp includes a glass tube having electrodes with an electron emissive material coated thereon, the electrodes being provided on respective ends of the glass tube, wherein the glass tube has a gas containing a luminescent material sealed therein and has a fluorescent material coated on its inner surface, the glass tube has a diameter less than 6.5 mm and the gas sealed into the glass tube is gases of more than one kind selected from an Ar (argon) gas , a Kr (krypton) gas and a Xe (xenon) gas or a mixed gas mainly made of gases of more than one kind selected from the Ar gas, the Kr gas and the Xe gas. Thus, the discharge lamp can reduce a diameter of its tube and it is able to provide high luminous efficiency.

Abstract: A ceramic gas tight high-pressure burner includes an ionizable filling. The burner further includes a discharge vessel having a discharge cavity with a volume in the range of 3 mm3 to 30 mm 3, and an internal filling pressure of the discharge cavity in the range from 0.1 MPa to 4 MPa at room temperature. An end closure of the burner may be designed as a three-part, a two-part or a one-part end closure device with a reduced crevice.

Abstract: An electrodeless discharge lamp comprising: an airtight container bulb made of a transparent material and enclosing a discharge gas; and a coupler (coil assembly body), contained in a cavity formed in the bulb, for generating a high frequency electromagnetic field by conducting a high frequency current in a coil to excite the discharge gas so as to emit light, wherein the coupler comprises: a pipe-shaped cylinder formed of a thermal conductor for heat release; a skeleton-shaped bobbin mounted on an outer surface of the cylinder along an axial direction of the cylinder; a core made of a soft magnetic material provided at an opening formed by the skeleton of the bobbin and being in substantial surface contact with the cylinder; and a coil wound around a surface of the skeleton-shaped bobbin and the core.

Abstract: A method for producing a discharge tube arrangement (1) for a lamp, and a discharge tube arrangement produced according to one such method. The arrangement has an outer piston (2) into which a discharge tube (6) is inserted, the outer piston being sealed to the discharge tube and defining a gas-tight intermediate region (12) therewith, for receiving a gas inflation (14). According to the invention, the intermediate region (12) is cleaned and/or filled with gas via the discharge tube (6).

Abstract: High-voltage switch, in particular for a microwave generator, which includes a spark gap which breaks down in order to switch when a high voltage is applied provided is a plurality of parallel-connected spark gaps (12, 12a, 12b), each having at least one electrode (13, 13a, 13b) with a series-connected fuse (14, 14a, 14b) which is irreversibly destroyed when the respective spark gap (12, 12a, 12b) breaks down.

Abstract: An integrated CFL lamp that is TCLP-compliant as to both mercury and lead is provided through the combination of (1) means to reduce the amount of leachable mercury in the spent lamp, preferably comprising a low mercury burner or other burners containing additives to reduce the amount of leachable mercury in the spent lamp; and (2) means to reduce the amount of leachable lead in the spent lamp, preferably comprising a circuit board that comprises a lead-free solder or such circuit board and at least one of a base portion and/or a lamp screw base portion that comprises a lead-free solder.

Abstract: The invention relates to a high-pressure discharge lamp having a discharge vessel (10) sealed at both ends, a filling which can be ionized and is enclosed in the discharge area (106) of the discharge vessel (10), and electrodes (11, 12) which extend into the discharge area (106), in order to produce a gas discharge, with the discharge vessel (10) having an electrically conductive coating (107) which is designed as a starting aid and is arranged at least in the boundary area (109) between the discharge area (106) and a first sealed end (102) of the discharge vessel (10).

Abstract: A high-pressure discharge lamp for a vehicle headlight having a discharge vessel and electrodes arranged therein for the purpose of generating a gas discharge, the discharge vessel having a central section which is delimited by two planes which are arranged perpendicularly to the connection path of the discharge-side ends of the electrodes and each extend through the discharge-side end of one of the electrodes, wherein the volume, which is arranged in said central section and is filled by the material of the discharge vessel, is greater than or equal to 95 mm3.

Abstract: A tungsten alloy feedthrough for ceramic discharge vessels is used to form a hermetic seal with the ceramic body of the discharge vessel. The tungsten alloy comprises tungsten alloyed with a metal selected from titanium, vanadium or a combination thereof. The alloy may be formulated to have a coefficient of thermal expansion that closely matches that of the ceramic to prevent cracking. Preferably, the tungsten alloy contains from about 10 to about 35 wt. % of a metal selected from Ti, V, or a combination thereof.

Abstract: The invention relates to a high-pressure gas discharge lamp which comprises at least a lamp bulb (1) hermetically enclosing a discharge space (21) filled with a gas, a functional layer (3), and a light emission opening (5), the latter two being arranged on the outer surface of the lamp bulb, wherein a second layer (4) covers further regions of the surface of the lamp bulb which do not serve the purpose of the functional layer, while the lamp can be operated at a power such that, given the power level of the lamp, a devitrification of the lamp bulb (1) and a condensation of the gas are substantially prevented.