Abstract: The cold cathode lamp includes a light-transmissive insulating tube; the first and second internal electrodes disposed inside the insulating tube; the first and second external electrodes disposed outside the insulating tube and connected to the first and second internal electrodes, respectively; the first and second insulating members covering the first and second external electrodes, respectively; the first opposite electrode opposite the first external electrode with the first insulating member interposed therebetween, the second opposite electrode opposite the second external electrode with the second insulating member interposed therebetween, the first insulating layer covering the outer edges of the first opposite electrode; and the second insulating layer covering the outer edges of the second opposite electrode. It is possible to light up a plurality of cold cathode lamps that are connected in parallel to a power supply.

Abstract: A lamp includes a light emitter enclosing a material emitting light upon receiving irradiation of microwave, and a coil formed on an outer side of the light emitter. In the lamp, a position of the coil with respect to the light emitter is changed in response to a temperature.

Abstract: An external electrode fluorescent lamp for a backlight, including: a lamp that emits light; a first external electrode at one end of the lamp, and a second external electrode at a second end of the lamp; a dividing electrode between the first and second external electrodes and defining a plurality of divided regions; and a separating wall inside the lamp corresponding to the dividing electrode and separating the lamp into the divided regions.

Abstract: A high-pressure discharge lamp comprising an inner bulb (2) with a discharge space (3) containing an ionizable filling is described. Two electrodes (4,5) project from opposite sides into the discharge space (3). An outer bulb (13) surrounds the inner bulb (2) and a current-supply conductor (12) extends outside the outer bulb (13) for supplying an electric current to one of the two electrodes (5). A starter antenna (14) is connected to they current-supplyconductor (12). The starter antenna (14) passes through an opening (15) in the wall of the outer bulb (13) and extends towards the outer surface of the inner bulb (2).

Abstract: A high-frequency discharge lamp includes a coaxial waveguide including an internal conductor and a pipe-shaped external conductor surrounding said internal conductor, and a discharge tube including a ceramic or glass tube having an approximately ellipse spherical bulged part formed in a middle of a longitudinal direction, and both ends pinched and sealed; a conductor assembly sealed and attached to an end of the ceramic or glass tube; and an auxiliary electrode for starting disposed near the approximately ellipse spherical bulged part. A rare gas for starting with 1 atmospheric pressure or more at room temperature together with a light emission substance is enclosed inside of the approximately ellipse spherical bulged part. The discharge tube is inserted conductor assembly end first and held in a top opening of the coaxial waveguide. A high-voltage pulse generated by a high-voltage pulse generator is applied to the auxiliary electrode through a pulse transmission line.

Abstract: A lamp and a back light unit for improved brightness and efficiency are disclosed. In the lamp, a transparent tube is sealed with a discharge gas. A fluorescent material is formed within the transparent tube in an emitter section that generates light. Electrodes are installed at both sides of the glass tube.

Abstract: A multi-electrode double tube fluorescent lamp includes first external electrodes formed at two ends of an outer glass tube or an inner glass tube, and a second external electrode formed at an inner wall surface of the inner glass tube in a longitudinal direction. A first power source is connected with the first external electrode, and a second power source is connected with the second external electrode. A third external electrode formed along an outer surface of the outer glass tube is connected with the second power source. The second external electrode and the third external electrode are arranged in a radial shape in a direction vertical with respect to the longitudinal direction.

Abstract: The present invention relates to a new discharge element having a discharge-control electrode for inducing a discharge even at low voltage by improving a characteristic in which a discharge element may not be discharged against a fast transient voltage when it is at low voltage, and more specifically, the discharge element having a discharge-control electrode according to the present invention comprises an airtight cylinder formed with a ceramic insulation material, a pair of discharge electrodes arranged for facing an end opening of the airtight cylinder, a discharge gap formed between the pair of discharge electrodes, a discharge-assisting material filled inside the airtight cylinder, and a discharge-control electrode in contact with the airtight cylinder and physically separated from the discharge-assisting material, wherein a discharge between the pair of discharge electrodes is induced by a control voltage applied through the discharge-control electrode.

Abstract: A discharge lamp having a starting assembly is provided for use with existing high frequency electronic ballasts. The lamp comprises a light-transmissive envelope and has a discharge sustaining fill of an inert gas mixture of krypton and argon. The starting assembly comprises at least one conductive path attached to the outside or inside surface of the envelope or embedded in the envelope.

Abstract: An arc discharge light source (10) comprises a translucent body (12) having a hollow center 14 and oppositely disposed ends (16, 18). A cathode lead-in 20 is positioned in one of the ends (16) and terminates at a first end (22) in a cathode electrode (24) within the hollow center (14) and a second end (26) in a connector (28) for a power supply. An anode lead-in 30 is positioned in the other of the ends (18) and terminates at a first end (32) in an anode electrode (34) within the hollow center (14) and at a second end (36) in a connector (40) for a power supply. A space (42) between the cathode electrode (24) and the anode electrode (34) within the hollow center (14) defines an arc gap. An arc generating and sustaining medium (43) is provided within the hollow center (14) and a starting aid (41) comprising an auxiliary electrode (44) substantially surrounds the anode electrode (34) and is positioned solely on the external surface (46) of the body (12) and is electrically connected to the cathode lead-in (20).

Abstract: Disclosed is a discharge lamp, in particular a high pressure discharge lamp, with at least one discharge vessel and at least one ignition assisting element, preferably an ignition assisting wire or an electrically conducting coating of the discharge vessel, which element can be electrically connected to a power feed to the discharge lamp and which extends at least in some sections along the discharge vessel, wherein a device is provided for interrupting the electrical connection between at least one partial section of the ignition assisting element and the power feed in the operating state of the discharge lamp. Additionally disclosed are an ignition assisting device and a method for operating a discharge lamp of this kind.

Abstract: An external-electrode discharge lamp has a light-permeable, electrically insulative outer casing having a closed hollow space defined therein. A discharge medium is sealed in the outer casing. An external electrode is disposed on an outer surface of the outer casing for causing a dielectric barrier discharge in the discharge medium. The external electrode comprises a plate of an electrically conductive material and is brazed to the outer surface of the outer casing by a brazing material disposed fully circumferentially on the outer surface of the outer casing.

Abstract: Flash discharge lamp having an arc tube in which there is a pair of opposed electrodes, a rod-shaped trigger electrode which runs along the outside surface of the arc tube in its lengthwise direction; and a sealed tubular body which jackets the trigger electrode and has a hermetically sealed arrangement containing a metal foil. The trigger electrode has a recessed part on its surface in the vicinity of the metal foil and the recessed part is at least partially filled with the material of which the sealed tubular body is formed.

Abstract: The compact fluorescent lamp comprises a bulb shaped outer envelope enclosing a discharge tube having a coiled configuration and a ballast unit for controlling the current in the tube. The lamp further comprises at least one joint mechanical support and starting aid means for positioning the discharge tube and the ballast unit and reducing a breakdown voltage path of the discharge tube. The at least one mechanical support and starting aid means is made of an electrically conducting material and connected electrically to at least one of the electrodes. The neck portion has a retaining member, and the mechanical support and starting aid means is supported by the retaining member and clamped on the discharge tube at least at a location in a vicinity of a middle section of the arc path. The mechanical support means further comprises at least one support section to provide support against an apex of the outer envelope, and at least one fixing section for fixing of the discharge tube.

Abstract: Disclosed are a lamp, a method of fabricating the same and an LCD having the same. Electrode is disposed on an outer surface of a lamp tube, and an adhesive member is interposed between the electrode and the lamp tube. The adhesive member is hardened and expanded by means of heating, and adheres the electrode to the lamp tube. Thus, voids generated during forming the electrode on the outer surface is removed, and images having a high quality are obtained.

Abstract: An exemplary embodiment of a plate-type fluorescent lamp and a display device having the same includes an upper glass substrate; a lower glass substrate adhering opposite to the upper glass substrate; electrodes formed on external surfaces of the upper glass substrate and the lower glass substrate; and a dielectric layer formed between one of the upper and lower glass substrates and the electrodes. The dielectric layer is formed between at least one of the glass substrates and the electrodes so as to reduce generating a pinhole.

Abstract: An external electrode fluorescent lamp and its fabrication method are disclosed. The method for fabricating the external electrode fluorescent lamp includes providing a cylindrical glass tube having a phosphor layer coated at its inner circumferential surface, a discharge gas injected therein and sealed at its ends, forming external electrodes at both end portions of the glass tube, and forming insulation films for sealing the external electrodes each insulation film having an opening exposing a portion of the corresponding external electrode.

Abstract: The lighting device contains a quartz tube and a UV production member. In addition to a main chamber for high intensity discharge, the quartz tube has an auxiliary chamber formed around the conductor in a first end section. The UV production member contains a probe and a coil surrounding the first end section. An end of the coil is connected to a conducting wire from the other end section of the quartz tube. The other end of the coil is connected to the probe whose tip penetrates through the first end section of the quartz tube into the auxiliary chamber and points to the main chamber. When a voltage is applied, electrons are shot from the tip of the probe into the gas in the auxiliary chamber, and UV light is thereby produced and directed into the main chamber for the enhanced activation of the lighting device.

Abstract: A reflector assembly for use in a digital projector includes a reflector having a reflector opening defined therein, and a startup element fixedly coupled to the reflector such that the reflector and the startup element are configured to allow the replaceable coupling of a lamp assembly to the reflector assembly.

Abstract: An image display apparatus has a hermetic container having therein first and second substrates arranged opposite each other. An image display unit is disposed within the hermetic container and a conductive bonding member that seals the first substrate and the second substrate is disposed between the first and second substrates. The electric potential of the conductive bonding member is specified.

Abstract: A clamp structure of an external electrode lamp includes a first fixing device, a second fixing device, and a metal strip. The first fixing device has a first indentation and the second fixing device has a second indentation for clamping an electrode of the external electrode lamp. In addition, the metal strip is located between the first and second fixing devices to contact the electrode of the external electrode lamp for providing power. The electrode can be further equipped with a cushion for fixing the electrode onto the first and second fixing devices.

Abstract: A lamp—suitable for use within a projector or other high-light output application—includes an ultra high pressure bulb. An extension from the bulb defines a start-up bubble. A conductor is carried by the extension of the ultra high pressure bulb, generally enclosing the start-up bubble, thereby exciting gas contained within the start-up bubble. A header defines a socket within which the extension and the conductor are carried.

Abstract: A discharge light having a light emitting tube (1) encapsulates a discharging medium, an inner electrode (2) disposed in the light emitting tube, and an outer electrode unit (4) fixed to the outside of the light emitting tube. The outer electrode unit has at least a plurality of outer electrodes (4b) arranged intermittently in the axial direction of the tube and having a part abutting on the outer wall face of the light emitting tube, and a part (4c) engaging with the light emitting tube while coupling the outer electrodes thereof integrally, wherein the engaging part clamps the light emitting tube at a part thereof thus holding the outer electrode unit around the light emitting tube. The light emitting tube is lighted by applying a voltage between the inner electrode and the outer electrode. The outer electrode can be fixed readily to the light emitting tube and the plurality of outer electrodes can be held against the light emitting tube with high accuracy.

Abstract: A flat fluorescent lamp includes a lamp body and first external electrodes. The lamp body has discharge spaces formed therein. The first external electrodes are disposed at a first end portion of an outer surface of the lamp body and a second end portion that is opposite to the first end portion to define a first region where the discharge spaces overlap the first external electrodes and a second region where the discharge spaces do not overlap the first external electrodes. Each of the discharge spaces has a first width at the first region and a second width that is smaller than the first width at the second region. Therefore, an overlapping region between the first external electrodes and the discharge space increases to lower the discharge voltage.

Abstract: A dielectric barrier discharge type low pressure discharge lamp 11 includes dielectric barrier discharge type external electrodes 21, 22 on external ends of a tubular glass lamp vessel 10, electrically conductive material layers 31, 32 on the external surface of the tubular glass lamp vessel, and heat equalizing members 41, 42, which are provided on the electrically conductive material layer. With the constitution, the surface temperature of the external electrodes 21, 22 can be equalized with a local temperature rise avoided, thereby a longer life of the lamp can be assured.

Abstract: A multi-electrode double tube fluorescent lamp includes first external electrodes formed at two ends of an outer glass tube or an inner glass tube, and a second external electrode formed at an inner wall surface of the inner glass tube in a longitudinal direction. A first power source is connected with the first external electrode, and a second power source is connected with the second external electrode. A third external electrode formed along an outer surface of the outer glass tube is connected with the second power source. The second external electrode and the third external electrode are arranged in a radial shape in a direction vertical with respect to the longitudinal direction.

Abstract: A lamp with a reflector comprises a high pressure discharge lamp and a reflector. The reflector has a first opening and a second opening. Clearance between a sealing portion of the high pressure discharge lamp and the second opening is substantially filled. The sealing portion includes a first glass portion extending from a luminous bulb and a second glass portion provided in the inside of the first glass portion, and the sealing portion has a portion to which a compressive stress is applied. Moreover, when the sealing portion is disposed to extend in a substantially horizontal direction, a portion of the reflector is formed with an air inlet for introducing an air flow striking against an upper portion of the luminous bulb 1 and then coming into a lower portion of the luminous bulb 1.

Abstract: A flat fluorescent lamp has a uniform screen brightness even with a low discharge initiating voltage. A backlight unit using the flat fluorescent lamp is provided. The flat fluorescent lamp includes a front substrate, a back substrate having a continuous serpentine type discharge channel defined by a plurality of partitions extending alternately from both side ends of the back substrate. An inverter and a pair of electrodes provided on one of the front and the back substrates apply power to the electrodes. Each of the electrodes includes discharge electrodes mounted in strip configurations and a plurality of subsidiary electrodes that are mounted to extend perpendicularly from the discharge electrodes and to correspond to positions of the partitions. The plurality of subsidiary electrodes are alternately connected to inner edges of both the discharge electrodes so that neighboring subsidiary electrodes have different polarities.

Abstract: In an external electrode type discharge lamp, a gadolinium oxide film obtained by baking solution containing at least one of gadolinium octate and gadolinium propionate is provided in a portion including at least a portion corresponding to an external electrode.

Abstract: A ceramic arc tube having an integral susceptor for RF inductive sealing is described. The integral susceptor in the form of an electrically conductive coating is applied directly to the surface of the arc tube in the seal region. This enables RF heating which is sufficient to melt a frit material and hermetically seal the arc tube. The integral susceptor further provides for a more controlled placement of the seal.

Abstract: A flat lamp structure is disclosed. The flat lamp structure includes a gas discharge chamber, a fluorescence substance, a discharge gas, and a plurality of electrodes. The fluorescence substance is disposed on the inner wall of the gas discharge chamber, and the discharge gas is disposed in the gas discharge chamber. The electrodes are disposed on the outer wall of the gas discharge chamber, wherein the gas discharge chamber comprises a dielectric substrate, a plate, and a plurality of rods, and the plate is disposed on the upper portion of the dielectric substrate and the rods are disposed between the plate and the dielectric substrate, and the plate and the edge of dielectric are connected. Additionally, the gas discharge chamber, for example, can dispose with at least a spacer to enhance the strength of the gas discharge chamber.

Abstract: Disclosed is a flat fluorescent lamp, including a back substrate, a front substrate made of a transparent material and mounted on the back substrate through a sealing member disposed therebetween, a plurality of partitions disposed between the back and front substrates to define a discharge channel therebetween, a fluorescent material layer coated along a surface of the discharge channel defined by the partitions, a plurality of electrodes disposed to both the back substrate and the front substrate to cause a dielectric barrier discharge, and a reflective layer to cover the entire back substrate and upper portions of the electrodes disposed to the back substrate.

Abstract: An arrangement for emitting light includes a hermetically sealed casing with a window, a layer of a fluorescent substance arranged within the casing covering at least a major part of the window, an electron emitting cathode arranged within the casing, and an anode. The casing is filled with a gas suitable for electron avalanche amplification. In operation, the cathode and anode are held at an electric potential such that said emitted electrons are accelerated and avalanche amplified in the gas. The layer of the fluorescent substance is arranged to emit light through the window in response to avalanche amplified electron bombardment and/or ultraviolet light emitted from the gas.

Abstract: A starting aid in combination with a fluorescent lamp is provided. The lamp comprises a glass discharge tube (2) which includes a discharge path and is convoluted to have a plurality of discharge tube legs. These legs extend into and are secured in place in a plastic housing. Lamp electrodes (40, 42) are located at respective end points of a discharge path and disposed in some of the discharge tube legs. The lamp electrodes are connected to means suitable for electrically connecting to a socket. The starting aid comprises an electrical connector disposed in the plastic housing of the florescent lamp. The starting aid has a first end and a second end. The first end is connected to the means suitable for electrically connecting to the socket. The second end is secured to an end portion of an electrodeless discharge tube leg. At least a part of the electrical connector is formed as a spring. A fluorescent lamp system with a starting aid is also provided.

Abstract: A low-pressure discharge lamp is described having a base housing (10), a discharge vessel (2), whose end sections are fixed to an end section of the base housing, and a contact-making system for making electrical contact with the lamp, which is located on the end section of the base housing (10) which is remote from the discharge vessel, a conductive section (5) being provided, which is electrically connected to the contact-making system and is arranged adjacent to the discharge vessel (2) in the base housing (10) in such a way that an electrical short circuit is formed around the discharge vessel (2). This makes it possible to reduce the starting voltage of the lamp. As an alternative, or in addition, to this, the cross section of the web attachments is increased, which also increases the rate of the luminous-flux run-up.

Abstract: The invention relates to improvements in high-pressure discharge lamps of the ceramic metal halide type of the Philips MasterColor series having a metal coil wrapped around the discharge vessel and/or at least a portion of the electrode feed through means, and having power ranges of about 150W to about 1000W, wherein the lamp has a metal coil wound around the discharge vessel and/or at least a portion of the electrode feed through means in a first position and in which metal coil the coil position of at least one coil portion, preferably multiple coil portions, and most preferably substantially all of the coil portions of the metal coil are stabilized to be substantially non-relaxed from the first position after exposure to elevated temperature conditions present during operation of the lamp. The metal coil functions as both an ignition aid and for containment in said lamp.

Abstract: The invention relates to a discharge lamp having a base plate and a cover which is arranged in an essentially parallel manner thereto and which is corrugated in order to enable light to exit in a homogeneous manner.

Abstract: A flash lamp device having a flash lamp that includes an arc tube in which a pair of electrodes are disposed in opposition and a high voltage supply proximal conductor which extends parallel to the electrodes, on the exterior of the arc tube of the flash lamp. The high voltage supply proximal conductor is supported in an interior space of a sealed tubular body having a dielectric member with a greater permittivity than that of air.

Abstract: A light source device includes at least one discharge tube, a discharge medium sealed inside the discharge tube, and first and second electrodes for exciting the discharge medium. The first electrode is arranged inside the discharge tube. The second electrode is in contact with an outer surface of the discharge tube at a plurality of linear contact portions. The plurality of linear contact portions are substantially parallel with each other. Thus, a light source device is provided in which the occurrence of constricted discharge can be suppressed readily.

Abstract: A lamp assembly for a liquid crystal display device includes a lamp tube for generating light, and electrodes each having a suitable shape for receiving end portions of the lamp tube. The lamp tube and the electrodes are combined to generate the light by applying electric power to the electrodes. The lamp assembly may include multiple lamp tubes having different brightness from each other, in which the brightness difference between the lamp tubes is compensated by uniformly diffusing the light generated from the lamp tubes.

Abstract: The discharge lamp of the invention includes a main discharge vessel which is filled with a discharge medium for the main discharge via a pair of opposed main discharge electrodes, and has a first electrode sealing part and a second electrode sealing part for connecting the pair of main discharge electrodes. The advantage of the invention is in a starting electrode arranged such that it does not come into contact with the main discharge space, and an auxiliary light source which includes an auxiliary discharge vessel located adjacent on the side of one of the electrode sealing parts and which is not made integral with the electrode sealing parts. The auxiliary light source is filled with a discharge medium, and has a first outer electrode on the outside of the auxiliary discharge vessel.

Abstract: A light source device in which the operating characteristic of the auxiliary light source can be improved, in which the starting property within the main discharge vessel is extremely advantageous and which has high reliability with respect to vibration resistance and impact strength without the disadvantage of a cost increase due to the complicated arrangement of the light source device, without reducing the proportion of good articles in the manufacture of the products, and without reducing the quality of the discharge lamp is achieved using a main discharge lamp mounted in a reflector with an auxiliary light source tightly held by the reflector or components which are adjacent to the reflector and without contact with the main discharge vessel.

Abstract: A light source device includes a discharge tube, a discharge medium sealed inside the discharge tube, and inner and outer electrodes for exciting the discharge medium. The inner electrode is arranged inside the discharge tube. The outer electrode includes a first outer electrode and a second outer electrode that are connected electrically with each other. The first outer electrode is in contact with an outer surface of the discharge tube at a plurality of first contact portions that are located at different distances from the inner electrode and are provided discontinuously. The second outer electrode is in contact with the outer surface of the discharge tube at second contact portions. The second contact portions are arranged closer to the inner electrode than the first contact portions at a surface density greater than that of the first contact portions.

Abstract: The gas discharge lamp has a burner, which has a discharge vessel with a void, in which a filling of gas and other substances is disposed. Two electrodes protrude into the void, and between them, in operation of the gas discharge lamp, an electric arc develops. On the outside of the discharge vessel, in the region of the void, two auxiliary electrodes of opposite polarity are disposed facing one another. The auxiliary electrodes are formed by coating the outside of the discharge vessel with electrically conductive material. Prior to and optionally also during the ignition of the gas discharge lamp, high-frequency high voltage is applied to the auxiliary electrodes, which facilitates the ignition of the gas discharge lamp.

Abstract: The invention relates to the capacitive modulation of the field distribution in a silent discharge lamp 1, by a structured, electrically conductive device 2 for definition of preferred locations for discharge structures in the lamp 1.

Abstract: A flash lamp (10), comprising a gas-filled discharge tube (10) made of glass and, at each end, a power electrode (14, 15) that is sealed by means of a glass solder (13), has a glass including one or more of the following U.V. transmission values Tw: at 180 nm: Tw>5%, preferably >9 %; at 200 nm: Tw>30%, preferably >45%; at 254 nm: Tw>60%, preferably >80%. The inside diameter of the discharge tube (11) may be larger than 1.2 times the value of the plasma channel diameter. The starting electrode (16) may be part of the reflector (30-33) or be connected electrically thereto. Flash capacitor (42) may be designed for a charging voltage above 370 volts, preferably above 400 volts.

Abstract: The invention relates to a high-pressure discharge lamp of the ceramic metal halide type of the Philips MasterColor series having a molybdenum coil wrapped around the discharge vessel and at least a portion of the electrode feed through means, and having power ranges of about 150 W to about 1000 W. Such lamps are provided with a discharge vessel which encloses a discharge space. The discharge vessel has a ceramic wall and is closed by a ceramic plug. An electrode which is located inside the discharge space is connected to an electric conductor by way of a leadthrough element. The leadthrough element projects through the ceramic plug with a close fit and is connected thereto in a gastight manner by way of a sealing ceramic. The leadthrough element has a first part which is formed by a cermet at the area of the gastight connection.

Abstract: The cold cathode fluorescent flat lamp includes an enclosure chamber sealed by two reciprocally parallel plates of glass and containing a gas therein, an anode and a cathode disposed in the enclosure chamber, wherein the cathode is parallel to the anode, an auxiliary anode disposed between the anode and the cathode and being parallel to the cathode, wherein the auxiliary anode is attached to a surface of either plates of glass, and a printed circuit board for providing a voltage for the anode and the cathode.

Abstract: A non-oxidizing electrode arrangement for an excimer lamp that is formed by coating an electrode of the lamp with a layer of protective layer that prevents the electrode from oxidizing. The protective layer is preferably transparent and possesses a low permeability for oxygen (e.g., silicon oxide, magnesium fluoride, calcium fluoride). The interior of the excimer lamp is evacuated to a pressure level that is lower than the pressure level surrounding the excimer lamp at any time during the non-oxidizing electrode formation process in order to assist in preventing the excimer lamp from fracturing.

Abstract: In a lamp and method for fabricating the same, an outer surface of the lamp tube is dipped into a conductive transparent solution for forming an electrode by a predetermined depth, and then the lamp tube is pulled out from the solution. Accordingly, an electrode having different profiles is formed on the outer surface of the tube body. Also, the outer surface of the lamp tube is dipped into the solution by an acute angle, and is pulled out from the solution. Therefore, a problem of a nonuniform brightness between lamps is not generated, and light utilization efficiency is much enhanced even when using a plurality of lamp in parallel connected to a power supply.