Abstract: A high-intensity discharge (HID) lamp comprising a discharge vessel including a first and a second end region and defining an arc chamber containing an arc generating medium, a cathode and an anode in the first and the second end regions of the discharge vessel, respectively, the cathode and the anode each comprising a terminal end disposed within the arc chamber and separated by an arc gap, and an electrically conductive starting aid configured to initiate a dielectric barrier discharge (DBD) with the anode at or after a voltage across the first and second electrodes reaches an open circuit value. A ballast may control power provided to the HID lamp.

Abstract: A gas-discharge lamp (deuterium lamp) is provided having a lamp bulb (26) filled with gas, an anode (12) disposed inside the lamp bulb, a cathode (10) spaced from the anode inside the lamp bulb, a housing having a molded body (18), a rear housing wall (24), and a housing base made at least partially of electrically nonconductive material. The housing base includes a housing front (16), an intermediate housing wall (22), a cathode space (28), and a cathode shielding window (20). The cathode shielding window is insulated from the molded body and/or is made of an insulating material. The gas-discharge lamp is particularly applicable for analytical purposes.

Abstract: Various embodiments relate to an integrated gas discharge lamp including a lamp base, a gas discharge lamp burner and an ignition electronics, wherein the integrated gas discharge lamp includes an operation electronics for operating the gas discharge lamp burner, and the gas discharge lamp burner, the ignition electronics, and the operation electronics are unseparably coupled with each other.

Abstract: A high-pressure discharge lamp comprising an arc tube, the arc tube including: a light-emitting part which is substantially ellipsoidal; and sealing parts which extend from either end of the light-emitting part and in which bases of electrodes are sealed, the arc tube enclosing 0.2 mg/mm3 to 0.4 mg/mm3 of mercury, the high-pressure discharge lamp having a power rating greater than 355 W and not greater than 600 W, wherein 5.4?D?5.8 and 3.1?x?D?2.3 when 355?P?380, 5.8?D?6.2 and 3.1?x?D?2.7 when 380?P?450, and 6.2?D?6.6 and 3.1?x?D?3.3 when 450?P?600, where P denotes the power rating in watts of the high-pressure discharge lamp, D denotes an inside diameter in millimeters of the light-emitting part 104 with reference to a midpoint between the electrodes 101, and X denotes a wall thickness in millimeters of the light-emitting part 104 with reference to the midpoint between the electrodes 101.

Abstract: A high performance fluorescent lamp includes an air-vacuum glass envelope having sealed ends, and a light cavity filled with inert gas and coated with a phosphor layer at an inner wall of said light cavity; two electrodes sealed at each of the sealed ends of the glass envelope; and a narrowing channel integrally formed at one of the sealed ends of the glass envelope at a location communicating with the light cavity of the glass envelope. Therefore, the amalgam is contained within the narrowing channel at a position forming a preset distance between one of the electrodes sealed at the corresponding sealed end and the amalgam.

Abstract: The present invention aims to provide a metal vapor discharge lamp that has an outer tube less likely to break, and that is obtained at low manufacturing cost. A metal vapor discharge lamp 10 comprises: an outer tube 300 having an open end portion 301 at one end and a closed end portion 302 at another end; an inner tube 200 housed in the outer tube 300; a discharge tube 100 housed in the inner tube 200; and a base 400 attached to the open end portion 301 of the outer tube 300, wherein relationships of t?1.1×d?0.4; 0<d; and 0.3?t are satisfied, where t denotes a minimum thickness, in millimeters, of the closed end portion 302 of the outer tube 300, d denotes a shortest distance, in millimeters, in a direction of a longitudinal axis of the outer tube 300, between an inner surface 304 of the closed end portion 302 of the outer tube 300 and an outer surface 204 of an end portion 202 of the inner tube 200, the end portion 202 being located opposite from the base 400.

Abstract: The present invention provides a light-emitting element lamp 1 capable of preventing a temperature rise of a substrate 9, on which light-emitting elements 4 are mounted, by effectively utilizing a thermally conductive casing 2 and a thermally conductive cover 5. The light emitting element lamp 1 includes a thermally conductive casing 2, a light source part 3, a thermally conductive cover 5, and an insulative cover 6. The thermally conductive casing 2 includes an irradiation opening 2b, is formed so as to be widened toward the irradiation opening 2b, has its outer circumferential surface exposed outwardly, and has a substrate mounting part 2c secured on its inner circumferential surface. The light source part 3 has a substrate 9 having the light-emitting elements 4 mounted thereon and causes the substrate 9 to be thermally coupled to and attached to the substrate mounting part 2c of the thermally conductive casing 2.

Abstract: The invention relates to a metal halogen lamp comprising an elongated arc tube enclosed in a transparent casing, wherein the arc tube is made up of a hollow glass body comprising two end portions and a middle portion, and electrode is arranged on the respective end portion, which electrodes, each having an electrode end, upon connection to a power source and during operation of the metal halogen lamp, generate an arc between them; and the glass body encloses halogens (h) and metal atoms (m) and has a wall thickness which is thicker on the end portions than on the middle portion. The thicker end portions each have a length (L1) of at least one-third of the total length (L) of the arc tube.

Abstract: A plasma lamp. The lamp includes a housing having a spatial volume defined within the housing. In a specific embodiment, the spatial volume has an inner region and an outer region. The lamp also has a support region coupled to the inner region of the spatial volume and a support body having an outer surface region slidably inserted and disposed within or partially disposed the support region. In a preferred embodiment, the support body has a support length, a support first end, and a support second end. The plasma lamp has a gas-filled vessel coupled to the support first end of the support body. In a preferred embodiment, the gas filled vessel has a transparent or translucent body, an inner surface and an outer surface, a cavity formed within the inner surface. In a preferred embodiment, the cavity is sealed and includes a fill material, which is capable of discharge. The lamp has an rf source operably coupled to at least the first end of the gas-filled vessel.

Abstract: An excimer discharge lamp includes an electric discharge container having a pair of plates which face each other and connected by a side wall. An electrical discharge space is formed between the plates. A pair of external electrodes are provided on exterior surfaces of the plates. A light emission gas of rare gas, halogen or halide is enclosed in the electrical discharge space. The pair of plates and the side wall are made of sapphire, YAG, or single crystal yttria. Impurities which exist in an inner surface of the electric discharge container surrounding the electrical discharge space contain at least silicon, carbon, or cerium, and the quantity thereof is 0.6 ng/cm2 or less.

Abstract: An energy-saving fluorescent lamp with two or more integrated-shaping discharge tubes, automatically formed by a one-shot modelin to a U-tube with a desired curvature. Each of discharge tubes are disposed upon a conveyer for being shipped into a heater and is treated in portions of the discharge tube by one or more said wide flame nozzles of preset temperatures for a preset duration simultaneously into a U-tube with a pair of leg tubes for fitting into a pair of integrated-shaping dies when said mechanic arm opens up said pair of dies for molding into a U-tube with a preset curvature radius.

Abstract: A xenon short arc lamp for a digital projector, includes an anode, a cathode having a cathode main body that is made of tungsten containing electron emissive material, and an arc tube made of silica glass, wherein a supply source of carbon is formed on a metal portion in the arc tube except a tip area of the cathode, and the carbon is supplied to the tip of the cathode through a gaseous phase during lamp lighting, so that a surface layer of the cathode is melt.

Abstract: A metal halide lamp includes a ceramic discharge vessel and two electrodes. The discharge vessel encloses a discharge volume containing an ionizable gas filling including at least a metal halide, two current lead-through conductors connected to the respective electrodes, and a seal of a sealing material through which at least one of the respective current lead-through conductors issues to the exterior of the discharge vessel. The sealing material of the seal includes a ceramic sealing material including cerium oxide, aluminum oxide and silicon dioxide as a mixture of oxides and/or one or more mixed oxides.

Abstract: A compact fluorescent lamp which includes a compact fluorescent light source and a ballast operatively connected to and controlling operation of the light source. An outer light transmissive envelope surrounds the light source and an elastic protective shield surrounds the ballast.

Abstract: A cold cathode lighting system comprising a cold cathode lamp with electrodes on either end of the lamp, oriented such that it includes an electrode extension in order to return the electrode to the same parallel position as the main body of the lamp. The lamp's electrodes are inserted into a casing that is comprised of a casing covers on either ends of the casing which may slid be opened. The casing covers interact with a electrode cover assembly underneath the casing covers, that allows the lamp to be inserted when the casing covers are opened. The closing of the casing covers will safely engage an interconnection with the lamp's electrodes through the electrode cover assembly.

Abstract: A stylable lamp with bulb including model of the present invention includes a luminous base, a bulb, and a connecting portion. The bulb includes a model and a covering layer. The covering layer is made of transparent material. The model is embedded in the covering layer substantially. The model has an optical property different from that of the covering layer. As such, patterns and sculptures can be provides with the model. A smooth outer surface can be formed with the covering layer. An artistic lamp provided by the present invention can be cleaned up easily. The connecting portion connects the holder and a lamp adapter together and includes a scalable conjunction portion which is able to keep electric power supply continuing when position of the holder is adjusted.

Abstract: An image display device is provided with a chassis supporting a display panel on its front surface, circuit boards arranged within a specific region of the back surface of the chassis, a back cover having an edge portion that covers the outside of the specific region of the back surface of the chassis and a projecting portion that accommodates the circuit boards, and a fan arranged inside the space defined by projecting portion. The projecting portion includes a main wall and a peripheral wall, and the peripheral wall is provided with an air inlet and an air outlet. The edge portion is provided with a sound absorbing material on its outer wall surface in the vicinity of the air outlet.

Abstract: The present invention relates to a coaxial waveguide electrodeless lamp. The lamp is formed in analogy to coaxial waveguide cables, with an outer conductor, a central conductor, and a gas-fill vessel made of dielectric material between the outer conductor and the inner conductor. The gas-fill vessel is substantially hollow and filled with substances that form a plasma and emit light when RF radiation carried by the central conductor and ground conductor interacts with the substances in the gas-fill vessel. The present invention also relates to a leaky waveguide electrodeless lamp. The lamp is formed in analogy to leaky waveguides, with a conductor, a ground conductor, and a gas-fill vessel made of dielectric material butted against the conductor and encompassed by the ground conductor. The leaky waveguide electrodeless lamp emits light from a plasma similar to light-emission action of the coaxial waveguide electrodeless lamp described above.

Abstract: A method of forming a discharge lamp and the resultant discharge lamp include providing an arc tube having first and second ends offset from a central arcuate or curvilinear portion of the discharge chamber formed between the arc tube ends. Electrodes extend from the first and second ends and at least partially into the discharge chamber which is locally substantially rotationally symmetric, i.e., substantially circular cross-section over a length thereof. Preferably, the arc tube and discharge chamber have a curvilinear conformation where the first and second ends are located below the central portion of the arc tube and associated discharge chamber in horizontal orientation during operation. Terminal ends of the electrodes preferably follow a local axis of the curvilinear conformation. The wall thickness of the discharge chamber may be alternatively constant or non-constant along a longitudinal extent thereof.

Abstract: A ceramic discharge lamp and a method of making the lamp includes a ceramic discharge chamber with two concave parts that are attached to each other at a seam, and a ceramic reflector directly attached to an exterior surface of the discharge chamber at the seam, or directly attached to a ceramic capillary that is attached to one of the two concave parts. The lamp finds particular application where focused light is required, such as injection of light into a fiber optic device. The lamp can be very small and has an advantage that the discharge chamber is isolated from the reflective surfaces so that the optically active parts of the reflector are not covered with salt from the preferred metal halide lamp fill.

Abstract: The present invention aims to provide a small-sized high-efficiency high pressure discharge lamp that exhibits favorable light intensity distribution properties and is less likely to cause breakage of an arc tube. The present invention is a high pressure discharge lamp 101 comprising: an arc tube 110 that includes; a light-emitting part 111 having a substantially spherical shape and having mercury enclosed therein; and a pair of sealing parts 112 extending from opposite sides of the light-emitting part 111; and a pair of electrodes 130 that are arranged in the arc tube 110 such that an end of each electrode is sealed by a respective sealing part and the other ends of the electrodes oppose each other in the light-emitting part. The enclosed mercury has a density of 0.2 to 0.4 [mg/mm3] inclusive. A distance W from a contact point S to a center O is 3.0 to 5.0 [mm] inclusive. A distance CO from a contact point TO to the center O is 1.5 to 3.0 [mm] inclusive.

Abstract: A high intensity discharge light source includes an arc tube having a longitudinal axis and discharge chamber formed therein. The light source includes first and second electrodes having inner terminal ends spaced from one another along the longitudinal axis. Each electrode extends at least partially into the discharge chamber. The discharge chamber is deformed so that its internal geometry is substantially rotationally asymmetric about its longitudinal axis, and is substantially mirror-symmetric relative to a plane spanned by the longitudinal axis and by another transverse axis that is perpendicular to the longitudinal axis and is vertical in a horizontal arc tube orientation, as well as substantially mirror-symmetric relative to a central plane perpendicular to the longitudinal axis.

Abstract: A discharge lamp bulb has: an outer tube formed by sealing two ends of an arc tube-surrounding portion by first seal portions, the outer tube being made of quartz glass; a ceramic arc tube mounted inside the arc tube-surrounding portion; electrodes that are supported so as to be opposed to each other inside the arc tube by the second seal portion; lead wire assemblies connected to the electrodes and fixed to the first seal portions; and an electrically insulating plug that includes a metal terminal and that holds the outer tube. One of the inside lead wires is provided with a stress-relieving portion. A hollow cylindrical portion that houses the stress-relieving portion therein and that holds a periphery of the stress-relieving portion is provided integrally with the outer tube.

Abstract: In various embodiments, a high-pressure discharge lamp is provided. The high-pressure discharge lamp may include a discharge vessel which is accommodated in a tubular outer bulb, wherein a major part of the outer bulb is closely surrounded by a transparent sleeve composed of highly heat-resistant plastic.

Abstract: Methods and apparatuses for starting a discharge lamp are disclosed. In some embodiments, a lamp has an outer envelope connected at one end to a base and enclosing multiple double-ended arc tubes. Each arc tube is electrically connected at one end to an electrical lead positioned proximate the base of the lamp and at the other end to an electrical lead positioned proximate the distal end of the envelope. A voltage pulse is applied to the electrical lead positioned proximate the distal end of the envelope. Random starting of the arc tubes may thus be effected so that each arc tube is about equally likely to start, promoting uniformity of arc tube usage and long lamp life. Multiple arc tubes may be bulbous and staggered in axial displacement for space efficiency, and a diffusing shroud may improve optical characteristics. A heat barrier may facilitate fast restrikes.

Abstract: A metal vapor discharge lamp comprising an arc tube, an airtight tube housing the arc tube, and a base bonded to one end of the airtight tube with use of an adhesive, wherein the airtight tube is covered by a protective tube to improve safety as compared to a case where the protective tube is simply bonded to the base with an adhesive. The protective tube is fixed to the base with a double fall-off prevention structure, and latched to the base when a force including gravity and inertia acts on the protective tube toward the closed end of the protective tube in the axial direction thereof. The above-described structure eliminates the need of arranging the protective wall for securing the safety on the side of a lighting device on which the metal vapor discharge lamp is to be fixed, thereby preventing the lighting device from becoming large in size.

Abstract: A mercury-free vehicle discharge bulb is provided. The discharge bulb includes an arc tube a glass shroud extending in a front-rear direction to cylindrically surround the arc tube, a metal band surrounding and holding a rear end portion of the glass shroud, and an insulating plug supporting the glass shroud in a fixed manner via the metal band. A ratio S1/S2 of a first area S1 to a second area S2 is 1 to 3. The first area S1 is a surface area of an outer surface of the glass shroud in a region from a circumference of the glass shroud at a position of a center of the discharge space to a front end edge of the metal band, and the second area S2 is a surface area of a surface of the metal band that touches the glass shroud.

Abstract: A ceramic discharge lamp in which an electric discharge gas is enclosed in an arc tube which is made up of a ceramic member and a metal member. The ceramic discharge lamp includes a first brazing material, which is formed so as to be fixed on a surface of the ceramic member without being covered with the metal member; a titanium layer, which is formed between the first brazing material and the ceramic member; and a second brazing material, which is continuously formed from the first brazing member, that covers part of the metal member so that the ceramic member and the metal member are airtightly joined to each other.

Abstract: A dielectric barrier discharge (DBD-) lamp (1) comprising a discharge volume (2) which is delimited by a first and a second wall (4, 5) is disclosed, wherein both walls (4, 5) are exposed to different electrical potentials by means of a power supply (11) for exciting a gas discharge within the discharge volume (2). By providing at least one electrically conductive ignition aid or igniter which extends within the discharge volume (2) and which electrically contacts the first and the second wall (4, 5) with each other, a significant reduction of the initial ignition voltage of the lamp (1) can be obtained, especially after long pauses of operation of the lamp (1).

Abstract: A high-pressure discharge lamp having a discharge vessel with a central part that bulges out and which defines a lamp axis with a sealing part being attached to each end of the discharge vessel. The shaft of in each case one electrode, comprising a head and a shaft, is sealed in the sealing part, and a capillary tube closely surrounding the shaft of the electrode is between the central part of the discharge vessel and the sealing part. A tubular neck is integrally formed as a component of the discharge vessel between the central part and the capillary tube, and is separated from the shaft.

Abstract: A High Intensity Discharge (HID) lamp (100) comprised of a discharge chamber (130) disposed within an anti-oxidation envelope (120) and protected by a shroud (110). The shroud encloses the anti-oxidation envelope and thereby the discharge chamber to prevent the emission of fragments in the event that the discharge chamber fails. The shroud is positioned around the anti-oxidation envelope by means of a compressed spring (170) at one end of the envelope tensioned against a collar (160) attaching the other end of the envelope to a base of the lamp.

Abstract: The present invention is directed to a method for manufacturing a high-pressure discharge lamp including: a spherical portion forming a light-emitting portion (1a); sealing portions that are connected with both ends of the spherical portion; an electrode (2a) that is sealed to each of the sealing portions; and a metal foil (3a) that is connected with a rear end of each electrode. A vessel provided with a cylindrical glass tube (8) on both ends of the spherical portion is used, a connection structure of the metal foil and the electrode are disposed in the glass tube such that a front end of the electrode is positioned in the spherical portion, and the glass tube is melted by heat and shrunk for sealing the metal foil and the electrode so as to form the sealing portion. An inner diameter ? of the glass tube before the heat-melt processing and a distance L from an edge of the metal foil to the internal space of the spherical portion are set to satisfy a relationship of L/??1.

Abstract: A start assisting light source is configured such that it can be mounted simply and reliably at a position capable of efficiently radiating UV-light for enhancing the starting performance of a high pressure discharge lamp to discharge chamber without being heated to a high temperature during lighting of the lamp and also adopted to a simple constitution of not increasing the manufacturing cost. A start assisting light source includes an airtight vessel filled with a rare gas and a pipe member that penetrates through the vessel is mounted to an electrode lead which protrudes from the end face of an electrode seal portion secured to a bottom hole of the concave reflector by inserting the electrode lead through the pipe member.

Abstract: A high intensity discharge light source includes an arc tube having a longitudinal axis and a main central discharge chamber formed therein. The arc tube includes first and second electrodes having inner terminal ends spaced from one another along the longitudinal axis. Each electrode extends at least partially into the main central discharge chamber or reaches the end portions of the main central discharge chamber. The arc tube includes first and second sub-chambers located at opposite ends of a main central discharge chamber. The sub-chambers are located entirely axially outward from the inner terminal ends of the electrodes to form cold spot locations for the dose pool outside the main central discharge chamber.

Abstract: In various embodiments, a high pressure discharge lamp may comprise a ceramic elongate discharge vessel with an axis and with a central middle part and two tapering ends, wherein the ends are closed by seals containing electrode systems, and wherein a filling comprising metal halides is situated in the discharge vessel, in which the lamp further comprises a fin-like structure including at least three fins located on at least one tapering end, the structure comprising an attachment having a leading root directly on the discharge vessel and having a trailing root from which an undercut extends in the direction of the seal, wherein the axial length of the attachment is chosen and wherein the axial length of the undercut is at least 30% of the length of the attachment.

Abstract: The present invention relates to a high pressure sodium lamp comprising an evacuated cover including a base part, an arc tube comprising a first and a second electrode each being connected to the base part via conductor members. At least one conductor member is arranged isolated by a shielding member for preventing, during operation of the high pressure sodium lamp, the photo electronic stream from the at least one conductor member to the arc tube. The lamp comprises a second arc tube.

Abstract: A vehicle discharge lamp includes: an arc tube including a light emitter, a cathode side fine tube and an anode side fine tube; a cathode side connecting rod; an anode side connecting rod; a cathode side electrode and an anode side electrode disposed within the arc tube. The anode side fine tube includes an expansion portion and an insertion portion formed continuously with the expansion portion, a portion of the anode side electrode is situated within the expansion portion with a clearance, the expansion portion includes a uniform diameter portion with its inside diameter set uniform in an anode side electrode's axial direction, the light emitter includes a flat portion with its axial direction set coincident with the anode side electrode's axial direction, and an inside diameter of the uniform diameter portion is set larger than that of the insertion portion and smaller than that of the flat portion.

Abstract: A compact mercury-free high intensity discharge (HID) lamp particularly suitable for automotive headlamp application has a pair of spaced and opposing electrodes sealed in a transparent enclosure defining an arc chamber. An outer transparent envelope has a first and second textured light scattering stripe on its interior surface on substantially opposite sides thereof extending continuously from one electrode to the other. The stripes widen the cross-sectional luminance distribution of the arc discharge image and make the image of the arc straighter while keeping light scattering losses at minimum so that the reduced arc peak luminance is still at the desired level. In other versions, a plurality of textured light scattering stripes of smaller widths are employed to replace a single wider light scattering stripe.

Abstract: A technique for mounting single or double ended quartz halogen or HID burner on threaded incandescent lamp base facilitating high volume production and use of existing manufacturing equipment. The pinched end portion of the burner is received in a slot formed in an end of a ceramic tubelet and secured therein and supported thereon by cementing or elastic adhesive bond material. The tubelet has its opposite end secured over a reduced diameter portion of a stem extending from the incandescent lamp base. An outer bulb of translucent or transparent material is received over the base-burner sub-assembly and the bulb secured to the base.

Abstract: The invention describes a mercury-free high intensity gas-discharge lamp (1) comprising a discharge vessel (5) enclosing a fill gas in a discharge chamber (2) and comprising a pair of electrodes (3, 4) extending into the discharge chamber (2), for which lamp (1) the fill gas in the discharge chamber (2) is free of zinc iodide, and the fill gas includes a halide composition comprising sodium iodide and scandium iodide to a combined proportion of at least 30 wt % and at most 95 wt %, and thulium iodide, to a proportion of at least 5 wt % and at most 70 wt %.

Abstract: In an excimer lamp, rare gas and fluorine are enclosed inside a translucent ceramics arc tube. External electrodes are formed on an outer surface of the arc tube. A condition of 2.5+0.5 log(CF)?G?14?4 log(CF) is satisfied in the case of 0.1?CF?10, wherein G (mm) is a discharge gap in the arc tube and CF (%) is molar concentration of the fluorine.

Abstract: A fluorescent lamp includes at least two lighting elements, which emit lights with different color temperatures. In addition, the lighting illuminations of the lighting elements can be controlled by independent driving devices. Thus, the user can adjust the color temperature of the light emitted from the fluorescent lamp.

Abstract: A compact mercury-free high intensity discharge (HID) lamp particularly suitable for automotive headlamp application has a pair of spaced and opposing electrodes sealed in a transparent enclosure defining an arc chamber. An outer transparent envelope has a first and second textured light scattering stripe on its interior surface on substantially opposite sides thereof extending continuously from one electrode to the other. The stripes widen the cross-sectional luminance distribution of the arc discharge image and make the image of the arc straighter while keeping light scattering losses at minimum so that the reduced arc peak luminance is still at the desired level. In other versions, a plurality of textured light scattering stripes of smaller widths are employed to replace a single wider light scattering stripe.

Abstract: A mercury-free arc tube for a discharge lamp unit including a closed glass bulb in which main light emitting substances of NaI, ScI3, and ScBr3 and buffer substances of InI and ZnI2 are enclosed together with Xe gas, and wherein an amount of enclosed ScBr3 is in a range of about 5 wt % to about 24 wt % relative to a total weight of the substances enclosed in the closed glass bulb. The mercury-free arc tube may also include a shroud glass tube, which is surrounds the closed glass bulb and a pair of electrodes, which are disposed to be opposed to each other in the closed glass bulb.

Abstract: An electrodeless plasma lamp is described comprising a lamp body including a solid dielectric material. The lamp includes a bulb received at least partially within an opening in the solid dielectric material and a radio frequency (RF) feed configured to provide power to the solid dielectric material. A conductive material is provided adjacent to the bulb to concentrate the power proximate the bulb. The conductive material may be located below an upper surface of the solid dielectric material. The conductive material may modify at least a portion of an electric field proximate the bulb so that the portion of the electric field is oriented substantially parallel to an upper surface of the lamp body.

Abstract: To avoid a decline in the reflectivity of an ultraviolet reflection film caused by lighting for an extended period of time and providing a uniform illuminance an excimer lamp has a silica glass discharge vessel with electrodes on opposite sides of the discharge vessel, wherein excimer discharge is generated in the discharge space of the discharge vessel, wherein an ultraviolet reflection film made of silica particles and alumina particles is formed on a surface exposed to the discharge space and wherein the mean particle diameter of silica particles is at least 0.67 times as large as the mean particle diameter of the alumina particles. The alumina particles in the ultraviolet reflection film preferably constitute at least 5 wt % and more preferably at least 10 wt % of the sum of silica particles and alumina particles.

Abstract: A plasma crucible has a through bore and two tubes butt scaled on to the end faces of the crucible. One of the tubes is closed prior to the filling of the crucible. The tube is tipped off and worked in a glass lathe to form it to have a flat end. After evacuation, dosing and gas fill, the other tube is tipped off in the similar manner.

Abstract: A preferred embodiment low stress electrode and a preferred array of microcavity plasma devices of the invention include a plurality of thin metal first electrodes and stress reduction structures and/or geometries designed to promote the flatness during and after processing. The first electrodes are buried in a thin metal oxide layer which protects the electrodes from the plasma in the microcavities. In embodiments of the invention, some or all of the electrodes are connected. Patterns of connections in a one- or two-dimensional array of microcavities can be defined. In preferred embodiments, the first electrodes comprise circumferential electrodes that surround individual microcavities. A second thin layer having a buried, second electrode is bonded to the first thin layer. A packaging layer, e.g., a thin glass or plastic layer, seals the discharge medium (a gas or vapor, or a combination of the two) into the microcavities.

Abstract: A light-guide type light-emitting device includes a heat-dissipating unit, a conductive unit, a light-emitting unit and a light-guiding unit. The heat-dissipating unit includes at least one heat-dissipating body. The conductive unit is disposed on a first side of the heat-dissipating body. The light-emitting unit is disposed on a second side of the heat-dissipating body, and the light-emitting unit includes a plurality of light-emitting elements electrically connected to the conductive unit. The light-guiding unit includes at least one light-guiding element disposed on the light-emitting unit for receiving light beams generated by the light-emitting unit, and the light-guiding element has a plurality of micro light-guiding structures formed on the outer surface thereof. Hence, the instant disclosure can not only mate the light-emitting unit with the light-guiding unit to solve glaring problem as a result of using LED, but also provides a wider light-emitting range.

Abstract: An electrodeless discharge lamp is provided which prevents the problem of decrease in strength due to degradation of resin material, allowing secure fitting of a lamp part and a coupler member to a base even if it is used for a long time. A bulb containing a discharge gas and a coupler member for generating a high frequency electromagnetic field to excite the bulb are detachably fitted to each other via a base for fixing and supporting the bulb. The bulb and the base form a lamp part. The base comprises a base frame formed of a metal such as aluminum and a base cover formed e.g. of synthetic resin. The base frame has a coupler member fitting portion which is provided at a lower part thereof and fitted to the coupler member, wherein bulb fixing posts provided to stand on the coupler member fitting portion fix a bulb outer tube. Thus, the fitting portions of the lamp part and the coupler member to the base undergo less material degradation than a conventional one which uses a base of resin material.