Abstract: A high temperature heater lamp including a ceramic envelope is disclosed. The ceramic envelope is substantially infrared transparent and is composed of a refractory ceramic. The heater lamp also includes two lead wires communicatively coupled via a filament. The filament is enclosed within the ceramic envelope, which is evacuated. The heater lamp may include at least two metallic IR shields within the ceramic envelope, at least one located on either side of the filament. The filament may be tungsten, a carbon filament, or molybdenum. At least one end of the ceramic envelope may be sealed with a metal cap affixed to the ceramic envelope by a high vacuum sealant. The heater lamp may be configured to operate at above 1500° C. The ceramic envelope may have a wall thickness less than 1 mm thick.

Abstract: A gas discharge lamp, photoionization sensor employing the gas discharge lamp, and method of manufacturing the lamp. The lamp includes a longitudinally extending strip of getter within the housing. The method of manufacture includes the steps of (i) obtaining a glass tube, (ii) constricting the tube intermediate the longitudinal ends to divide the bore into first and second chambers in fluid communication with one another through a passageway in the constriction, (iii) attaching an ultraviolet transparent window over the open end of the first chamber, (iv) inserting a strip of getter into the first chamber through the passageway in the constriction, (v) purging the first chamber with a noble gas, and (vi) heating the tube at the constriction to detach the first chamber from the second chamber and seal the constricted end of the first chamber.

Abstract: A fast starting induction RF fluorescent lamp capable of changing illumination level through a burst-mode dimming facility, comprising a dimming facility enabling the induction RF fluorescent lamp to dim in response to a control signal, and with structures within the bulb envelope that facilitate rapid luminous development during a turn-on phase.

Abstract: A lamp (10) is described comprising a burner (14) fixed to a lamp base (12). The lamp base (12) includes a top wall oriented towards the burner (14). Within the top wall, an opening (28) is provided. The lamp base (12) further comprises an insulation chamber (42) where an electrical component, e. g. a transformer (54), is embedded within an insulation compound (43). In order to prevent possibly spilled insulation compound from leaking through the opening (28), a raised retention wall (46) is provided around the opening.

Abstract: An induction RF fluorescent lamp, comprising: a lamp envelope with a re-entrant cavity and evacuation tube; a power coupler, wherein the power coupler is located inside the re-entrant cavity; an electronic ballast, wherein the electronic ballast provides appropriate voltage and current to the power coupler; and an amalgam held within a capsule located above the power coupler within the lamp envelope, wherein the capsule is positioned with a mount comprising at least one wire attached to the capsule and having at least two wire ends extending from the capsule into the evacuation tube with contact made between the wire ends and the interior surface of the evacuation tube of the re-entrant cavity.

Abstract: A lamp including a first and second lamp substrate with a first and second external electrode, respectively, and a first and second internal phosphor coating, respectively, wherein the first phosphor coating is a phosphor monolayer. A method of manufacturing a lamp, including screen-printing a phosphor monolayer on a first lamp substrate; screen-printing a phosphor layer on a second lamp substrate; joining the phosphor-coated faces of the first and second lamp substrates together with a seal; and joining a first and second electrode to the uncoupled exterior faces of the first and second lamp substrates, respectively.

Abstract: A long life high pressure arc discharge lamp configuration is disclosed. In some embodiments, the lamp includes a first non-cycling high pressure arc tube having a first ignition aid and a second arc tube electrically connected in parallel to the first arc tube. A lamp envelope is provided about the first and second arc tubes. In some cases, each of the first and second arc tubes is a non-cycling high pressure sodium arc tube, and each is configured with an ignition aid strip running lengthwise down the corresponding arc tube. In some cases, the first and second arc tubes are oriented such that their respective ignition aid strips are effectively 180 degrees+/?90 degrees away from each other, or so that their respective ignition aid strips are effectively 180 degrees+/?5 degrees away from each other. In some such, the second arc tube is a low-pressure arc tube.

Abstract: Conventional mercury vapor discharge lamps include a closed emitter tube made of quartz glass having an emitter tube end, a gas-tight seal in the region of the emitter tube end, and two electrodes arranged inside the emitter tube for generating a discharge in a discharge zone between the electrodes, as well as an amalgam reservoir. In order to provide a mercury vapor discharge lamp having an amalgam reservoir, which can be operated at high efficiency at variable irradiation power and also is easy and inexpensive to manufacture, an annular gap is formed in the region of the emitter tube end between a quartz glass tube and the emitter tube, and the amalgam reservoir is arranged inside the annular gap.

Abstract: A device for producing x-rays includes: a housing that includes a folded high-voltage multiplier coupled to a filament transformer, the transformer coupled to an x-ray tube for producing the x-rays. A method of fabrication and an x-ray source are disclosed.

Abstract: Disclosed are devices and methods related to flat gas discharge tubes (GDTs). In some embodiments, a plurality of GDTs can be fabricated from an insulator plate having a first side and a second side, with the insulator plate defining a plurality of openings. Each opening can be covered by first and second electrodes on the first and second sides of the insulator plate to thereby define an enclosed gas volume configured for GDT operation. Various examples related to such GDTs, including electrode configurations, opening configurations, pre-ionization features, grouping of a GDT with another GDT or device, and packaging configurations, are disclosed.

Abstract: Operation to produce an intermediate product for a crucible for a LUWPL is as follows: a) a body 2 is preheated and placed on a support, with its bore concentric with a tube 4 supported in a chuck and connected to a inflation means; b) the tube is heated with the chuck being rotated for evenness of heating; c) when the temperature of the tube is detected to be the softening point of the quartz of the tube, its rotation is stopped and it is advanced into a bore 3 in the body 2; d) advance is stopped when the distal, sealed end is detected to have reached a determined protrusion 18; e) simultaneously with the advance being stopped, inflation gas is admitted into the tube, to inflate it albeit it marginally, and bring its outer surface 5 into intimate contact with the surface 6 of the bore 4.

Abstract: A ceramic discharge vessel for discharge lamps is provided, with a central main part which extends between the tips of two electrodes and which is essentially tubular and with two ends for fixing and sealing an electrode system, wherein the ceramic discharge vessel has a longitudinal axis and wherein the main part consists of two halves which are connected in the middle of the main part wherein the two halves are frustoconically shaped with a draft angle p of 0.5°?p?7.0°.

Abstract: To prevent bending of an electrode shaft portion by a method which requires minimum increase in production cost, in an electrode mount for a high pressure discharge lamp. A manufacturing method of an electrode mount for the high pressure discharge lamp includes: a process of subjecting the electrode mount to a heat treatment, the electrode mount including an electrode and a metal foil which are welded to each other; and an oxidation process of producing an oxide on a surface of the electrode shaft portion of the electrode by laser irradiation to form an oxidation portion on the surface, wherein a laser irradiation position is determined such that a whole or part of the oxidation portion is included in a sealing portion of the high pressure discharge lamp when the electrode mount is embedded in the sealing portion.

Abstract: An irradiation device is provided having a housing having an interior chamber and an infrared emitter arranged therein. The infrared emitter has an emitter tube made of high silica content glass having a round cross section and a defined outer diameter. Electrical connection elements are made of a metallic material and led out from the emitter tube through a seal. In order to provide the emitter with a long service life and potentially higher output, which is also suitable for being enclosed by a seal that separates the regions of different media, temperatures, or pressures, the emitter tube end also has a round cross section and the defined outer diameter. Between the electrical connection element and the emitter tube there is a seal containing at least one transition glass, which has a thermal expansion coefficient lying between that of the metallic material and that of the high silica content glass.

Abstract: A lucent waveguide plasma light source has a quartz waveguide body with a central through bore. The bore has orifices at its opposite ends, opening centrally of flat, end faces of the body. Between these the body has a circular cylindrical periphery. A drawn quartz tube is inserted into the body. The tube has its one end closed and a collar which locates the tube in the bore and is fused to the faces at the orifices of the bore. The tube is evacuated and charged with excitable material and closed as a sealed void. A Faraday cage and an antenna in a bore in the body are provided for feeding microwave energy to the light source. When powered with microwaves, resonance is established in the wave guide and a plasma is established in the void, wherein Light radiates and leaves the waveguide and Faraday cage radially of the periphery.

Abstract: A dielectric barrier discharge lamp includes a lamp tube, a discharge gas, a support member, a first electrode, and a second electrode. The lamp tube has a first and a second sealed end. The discharge gas is filled in the lamp tube. The support member is disposed at the first sealed end and extended toward the inside of the lamp tube. The support member has an accommodating space with its opening facing the inside of the lamp tube. The first electrode is disposed in the lamp tube. A first terminal of the first electrode passes through the opening of the accommodating space. A gap exists between an end of the first terminal of the first electrode and a closed end of the accommodating space. A second terminal of the first electrode penetrates and is closely fitted with the second sealed end. The second electrode is disposed outside the lamp tube.

Abstract: Disclosed herein are lamps comprising a radiation source and a phosphor blend configured for conversion of radiation, the phosphor blend including at least two different rare earth phosphors, wherein the phosphor blend comprises at least one multimodal rare earth phosphor. Disclosed advantages may include greater lumen output than an identical lamp in which the phosphor blend, at the same loading, does not comprise at least one multimodal rare earth phosphor.

Abstract: A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit tight of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.

Abstract: A high-power ceramic discharge metal halide (CDM) lamp with a shroud-type containment assembly is disclosed. The lamp includes: a first shroud (138) with a first wall which forms a cylinder and which defines a first cavity; a second shroud (136) situated within the first cavity and which includes a second wall which forms a cylinder and which defines a second cavity situated within the first cavity of the first shroud; a first coil portion (140, 142) is situated about at least the one or the first and second shrouds (respectively); a ceramic arc tube (102) is situated in the second cavity and includes first and second openings, first and second leads (104, 106) with electrodes, and a lamp cavity (103) for containing a fill.

Abstract: The invention describes a gas-discharge lamp (1) comprising a discharge vessel (11) arranged in an outer quartz glass envelope (12), which gas-discharge lamp (1) comprises a local thermal area contact (2) between a lower surface (21) of a localised deformation (20) of the outer envelope (12) and a corresponding isolated area (22) on the outer surface (23) of the discharge vessel (11). The invention also describes a method of manufacturing a gas-discharge lamp (1), which method comprises the steps of arranging a discharge vessel (11) in an outer quartz glass envelope (12); forming a localised deformation (20) of the outer envelope (12) to create a local thermal area contact (2) between a lower surface (21) of the localised deformation (20) and a corresponding isolated area (22) on the outer surface (23) of the discharge vessel (11).

Abstract: A high pressure gas discharge lamp has electrodes that project into a discharge space surrounded by a discharge wall. The discharge space has a filling of rare gas and metal halides. The metal halide composition comprises halides of sodium and scandium with a mass ratio of halides of Sodium and Scandium of 0.9-1.5. In order to provide a lamp that can be easily manufactured and is well suited for operation at reduced power, the discharge vessel wall is of externally and internally cylindrical shape. The lamp may be manufactured by providing a cylindrical tube of quartz material, heating the tube at two distant portions and forming grooves there, inserting two electrodes into the tube and heating and pinching the tube at both ends to seal the discharge space. Manufacture is carried out without a bulb forming step such that the discharge space remains in externally and internally cylindrical shape.

Abstract: An energy saving gas discharge lamp, and method of making same, is provided. The gas discharge lamp includes a light-transmissive envelope, and an electrode within the light-transmissive envelope to provide a discharge. A light scattering reflective layer is disposed on an inner surface of the light-transmissive envelope. A phosphor layer is coated on the light scattering reflective layer. A discharge-sustaining gaseous mixture is retained inside the light-transmissive envelope. The discharge-sustaining gaseous mixture includes more than 80% xenon, by volume, at a low pressure.

Abstract: A dual external electrode fluorescent lamp and manufacturing method thereof comprising a 1st glass tube with both ends open and an inner wall optionally coated with a fluorescent material, wherein the diameter of the opened ends is extended; connecting the 1st glass tube with two 2nd glass tubes by joining both opened ends of the 1st glass tube to the two both-end opened 2nd glass tubes that have a diameter larger than that of the 1st glass tube; joining a 1st multi-tube for the enlargement of an electrode area in the one 2nd glass tube or a ‘flare’ structure having one closed end to one end of 2nd glass tube through insertion after spreading one end widely, and enlarging an electrode area in the other 2nd tube and joining a 2nd multi-tube having an exhaust port to the other 2nd tube through insertion; cutting and sealing a portion of the exhaust port after vacuuming the inside of the glass tubes and injecting discharge gas inside the glass tubes through the connection of an exhaust system to the exhaust port

Abstract: An approach to activating a getter within a sealed vacuum cavity is disclosed. The approach uses inductive coupling from an external coil to a magnetically permeable material deposited in the vacuum cavity. The getter material is formed over this magnetically permeable material, and heated specifically thereby, leaving the rest of the device cavity and microdevice relatively cool. Using this inductive coupling technique, the getter material can be activated after encapsulation, and delicate structures and low temperature wafer bonding mechanisms may be used.

Abstract: The invention is directed to a lamp assembly, and particularly to a method of fixing a first light source and a second light source in a single lamp assembly. More specifically, the invention provides a lamp assembly and a mechanism for fixing at least two light sources therein, at least one of which is a compact fluorescent light source, an incandescent light source, or a halogen light source, and where the fixing mechanism used involves soldering the lead-in wires of the second light source to a printed circuit board of the lamp assembly, which is in operative connection with the lamp ballast.

Abstract: This compact fluorescent lamp includes a discharge tube arrangement with at least one discharge tube formed of glass and enclosing a discharge volume filled with a discharge gas. A ballast circuit is connected to the electrodes disposed at each end of a continuous arc path for controlling the current in the tube. A substantially spherical portion of an outer envelope encloses the tube arrangement and an elongated end portion encloses the ballast circuit. The end portion of the outer envelope is closed and sealed by a seal formed of the same material as the material of the outer envelope. In the associated method of manufacture, the envelope is separated by cutting along a circumferential line into an upper part and a lower part, the ballast circuit introduced into the lower part and respective lead-in wires and the lead-out wires are short and need not be insulated. The ballast circuit and the discharge tube arrangement are held and supported in the outer envelope by the connecting wires and fixing means.

Abstract: A fluorescent lamp includes a discharge tube and an auxiliary amalgam assembly held in the discharge tube by a holder. The holder has first and second regions with attaching portions adapted to receive an associated attachment member. The holder has a first dimension prior to disposition in the discharge tube.

Abstract: Starting performance is improved by efficient UV-light irradiation, suppressing creeping discharge or atmospheric discharge at the outside of a glow discharge tube, and preventing cracks in a pinch seal portion even when an external force is exerted in the direction of bending a lead. In a discharge tube for emitting a UV-light, a light emitting chamber is formed on one side of a pinch seal portion for sealing an electrode assembly, and a lead protrusion port is formed on the opposite side thereof while pinching the seal portion, the lead protrusion port is formed as a sleeve having a predetermined gap relative to the lead, an external electrode disposed to the outside of the light emitting chamber includes a hold formed by bending fabrication of a metal plate.

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 high intensity discharge arc lamp comprises an arc tube, a metal halide in the arc tube, and a coating on the arc tube. The coating comprises a UV absorbent material.

Abstract: An electrodeless or induction ceramic HID lamp includes a ceramic arc body having a generally spheroidal portion enclosing a discharge chamber and an induction coil received around a perimeter portion of the spheroidal portion. At least one leg extends from the spheroidal portion of the arc body. A mounting structure connects the arc body to the surrounding lamp assembly. In one arrangement, a mounting tube is received over at least a portion of the leg, and may further include a light transmissive shroud that also abuts with the induction coil to precisely locate the arc body relative to the coil. In another arrangement, first and second mounting members extend from spaced locations of the arc body, either as pins or legs extending from the spheroidal portion, or radially extending legs from an equatorial portion of the arc body.

Abstract: Disclosed herein is a mercury vapor discharge lamp and methods for making same, where the lamp comprises a phosphor coating layer disposed on at least a portion of the inner surface of the lamp envelope. The phosphor coating layer comprises a phosphor composition comprising a colloidal alumina, particles comprising at least one rare earth compound, and phosphor particles, and the particles comprising at least one rare earth compound are present in the phosphor composition in an amount from about 0.5 percent to about 5 percent of the weight of the phosphor particles. The presence of colloidal alumina, the rare earth compound, and these selected phosphors may contribute to an increase at least one of lumen output or lumen maintenance for the lamp, as compared with the same mercury vapor discharge lamp comprising the same phosphor composition without colloidal alumina and without the particles comprising at least one rare earth compound.

Abstract: A discharge lamp includes an arc tube and a boron oxide film formed on an inner surface of the arc tube.

Abstract: The present disclosure relates to a discharge lamp with improved color point, Dccy and CRI. More specifically, the invention provides a ceramic metal halide (CMH) lamp exhibiting improved color point, Dccy and CRI with little or no loss in other lamp performance parameters. For example, the lamp in accord with at least one embodiment of the invention exhibits excellent lumen output, lamp CCT, and efficacy, in addition to improved color parameters. In one embodiment, the lamp demonstrating these characteristics is a CMH lamp having low levels of indium iodide included in the dose thereof.

Abstract: The present disclosure relates to a lamp part fixing device and method for lamp components made of shape memory alloy. The device includes a main body that carries, for example, a main or auxiliary amalgam, getter, etc. located at a desired position within a discharge tube of a fluorescent lamp. For example, the amalgam can be advantageously located at preselected axial locations and/or within a diffusion path. The main body is configurable between a first configuration and a second configuration. The first configuration allows the mount to move within the discharge tube when the shape memory alloy is below an alloy transition temperature. The second configuration of the main body allows for controlled placement and immobilization of the device within the discharge tube when the shape memory alloy is raised above the alloy transition temperature. The device is shaped in a generally planar or non-planar configuration.

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

Abstract: The present invention relates to a ceramic tube for a high-intensity discharge lamp, comprising a hollow member and a plug member. The hollow member contains a substantially cylindrical body and a closure for closing one end of the body, and the plug member is inserted into an insertion opening formed at the other end of the body. Before the insertion of the plug member, the insertion opening has a tapered portion with a diameter decreasing in the direction from the open end to the inside at least in an area into which the plug member is inserted. After the insertion of the plug member, an outer wall of the plug member is bonded to an inner wall of the insertion opening.

Abstract: A lamp assembly provides both instant light through use of an incandescent/halogen lamp source and an energy saving type light provided by a compact fluorescent lamp source. Both light sources are enclosed within a common envelope or outer bulb. The sensor member monitors light output from a central region of the CFL at a region spaced from the first and second ends in order to obtain an accurate representation of full light output from the CFL before shutting off or terminating power to the incandescent lamp source.

Abstract: A light source unit includes: an arc tube having a light-emitting portion; a secondary reflector covering part of the periphery of the light-emitting portion and being provided with a secondary reflecting surface for reflecting light emitted from the light-emitting portion; a primary reflector having a primary reflecting surface for reflecting the light emitted from the light-emitting portion and the light reflected from the secondary reflector; a first electrode; and a second electrode; wherein the second electrode is arranged at a position which causes an ionic wind to be induced by applying a voltage between the second electrode and the first electrode and causes air between the secondary reflecting surface and the light-emitting portion to flow, and either one of the first electrode or the second electrode is arranged between the arc tube and the secondary reflector.

Abstract: A high pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, wherein at least one electrode is led out of the discharge vessel by means of a metal-containing feed-through, wherein the feed-through is connected to one end of the discharge vessel by way of a ceramic-containing adjustment part, wherein the adjustment part is tubular and consists of individual layers with different compositions, at least two materials A and B forming a plurality of layers of the adjustment part, these materials being chosen such that their coefficient of thermal expansion is between that of the feed-through and that of the end of the discharge vessel or at most is just outside, the layer thickness of each layer being so low that no shearing forces can occur, and the layer thickness of each layer of the same material being different.

Abstract: A compact fluorescent lamp includes a discharge tube such as a spiral discharge tube having a wall forming a discharge chamber between cathodes at first and second ends thereof. At least one auxiliary amalgam assembly is disposed in the discharge chamber at an intermediate region disposed between the first and second ends. The auxiliary amalgam assembly is secured at a location spaced from the inner wall of the discharge chamber.

Abstract: Simple, rapid and low-cost assembly methods of a LED lamp are provided. A standard lamp base having two electrodes and a cavity is soldered with a resistor to the first one of the electrodes, and then filled with a thermally conductive electric insulator in the cavity. A circuit board is attached onto the thermally conductive electric insulator and then soldered to the second electrode and the resistor. An LED device is soldered onto the circuit board such that the LED device and the resistor are serially connected between the electrodes. Preferably, the circuit board has a through hole through which a thermally conductive member is inserted into the thermally conductive electric insulator with its lower end, and the LED device is placed onto the upper end of the thermally conductive member.

Abstract: Disclosed herein are lamps which comprises a discharge vessel comprised of a ceramic material; at least one electrode extending into the discharge vessel; an ionizable fill sealed within the discharge vessel, the fill comprising Hg, a buffer gas component, and a halide component comprising at least an alkali metal halide component and a rare earth halide component; a source of available oxygen; and a metallic component. The discharge vessel defines an interior space which comprises available oxygen during lamp operation conditions. Also disclosed herein are associated methods for making and using such lamps. Disclosed advantages may include mitigating some of the deleterious effects of highly electronegative species, enhanced lumens, and balancing the level of available oxygen for wall cleaning.

Abstract: It is intended to enable accurate positioning of an electrode top end such that the arc length is constant and prevent leakage from sealing portions due to bending or twisting of a molybdenum foil upon sealing an electrode mount by heating the sealing portion. For attaining the object described above, a quartz bulb in which extension tubes each having an inner diameter larger than the inner diameter of the opening of a body tube is welded the openings of both ends of a body tube formed with light emitting portion and a sealing portion thereby forming to a positioning step is used, and electrode mounts each formed with a positioning engagement portion at a position spaced apart by a predetermined length from the electrode top end are inserted to engage the positioning engagement portion of the electrode mounts to the positioning step and, in this state, the sealing portions are sealed.

Abstract: In a mercury-containing arc discharge device for converting electrical energy into resonance radiation energy, the isotopic distribution of the mercury in the device is altered from that of natural mercury so as to reduce imprisonment time of resonance radiation and thereby increase the efficiency of conversion of electrical energy into resonance radiation. The mercury-199 isotope content of the mercury is lower than that in natural mercury and the mercury-201 and/or mercury-204 isotopes are greater than those in natural mercury.

Abstract: A lamp including a plurality of light emitting devices and heat sinks can be configured to dissipate heat generated by the plurality of light emitting devices. The heat sinks can be branched into a generally Y-shaped configuration as viewed in a section that includes a primary optical axis of the vehicle lamp. One of the light emitting devices is connected to one of the branched parts of the heat sinks. Another light emitting device is connected to the other branched part of the heat sinks.

Abstract: A polycrystalline body comprising a MgO/ZrO2-doped aluminum oxide in which alumina grains have an average size of at least 20 ?m and wherein the magnesium oxide is present in an amount of at least 250 ppm and the zirconium oxide is present in an amount of at least about 20 ppm of the weight of the ceramic body, and the magnesium and zirconium oxides are present at a molar ratio of about 1:2 to about 15:1.

Abstract: A method for producing a sealing region, into which an element is fused and which comprises a first sealing region section and a second sealing region section is provided. The method may include applying an encapsulation made of a material onto the element between the production of the first sealing region section and the production of the second sealing region section.

Abstract: To provide a flickerless discharge lamp which can remove hydrogen by a simple and safe means even if the lamp is a large discharge lamp with high pressure when lit, the discharge lamp has a pair of electrodes and a hydrogen getter (4) in the interior of an arc tube, the hydrogen getter (4) being formed of a container (41) made of metal which is hydrogen permeable and a hydrogen absorbent body (42) that is composed of a metal which can absorb hydrogen that is enclosed inside of the container (41) and is fixed to an inside wall of the container (41).

Abstract: An energy-saving lamp with a high-power double spiral energy-saving light tube. The double spiral energy-saving light tube includes two single spiral light tubes having complementary structure. One spiral light tube rotates into the other in the same direction, they geometrically fit into one another, and they complement one another. The two light tubes work independently. Reliability is improved. Short glass tubes can be used for producing the two single spiral light tubes, and the production process is simple and suitable for mass production. The luminous efficiency of the energy-saving lamp of the invention exceeds 80 lm/W. A single spiral light tube of between 14 and 22 mm in diameter corresponds to the power of the lamp of between 100 and 250 W.