Abstract: To provide a method of manufacturing a display device having an excellent impact resistance property with high yield, in particular, a method using a plastic substrate. The method of manufacturing a display device includes metal film, an oxide film, and an optical filter on a first substrate; separating layers including the optical filter from the first substrate; attaching layers including the optical filter to a second substrate; forming a layer including a pixel on a surface of a third substrate; attaching the layer including the pixel to a fourth substrate; and attaching layers including the optical filter to another surface of the third substrate.

Abstract: Metal halide lamp with ceramic discharge vessel (4), the discharge vessel having two ends (6) which are closed off by stoppers, and an electrically conductive leadthrough (9) being passed through this stopper (12), an electrode (15) having a shank (16), which projects into the interior of the discharge vessel, being secured to the leadthrough. The leadthrough is composed of two portions of different diameters, with the outer portion resting on the end face of the stopper.

Abstract: A ceramic discharge vessel has a hollow body with at least one receptor. A molybdenum tube is shrink-fit in the receptor, preferably in the form of capillaries. The shrink fit provides a hermetic seal without the use of glass frits or other additional sealing materials. An electrode having a rod portion is inserted into the molybdenum tube. The rod portion of the electrode is welded to the tube at a remote end of the tube. The inner diameter of the molybdenum tube is no more than 0.02 mm greater than the outer diameter of the rod portion of the electrode so that a gap of 0.01 mm or less is formed between the rod portion and the tube to inhibit pooling of the discharge medium, e.g., a metal halide fill, in the gap.

Abstract: A fabrication method for discharge lamps is disclosed, which comprises providing a glass tube of diameter between 2 and 20 mm, the glass tube having an inner wall coated with a fluorescent phosphor and having a through-passage with a first end and a second end, connecting a first dielectric electrode to the first end of the glass tube by applying an adhesive to a contacted portion of the glass tube and the first dielectric electrode, and sintering the contacted portion of the glass tube and the first dielectric electrode to securely connect the glass tube and the first dielectric electrode. Subsequently, processes of filling and sealing are conducted to complete the fabrication of the discharge lamps.

Abstract: A conductive composition and applications thereof are provided. The conductive composition comprises a mixture consisting of a metal powder and a glass powder. The diameter of the metal powder ranges from about 1 ?m to about 3 ?m. The diameter of glass powder ranges from about 0.5 ?m to about 1 ?m. The weight percentage of the metal powder to the mixture is from about 60% to about 98%. The conductive composition could be used to manufacture the electrodes of a flat lamp.

Abstract: A lamp includes a reflector including a reflective portion, a heel, and a nose, wherein the nose includes an opening. A light source is disposed in the reflector. A pair of leads connects to the light source. An eyelet protrudes through the opening in the nose and receives one of the leads. A positioning member is disposed in the heel portion of the reflector. The positioning member includes an opening to receive the light source.

Abstract: A light emitting tube array is provided which includes: front and rear plates; and a plurality of elongated light emitting tubes each filled with a discharge gas and disposed parallel to each other between the front and rear plates, the front plate being transparent and having an enough rigidity to support the light emitting tubes, the front plate including at least one pair of display electrodes provided thereon in contact with the light emitting tubes as extending perpendicularly to the light emitting tube, the rear plate having an enough flexibility to adapt to variation in sectional dimensions of the light emitting tubes, the rear plate including address electrodes provided thereon in contact with the respective light emitting tubes as extending longitudinally of the light emitting tubes.

Abstract: A method of manufacturing a fluorescent light bulb includes the steps of: (a) providing a lighting base which has a plurality of electrical terminals formed thereon; (b) bending an elongated fluorescent tube to form a lower vertical-extending portion and an upper curving portion outwardly and radially extended from the vertical-extending portion; (c) communicatively linking every two of the fluorescent tubes to form a plurality of fluorescent elements, wherein a light passageway is formed between the two curving portions of the fluorescent tubes of each of the fluorescent elements; (d) mounting the fluorescent elements at the lighting base; and (e) electrically coupling the fluorescent elements with the lighting base, so as to allow the fluorescent light from the opposed fluorescent element to pass through the light passageway so as to enhance a brightness and efficiency of the fluorescent elements.

Abstract: Fluorescent lamp (1) comprising a glass discharge vessel (2) in which a gas is present, which discharge vessel (2) is on two sides provided with a tubular end portion (3) having a longitudinal axis, which end portion (3) includes a glass stem (5), wherein an exhaust tube (6) extends axially outwardly from said stem (5) for supplying and/or discharging gases during the production of the lamp (1), wherein an electrode (8) extends axially inwardly through the stem (5) for generating and maintaining a discharge in the discharge vessel (2), said electrode (8) comprises two pole wires (9) held in position by the stem (5) and connected to plug pins (11) of an end cap (13) fixed to said end portion (3), characterized in that said end cap (13) is at least substantially made of a shrink material.

Abstract: The present invention provides a flat discharge lamp and the production method thereof. The flat discharge lamp comprises an upper substrate, a lower substrate and a discharge chamber disposed between the upper substrate and the lower substrate, wherein the discharge chamber is filled with an inert gas, and a plurality of first electrodes and second electrodes are arranged with one another disposed on the discharge chamber. Besides, each of the first electrodes and second electrodes is connected with one end and another end of an alternating power supply, respectively. The invention is characterized in that the discharge chamber is provided with fluorescent film coated on its interior surface and a plurality of third electrodes each disposed between the first electrode and the second electrode. Besides, all the third electrodes are connected to a common plane, or each of which is connected to the common plane, respectively.

Abstract: A lamp (100) comprises an outer envelope (120) having first and second electrical lead-ins (140, 160) sealed into a base (180) of the envelope (120). A ceramic arc tube (200) is operatively mounted within the envelope (120), the arc tube (200) having at least one electrode (220) therein. A tubular, niobium feed-through (240) is connected to the at least one electrode (220) and sealed to the ceramic body (120) at a joint (260) that can comprise a glass frit (260a). A stainless steel rod (280) is electrically connected between the electrical lead-in (140) and the tubular niobium feed-through (240), the stainless steel rod (280) being the only electrical connection between the lead-in (140) and the niobium feed-through (240).

Abstract: An electrode system with a current feedthrough through a ceramic discharge vessel is provided which, on one hand, increases the visible output of lamps and, on the other hand, allows smaller dimensions. For this purpose, the current feedthrough is made of rhenium or a platinum-group metal. In this way, improved color reproduction is also achievable. In preferred embodiments: (a) the current feedthrough is made of rhenium or a rhenium alloy or a platinum-group metal or a platinum-group metal alloy and the current feedthrough is brazed flush in the discharge vessel, (b) the discharge vessel has no shaft, and/or (3) the current feedthrough is in the form of one or more joined spheres.

Abstract: The invention relates to methods of manufacturing gas-discharge electron lamps, and neon tubes in particular. According to the invention, it is proposed, prior to carrying out vacuum treatment of the internal space of an electron lamp (1), to mount at least one of said glass capsules (2) in exhaust tube (5), in close proximity to an exposed electrode in such manner that the opening provided in metal container (4) is facing the working area of the lamp (1).

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

Abstract: A high intensity discharge lamp, in certain embodiments, includes a uniquely shaped shoulder and dimensions selected to reduce stress and associated cracking. The uniquely shaped shoulder has a variable diameter, such as, e.g., a cup-shaped geometry, a curved funnel-shaped geometry, or a conical-shaped geometry. The selected or optimized dimensions may include a tip-to-neck distance, a tip-to-wall distance, and an internal diameter of the lamp. The selected or optimized dimensions also may include a uniform wall thickness, an arc gap distance, and an electrode thickness. These dimensions and shapes are selected to reduce undesirably high maximum stresses and temperatures in the lamp. As a result, the lamp is able to provide higher performance with a longer life due to a decreased risk of stress cracking during rapid start up and steady state operation.

Abstract: A flat luminescent lamp includes first and second substrates attached to each other at a plurality of adhesive portions, a plurality of discharge spaces in regions other than the plurality of adhesive portions between the first and second substrates, first and second electrodes arranged in the discharge spaces to be separated from each other, first and second phosphor layers formed in the discharge spaces, and first and second frames sealing the first and second substrates.

Abstract: A cement for bonding an arc tube body made of an aluminum nitride sintered body and an electrode support made of molybdenum achieves high gas tightness in the obtainable arc tube without impairing the excellent translucency of the aluminum nitride sintered body. The cement contains a molybdenum powder and an aluminum nitride powder, and the total amount of metalloid elements, rare-earth elements and metal elements (except the rare-earth elements and aluminum element) corresponding to the following conditions (1) and (2) is 300 ppm or less: (1) metal elements having a melting point of 2000° C. or lower, and (2) metal elements having an ion radius smaller than that of aluminum.

Abstract: The present invention provides a flat fluorescent lamp. The flat fluorescent lamp comprises a single plate. Consequently, the flat fluorescent lamp is structurally safe, brightness of the flat fluorescent lamp is high, and efficiency of the flat fluorescent lamp is also high without the provision of other additional optical components. The present invention also provides a method of manufacturing such a flat fluorescent lamp.

Abstract: A composition for a dielectric of a plasma display panel laminating a plurality of layers, includes: a lower layer composition containing inorganic powder and a binder resin, an upper layer composition containing inorganic powder, a binder resin, a photopolymerizable monomer and a photopolymerization initiator, the upper layer composition being provided above the lower layer, and an intermediate layer composition containing a thermally decomposable resin, the intermediate layer composition being provided between the lower layer and the upper layer.

Abstract: A lamp includes a discharge vessel. Tungsten electrodes extend into the discharge vessel. An ionizable fill is sealed within the vessel. The fill includes a buffer gas, optionally free mercury, a halide component which includes a rare earth halide selected from the group consisting of lanthanum halides, praseodymium halides, neodymium halides, samarium halides, cerium halides, and combinations thereof, a source of available halogen. The discharge vessel optionally includes a source of available oxygen. The source of available halogen and optional source of available oxygen are present in an amount such that the vapor phase solubility of tungsten species in the fill during lamp operation is lower adjacent at least a portion of one of the electrodes than at a wall of the discharge vessel, such that tungsten deposited on the wall during lamp operation is transported back to the electrode.

Abstract: A lamp includes a discharge vessel. Tungsten electrodes extend into the discharge vessel. An ionizable fill is sealed within the vessel. The fill includes a buffer gas, optionally free mercury, a halide component which includes a rare earth halide selected from the group consisting of lanthanum halides, praseodymium halides, neodymium halides, samarium halides, cerium halides, and combinations thereof. A source of available oxygen is present in the discharge vessel. The rare earth halide is present in an amount such that, during lamp operation, in combination with the source of available oxygen, it maintains a difference in vapor phase solubility for tungsten species between a wall of the discharge vessel and at least a portion of at least one of the electrodes.

Abstract: In a discharge tube, a conductive ferrule is provided on an end portion of a glass tube. The ferrule includes a body that is to be mounted to the outer circumference of the glass tube and has a contact portion to be electrically conductively fixed to a relay connector (or a bearing device). Further included is a conductive portion that extends from the body so as to have elastic contact with an outer lead. The outer lead will not be under load due to the weight of the discharge tube, but the conductive portion solely has elastic contact therewith. Thus, stress concentration on the outer lead can be prevented.

Abstract: A fluorescent lamp is configured so that a glass bulb has a phosphor film formed on its internal face, and a rare gas and an amalgam pellet are enclosed therein. The amalgam pellet contains zinc, tin, and mercury as principal components, one amalgam pellet is enclosed in the glass bulb, and the amalgam pellet has a weight of not more than 20 mg. The fluorescent lamp satisfies the relationship expressed as: 45×(1?A)?x?55×(1?A), 75A?y?85A, 45?30A?z?55?30A, and x+y+z?100, where x represents a content of zinc contained in the amalgam pellet in percent by weight, y represents a content of tin therein in percent by weight, and z represents a content of mercury therein in percent by weight. This configuration allows the fluorescent lamp to be characterized in that an amount of released mercury that is necessary for the first lighting of the fluorescent lamp is secured, and that the phosphor film is less prone to being peeled due to the amalgam.

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

Abstract: A method of manufacturing a gas discharge tube by closing an opening of a glass tube by forming a glass layer with outer peripheral shape identical to the outer peripheral shape of the glass tube on an end face of the glass tube. An open end face (opening) of the glass tube is pressure-welded to a dry film containing a low melting point glass powder and a binder resin, and then the glass tube is lifted up to transfer the dry film for closing the opening to the end face of the glass tube. A phosphor support member is inserted into the glass tube from a side opposite to the end face and then an end of the phosphor support member is caused to adhere to the dry film. The binder resin is burnt off, and the dry film is vitrified to produce a low melting point glass layer.

Abstract: A reflector lamp has a generally parabolic shaped housing (12) with an interior surface coated with a layer (14) of silver having a protective layer (16) of a stable protective material, such as silica, disposed thereon. The thickness of the protective layer is selected such that at least one of the following relationships is satisfied: a color correction temperature of the lamp is no less than about 60 K below that of the light source, and a % reflectance of the reflective interior surface is no less than about 3% below that of an equivalent reflective interior surface without the protective layer.

Abstract: A fluorescent lamp includes a light-transmissive envelope, means for providing a discharge, a gas fill comprising mercury vapor and an inert gas sealed inside the envelope, a barrier layer on the inner surface of the envelope and a phosphor layer on the barrier layer. The phosphor layer contains at least one phosphor and alpha alumina and has a coating weight from about 1 to about 5 mg/cm2.

Abstract: Aluminum nitride arc discharge vessels having a high total transmittance may be made by annealing the as-sintered AlN vessel in a nitrogen atmosphere, preferably at a temperature of at least about 1850° C. and for a time of at least about 50 hours. The annealing increases the total transmittance of the vessel to greater than 92% in the wavelength region from about 400 nm to about 700 nm. The annealed AlN discharge vessels are useful for lamp applications, such as metal halide lamps, and offer an improved durability and life over polycrystalline alumina (PCA).

Abstract: A method of manufacturing an electric lamp. An undercoat of getter precursor is applied to the lamp envelope. A layer of luminescent material is applied to the undercoat. The undercoat and layer of luminescent material are sintered to convert the getter precursor into gettering material. The luminous efficacy of the lamp is increased.

Abstract: A method for sealing a fluorescent lamp performs a first heating operation to heat a region of a glass tube in which a fluorescent material is coated, stretches the glass tube at the heated region, and performs a second heating operation to heat the stretched region of the glass tube.

Abstract: The invention relates to a metal halide lamp comprising a ceramic discharge vessel (21), characterized in that a molybdenum leadthrough (11) is connected to a cermet stopper (15) via an intermetal interface gradient (20).

Abstract: A switchable compact fluorescent lamp with an L.E.D. added to the center of the top of the compact fluorescent lamp plastic electronic encasement housing. The L.E.D. can be switched on with the fluorescent on or switched to be on by itself with the fluorescent off. The lamp can also be switched to a battery and or capacitor power backup for the L.E.D. when the power goes off.

Abstract: The invention describes a light burner (1) comprising a discharge chamber (2) containing a gas sealed in the discharge chamber (2) by a seal (4, 5) and a pair of electrode shafts (6, 7), each of which partially intrudes from the seal (4, 5) into the discharge chamber (2) whereby a wrapping (8, 9), at least partially contained in the seal (4, 5), is freely wound around at least one of the electrode shafts (6, 7) and constrained in its motion by a number of containment elements (P1, P2, P3, P4) positioned along the longitudinal axis of the electrode shaft (6, 7).

Abstract: A high pressure sodium discharge lamp includes an arc tube which encloses a discharge sustaining fill which comprises sodium. Electrodes extend into the fill for generating an arc discharge in the fill during operation of the lamp. At least one of the electrodes includes a coiled coil which supports an emitter material thereon.

Abstract: A compact fluorescent lamp comprises a discharge tube arrangement with at least one discharge tube. The tube is formed of glass, encloses a discharge volume filled with a discharge gas and has a fluorescent phosphor coating disposed on the inner surface of the tube. The tube forms a continuous arc path and has electrodes disposed at each end of the arc path. The lamp also comprises a ballast circuit connected to the electrodes by lead-in wires and to a supply voltage by lead-out wires for controlling the current in the tube. A bulb shaped outer envelope comprises a substantially spherical portion, which encloses the tube arrangement and an elongated end portion, which encloses the ballast circuit. The end portion of the outer envelope has a neck portion with an open end on a base side for receiving a base shell.

Abstract: A high-pressure mercury vapor discharge lamp (1) comprising an envelope (2) of high temperature resistant material having a discharge vessel (3) and two electrodes (5, 6) extending from two seal portions (4) into the discharge vessel (3), the two electrodes having an electrode gap (de) smaller than or equal to 2.5 mm, preferably smaller than or equal to 1.5 mm, is described. The discharge vessel (3) contains a filling which essentially comprises the following substances: rare gas, oxygen, halogen consisting of chlorine, bromine, iodine, or a mixture thereof, as well as mercury in a quantity greater than or equal to 0.15 mg/mm3? The seal portions (4) have a cross-sectional area of between 6 mm2 and 20 mm2, preferably approximately 10 mm2. A method of manufacturing such a high-pressure mercury vapor discharge lamp (1) and a projector system for such a high-pressure mercury vapor discharge lamp (1) are also described.

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: A method of manufacturing a flash-free lamp base (10), wherein the lamp base (10) comprises a shell (14), an eyelet (16) and a glass, electrically insulating part (18) therebetween and joining the shell (14) and the eyelet (16), the shell and the eyelet being electrically conductive, the shell (14) having a tubular portion (14a) with an open end (14b) and a partially closed end (14c) defining a volume (14d) therebetween, the partially closed end (14c) including a tapered area (14e) terminating in a reentrant section (14f) that extends into the volume (14d) and defines an inner annulus (14g).

Abstract: A fluorescent lamp including a curved glass bulb that has a layer including a phosphor layer on an inner surface, mercury and a rare gas enclosed inside, and a pair of electrodes at both ends, and when a tube inner diameter (mm) of the glass bulb is plotted on a horizontal axis of an orthogonal coordinate system and a total amount of CO2 and CO (mol %) contained in gas present inside the glass bulb is plotted on a vertical axis of the orthogonal coordinate system, the tube inner diameter and the total amount of CO2 and CO are in a predetermined area or on a boundary thereof, the predetermined area being bounded by line segments AB, BC, CD, and DA that connect a point A (1.5 mm, 0.008 mol %), a point B (4.0 mm, 0.0005 mol %), a point C (4.0 mm, 0 mol %), and a point D (1.5 mm, 0 mol %) in the stated order. As a result, a fluorescent lamp that has no illumination failure caused by snaking can be obtained even though the fluorescent lamp is in a curved shape.

Abstract: A fluorescent lamp assembly includes a fixture which supports at least one fluorescent lamp. A ballast is mounted to the fixture for controlling a supply of electrical current to the fluorescent lamp. A thermal transfer material is interposed between the ballast and a portion of the fixture whereby heat is transferred between the ballast and the fixture.

Abstract: A bulb-shaped outer envelope for accommodating at least one lamp including a light-emitting body and a control gear is disclosed. The envelope has a substantially spherical section for receiving the light-emitting body, and an elongated end section for receiving at least a part of the control gear components. The elongated end section is provided with a neck section. A substantially tubular neck-extension portion connects to an inner surface portion of and protruding from the neck section. The neck-extension portion is suitable for accommodating a remaining part of the control gear components. In a method for the manufacture of a glass outer envelope, a flare that is normally used in the manufacture of incandescent lamps is turned around by 180°, put into a skirted bulbous envelope, melted into the envelope while the skirt is detached and the flare is formed into a neck-extension portion. A self-ballasted compact fluorescent lamp with the bulb-shaped outer envelope is also disclosed.

Abstract: A method and apparatus for producing a lamp in the case of which a lamp bulb closed at one end is filled through a feed opening for a luminous means are disclosed together with a lamp produced using this method. A dome of the lamp bulb can thereby be of smooth design without a pumping tip.

Abstract: A method for manufacturing a discharge lamp comprising at least two tubes or bulbs is disclosed.

Abstract: In an arc tube for discharge lamp, an electrode assembly is formed by integrally joining an electrode rod, a molybdenum foil, and a molybdenum lead wire. The electrode assembly is sealed into pinch seal portions located at both ends of a glass tube. The electrode assembly, before being pinch-sealed into the pinch seal portions, receives vacuum heat treatment at 200 to 800° C. Hereby, the water content of the assembly is adjusted to 10 ppm or less, and desirably to 3 ppm less and an oxide film attached to the surface of the electrode assembly is removed. Therefore, the quantity of impurity (water or gas) enclosed in the closed glass bulb is very small, so that it is possible to provide an arc tube in which the flicker is not produced, luminous flux of 3000 lm or more is obtained, and starting voltage can be lowered to about 15 kV.

Abstract: A hermetically sealed lamp having at least one end-to-end seal. The end-to-end seal may be a material diffusion bond, a seal-material bond, or any other suitable bond. For example, the hermetically sealed lamp may have one or more endcaps butt-sealed to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are butt-sealed to the endcap and/or arc envelope. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.

Abstract: A lighting unit (10) including a reflector region (130) coupled to a neck region (140) coupled to a base region (150) is described. These regions (130, 140, 150) define an inner region (160) for inclusion of a lamp (300), in that the reflector region (130) can be operated to reflect radiation generated by the lamp (300), the neck region (140) is disposed at least partially to surround the lamp (300), and the base region (150) is disposed to convey electrical connections to the lamp (300). The unit (10) further includes a heat-conducting arrangement of elements (500, 510) to conduct, in operation, heat energy generated by the lamp (300) substantially to the neck region (140) for subsequent dissipation therefrom.

Abstract: A low-mercury-consuming fluorescent lamp (1) contains a fine particle size alpha alumina in the phosphor-containing layer (16) on the inner surface (15) of the lamp envelope (3). The lamp envelope (3) may have one or more bends (22), in which case the phosphor-containing layer (16) additionally contains an adhesive, such as a borate adhesive, to enhance adhesion, especially in the bend areas. The phosphor-containing layer (16) may be formed from a water-based coating suspension to which the fine particle alpha alumina is added after its pre-dispersion in deionized water.

Abstract: The invention relates to a low-pressure mercury discharge lamp comprising an envelope with an inner surface enclosing a discharge space in which a mercury comprising filling is accommodated, at least one electrode for generating ultraviolet radiation in said discharge space, and a phosphor layer formed over said inner surface to convert said ultraviolet radiation into light of the green wavelength region, wherein said phosphor layer consists of a water-dispersable blend of a yellow-green phosphor and a blue-green phosphor. The blend consists preferably of the CBT and BAM-green phosphors.

Abstract: An organic EL device includes a thin film transistor (TFT) array substrate including a first insulating substrate, a TFT formed on the first insulating substrate and a capacitor; and an organic EL substrate including a second insulating substrate, and a transparent electrode, an organic EL layer and a metal electrode, which are sequentially stacked on the second insulating substrate; wherein the TFT is electrically connected to the metal electrode.

Abstract: A lamp assembly includes a reflector body having an integral crimping portion that extends inwardly over a channel formed in the reflector body, a seal feature arranged within the channel, a cathode assembly having an edge feature extending into the channel, and a resilient member held in a state of compression between the crimping portion and a first surface of the edge feature such that an opposing second surface of the edge member is held against the sealing feature thereby creating a hermetic seal between the cathode assembly and the reflector body wherein the crimping portion is configured to remain in contact with the resilient member if the hermetic seal becomes non-hermetic.