Abstract: The invention relates to an electric incandescent lamp, in particular a vehicle headlight, having at least one incandescent filament which is arranged within a light-permeable lamp vessel, the at least one incandescent filament having different pitch factors at its two ends. In order to increase the luminance at the light/dark boundary of the lower beam, that end of the incandescent filament which is near to the base has a lower pitch factor.

Abstract: A vibration resistant, energy efficient lamp (10) that is suitable for, for example, ceiling fan operation where vibration is always a concern. The lamp (10) comprises an envelope (12) of a suitable transparent glass, for example, a borosilicate glass, having a substantially spherical upper body (14) with a given diameter D, a substantially cylindrical waist (16) having a diameter W of about 38% of the given diameter; a neck portion (18) having a diameter N of about 31 to about 32% of the given diameter and a threaded base (20) having a diameter B of about 25 to 27% of the given diameter. The base (20) has a skirt portion (22) adjacent the neck portion having diameter S substantially equal to the neck portion (18) diameter N and larger than the diameter B of the base (20).

Abstract: A halogen lamp is described that is intended in particular for at least one mode of operation at a lamp voltage substantially below the nominal voltage or a lamp power substantially below the nominal power or that is intended for switching between a first such mode of operation and a second, normal mode of operation in which the lamp is operated substantially at its nominal voltage or power. To prevent, in the first mode of operation, any increased mass transport of molybdenum and, as a result of this, possible blackening of the envelope of the lamp or growth of whiskers in the region of the legs of the incandescent filament or of the first turns of the incandescent filament, use is made of a bromine-free filling gas that has chlorine. Lamps of this kind are used for example in the headlights of motor vehicles for what is termed daylight running (DRL=daylight running light).

Abstract: The incandescent lamp, which uses a carbon cycle process, is equipped with a luminous body which, together with a fill, is introduced in a vacuum-tight manner into a bulb, the luminous body including a metal carbide, the melting point of which is above that of tungsten. The distance between the luminous body and the wall of the bulb is less than 18 mm, with a first cycle process, which is attributed to the carbon, being effected by the use of carbon and hydrogen as fill additive, and a second cycle process, which is attributed to the metal, being effected by the use of halogen.

Abstract: A lamp (10) comprising an hermetically sealed, cylindrical envelope (12) arrayed about a longitudinal axis (13); two filament supports (14, 16) sealed in the envelop; a filament (18) fixed between the filaments supports; and an internal reflector (20) in the envelope for directing light emitted from the filament outwardly from the envelope.

Abstract: A halogen incandescent lamp has a transparent sealed bulb, a gas filling comprising an inert gas and a halogen additive, a luminous element which is attached to a current supply system extending in a pinched portion of the bulb, and a mount extending from at least adjacent the outside of the pinched portion into the bulb and comprising at least one metal support wire which retains the luminous element in the vicinity of the end of the bulb remote from the pinched portion. The mount has a non-conducting part such that the outer end of the part of the mount at or near the outside of the pinched portion and the support wire are electrically insulated from each other.

Abstract: A lamp (10) comprising an hermetically sealed, cylindrical envelope (12) arrayed about a longitudinal axis (13); two filament supports (14, 16) sealed in the envelop; a filament (18) fixed between the filaments supports; and an internal reflector (20) in the envelope for directing light emitted from the filament outwardly from the envelope.

Abstract: The bulb (1) of the lamp which defines a longitudinal axis (A) is closed at one end by a seal (3), contact elements being fitted to the one end which are each electrically conductively connected to a power supply line (2) leading to a luminous element, the contact element being accommodated in a tubular part (15) of the seal part, characterized in that the contact element (5) protrudes outwards and is equipped in the interior of the tubular part with at least two outwardly protruding centering parts (10, 11) which are in contact with the tubular extension (16).

Abstract: A light bulb (1), equipped with an illumination body (7), which is enclosed together with a filler (2) in a vacuum in a bulb. The illumination body (7) includes a metal carbide, whose melting point lies above that of tungsten. The bulb also contains carbon, hydrogen and fluorine, preferably in combination.

Abstract: A reflector lamp whose lamp receptacle (1) is provided in part with a reflective coating (6) as well as a reflector contour. The coating is composed of at least two layers of highly heat-resistant metals. One of the layers reflects as well as possible while the superimposed layer absorbs as well as possible.

Abstract: A blue-enriched incandescent lamp having on the interior surface of its light transmissive glass envelope a coating in accordance with an aspect of the invention. The coating contains a phosphor that is energized by the ultraviolet/violet emission (<420 nm) from the hot filament causing it to emit radiation in the range of 420 to 490 nm. In a preferred embodiment of the invention, the coating contains a europium-activated barium magnesium aluminate phosphor and a blue pigment.

Abstract: A filament lamp that allows independent control of the state of luminescence of multiple filaments and that reliably prevents the occurrence of unwanted discharge between adjacent portions of neighboring filaments, even when a high voltage is injected into the filaments to achieve a desired irradiation distribution, and light-irradiation-type heat treatment device that can heat the article to be treated uniformly. The filament lamp has multiple filament assemblies, each having a filament and respective leads arrangement sequentially within a light emitting bulb, in the axial direction of the light emitting bulb. With alternating current power supplied to each filament independently, the current will be supplied with the same phase and mutually adjacent terminals of neighboring filament assemblies will have the same potential, and with direct current power supplied to each filament independently, adjacent terminals of neighboring filament assemblies will be of the same polarity.

Abstract: A light filament (206) formed from carbon nanotubes is characterized by high mechanical strength and durability at elevated temperatures, a high surface area to volume ratio, and high emissivity. Additionally, electrical resistance of the light filament does not increase with increasing temperature as much as electrical resistance of conventional metallic light filaments. Accordingly, power consumption of the light filament is low at incandescent operating temperatures.

Abstract: An energy converter according to the present invention includes a filament 11 for converting given energy into electromagnetic waves and radiating the waves, and a radiation suppressing portion for suppressing some of the electromagnetic waves (e.g., infrared rays), which have been radiated from the filament 11 and of which the wavelengths exceed a predetermined value. The radiation suppressing portion has a bundle 12 of fine wires 12a, of which the axial direction is aligned with a direction in which the electromagnetic waves propagate with their radiations suppressed.

Abstract: The incandescent lamp is equipped with a luminous element which is hermetically inserted in a bulb together with a filling, the luminous element having a metal carbide whose melting point is above that of tungsten. The supply lead is fabricated integrally with the luminous element from a wire and provided with an electrically conducting coating which decisively improves the impact strength and make-proofness.

Abstract: Information handling system peripherals that use a heating element are protected from catastrophic failure due to overheating by a thermal failsafe associated with the heating element that fails the heating element if excessive temperatures are reached. For instance, the failsafe releases the vacuum from a heating element bulb so that the application of power to the filament of the heating element bulb oxidizes the filament resulting in failure of the filament and ceasing of generation of heat. The failsafe includes a melting agent, such as wax or solder, which seals an opening in the bulb unless a thermal runaway temperature is reached in excess of a desired operating temperature. Alternatively, the failsafe includes an expanding agent, such as a ceramic or a liquid-filled bubble, which releases the vacuum by fracturing an opening in the bulb at the thermal runaway temperature. The thermal runaway temperature is selected to induce failure before catastrophic overheating of the peripheral.

Abstract: A high-pressure discharge lamp has a discharge vessel that is enclosed, with an interspace, by an outer bulb. The end of the outer bulb is provided with a lamp cap. The lamp has an ignition circuit including a series connection of a glow starter and an ohmic impedance. The ohmic impedance is formed by a halogen incandescent lamp. The mutual orientation of the glow starter and the ohmic impedance is such that heat produced by the ohmic impedance is at least partly intercepted by the glow starter.

Abstract: A filament assembly for a twinkling bulb has first and second magnesium-plated filaments, a glass bead, a fuse and a tungsten filament. The second magnesium-plated filament is parallel to the first magnesium-plated filament and has a stop section and a flexible metal tongue. The stop section is formed on the second magnesium-plated filament. The flexible metal tongue is mounted on the second magnesium-plated filament above the stop section. When the twinkling bulb is electrified, the flexible metal tongue touches the first magnesium-plated filament intermittently and causes the twinkling bulb to twinkle.

Abstract: An emission device for an ultra-high pressure mercury lamp which maintains an electrode tip shape by which a stable discharge can always be carried out is achieved for a short arc ultra-high pressure mercury lamp with silica glass arc tube containing a pair of opposed electrodes spaced apart a distance of at most 2 mm and in which the arc tube is filled with at least 0.15 mg/mm3 of mercury, a rare gas and a halogen in the range from 1×10?6 ?mole/mm3 to 1×10?2 ?mole/mm3; by providing an operating device which produces a current feed by which the surface of the tip of at least one of the electrodes is shifted into a molten state during lamp operation.

Abstract: A light bulb that is with glass envelope having light transmission of a wavelength only up to 700 nm has an incandescent filament enclosed in a glass envelope that transmits substantially no detectable amount of light of a wave length greater than 700 nanometers.

Abstract: An incandescent bulb filament having a flat Light-emitting surface and high Lamp efficiency and an incandescent bulb using this filament are provided. This incandescent bulb filament is characterized in that it is a filament of ribbon shape placed on one plane, and it includes: spaced portions which are placed side by side with spaces; and connecting portions which connect the spaced portions electrically in series. Each spaced portion has a thickness that is one half the width of the spaced portion or more, and the space between at least one pair of adjacent spaced portions is less than five times the width of the spaced portion.

Abstract: A halogen lamp includes a pair of lead members, a filament bonded to and between the pair of lead members and a glass bulb encasing and sealing the filament and at least portions of the pair of lead members. The lamp further includes a support member made of non-conductive material and adapted for fixedly interconnecting legs of the pair of lead members, with the support member being disposed within the glass bulb. The lead members and the filament are bonded together by plasma welding.

Abstract: A light bulb includes a seat having a first engaging point and a first contact point respectively formed on a bottom face of the seat to correspond to a second engaging point and a second contact point of a light bulb socket. A first end of the first wire engages with the first engaging point of the seat and a second end thereof engages with a first end of a first filament received in the second enclosure. A first end of the second wire engages with the second engaging point of the seat and a second end thereof engages with a first end of a second filament received in the third enclosure. The third wire has a first end engaging with a side wall of the seat and a second end engaging with both second ends of the first and second filaments.

Abstract: A light source with a heatable filament (1) or an electrode, with the filament or the electrode being arranged in a bulb (2) or in a tube, is provided with an improved service life by the provision of a depot (3) with at least one chemical element that is also present in the filament or the electrode, and which is associated with the filament or the electrode such that the element is supplied to the filament or the electrode. Furthermore, a method is described for regenerating a light source with a heatable filament (1) or an electrode, with the filament or the electrode being arranged in a bulb (2) or in a tube. By the method, the depot (3) is associated in a first step to the filament or the electrode, with the depot comprising at least one chemical element that is also present in the filament or the electrode. Finally, the element is supplied to the filament or the electrode.

Abstract: A filament assembly employs one set of primary filament coils (200) disposed in a spiral around one axis of revolution (220) is connected to one set of secondary filament coils (202) by a spacer (205) including at least two coils (205a and 205b) connected to the primary filament coils (200) and the secondary filament coils (202). The coils (205a and 205b) establish at least two attachment points for attachment of the spacer (205) to a hook (207a) of a metal current supply rod (207).

Abstract: Information handling system peripherals that use a heating element are protected from catastrophic failure due to overheating by a thermal failsafe associated with the heating element that fails the heating element if excessive temperatures are reached. For instance, the failsafe releases the vacuum from a heating element bulb so that the application of power to the filament of the heating element bulb oxidizes the filament resulting in failure of the filament and ceasing of generation of heat. The failsafe includes a melting agent, such as wax or solder, which seals an opening in the bulb unless a thermal runaway temperature is reached in excess of a desired operating temperature. Alternatively, the failsafe includes an expanding agent, such as a ceramic or a liquid-filled bubble, which releases the vacuum by fracturing an opening in the bulb at the thermal runaway temperature. The thermal runaway temperature is selected to induce failure before catastrophic overheating of the peripheral.

Abstract: This invention is related to a lamp bulb with optical pattern, which consists of a bulb body, a filament and a conducting wire. The filament in the bulb body was conducted out from the tail of the bulb body by the conducting wire. The head of the bulb body is a solid, the outside is a convey arc and the inside is a triangle. The filament is connected to the conducting wire in a straight line. The bulb of the present invention has a higher luminosity and can use fully the light emitted from the filament. Because of the special structure in the bulb body, the light beam emitted by the bulb forms beautiful patterns. For example, it can form directly eye-shaped or solar eclipse-like aureola halo patterns.

Abstract: A material including a carbon-based substance and resins are mixed, and the mixture is extruded and dried, and the extrusion is sintered in an inert atmosphere, thereby obtaining a heating element material. The heating element material is reheated in a vacuum so that its resistance-temperature characteristic is adjusted to a necessary value, thereby obtaining a heating element for an infrared lamp. The heating element is a wire-shaped or plate-shaped heating element including the carbon-based substance, and an internal lead wire is wound around each of both ends of the heating element directly or via a graphite block so that a tight fit can be obtained. A coil spring is formed in the middle of the internal lead wire. The heating element is accommodated in a quartz glass tube filled with an inert gas.

Abstract: A 3-way halogen light bulb.

Abstract: The invention relates to an incandescent lamp for motor vehicle headlights, having at least one incandescent filament (2) arranged inside the lamp vessel, and a shading device (4). A coil exit (2a) of the incandescent filament (2) is joined to an edge section (41) of the shading device (4) running substantially parallel to the coil axis, in order to ensure an improved suspension of the incandescent filament (2).

Abstract: An incandescent halogen lamp used in connection with a vehicle headlamp system in which stray light attributable to reflection off of internal lamp components is reduced while the structural integrity of the lamp is maintained. The halogen lamp includes two filaments, several lead wires, and a support bridge all sealed within a glass envelope. Each filament is connected at its outermost end to a flattened end portion of a lead wire which extends along the length of the filament from near the support bridge to the upper end of the filament. The flattened outer ends of the lead wires have a narrow profile that is in alignment with the direction of illumination of light from their respective filaments. This arrangement reduces the surface area that could otherwise interfere with light emitted by the filaments, and thereby reduces the overall stray light produced by the lamp. The flattened outer ends can have a roughened surface to further help reduce the amount of light reflected off the lead wires.

Abstract: An improved support is provided for locating a lamp filament axially within a lamp sleeve. The illustrated support is a spiral coil that includes a small diameter center portion that makes contact with the filament. On either side of the filament-contacting portion, the coil opens up to larger diameters for contacting the inner wall of the quartz sleeve within which the filament is housed. The support thus appears H-shaped when viewed from the side. A lamp filament is also provided with expansion compensation sections at either end of a central section. The filament wire in the compensation sections is wound into coils having a greater diameter and also a greater spacing between windings, as compared to coil in the central section. The expansion compensation sections are preferably capable of compressing and thereby absorbing thermal expansion of the filament during operation, without shorting the filament across adjacent windings.

Abstract: A three-dimensional structure in the form of filament (6) for an incandescent lamp comprises a plurality of tungsten microfilaments (6A) having micrometric and/or nanometric dimensions, to form a photonic crystal structure. The microfilaments (6A) are arranged so as to form a series of microcavities in the three-dimensional structure (6), a means having a refraction index different from that of tungsten being present within said microcavities. The described arrangement makes it possible to prevent propagation and spontaneous emission of IR radiation of specific wavelenghts e allows at the same time propagation and spontaneous emission of visible radiation.

Abstract: A 3-way halogen light bulb.

Abstract: An incandescent electric lamp having a tungsten filament embedded in tightly-packed layers of optically transparent, thermally insulating particles of substantially consistent size and shape and surrounded by an optically transparent, infra-red reflective coating, to provide a high efficiency, cool lighting system.

Abstract: The invention relates to an incandescent lamp for a motor vehicle headlight. The secondary filament (2) is arranged in such a way that, in a projection plane that is arranged perpendicular to the reference plane (B), the edge (2a), facing the antidazzle device (4), of the image, projected onto the projection plane, of the second incandescent filament (2) is arranged over the entire length of the second incandescent filament (2) between the reference axis (A) and the antidazzle device (4), and the edge (2a), facing the antidazzle device (4), of the image, projected to the scale 1:1 onto the projection plane, of the second incandescent filament (2) has a prescribed spacing from the reference axis (A). It is thereby possible to produce the light/dark boundary for the lower beam with the aid of the edge (2a) of the secondary filament image (2).

Abstract: A light source composed of a planar, or substantially level, flat or curved, rigid or flexible, matrix of microfilaments integrated on a single substrate and capable of emitting light by incandescence when supplied by an electric current.

Abstract: An end of life quenching device for a vapor lamp preventing damage to the lamp and socket structure. Mica is attached to a lead wire of a filament. As an emission material on the filament is consumed and the vapor lamp reaches the end of its life, the resulting increase in voltage causes an arc. The arc may extend down the lead wire. The hydrated OH group in the mica releases hydrogen, which extinguishes the arc within the vapor lamp. Damage is thereby prevented. The mica withstands the high pressing temperatures required in the manufacture of vapor lamps with quartz envelopes and used to generate ultraviolet radiation in germicidal applications.

Abstract: A light source, in particular incandescent lamp, with a bulb (1), and filament (2) arranged in the bulb (1), and a heating device (3) for the filament (2), the filament (2) emitting both visible light and heat radiation, is designed and constructed with respect to a high conversion efficiency between electric power and visible light output such that the heating device (3) includes a heating element (4) for the indirect heating of the filament (2).

Abstract: A circular filament lamp comprises a filament supported within an envelope which comprises a tube formed as the major part of a circle. The ends of the tube terminate in pinch seals through which extend current carrying assemblies connected to the filament. The pinch seals overlap one another circumferentially of the lamp, and are offset from one another on either side of a plane containing the axis of the filament.

Abstract: Electric lamp assembly comprising a sealed, light-transmitting envelope having a preferably generally spherical or bulbous portion and a press seal, a filament in the interior of the bulbous portion, the filament having a pair of electrical leads sealed within the press seal and extending exteriorly therefrom. The bulbous portion also includes at least one elongated member such as a lead normally present for a second filament of a double filament lamp, preferably two such members, but is devoid of the second filament. The elongated member or members also are sealed in the press-seal, and help provide stability to the assembly.

Abstract: Disclosed is a vehicle lamp that is designed to reliably remove snow, etc. adhering to a lens. A carbon-based heating element is mounted within a lamp body so that the heat rays radiated from the heating element irradiate a rear surface of the lens.

Abstract: The invention relates to a light bulb comprising a base BA to which a filament FIL is connected, which filament is intended to emit a luminous radiation and has turns arranged in spiraling fashion around an axis of revolution AX. According to the invention, the light bulb in addition comprises a plurality of hooks H1, H2, and H3, each being in contact with one of the turns of the filament, and being connected to the base BA by means of a support SUP. The invention enables to keep the filament FIL securely in position, which reduces the risk that several turns of said filament will come into contact with the support SUP, thus creating a destructive short-circuit.

Abstract: An optical interference coating for reflecting infra-red radiation and transmitting visible light. The coating comprises alternating layers of high index of refraction material and low index of refraction material. As the total number of layers increases, the ratio of high index of refraction material to low index of refraction material must also increase.

Abstract: An incandescent lamp comprising a glass bulb (3) of tubular shape in which a filament (4) is axially arranged. The end is hermetically sealed by means of a pinch (5) applied around a metal foil (1) to which an outer current lead (7) and an inner current lead (6) electrically connected to the filament are fixed. A second, intermediate flat foil (2) is connected directly to the end (9) of the filament, between the latter and the inner current lead (6), and the bulb is elbowed at the level of said second flat foil (2).

Abstract: The filament structure comprises a filament with a coiled portion and an uncoiled portion. A tube is disposed on a free end of the uncoiled portion. The tube has two ends and a passage with a central axis extending between the two ends. At least one of the ends comprises an extension which projects positively above a medium plane of the end of the tube. This medium plane is perpendicular to the central axis of the tube. A method for positioning such a tube on the free end of a filament comprises the following steps. The free end of the filament is inserted in a slit between two parallel support surfaces so that the free end is projecting upward. The tube is placed on the free end of the filament so that the extension of the tube projects downward towards the support surfaces and the lower end of the tube abuts at least one of the support surfaces.

Abstract: A halogen incandescent lamp, in particular a miniature halogen incandescent lamp with an electrical power consumption of at most 10 W, that is suitable for use in a pocket lamp. The outside diameter of the lamp bulb is 3.0 mm to 6.2 mm, and the sections (4a, 5a) arranged in the interior (3) of the lamp bulb (1), of the supply leads (4, 5) for the incandescent filament (2) are constructed as flattened wires in order to minimize shading effects.

Abstract: The invention relates to a high-pressure discharge lamp comprising a discharge vessel which is enclosed, with clearance, by an outer bulb. The outer bulb is closed at one end by a lamp cap. The lamp is provided with an ignition circuit including at least a series arrangement of a glow starter and an ohmic impedance. According to the invention, the ohmic impedance is formed by a halogen incandescent lamp.

Abstract: A lamp has a base and a light-transmitting soft-glass lamp envelope sealed to the base to form a sealed lamp cavity which is filled with a non-oxidizing gas. Current supply leads are connected to the stem feedthroughs and extend into the lamp cavity. A halogen incandescent burner is located in the lamp cavity and has a light-transmitting hard-glass burner envelope which encloses a sealed burner cavity filled with an inert gas containing halogen. The burner envelope has presses at its ends. A tungsten filament coil in the burner has extended legs at its ends that extend out of the burner cavity into the lamp cavity through the burner presses and are connected to the current supply leads in the lamp cavity to act as fuses which open upon breach of the lamp envelope, thus preventing further burner operations.

Abstract: A new type of light includes a casing used for containing an emitting device. Further, the emitting device includes a couple of wires, an insulator ball, a filament and a fuse. The couple of wires are connected with a power supply via the casing, wherein the contact points of wires and casing are defined as the bottom of the light. Moreover, the insulator is posited above the bottom of light. Subsequently, the filament is posited above the insulator ball, and the fuse is posited on the top of wires. Particularly, the tops of wires are wound to form hooks to hold the fuse. The hooks are flattened for increasing the adhesion of connection between wires and fuse.