Abstract: The invention relates to an electric lamp, more particularly to a lamp for motor vehicle, the cap of which is provided with a metal support sleeve (53) constructed in the shape of a ring and at least one pressure spring (1) for securing the lamp in the lampholder. The at least one pressure spring (1) is constructed as a cambered leaf spring whose ends (11, 12) bear against the inner wall of the support sleeve and which has a V-shaped region (100) which reaches through a cutout (53b) in the support sleeve (53).

Abstract: A lamp capsule includes a lamp envelope having a tubular portion and a dome closing one end of the tubular portion, a light source mounted in the lamp envelope on or near its central axis for emitting light when energized by electrical energy and a light attenuating coating over the dome. The dome has a shape that traps light emitted by the light source in the direction of the dome. The dome may be shaped such that a dome angle between a tangent to the interior surface of the dome and the central axis of the lamp envelope is 45.degree. or less. The dome may be shaped as a hyperbolic surface of revolution. The lamp capsule is typically used in a vehicle headlamp and provides low glare.

Abstract: A lamp with a faceted spiral reflector and a spiral faceted lens is disclosed. The lamp with spiral reflector and spiral lens yields a smooth circular beam pattern with a perceived sharp beam edge. The source image is well dispersed, and the beam illumination is visually smooth.

Abstract: A first lamp base assembly is provided which includes two separate base components. The first base component is attachable to a lamp via a lamp retainer and to the second base component along a planar surface. The second base component included a number of drive pins embedded in a plastic base. The pin heads define a locating surface that a planar surface of the first component unit may be adjusted across and welded to. The drive pins are inexpensive, and once they are mutually welded to the first component, they cannot unthread from the first component. A lamp including the foregoing lamp base assembly is also provided.

Abstract: An electric lamp with an enclosed lamp capsule has reduced production manufacturing losses when manufactured with a split eyelet used to duct a lead through the lamp housing. The elongated tube portion of the eyelet has either thinned wall sections or splits formed along the tube axis. When the rivet is set, the tube wall distorts or gives way along the weakened axially lines. The housing glass is then not fractured during riveting, and after riveting the thermal expansion and contraction of the glass with respect to the rivet results in decreased pressure on the glass. The lamp with a split eyelet yields a higher percentage of lamps surviving the manufacturing process, and having fewer cracks or other rivet induced defects in final products.

Abstract: A vehicle lamp with ram air vent having lamp housing, light source, ram air tube, and a second vent tube is disclosed. The vehicle lamp with ram air vent yields an air cooled lamp interior without acquiring excess water.

Abstract: A reflector lamp may be made with a reflector and base holding a hermeticy sealed bulb. The bulb encloses a filling and a light source, the light source being a high voltage or medium voltage light source in which an operating voltage of at least 80 volts is present. The reflector consists of a basic body with a reflector contour and a neck part attached to a rear portion of the basic body, and a base which is joined to the neck part and which has at least two metallic contact pins with cylindrical seals on an end farthest from the bulb. A current feeder system makes an electrical lead available for use by the light source. The base is formed completely from the same material as the neck part and as an integral part directly on the neck part of the reflector.

Abstract: The invention relates to an ignition apparatus for a discharge lamp, in picular high-pressure discharge lamp for motor vehicle headlights. The ignition apparatus, which is preferably designed as a pulse ignition device, is accommodated in the lamp base. According to the invention, it has; a plate (1), which is composed of an electrically conductive material, is matched to the geometry of the base and on which at least the ignition capacitor (C1) and the spark gap (F1) are fastened, at least one first electrical connection of the ignition capacitor (C1) and at least one first electrical connection of the spark gap (F1) being electrically conductively connected to the plate (1).

Abstract: A magnetic field controller has been developed, which allows magnetic deflection of the arc of an alternating current high intensity discharge (HID) lamp. The controller consists of a driving circuit and an electromagnet. The system delivers a fast switching magnetic field, which can follow the alternating current signal of an alternating current HID ballast. The method minimizes the electromagnet's inductance and uses fast reacting ferromagnetic materials (Ni--Zn ferrite). To achieve the required magnetic field, a current amplifier was developed to pick up the signal from the alternating current ballast and drive the electromagnet with up to two amperes. The alternating magnetically deflected HID lamp system allows the use of magnetic deflection for alternating current HID lamps. A vehicle headlamp system can achieve multiple beam functions (day light running, low beam and high beam) of a headlight system with only one alternating current lamp.

Abstract: A neon lamp providing white light is disclosed. The lamp is operated to stimulate the neon to emit both ultraviolet light, and visible red light. A phosphor coating responsive to the ultraviolet light produces a complementary green blue light that in combination with the neon red light yields a white light. The lamp is small, efficient, and not subject to the effects of cold that cause mercury based fluorescent lamps to operate poor in cold conditions typical of out of door operation.

Abstract: The invention concerns an electric lamp, particularly a high-pressure disrge lamp or halogen bulb with a base on one side for a motor-vehicle headlight. The base of the lamp of the invention has a base sleeve (110) comprised of an electrically insulating material and a mounting element (111) also comprised of an electrically insulating material, which bears lamp bulb (116) and which is joined with base sleeve (110). According to the invention, a metal part (121) is anchored in mounting element (111) and a metal ring (122) is anchored in base sleeve (110), whereby metal ring (122) is equipped with several shaped spring-type weld lugs (122), which are welded with metal part (121) anchored in mounting element (111).

Abstract: The vehicle headlamp uses a light shield with a interior surface with a rough, black ceramic coating. The ceramic surface absorbs almost all the visible light shone on it. The surface is highly resistant to the heat generated by the light absorption, and the roughness breaks up visible light images in any small amount of reflected light. The ceramic material does not outgas or deteriorate so as to leave a film on the other lamp elements.

Abstract: An electric lamp may be formed with a lamp bulb, with lead wires leading out from the lamp bulb and with a base which incorporates a connection region made of electrically insulating material and provided with electrical connections. The connection region includes a cavity into which at least one lead wire of the electric lamp projects, and at least one electric connection of the base is formed by a contact lug which projects into the cavity in an electrically conducting manner with a lead wire of the lamp. A shaped part consisting of heat-resistant, elastic material is located in the cavity of the connection region. The shaped part has one or more passages for each lead wire of the electric lamp. The shaped part sits on a contact lug and abuts the wall delimiting the cavity in a press fit, and the lead wires pass through the shaped part.

Abstract: The efficiency of a horizontally operated arc discharge lamp has been found to be substantially improved by the application of a transverse magnetic field. The magnetic field moves the arc downward, away from the upper wall of the lamp envelope. The magnetic field moves the arc so that the outer mantel that otherwise would make contact with side walls of the envelope stand away from the envelope wall. With the arc withdrawn from the wall, less energy is lost in heating the envelope, resulting in more energy be directed to the emission of light.

Abstract: A reflector is provided which surrounds a light source that has emissions in both the visible and radio frequency ranges. The electrically conductive reflecting coating of the reflector is connected to the system electrical ground so that the radio frequency component is effectively shielded by the reflector. The visible component of the spectrum emitted by the source escapes the reflector cavity after at least one reflection from the reflector surface and forms the required beam pattern.

Abstract: The invention relates to a method for producing an electric incandescent p which has at least one incandescent filament (31) and an anti-dazzle device (20). According to the invention, in the course of the method, an end (31a) of an incandescent filament (31) is threaded into a notch (23) on the edge of the anti-dazzle device (20) and fused with the anti-dazzle device (20) by melting the material of the anti-dazzle device (20) in the region of the notch (23) so that the melt wets the incandescent filament end (31a) arranged in the notch (23) and the incandescent filament end (31a) is embedded in the solidified material (20a) of the anti-dazzle device (20) after the melt has solidified.

Abstract: A press seal-type lamp is provided in the form of a bulb portion and a press seal extending therefrom. The bulb portion contains at least one filament from which extends a first lead wire and a second lead wire. The first and second lead wires are sealed within and extend from the press seal. A length of each lead wire is folded over the press seal and caused to extend into a respective groove formed in the press seal.

Abstract: A discharge lamp may be formed with both galvanic and dielectric electrod The relative discharges due to the currents between the differing electrodes may be adjusted to effect the optical spectrum of the radiation emitted by the lamp.

Abstract: The invention relates to an electric lamp based without cement, for instation in a reflector which is provided with an opening (17a) and made in the reflector wall (17). The lamp has a metal/plastic base which has a metal holder part (12) in which the bulb (10) of the lamp is fixed, a metal support sleeve (13) which is connected to the metal holder part (12), and a plastic base part (14) which is provided with the electrical connections (15) of the lamp and in which the support sleeve (13) is anchored. The lamp base has a plurality of reference lugs (14a), lying in a plane, which are used for holding and for correct installation of the lamp in the reflector. According to the invention, the plastic reference lugs (14a) are covered by metal cover tabs (13b) so that reference lugs (14a) are screened against the electromagnetic radiation generated by the lamp, or alternatively the reference lugs (43b) are made of metal.

Abstract: A multilayered lens for a lamp, e.g., an automotive lamp. The lens includes a transparent, unitary, polymeric lens blank having an inner surface and an outer surface; a thin, translucent, color layer disposed on, conforming to, and bonded to the inner or outer lens blank surface; and a thin, transparent, protective coating disposed on and over-lying the color layer. The color layer includes a thermoplastic polymer film of at least one color. Optionally, the film may be patterned to include two or more colored regions and/or indicia. Also disclosed are a lamp assembly, e.g., an automotive lamp assembly including the multilayered lens and methods for fabricating the multilayered lens and the lamp assembly by heat transfer of the color layer to the lens blank from a heat transfer carrier film.