Abstract: A lamp arrangement is disclosed, with at least one low-pressure discharge lamp, in particular, a compact fluorescent lamp to generate a main illumination with at least one discharge bulb, fitted in a socket and at least one alternative light source, in particular, a light diode arrangement with at least one light diode (LED) for generation of an alternative illumination. According to the invention, the light diode arrangement is at least partly arranged in the vicinity of cold spots on the low pressure discharge lamp.

Abstract: The invention relates to a lamp ring for a lamp, in particular an indicator lamp, which comprises a recess for coding and an additional recess for positioning the lamp ring in a base mounting machine. According to the invention, the second recess has an inner wall with a projection.

Abstract: A spiral-wound filament (110) for an incandescent lamp, includes two lead-in wires (1102, 1103), the lead-in wires (1102, 1103) having one bent limb (11021, 11031) each which are arranged in a joint plane that extends off-set in parallel to the winding axis (1104) of the spiral-wound filament (110). An incandescent lamp that has an axially symmetric lamp base (100) and a spiral-wound filament (110) that is off-set in parallel to the lamp base axis (A-A) is also disclosed.

Abstract: A high-pressure discharge lamp includes a quartz glass discharge chamber (1) having at least one end (11) provided with a molybdenum film sealing element (2) and at least one electrode (4) which is connected to the sealing element (2) and is protruded in the lower chamber (10) of the discharge chamber (1), wherein the lamp includes a spiral (5) whose slope is equal to or greater than 600% and which encompasses the part of the electrode (4) in the end (11) area provided with the sealing element (2) of the discharge chamber (1) outside of the sealing element (2).

Abstract: A high-pressure discharge lamp with an axial symmetry axis and metal halogenide filling has electrodes with shafts designed as pins with a diameter of 0.5 to 1.15 mm. The halogen for the halogenide is composed of iodine and possibly bromine components, iodine being used alone or in combination with bromine, and the bromine/iodine atomic ratio amounting to maximum 2.

Abstract: A lamp 8 has a lamp vessel 16, a portion 58 of which is received in a receiving part 44 of a holding body 4 and fixed by a joining compound 48, wherein a protective layer 60 is applied to the portion 58. A process for producing a lamp of this type is also disclosed.

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: The invention relates to a fluorescent lamp for the illumination of plants, having a tubular discharge vessel, two electrodes which are fused in a gastight manner into the ends of the discharge vessel, a fill comprising at least a noble gas and mercury, and a phosphor coating on the inner wall of the vessel, the phosphor coating at least including a europium-doped barium magnesium aluminate phosphor of the BaMgAl10O17:Eu type and a cerium- and terbium-doped gadolinium zinc magnesium pentaborate phosphor of the Gd(Zn,Mg)B5O10:Ce,Mn type, and, to generate light with as high a light yield as possible and with a color temperature of between 4000 and 5500 K, the phosphor coating additionally includes an antimony- and manganese-doped calcium halophosphate phosphor of the Ca10(PO4)6(F,Cl)2:Sb,Mn type. This novel phosphor coating allows the light yield to be increased by 10% if the proportion by weight of the individual phosphors is optimized.

Abstract: A coupling element (2) is proposed for the combining of at least two elongate lamps with in each case two ends. For this purpose, the coupling element (2) has a continuous receptacle area which is provided for receiving an end of each lamp. The receptacle area comprises a reflector (6) in order to reduce the luminance decrease in the region between the lamp ends. With one or a plurality of coupling elements according to the invention in conjunction with two or more elongate lamps, illumination systems having different luminous lengths can be realized in a modular manner.

Abstract: The invention relates to a discharge lamp, in particular a high-pressure discharge lamp having a discharge vessel, which has at least one sealed-off end which is provided with a current feedthrough. The section of the electrode which extends into said sealed-off end is provided, according to the invention, with a coating, which contains a high-melting metal from the group of the platinum metals, preferably ruthenium.

Abstract: The invention proposes a simpler way of removing heat from integrated power components. For this purpose, a heat transfer device, in particular a thermally conducting mat (3), is inserted between the components (2) to be cooled and a core of an inductive component (4). The heat produced by the power semiconductors (2) can thus be dissipated to the core of the inductive component (4).

Abstract: The present invention relates to novel discharge structures for dielectric barrier discharge lamps, in which discharge electrode sections 5, 6, which are associated with the individual discharges 7, of the respective electrode strips 3, 4 overhang adjacent sections of the electrode strips 3, 4.

Abstract: The invention relates to a communication method for exchanging data between an operating device for a light source and a control device in the case of equipment for projecting images. Simple signals present are used to transmit complex information. The information is imaged in this case by the pulse duration or the amplitude of the signals.

Abstract: A luminaire having a light source, an optical conductor with a light exit surface that is optically coupled to the light source, and operating elements for the light source. A plurality of further light sources are provided to which the optical conductor is optically coupled. The light sources have an essentially punctiform light emission characteristic, and the light exit surface is designed to scatter light diffusely, and the other outer surfaces, not serving for launching light, of the optical conductor are designed to be totally reflecting or in a silvered fashion.

Abstract: Circuit arrangement for igniting high-pressure discharge lamps by means of resonance ignition by a resonant circuit. According to the invention, the voltage for an auxiliary ignition electrode is provided by an ignition transformer into which the voltage is fed via an inductor of the resonant circuit. The inductor of the resonant circuit preferably forms the primary winding of the ignition transformer.

Abstract: A reflector lamp having a reflector which has a reflector neck and defines a reflector axis, and an electric lamp fixed in the reflector neck by a metallic holder, in which

Abstract: The invention relates to a method for producing an electric lamp, in particular the application of an optical shield (5) to a cylindrical part of the lamp vessel (2). According to the invention, the optical shield (5) is applied to the lamp vessel (2) with the aid of at least two prefabricated opaque wax films (5a, 5b) which are provided with a colored layer and are joined in such a way that the width of the transparent window can be set independently of tolerances of the diameter of the lamp vessel (2). The wax of the films (5a, 5b) is vaporized by a heat treatment such that only the heat resistant colored layer remains on the lamp vessel (2).

Abstract: A discharge vessel with an excimer fill comprises a cap, electrodes and a fill having at least one noble gas and a halogen, which, when the lamp is operating, together form an excimer, the discharge vessel being manufactured from quartz glass. The inner wall of the discharge vessel is completely covered with a passivation layer of a metal oxide of the metals Al, Hf, Y or Sc or the mixed oxides thereof, the layer having an amorphous structure and its layer thickness being 20 to 200 nm.

Abstract: The invention relates to a ballast for operating at least one low-pressure discharge lamp, preferably a three- or four-lamp ballast. In order for all parallel- or series-connected low-pressure discharge lamps (L40-L43) to shine equally bright even in the case of strong dimming, the ballast according to the invention has a transformer (Tr40) for balancing the currents in the lamp branch circuits and a transformer (Tr41) for compensating the losses owing to parasitic capacitances.