Abstract: The invention relates to an improved method of production for a flat radiator discharge lamp designed for dielectrically impeded discharges, in which, during a filling step for the discharge vessel, a plate of the discharge vessel is jacked up on parts, later softening, of support elements in order to be lowered onto the other plate at a specific temperature. In this case, the support elements serve, in addition, to improve the mechanical stability of the finished flat radiator. According to the invention, only a small number of the support elements present in a relatively large number are used for the outlined function of holding up the plate.

Abstract: A process for producing a discharge lamp which is designed for dielectric barrier discharges in which, during a filling step, before the discharge chamber is closed, a part of the discharge vessel is held in a raised position by a support element which is then at least partially softened, in order for the part which is being held in a raised position to be lowered. The support element lies outside the discharge chamber.

Abstract: An illumination system for backlighting liquid crystal displays has a flat lamp, which has a front side provided for emitting the light and a rear side opposite the front side, a flat housing having a planar rear wall and four side walls, the flat lamp being arranged within the housing on the rear wall, and a frame that at least partially surrounds the side walls of the housing and extends at least up to the edge of the flat lamp.

Abstract: The invention relates to a new design of discharge vessel for a discharge lamp, in which dielectrically impeded discharges are to be generated. In this case, a discharge vessel plate 1, 9 is, as it were, of two-fold design, specifically as a first discharge vessel plate 1 with an external electrode set and, in addition, as a stabilizing plate 9 outside the first discharge vessel plate 1.

Abstract: The invention relates to the capacitive modulation of the field distribution in a silent discharge lamp 1, by a structured, electrically conductive device 2 for definition of preferred locations for discharge structures in the lamp 1.

Abstract: In a discharge lamp having a discharge vessel and external electrodes, at least one electrode similar to a conductor track is an integral part of a laminate (5) which is adhesively bonded to the outer side of the discharge vessel and comprises a carrier film made of electric insulating material.

Abstract: A flat fluorescent lamp (1) has a discharge vessel (2) having a base plate (7), a top plate (8) and a frame (9) which are connected to one another in a gas-tight fashion by means of solder (10). Structures resembling conductor tracks function in the interior of the discharge vessel as electrodes (3-6), in the feedthrough region as feedthroughs, and in the external region as external supply leads (13; 14). Flat lamps of the most different sizes can thereby be produced simply in engineering terms and in a fashion capable of effective automation. Moreover, virtually any electrode shapes can be realized, in particular optimized with regard to a uniform luminous density with a reduced drop in luminous density towards the edges of the flat lamp. At least the anodes (5, 6) are covered in each case with a dielectric layer (15). The lamp (1) is preferably operated by means of a pulsed voltage source and serves as background lighting for LCDs, for example in monitors or driver information displays.

Abstract: A novel method for producing discharge lamps, in which discharge vessels 5 are filled in a chamber 4 with the required gas filling at normal pressure.

Abstract: The invention relates to a new design of discharge vessel for a discharge lamp, in which dielectrically impeded discharges are to be generated. In this case, a discharge vessel plate 1, 9 is, as it were, of two-fold design, specifically as a first discharge vessel plate 1 with an external electrode set and, in addition, as a stabilizing plate 9 outside the first discharge vessel plate 1.

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 discharge lamp having a base plate and a cover which is arranged in an essentially parallel manner thereto and which is corrugated in order to enable light to exit in a homogeneous manner.

Abstract: In the case of a quiet discharge lamp, support elements for supporting a top plate are provided, by comparison with a base plate, in larger numbers and in an alternating arrangement with individual discharge structures.

Abstract: The invention relates to an improved method of production for a flat radiator discharge lamp designed for dielectrically impeded discharges, in which, during a filling step for the discharge vessel, a plate of the discharge vessel is jacked up on parts, later softening, of support elements in order to be lowered onto the other plate at a specific temperature. In this case, the support elements serve, in addition, to improve the mechanical stability of the finished flat radiator. According to the invention, only a small number of the support elements present in a relatively large number are used for the outlined function of holding up the plate.

Abstract: The invention relates to a silent discharge lamp in which support elements for supporting a top plate opposite a base plate are designed as a unipartite component of the top plate and have a tapering contour.

Abstract: The discharge spacings in discharge lamps for dielectrically impeded discharges are shortened below 3 mm, as a result of which dead times of pulsed active-power injecting can be increased so strongly, for example beyond 50 ms, that the dimming properties of the discharge lamp are greatly improved.

Abstract: The invention improves an operating method, already described in the prior application 198 39 329.6, for a silent discharge lamp L, in which, using the forward transformer principle, a voltage pulse effecting a forward ignition is impressed from a primary circuit P via a transformer T into a secondary circuit S containing the silent discharge lamp L, and the secondary circuit S thereafter executes a half wave which, as a consequence of the polarization, leads to a back ignition in the discharge lamp L. The improvement consists essentially in that an inductance of the transformer T which governs a transformer current is temporally varied.

Abstract: A discharge lamp for dielectrically impeded discharges, having a discharge vessel filled with a discharge medium and having discharge electrodes which are at least partly separated from the discharge medium by a dielectric layer, wherein the discharge vessel is elongated at least in a longitudinal direction, characterized by a thermal device for controlling the heat transport into and out of the lamp nonhomogeneously in the longitudinal direction, which is designed such that in operation, the temperature in the lamp is made homogeneous in the longitudinal direction.

Abstract: The invention relates to a novel method for producing discharge lamps, in which discharge vessels 5 are filled in a chamber 4 with the required gas filling at normal pressure.

Abstract: The invention relates to a flat reflector lamp for dielectrically inhibited discharges (14). Greater configuration flexibility is achieved in electrode design (11, 12) while simultaneously ensuring stability of the discharge vessel (1, 2) and preserving the possibility of minimum light reflection impairment by mounting the spacers (3) separated from the flat reflector frames (15) between the base plate (1) and the cover plate (2), the latter being arranged between the electrode strips (11, 12).

Abstract: A description is given of an operating method for a discharge lamp with dielectrically impeded discharges and also a corresponding ballast and illumination system. The invention is directed at withdrawing the external lamp voltage across the discharge lamp in order to produce a back ignition in the lamp by virtue of an internal counterpolarization. The back ignition improves the efficiency of the lamp operation and makes it possible to construct a very small, lightweight ballast.