Abstract: A method and a device are provided for detecting defects in coils, such as rollable ultra-thin glass, rollable glass films, rollable laminated ultra-thin glasses or films, rollable solar cells, and rollable organic light emitting diodes (OLEDs). The method includes: providing a glass ribbon in a coil with a shape of a hollow cylinder with two end faces and one ribbon surface; introducing light into a first of the two end faces so that the light is directed from a light entrance side at the first of the two end faces to a light exit side at a second of the two end faces and exits from the light exit side; detecting the light at the light exit side with a first optical imaging detector so that, if a crack is present, the crack is seen as a shading in an image captured by the first optical imaging detector.

Abstract: The present invention relates to a motor vehicle that is equipped with an electrical door closing mechanism, a radio-based signal receiver and a control unit, wherein the door closing mechanism can be actuated after receiving and verifying an access authorization code by electrical signals that are generated by a control unit. The motor vehicle possesses an electrical charging apparatus accessible from the outside so that a signal generator that is provided to generate the access code can be charged from the electrical system of the motor vehicle in the event of an insufficient charge. Furthermore, the invention describes a method for charging a signal generator that can be executed using the device according to the invention.

Abstract: A method for the production of glass or glass ceramic elements from flat glass or glass ceramic parts is provided where the edges of the glass or glass ceramic elements are treated by a combination of two processes. The flat glass or glass ceramic element with an edge surface connecting the two side surfaces is produced. The edge surface has at least one first elongated, strip-shaped edge region and at least one second elongated strip-shaped edge region, which are formed by a ground edge. The edge regions extend in the longitudinal direction along the edge surface and along the side surfaces. The first edge region has elongated parallel filamentary damages that are parallel and adjacent to one another and, in particular, spaced apart equidistantly, in the longitudinal direction thereof extending transversely to the side surfaces and along the surface of the first edge region.

Abstract: A method is provided for separating a portion from a sheet-like glass or glass ceramic element along an intended separation line to divide the element into the portion and a main part. The method includes producing filamentary damages a volume of the glass or glass ceramic element adjacently aligned along the separation line, the filamentary damages are produced by laser pulses of a laser, the glass or glass ceramic element comprises a material that is transparent for the laser pulses; displacing incidence points of the laser pulses on a surface of the glass or glass ceramic element thereof along the separation line; and subjecting the material of the glass or glass ceramic element located in a region of the portion to a phase transition so that the material contracts to detach the portion from the main part at the adjacently aligned filamentary damages along the separation line, while the main part remains intact as a whole.

Abstract: A method for filamentation of a dielectric workpiece has a workpiece with a thickness between 0.5 and 20 mm is provided. The workpiece has boundary surfaces delimiting the workpiece. The thickness of the workpiece varies spatially and/or at least one of the boundary surfaces delimiting the workpiece has at least one curvature with a radius of curvature between 0.1 ?m and 10 m. The dielectric workpiece can have a specially formed edge.

Abstract: A plate-like glass element including a pair of opposite side faces and at least one channel introduced into the glass of the glass element. The at least one channel joins the side faces and opens into the side faces. The at least one channel has a rounded wall and a transverse dimension of less than 100 ?m. The at least one channel extends in a longitudinal direction that runs transverse to the side faces. The rounded wall of the at least one channel has a plurality of rounded, substantially hemispherical depressions.

Abstract: A method for separating a portion from a sheet glass element having a thickness of at least 2 millimeters along an intended separation line that divides the sheet glass element into the portion and a remaining main part is provided. The method includes producing filamentary damages comprising sub-micrometer hollow channels in a volume of the glass sheet element adjacently aligned along the separation line; and heating and/or cooling the glass sheet element to cause expansion and/or contraction so that the portion detaches from the main part along the separation line. The portion and the remaining main part each remain intact as a whole. The step of producing the filamentary damages includes generating a plasma within the volume with laser pulses of an ultrashort pulse laser; and displacing points of incidence of the laser pulses over a surface of the glass sheet element along the separation line.

Abstract: A method is provided that includes producing filamentary damages in a volume of a glass or glass ceramic element adjacently aligned along a separation line and extend obliquely relative to a surface of the glass or glass ceramic element; and separating a portion from the glass or glass ceramic element along the separation line. The step of producing the filamentary damages includes directing laser pulses of an ultrashort pulse laser obliquely on the surface so that the laser pulses have a light propagation direction that extends obliquely relative to the surface and so that the filamentary damages resulting from the laser pulses have the longitudinal extension that extends obliquely relative to the surface; generating a plasma within the volume with the laser pulses; and displacing the laser pulses at points of incidence over the surface along the separation line.

Abstract: A method provides for producing modifications in or on a transparent workpiece using a laser processing device. The laser processing device has a short pulse or ultrashort pulse laser that emits laser radiation having a wavelength in the transparency range of the workpiece and which has a beam-shaping optical unit for beam shaping for focusing the laser radiation. The transparent workpiece is composed of a material that has a plurality of phases, of which at least two phases have different dielectric constants, of which in turn the one phase is a phase embedded in the form of particles, which phase is substantially surrounded by the other phase, and wherein the product of the volume of the particles specified in cubic nanometers and the ratio of the absolute value of the difference of the two different dielectric constants to the dielectric constant of the surrounding phase is greater than 500.

Abstract: A method for a high-voltage energy system of a vehicle wherein a pre-accident error state is determined which shows the current existing error of the high-voltage energy system prior to the time of an accident. Then an accident event is determined. A post-accident error state is determined which shows the current existing error of the high-voltage energy system according to the time of the accident. The high-voltage energy system is deactivated in accordance with the accident, the pre-accident error state, and the post-accident error state.

Abstract: A method for processing a thin glass is provided. The thin glass is subjected to a tensile stress ?app smaller than 1.15 · Min ? ( ? _ a - ? a ? 0.4 · ( 1 - ln ? ( A ref A App ? ? ) ) , ? ? _ e - ? e ? 0.4 · ( 1 - ln ? ( L ref L App ? ? ) ) ) , wherein ?a is a mean value of tensile stress at break for fractures in a surface of samples of the thin glass under bending stress, wherein ?a is a mean value of tensile stress at break for fractures emanating from an edge of the samples, wherein Lref is an edge length and Aref is a surface area of the samples, wherein ?e and ?a denote standard deviations of the mean values ?e and ?a, respectively, and wherein Aapp is a surface area of the thin glass, Lapp is a summated edge length of opposite edges of the thin glass, and ? is a predefined maximum fracture rate within a period of time of at least half a year.

Abstract: A method for cutting a thin glass including the steps of guiding, by a transport device, the thin glass ribbon over a levitation support, and directing, within a range of the levitation support, a laser beam onto the thin glass ribbon, which heats up the thin glass ribbon at an impingement point of the laser beam. The method also includes the step of blowing, by a cooling jet generator, a cooling fluid onto the track heated by the laser beam so that a region heated by the laser beam is cooled down and a mechanical stress is created. The cooling fluid contains vapor of a liquid at a saturation ratio of at least 0.5 or a plurality of liquid droplets. The liquid droplets form a contact angle on a surface of the thin glass ribbon which is smaller than that of water on the same surface.

Abstract: An airbag control device, wherein the airbag control device generates at least one actuation signal for an actuation time as a function of at least one sensor signal, wherein the airbag control device can maintain the at least one actuation signal for a holding time, wherein the airbag control device has at least one non-volatile memory in which the generation of the at least one actuation signal can be stored, wherein the airbag control device, when the at least one actuation signal is generated, stores a status signal in the at least one non-volatile memory or in a further non-volatile memory, wherein the status signal is deleted again if the at least one actuation signal was generated for longer than a storage time. Also disclosed is a voltage network in a motor vehicle and to a method for actuating a voltage network.

Abstract: A method for producing a glass article having a compressive stress zone close to the surface by redrawing a preform having a rectangular cross section is provided. The preform includes at least a first and a second glass, wherein both glasses are not connected to each other in the preform in a force-fitting manner. The second glass has a higher thermal expansion coefficient than the first glass and is located in the preform in the interior of the glass tube of the first glass. A glass laminate having increased strength is also provided, which is composed as an at least three-layer composite material of at least two different glasses. The individual layers of the layer composite are connected to each other over the entire area and in a non-positive manner, in particular by melting, and the glass laminate has a thermally stable compressive stress zone in the areas close to the surface of the layer composite and a tensile stress zone in the inner region of the layer composite.

Abstract: A glass ribbon in the form of a glass roll is provided that is optimized with respect to the requirements of a long service life and at the same time compact dimensions. A bending radius on the inner side of the thin glass roll is determined by performing breakage tests on samples of the glass material, statistical parameters are determined on the basis of the breakage tests, and the statistical parameters are converted into a range of bending radii which meet the requirements on service life and the most compact dimensions possible of the thin glass roll.

Abstract: A method for producing thing glass strips is provided that avoids camber defects. The method includes using a glass strip forming device that has a drawing device; drawing, using the drawing device, the thin glass strip away from the glass strip forming device; measuring, using a measuring device, variables that are dependent on a differing length of edges of the thin glass strip at at least two measurement locations spaced apart transversely to a longitudinal extension of the thin glass strip; determining a difference or a quotient of the variables. The difference or the quotient is used to determine a control variable by which the glass strip forming device is controlled so as to counteract a difference in velocities of the thin glass strip between the two opposite edges.

Abstract: A glass roll, as well as a device and a method for manufacturing the glass roll are provided. The glass roll includes a glass ribbon having a thickness, a length in an x-direction, and a width in a y-direction. The glass ribbon has at least one defect site at a position, as well as at least one error mark disposed on the glass ribbon, and is wound up into a glass roll.

Abstract: An airbag control device, wherein the airbag control device generates at least one actuation signal for an actuation time as a function of at least one sensor signal, wherein the airbag control device can maintain the at least one actuation signal for a holding time, wherein the airbag control device has at least one non-volatile memory in which the generation of the at least one actuation signal can be stored, wherein the airbag control device, when the at least one actuation signal is generated, stores a status signal in the at least one non-volatile memory or in a further non-volatile memory, wherein the status signal is deleted again if the at least one actuation signal was generated for longer than a storage time. Also disclosed is a voltage network in a motor vehicle and to a method for actuating a voltage network.

Abstract: A method for processing a thin glass is provided. The thin glass is subjected to a tensile stress ?app smaller than 1.15 · Min ? ( ? _ a - ? a ? 0.4 · ( 1 - ln ? ( A ref A App ? ? ) ) , ? ? _ e - ? e ? 0.4 · ( 1 - ln ? ( L ref L App ? ? ) ) ) , wherein ?a is a mean value of tensile stress at break for fractures in a surface of samples of the thin glass under bending stress, wherein ?a is a mean value of tensile stress at break for fractures emanating from an edge of the samples, wherein Lref is an edge length and Aref is a surface area of the samples, wherein ?e and ?a denote standard deviations of the mean values ?e and ?a, respectively, and wherein Aapp is a surface area of the thin glass, Lapp is a summated edge length of opposite edges of the thin glass, and ? is a predefined maximum fracture rate within a period of time of at least half a year.

Abstract: A method and a device are provided for detecting defects in coils, such as rollable ultra-thin glass, rollable glass films, rollable laminated ultra-thin glasses or films, rollable solar cells, and rollable organic light emitting diodes (OLEDs).