Abstract: A miniature optical component formed by the mounting of an integrated optic circuit chip has waveguides on a motherboard for connection with optic fibers. The fibers are positioned and aligned in parallel grooves hollowed out in the motherboard. The surface of the motherboard is hollowed out with female microstructures in the shape of axial buttonholes with sub-millimetrical dimensions, and the face of the chip has projecting male microstructures formed by metal deposition, capable of fitting into and sliding axially in the female microstructures during the mounting of the component. There is also provided a method for mounting a miniature component of this kind and a method for the matrix-based manufacture of a motherboard and a matrix device.

Abstract: A method for the production of an inherently stable self-supporting composite part for engine hoods for acoustic screening of noises. A prefabricated outer membrane blank part is cut and trimmed to form an outside sheet. This outside sheet is bonded to a prefabricated inside packing to form a self-supporting structure independent of the engine hood. The inside packing is provided with fastener elements and a removable protective film attached to an exposed surface of the packing. A primer is applied to the outside sheet of the self-supporting structure. A lacquer is applied to the primer and the protective film is removed.

Abstract: There is described a sound-insulating power vehicle part which includes a shaped outer sheet and an acoustically effective inside packing which together form an inherently stable lightweight composite part. To obtain this, a thermosetting plastic is used for the outer sheet while the inside packing is formed of a fiber-resin fleece, which is only slightly compacted in an acoustically effective main area and is closely compacted in its stabilizing areas.