Abstract: A method for fine positioning a component through the use of fusible elements having two or more melting points so as to establish intermediate displacements between totally melted fusible elements and unmelted fusible elements. Because of the use of non-eutectic fusible materials, fine adjustments in the displacement may be achieved.

Abstract: A method for fine positioning a component through the use of fusible elements having two or more melting points so as to establish intermediate displacements between totally melted fusible elements and unmelted fusible elements. Because of the use of non-eutectic fusible materials, fine adjustments in the displacement may be achieved.

Abstract: A method for fine positioning a component through the use of fusible elements having two or more melting points so as to establish intermediate displacements between totally melted fusible elements and unmelted fusible elements. Because of the use of non-eutectic fusible materials, fine adjustments in the displacement may be achieved.

Abstract: An apparatus for optical communication is provided. The apparatus includes a first waveguide formed on a first surface and a second waveguide formed on a second surface. The first and second surfaces are bonded together to form an air gap between the first and second surfaces and diffraction gratings of the first and second waveguides are facing each other. A third waveguide is formed on a third surface, and the third surface is bonded to the second surface so an air gap exists between the third and second surface and diffraction gratings of the third and second wave guides face each other. The light beam passes from the second wave guide across the air gap and into the third waveguide.

Abstract: An apparatus for optical communication is provided. The apparatus includes a first waveguide formed on a first surface and a second waveguide formed on a second surface.

Abstract: A process for preparation of powder coatings on substrates comprising the following steps of a) applying a powder coating composition onto the substrate surface comprising 40 to 90 wt % of at least one epoxy resin having an epoxy equivalent weight in the range of 1000 to 5,000, 10 to 60 wt % of at least one cross-linking (curing) agent, 0.1 to 15 wt % of at least one inclusion catalyst and 0.01 to 40 wt % of at least one constituent selected from additives, pigments and/or fillers, the wt % based on the weight of the powder coating composition, b) fusing, melting and flowing out the particles of the powder coating composition under increased temperature to a molten coating, and c) curing the molten coating; the one-component stable powder coating forms smooth and up to fine texture coatings and has improved flow and eliminates post-cure edge cracking and has a high opacity, hardness and flexibility.

Abstract: A single-mode optical waveguide with a core, surrounded by a cladding consisting of an inner soft layer and an outer harder layer is described. The outer layer has a grating structure on its inner surface, whose spatial frequency is the same as that of the guided mode. The thickness of the inner cladding is sufficient to keep the grating outside the mode field in undeformed regions of the waveguide, so that normally no out-coupling of the light results. Connections are made by crossing two such waveguides at an angle and pressing them together. This results in deformation of the two waveguides such that the gratings are brought into proximity with the cores. Light is coupled out of one waveguide and into the other in the deformed region, resulting in a self-aligning optical connection. The out-coupled light propagates normal to the waveguide axis, so errors in the crossing angle cause little change in efficiency.

Abstract: An array of acoustic drive units providing controlled high frequency dispersion and very low acoustic coloration. The array comprises mounting means for supporting a midrange acoustic drive unit and at least one high frequency acoustic drive unit, and an acoustically reflective surface. The high frequency drive unit is disposed in front of the reflective surface, the configuration of the reflective surface and the disposition of the high frequency drive unit relative thereto being such as to substantially eliminate any coherent reflection of sound from the high frequency drive unit. The reflective surface is generally concave, its outer periphery having a convex, curved cross section providing a smooth convex transition between the main reflective surface and its outermost edge. Typically, the reflective surface has a generally elliptical periphery and a quasi-ellipsoidal configuration, without focal points, and may incorporate or comprise a low frequency acoustic drive unit.