Individual LED solutions for high demanding applications are designed by polyscale and often cannot be served by existing solutions of the market. Especially those to be combined with light guide technology require features which are not standard. Requirements on luminance in technical/architectural lighting ask for a customized LED product. Parameters such as efficiency, mounting, circuitry and bin-management are as important as constructive specifications. The customized products achieve technical as well as commercial targets by usage of only established brands.