The basis of the vario-optics' electro-optical printed circuit board technology is the optical layer. It can be attached to the substrate as an outer-layer, or it can be integrated as inner-layer, depending on the needs of the customer. The photolithographic manu- facturing approach enables the implementation of virtually any planar optical system with excellent characteristics at lowest costs:

• Dimensions typ. 50 µm x 50 µm
• Pitch > 100 µm
• Press laminated (optical layer as inner layer)
• Multilayer
• Withstands reflow soldering steps
• Lenses, splitters, combiners, taper structures, ....