Applications

New applications of Optical Variable Pigments (OVP)

New applications of Optical Variable Pigments (OVP)

Refractive microlenses cover a range of 10 µm to 2 mm lens diameters  Refractive microlenses are an interesting alternative for all applications where miniaturization and reduction of alignment and packaging costs are necessary. A refractive microlens refracts the incident light according to Snell's law, similar as large-scale glass lenses do. Refractive microlenses are manufactured in Fused Silica or Silicon or plastic materials, the later case being interesting for anticounterfeit techniques. We have realized the master for high productivity moulding of microlens arrays, targeting drug industry, with sizes down to 30 microns diameter.

In order to remove parasitic emitter diffusion around wafer edges of Solar Cells, laser technology is gaining more and more interest. The technique is fast, suitable for inline process, and contactless for safe handling of thin solar cell wafers. We have developed a very efficient process that makes use of high power, high quality single mode laser emitting at 355 nm, resulting in a process as fast as 1.5 s/cell, with isolation efficiency as high as 99% (as mesured by LBIC technque).