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.
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