Table 1: Microlens arrays with different geometrical parameters.

DeviceMicrolens typesRadius (µm)Gap (µm)Hight (µm)Contact angle (°)

1Type 150 μm5 μm50 μm90
2Type 250 μm5 μm25 μm60
3Type 350 μm5 μm13.4 μm30
4Type 430 μm5 μm30 μm90
5*Type 550 μm5 μm50 μm90

 *In device 5, microlens arrangement was similar to honeycomb lattice; the other four types were orthorhombic pattern.