The hard coating machine from Optimal Technologies is equipped with 72 lenses/36 pairs per hr and diameter lenses is from 40 up to 82 mm. It is designed from tintable and non-tintable hard coating lacquers. It has a solvent vapour sensor and extinguisher for safety protection. The air supply is ranging from 8 mm pipe up to 6 Bar 10 litres/hour. It is featured with 150 mm duct-fan plus the speed control is included for the extraction of the device.