Humidity influence on antistatic properties of optical coatings

In this work antistatic properties as ability to dissipate static electricity of different types of materials were investigated. Dissipation of static charge was investigated in relation to humidity changes. It has been shown, that decreasing humidity affected badly on charge decay time of some optical lenses examples. Additionally single layer of TiO₂ thin films on SiO₂ substrates were measured in the same experimental conditions and collected results were compared with those for optical lenses in relation to their antistatic properties.