Low surface energy coatings

摘要

The invention relates to a method and apparatus for providing an outer layer coating on a substrate such as an optical lens and the coating has low surface energy properties. The method of the invention involves the introduction of gas including hydrocarbon groupings into the vacuum chamber in which the substrates are optionally previously coated and thereby allows the provision of the coating to be an integral part of a coating process and also allows the coating apparatus provided to be utilised. The current method allows control of the application of the layer by using control apparatus already provided.