Posts Tagged ‘hard coating’

Hard Coating is a scratch resistant coating applied to the lens that adds durability, longevity, and visual quality. This coating is necessary for some materials, and many lens blanks come with a hard coating on them already. An example is poly-carbonate lenses, which come with a coating on both sides as they are very easy to scratch. When surfacing the backside coating has to be removed, so we apply a new hard coating to the backside of the lens before completing an order. We apply a backside hard coating on every lens material from poly-carbonate to a 1.74. There are two options that we use in the lab, Spin Coating and Dip Coating