Mirror coatings create interesting effects on eyeglass lenses - from a light shimmer to a total mirror coating.
Here you can find some info about production aspects, as well as Facts & Figures on a mirror coating.
Mirror coatings are created by the vacuum deposition of interference layers.
Unlike antireflective coatings whose effect is achieved by destructive interference, a mirror coating can be obtained through constructive interference. Due to the different thickness of the interference layers, different reflection colors can be achieved.
The mirror effect - the perceived intensity of the mirror coating - depends on the basic tint of the lens. In clear lenses or in lenses with only a light tint, the mirror layer is like a slight shimmer on the lens surface. The darker the tint, the more intensive the mirror effect becomes. With very dark tints, the wearer's eyes are no longer visible through the mirror coating.