The secret behind ZEISS sunglass lenses with polarisation filter:
When light is reflected off a smooth surface, sunlight on a wet road for example, it is partially reflected by the water. This reflected light can lead to distracting glare. The good news: this glare can be reduced by ZEISS sunglass lenses with polarisation filter. They simply filter the horizontally oscillating light elements. The physical principle behind this is that reflected light is polarised horizontally and is filtered by the vertical micro-mesh structure of the polarising spectacle lens.