How does it Work?
When looking at the printed graphics that are applied to the outside of the glass, the eye is drawn to the printed colors because they reflect more light than passes through the see-through areas (provided the lighting on the outside is brighter than the inside).
The secret behind the one-way vision effect is ensuring the printed graphics are obscured or hidden from the other side of the glass. The rear of Contra Vision® Perforated Window film is black. This black backing exactly covers all the printed areas on the film without blocking the see-through (unprinted or perforated) areas. When looking through the reverse side of the film, the view coming through the film is dominant because the black layer absorbs light and is less apparent to the eye.
Please note lighting is a determining factor to the overall impact of see-through window graphics. Further information about the impact of lighting can be found here.