Transparency or intimacy ... at your will!
Windows allow you to see as well as to be seen. However, sometimes, it may be desirable to be shielded from prying eyes.

SGG PRIVA-LITE®, "intelligent" glass, offers you this privacy at the flick of a switch.
SGG PRIVA-LITE®’s unique technology allows it to be switched from an ordinary-looking clear glass to a whitish translucent glass. At your will!


All it takes is a simple electrical switch to make the transition from clear to translucent. SGG PRIVA-LITE® allows you to see through it one moment and then shields you the next.
It’s as easy as turning the lights on!
Unisys - Amsterdam, The Netherlands
SGG PRIVA-LITE®’s secret: the Liquid Crystals
SGG PRIVA-LITE® is a laminated glazing made of two sheets of extra clear glass and a liquid crystal film.
The current standard composition is +-12mm thick.
Composition of SGG PRIVA-LITE®
The polymer and the liquid crystals are encapsulated in the LC film of which both faces are covered with a transparent, electrical conductive coating and are connected to the power supply thanks to 2 flat electrical busbars
Composition of the liquid crystal (LC) films
A simple switch and that’s it!
When the glass is switched OFF from its special power supply, the liquid crystals are randomly scattered and diffuse light in all directions.
In this state SGG PRIVA-LITE® is then translucent and prevents both sides from seeing through the glass.
SGG PRIVA-LITE® is translucent
By switching the glass ON, the crystals line up and reorientate themselves, turning the SGG PRIVA-LITE® totally transparent.
Switching from the non-transparent state to the transparent state is almost instantaneous and can be repeated as often as desired.
SGG PRIVA-LITE® is transparent