Priva Lite "electric" glazing with "variable translucency" ...
Manufacturer's sheet: http://befr.saint-gobain-glass.com/b2c/ ... e&id=10780
PRIVA-LITE
Activate the transparency of the glazing yourself!
Benefits
* You go from transparency to opacity: immediate privacy at the touch of a button.
* You can combine it with functions such as burglary retarder, sound insulation and fire protection.
* You consume very little energy to activate it.
* You block almost all ultraviolet rays.
Where to use it?
* Interior: partition, door, glass slab, counter and protective screen.
* Exterior: window and facade, in single glass or high efficiency glazing.
* In opaque situation as a projection screen.
What is it ?
SGG PRIVA-LITE is a laminated glazing with controllable transparency. Between the glass sheets is a film containing liquid crystals (LC). Under the influence of an electric current, the crystals orient themselves and the glazing immediately becomes transparent. Without electrical voltage, the crystals are in a disordered position and the glazing has an opaline appearance. It is then opaque, while allowing light to pass through.
Not bad against solar overheating in summer! On the other hand I wonder how much it costs per m² ... can not be more expensive than window + blinds (overpriced for some models when you want non-standard dimensions ...)