Electrochromic Smart Glass – The Future of our Windows

Electrochromic smart glass uses the property of electrochromic materials to change the light transmission according to the applied DC voltage . By applying a low voltage of 3 volts [1] a bluish color is achieved. When electrical charges are applied to a microscopically thin coating (for example, tungsten trioxide , polyaniline ), it becomes optically active and changes color. The duration of this process can be from a few seconds to several minutes [2] [3] . Is the voltage applied or the polarity removed ?changed the voltage, the glass is transparent again. Depending on the application, the voltage can be controlled manually or automatically, for example by sensors that measure the brightness.

The glass requires power only during the coloring phase or when producing complete transparency. If no voltage is applied, the glass will retain its current color until power is restored.

Application examples
-In the vehicle construction as a roof window, for example with the -Ferrari 575 M Superamerica
-Automatic or at the push of a button dimming rearview mirror
-Building glazing for temperature regulation or as UV protection

Smart glass, also called switchable or smart glass, refers to a glazing that can change its transparency. The energy required for this is conducted to the windscreen either by electricity or solar radiation.

The application areas for intelligent glass are expanding, but since the price is still relatively high, it is more likely to be found in the luxurious office tower than in the ordinary residential building.

Some glasses protect against bright light and sun, while others only provide privacy. At times, the promising technology also regulates the temperature.

The innovation for more well-being – this is how smart glasses work
There are three different types of intelligent glazing, depending on which technique is used to make these glasses and their transparency:

Electrochromic glass (“switchable glass”)
Thermoelectric and electrochromic glasses can completely regulate the incidence or the irradiation of light and heat themselves. The light transmission, especially in the summer, can be reduced to 15 to 50 percent.

And this is how they work:

Liquid Crystal (LC)

Electrochromic glass / switchable glass
Electrochromic disks can change their color when a voltage is applied thanks to a special, thin coating. Although this does not create effective privacy, these glazings are nevertheless suitable for use as sunshades, for dim lights or for temperature control in the room.

Once the tension is removed, the switchable film becomes transparent again and the light can enter the room unhindered. Electrochromic windows in darkened form usually have a bluish color, which is due to the coating used. In high heat, they thus enhance the effect of a partition between inside and outside.

Thermochromic glazing
The coloring of thermochromic windows is influenced by the incident solar radiation or the heat generated thereby.

The glazing darkens automatically when the temperature on the glass reaches a certain level. This is done by a film with thermochromic substances.

If the sun hits the glass, the substances in the film will discolor and produce an effective sun protection glass. MH Dimmable Tint can control the process via an operator, sometimes even with a smartphone.