Interior Mirror, automatically dimming

The automatically dimming interior mirror offers greater comfort and safety when driving at night, as it stops you from being dazzled by following traffic. It consists of a mirror element and an electronic system that detects light from in front and behind by means of photo sensors. If the amount of light from behind is greater than that in front, the mirror is darkened. The surface of the mirror features a layer of electrolytes, similar to the LCD display of a mobile phone. The electrolytes consist of uniform crystals. When a voltage is applied, the crystals arrange themselves at a given angle, determining how much light is reflected. The strength of the voltage determines to what extent the mirror is darkened. The darkening effect and the subsequent lightening are virtually instant. And as you don't have to operate the mirror manually, your hands can stay safely on the steering wheel.