The Technology Behind Auto-Dimming Rearview Mirrors

An auto-dimming rearview mirror is an essential safety tool that helps drivers at night by stopping traffic lights dazzling from behind. It is usually designed with a unique electronic system with the ability to detect the amount of light in front and behind. In the event there is brighter light behind than the front light, the mirror automatically becomes dark.

Technology in Auto-Dimming Rearview Mirrors
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The auto-dimming rearview mirrors are designed using electrochromic technology, which utilizes electric current so as to tint the glass through a low-voltage power supply. The mirror surface features a layer of electrolytes like that of LCD used in mobile phones. The mirror darkens automatically according to glare brightness, and it adjusts once the glare is no longer detected.

Electrochromic technology has also found great use in the building design with the so-called ‘smart windows,’ which have been found to be energy-efficient in response to light and heat.