TechThe hidden significance of black dots on car windows

The hidden significance of black dots on car windows

Not everyone may have noticed the surprising feature on car windows: the black dots. These small, dark markings are not mere dirt or decorations. So, what exactly are these black dots on car windows?

What are the black dots on a car window for?
What are the black dots on a car window for?
Images source: © Getty Images | ti_to_tito

You might be curious about this feature now, which is present on every newer vehicle but absent in older models. Black dots on car windows aren't about fashion; they're functional and quite significant.

Black dots on car windows - what are they?

The term "frit" might be unfamiliar to you, but these small spots are highly significant for every car. The dots appear not only on windows but also on mirrors. Their purpose is partially to protect against glare, which can hinder driving. On mirrors, they divide visibility into sections: spherical and aspherical.

The aspherical area broadens the field of view, preventing dangerous blind spots. While not all drivers are aware of its usefulness, it's an effective "sensor" worth utilizing. Conversely, the spherical area operates differently and was more common in older car models. Additionally, the number of black dots provides information about the window's manufacturing date and indicates the year of production through embedded numbers, which helps verify the authenticity of the windows.

What function do black dots on windows serve?

Black dots are created during the window manufacturing process through specialized screen printing. They adhere to the glass, ensuring durability and resistance. This process is vital for attaching windows with frit, maintaining the structural durability that protects the car interior from excessive heat due to weather conditions.

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