How does the "flip-down" option (to remove glare) in rear-view mirrors in cars work?

Question

Rear view mirrors in cars usually have the ability to be "flipped down" so that the headlights behind you aren't so bright. My assumption is that there is some sort of double-layered mirror inside the casing, which allows one mirror to look out the back window, and one to look somewhere else. How does this work? Thanks!

Answer 1

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it just changes the angle of the mirror slightly so it isnt as harsh on your eyes.

Source(s):

.. experience?
and i work at Napa

Answer 2

It is just that, a double layered mirror. One layer is flat, the other is kinda at an angle. When you the sun is behind you and blinding you or headlight behind are blinding, just flip it and you get the angled mirror. The angled side is tinted so it doesnt let a lot of light in but since the light thats blinding you is bright, you will still be able to see it. Its just like putting a film of tint over your mirror.

Answer 3

hiمرحبا تحياتي اليكم اني مشتاق اليكم كثيرا" شهاب