What's this black dots pattern on this car wind shield for?

Our cars are all old so usually it’s bird shit.
(it’s for lookin’ through)

Are the dots only at the edges of the windshield?

It’s intentionally engineered to allow the windshield to have a surface around the edges that can be used with adhesive. The dots are there to make it look more appealing.

Something to do with bending the glass to fit the shape, the heat stays in the form of the black spots.
I’m 71% sure that’s correct, but don’t quote me on it.

@stanleybmanly Only at the top (I believe).

Na, it’s just an enamel coating that gives the glass something to stick to. The top part is sometimes extended down to make a secondary sun visor. If you look it’s actually around the whole perimeter of the glass.

On my car I only notice it in the areas that are not covered by the visors, like around the rear view mirror, and it helps mute the sun.
This article pretty well covers all the purposes it. https://www.glassusa.com/blog/help-what-are-those-black-dots-on-my-windshield/

Or…it could be African pigeon shit!

It’s to assist in blocking the sun shining in your eyes. It’s at the top of the windshield especially near the rear view mirror. There is a small area above the sun visor where the sun can shine through still blinding the driver. These dots, help to diffuse the sun’s rays so as to cut down on the solar blindness

If your car doesn’t come with them, you can buy some aftermarket from Amazon. Info gives better idea of how it’s used

Speaking as an englishman, what is this sun of which you speak?

Come to the US and I’ll introduce you two

Hold that thought…

Jack Kirby Dots

@ucme, it is a natural, outdoor source of light and heat. It is positioned far from the planet, so clouds and precipitation tend to block one’s view.
In the states, we actually wear special dark lens glasses to block it from shining too brightly at our eyes.
When you visit, don’t be alarmed by it, but you should protect that milky white skin with a product known as sunscreen.

How random.

My kid just told me out of the blue last week that this was to reduce the sun exposure of the adhesive. Haven’t actually checked to see if this was true or not.

@Patty_Melt No milky skin here, I have a natural olive skin tone, really rather pleasant to look at & touch…if you play your cards right pet! :D

Anti-glare.