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Astigmatism
(lemmy.nz)
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this post was submitted on 24 Aug 2025
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LED headlights are godawful astigmatism or no. Whoever invented them should be made to stare directly into the sun for the rest of time.
Only done poorly, which sadly is most cars, even new. They are aimed too fucking high. Headlights are meant to be aimed down at the damn road. Not up high for far reach. That's the point of highbeams.
I got projector leds for my car but i properly aimed them, the light has a sharp hard cutoff juuuuust below the windshield on Most sedans at distance to make sure I don't blind em. If i need more and it's safe I've got my highbeams which turn the road in even the darkest rural to noon.
The car designers specifically dampen their headlight output in the exact spot where regulators measure their light.
But there's also the issue that they have way too much blue light. Blue light still damages eyes even though it's only UV adjacent and not UV.
LED headlights would be fine if they weren't infinitely bright and a shade of blue/cool white. Just make them a bit warmer and not so bright.
Yeah, what I'm saying is that there are rules about how much you are allowed to blind everyone else and car designers are specifically circumventing them.
It would also be nice if they were a more pleasant colour.
The reason why car designers do this is because it sells more cars. People feel safer in a huge SUV / "truck" when though they aren't. People also feel safer when they can light everything up even though they aren't.
Source? There's like 100 different testing agencies around the world...