Furthermore if they do make either of these, are they legal?
I don't think anyone makes a headlight that's UV or Infrared. Both are not very helpful for seeing, IR is non-visible light, so it's definitely out as a method of seeing. UV light is harmful in continuous quantity, as you no-doubt know.
IR lights would probably not be legal on the basis of not-providing-light, UV on the basis of being damaging. The legality probably doesn't exist because the question probably hasn't ever been raised.
Some companies do make lights that appear to be, or are marketed as an "ultra-violet color", that is, they're high violet on the visible spectrum and provide a significant amount of light as well. These of course, are not true UV.
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Yes they do have these but if you get them you'll need a camera that can detect uv light and a screen or projector to transfer image of uv light into a visible picture. Mercedes Audi n other car companies r experimenting with this technology IN ADDITION to standard headlights for night driving in place of brighter lights that would blind oncoming traffic this is their solution.
I'm guessing that you didn't bother to use Google, right? First page, fourth hit shows product information. IR kits are about $270, and are for military use (nightvision) only.I'm guessing that you didn't bother to use Google, right? First page, ninth and tenth hits report on tests of UV vehicle lights to illuminate road signs.
I wouldn't be surprised if some car headlamps threw out a lot of IR and some UV, unless they have a filter on them, I know halogens can output in the U spectrum and IR would definitely be coming off older ones.
unsure about Xenons and LED ones would be neither, right?
Headlights, as in for a car? That would definatly be illegal (and kind of pointless).
If you mean UV lights in a hoodie or cap for the purposes of "blinding" security cameras, there are instructables on the subject.
It's probably not against the law, at least in most "western" countries. Still, it's bound to raise questions if you're caught doing it.
They aren't terribly effective anyway. Different security camera manufacturers fit their products with different built-in filters. While one may be vulnerable to an UV light, another may filter it out pretty well. Any product designed in the last couple of years probably has such a filter. You'll never know if it's working or not until some security guy comes out and asks you to leave.
I remember an old article where UV headlights were used to light up street signs, but haven't seen anything recently. I don't think that they would be legal because half the reason to have your headlights on is so that you can be seen by others.