• Destide@feddit.uk
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    5 months ago

    “From evening drives” Bad enough dealing with modern headlights with normal eyes

    • Farid@startrek.website
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      5 months ago

      Do modern headlights emit IR? I don’t think so. Which means these IR amplifiers wouldn’t change the intensity of headlights.

      • Death_Equity@lemmy.world
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        5 months ago

        IR is heat, so headlights produce a a lot of IR. Laser headlights emit less IR with the visible light, but radiate heat.

        • Farid@startrek.website
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          5 months ago

          Well, IR isn’t heat, but it’s associated with it. And since laser and LED lights heat up a little bit, yes, they of course produce a miniscule amount of IR. But it’s pretty much negligible in comparison to their visible spectrum emissions. If you’re already being blinded by the visible range of the laser, the IR part isn’t gonna do much.

        • Farid@startrek.website
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          5 months ago

          Now that I’ve read my own comment, I see that it came off harsher then I intended it to. Interpret it literally and not like a sarcastic statement.

          Btw, just occurred to me that these would probably not work in a car at all, because regular glass is usually opaque to IR.

          • HelixDab2@lemm.ee
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            5 months ago

            because regular glass is usually opaque to IR.

            I’m almost 100% positive that this is not correct, because I’ve been driven around by someone wearing PVS-14 NODs with no headlights, on dirt roads, in a commercial van. (Edit - most red dot sights also work very well with NODs, and those have one or two layers of glass, depending on which type of system it is. The sights that don’t work well usually can’t dim the dot enough to avoid massive bloom.) Glass is mostly opaque to thermal though, and a lot of glass significantly reduces UV.