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More dangerous are infrared lasers.
by amelius 1y ago
More dangerous are infrared lasers.
- giantg2 1y agoOr UV
- notherhack 1y agoIs there an effective anti-IR coating for eyeglasses like there is for UV? Seems like a good thing to have but a web search doesn't turn up much. It might interfere with facial recognition, but maybe that's a feature.
- compass_copium 1y agoZenni sells one now, with privacy as a selling point
- mrob 1y agoThin films of gold are reflective in the infrared and transparent in blue/green optical wavelengths. Gold can be applied to most surfaces by various physical vapor deposition processes in a vacuum.
- ottah 1y agoAny laser light strong enough to damage your vision, might also pass through a optical coating. Distance can attenuate the strength, but really the only defense is proper rated glasses for the spectrum.
- somat 1y agoOff topic: but in regards to UV protection, poly-carbonate(common in lenses) is UV-opaque. Completely clear uncoated PC lenses block most UV light. https://www.apollooptical.com/material-transmission-data-graphs https://www.apollooptical.com/material-transmission-data-gra... Note the sharp drop-off in transmission for wavelengths shorter than 400 nm.
- brookst 1y agoSmartphone cameras typically have IR filters, but no idea what the attenuation is and if the same coating would be sufficient.
- gblargg 1y agoWhat about visible lasers that lack an IR filter and have more IR energy in the beam?
- ascorbic 1y agoThey will at least trigger the blink reflex