3 ms·

actually no, the 850nm wavelength of common IR LEDs does not have any adverse affect on your eyes at these power levels.

• verall 4y ago
  Do you have a source or something? I'm not trying to doubt you but I'm interested in learning further. I work on cameras with IR emitter and there are many safety protocols, emitter covers, warning signs, etc. for a simple IR camera that we are instructed to abide by.
  • brk 4y ago
    I work with a company that makes high-power IR illuminators and we just went through certification testing with some units that are roughly 100x the output power of this example and they did not pose an eye hazard. There is a bunch of stuff online about exposure to IR-A wavelengths, which covers the common IR LED/illuminator wavelengths. You certainly CAN build something which can cause various kinds of eye damage, but it is going to be a unit that you can literally feel the heat off of. For practical purposes, you couldn't make a wearable battery powered device that would be likely to cause eye damage without the entire thing being very large and unwieldy, assuming of course you are using standard incoherent (eg:non-laser) source.
• elif 4y ago
  The actually invisible NIR is 940nm but generally IR therapy devices come with blockout goggles like you'd use in a tanning bed. I'm not sure the power levels of this hoodie but if you're 3 meters away from an LED it's way different from if you are 10cm away.. I wouldn't assume safety when making up new use cases for a 'safe' product.