Free-track IR 2 DOF?

[albx]

Originally Posted by Blackdog_kt

Didn't know that, you learn something new every day here




Actually i think it's not. IR, visible light, lasers, radio waves, it's all the same thing. What changes are the frequencies/wavelengths, which is also a measure of the energy each beam carries.

Higher frequencies means shorter wavelengths and higher energies. That's why in the 40s most radios were short-wave radios...the beam had enough energy to travel far, scatter across the top portions of the atmosphere and then come back down on another part of the continent, so that the resistance fighters in occupied europe could listen to BBC for coded messages

In all this, IR ranks below the visible light in the amount of energy it carries. In that sense, looking directly into your TrackIR LEDs is less harmful than looking at the sky and certainly harmless when compared to other higher frequency devices we carry on us or spend time around every day (like for example a 2.4Ghz wireless router).

Not playing smart**s here, i just wouldn't want people to be scared of using head tracking when it makes such a big difference

it's dangerous for long exposure because you can't see it, it's different with the visible light that the eye will protect itself closing... don't say things that you can't prove for sure.. and you know exactly the IRled's wavelenght you are using? Can you measure it or just read the specs the manufacturer say?