- Sep 20, 2014
I've just got a cheap 405nm off ebay and I too can see the beam!Yea I may have to change that. I don't have a LPM so I can't quite tell. I know I can't feel the laser on my skin unless I point it in my ear. (1 of most heat sensitive spots on the body).
Edit: changed it to 30-50mW. Close enough?
I have no LPM, so have used the DIY thermometer LPM idea together with a two lasers of known power to arrive at a rough guess that mine is 25mW. [lower than I expected as this is the same as 0.4mW of 534nm which I didn't think I would be able to see...]