I just bought a [relatively] cheap 532 nm today. It's Chinese with no stated power rating to speak of. It draws 300 mA at 3 Volts, but that stat is of no use because it clearly has a linear current regulator inside (the current stays the same as voltage goes up beyond 3 V).
I assume it's a 5 mW toy, but I hope it could be more than that in practice. Is there any way, an experiment, to roughly guess its power? On the scale of 1-5-20-50 mW?
I seem to get a burning sensation if I cover the aperture with a finger or hand, but I'm not even 100% sure I'm not imagining it, it's so subtle. And I assume that if the sensation is real, it may well be from IR and not from the 532 nm light?..
I assume it's a 5 mW toy, but I hope it could be more than that in practice. Is there any way, an experiment, to roughly guess its power? On the scale of 1-5-20-50 mW?
I seem to get a burning sensation if I cover the aperture with a finger or hand, but I'm not even 100% sure I'm not imagining it, it's so subtle. And I assume that if the sensation is real, it may well be from IR and not from the 532 nm light?..