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a bit of a noob question, Since violet is a less visible wavelength, about how many mW would 405 nm need to be in order for the beam to be visible in a dark or lightly light room?
oh i see what you mean. the people's eyes are different... im thinking the driver i have is jsut really crappy then.. i put the multimeter to it and it reads .35 amps. but when i hook it up to the diode the dot is kinda bright but not really impressively bright.. it can light matches when tightly focused and burn the match stick but i thought that would just be from the wave length having a greater effect on the material.
@jay.. your pretty close to me im thinking air conditions are pretty similar.