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sanwu laser beam expander

steve001

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it's going to be 1W 520nm, 4W 470nm and 1W 635nm
it's all above 1W so i hope the beam will still be "very" visible or at least i hope the 520nm will be



thank you
I should have added previously that beam visibility also greatly depends upon what is in the air. Clear low humidity air such as desert air won't show the beam as well as humid air. I trust you now have a better idea of the factors that will affect visibility.
 





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