Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

I presume a CD or DVD burner has all the optics required to focus the laser
diode to a very tiny spot. Maybe it's just a matter of swapping out the
diode for an ultra-violet version. Also concerning not being able to see it;
I know the coating inside fluorescent tubes converts a lot of ultra-violet
to visible light. Maybe a target made form a piece of coated glass could be
made to "see" the dot at least long enough to focus it if required.



Sage





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