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Help with focusing blue laser/wierd beam shape?

daguin

daguin

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Mar 29, 2008
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Re: Help with focusing blue laser/wierd beam shape

rog8811 said:
but now i think you weren't referring to protective glasses.
Click to expand...
Correct, I cannot focus on the dot through my prescription glasses but I can without them strangely enough.

Regards rog8811
Click to expand...


Many prescription glasses have UV protection on them. The anti-UV coating interferes with 405nm light.

Peace,
dave
 





rog8811

rog8811

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Re: Help with focusing blue laser/wierd beam shape

The anti-UV coating interferes with 405nm light.
Click to expand...
Thanks for that Dave, I had never considered it may be coatings :)

Regards rog8811
 
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