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Goggle recommendations, 200mW, 660nm






Machro

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Nov 14, 2010
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Yeah I heard that dragonlaser goggles do their job well.
I have a 50mw red laser and I randomly found some goggles @ home that work perfectly.
I'M NOT SURE SO PLS CORRECT IF I'M WRONG but i think that nearly every green glass,plastic blocks 650nm...
 
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Apr 5, 2011
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For this power (200mW), with these goggles and for this wavelength, let pass only 0.02 mW.

Rest assured, is more than enough.
 

Boz

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May 10, 2011
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I'm really new to this, would you mind explaining to me why there is only 0.02 mW left? Because the goggles don't show how much mW it blocks
 
Last edited:
Joined
Apr 5, 2011
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Ok, these glasses for this wavelength (621-740nm) are protection OD>4 (OD = Optical Density).

A type of goggles with protection OD4 for a one specific wavelength, only allowed to pass 0.01% of this wavelength.

OD>2 allowed to pass only 1%

OD>3 allowed to pass only 0.1%

OD>4 (in this case at this wavelength) allowed to pass only 0.01%

etc, etc....

the calculation is easy to do, 0.01% of 200mW = 0.02mW, this is what the glasses let pass.

That means it blocks 199.98mW of that wavelength.

I hope I explained well, my English is not very good :)
 
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