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Old 10-17-2013, 01:22 AM #1
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Lightbulb What OD density Do i need for a 1000mW 445nm laser

So i bought a 1,000mW blue 445nm that is currently shipping and im wondering what OD density of laser safety glasses might i need

At the Moment i have a OD 4+ pair that protects 200nm - 540nm Wavelengths. will that be good enough to look at the dot on the surface without getting eye damage or eye strain?

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Old 10-17-2013, 02:58 AM #2
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Default Re: What OD density Do i need for a 1000mW 445nm laser

Yes OD 4+ will be plenty for 1000mw

The OD rating (optical density) signifies how many decimal points it reduces the lasers power by. For OD 4+ it will reduce the power of a laser by four decimal points. Therefore OD 4+ will reduce 1000mw down to 0.1mw. So yes OD 4+ is plenty.

Please search this before you make a new thread. I'm sure this had been discussed many times.

Last edited by will manners; 10-17-2013 at 03:06 AM.
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