190-375nm goggles vs 405nm laser?

[supermario680]

So there's these goggles... Od ^9 from 190-375nm's.. Not technically in a 405 bluray lasers wavelength but do they work? They sure appear to block the light... Thanks.

 

[Zeebit]

What is the OD on 405nm? You need at least OD3 to be protected.

 

[supermario680]

It skips around. 190-375 is the closest and its od9

 

[Zeebit]

No go. It won't protect you from 405nm. You have the chart?

 

[supermario680]

No go. It won't protect you from 405nm. You have the chart?

Well they do Not block 532 at all... But they appear to filter the 405 almost completely. And no no chart. They're work glasses.

 

[Zeebit]

Resize the image.

Got an LPM? Test it out to see if it really blocks 405nm.

Just curious, what are those for?

 

[supermario680]

Resize the image.

Got an LPM? Test it out to see if it really blocks 405nm.

Just curious, what are those for?

Yes I do, didn't think about that. that's a good idea. And we have many types of of lasers so different goggles.

 

[supermario680]

Well FYI i put the goggles in front of the LPM and I couldn't even get a reading.

 

[Zeebit]

Then the specs are off. You better test it with all other wavelengths you are going to use it with.

 

[supermario680]

Then the specs are off. You better test it with all other wavelengths you are going to use it with.

doubt it... These aren't ebay glasses... These are our official work laser glasses. (and 532 slices through like butter. )

 

[Zeebit]

Where do you see the 405nm wavelength in the ratings? I said the specs are off. I did not say its crap.

 

[supermario680]

Where do you see the 405nm wavelength in the ratings? I said the specs are off. I did not say its crap.

Well I don't know what you mean by "off" exactly... I doubt the ratings are inaccurate. I'm guessing it just provides a Lower level of protection for the 405 area. Or maybe its close enough to the 190-375 that it gets filtered anyways...

 

[Atomicrox]

Jut because the goggles don't say they block 405nm doesn't mean the specs are off. The specs would only be off if they said explicitly it doesn't block 405nm. Most laser goggles increase in visibility "slowly" and will filter to a lesser degree wavelengths close to the ones they are designed to block.

If there's no reading on the LPM you can use them safely. BTW, don't point a high power laser through the goggles to test them (unless you don't mind damaging the goggles) - test with a <100mW laser of the same wavelength.

 

[supermario680]

Jut because the goggles don't say they block 405nm doesn't mean the specs are off. The specs would only be off if they said explicitly it doesn't block 405nm. Most laser goggles increase in visibility "slowly" and will filter to a lesser degree wavelengths close to the ones they are designed to block.

If there's no reading on the LPM you can use them safely. BTW, don't point a high power laser through the goggles to test them (unless you don't mind damaging the goggles) - test with a <100mW laser of the same wavelength.

thanks yea that's what I was thinking but didn't know how to word it properly. lol

and yeah these lasers in particular are not powerful enough to damage them, they're like 60mw. (unfocused anyways)

 

[mortuus]

If you shine the laser through goggles on the wall, does it seem to block of the most?

 

[supermario680]

It SEEMS to block nearly all... If I shine THROUGH the glasses you can see a dot on the glass itself, but almost no light appears to pass through. So you don't see ANYTHING past the glasses.