best safety glasses for class 4 laser?

Hi guys. I'm new to this forum, so sorry if this is posted in the wrong place or anything .

Me and my buddy are working on a project involving a 405nm 2w laser. We are concerned about safety right now, and are wondering what the best safety glasses for operating this laser would be? Preferably cheap, we are operating on a small budget.

Thank you

If your budget allows, get the goggles from this link

... wish I could follow up with "We missed you"

What Marcus suggested is about the best suggestion. Eagle pair goggles are considered top of the line around here and not too expensive (some other models go up to $150). Survival laser is based in US so if you're from there, that's the fastest way to go.


I'm curious though, you say 2W 405nm laser? Don't you mean 2W 445nm laser? Cause if there are two-watt capable blurays out there, I missed a hell of a good news.

Haha love the pic

The laser is 445nm you are right. This is what we are considering Amazon.com : 2W 445nm M140 Blue Diode in Copper Module W/Leads : Everything Else

$80 across the two of us is a bit expensive. If that's the cheapest it gets, I might have to consider an alternate solution... What do you think about this? Ultimate DIY laser safety goggles

Eudaimonium said:

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D'oh, beat me to it...

DTR has a website: https://sites.google.com/site/dtrlpf/home (prices are same, just heads up)

That alternate solution....Well, don't know how else to say it, but its the stupidest thing I have ever seen in the history of laser safety, ever. Always. Ever.

If you don't have a huge budget, a cheap pair of orange uvex glasses will work. They aren't the best, but they will save your eyes from a direct blast. What application are you using the laser for? If it is for an engraver/cutter then a pair of uvex will be absolutely fine.

Just out of curiosity, why is the ghetto phone solution so bad? Seems like the only thing in danger is the phone. I will be using the laser to sinter/melt plastic in the context of 3d printing.

One risk I've read about is invisible wavelengths of light damaging your eyes without a direct blast occurring. Is this a danger with the orange uvex glasses?

MrAnderson said:

One risk I've read about is invisible wavelengths of light damaging your eyes without a direct blast occurring. Is this a danger with the orange uvex glasses?

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Yes, it is still a danger. But the m140 diode does not give out Invisible wavelength. It only gives out 445nm. Here a thread testing it: thread

Regarding the DIY safety goggles I have to agree with crazyspaz.


Here are the cheap Uvex, they aren't real laser safety glasses but they work good for UV through blue, I have some myself: Uvex S0360X Ultra-spec 2000 Safety Eyewear, Orange Frame, SCT-Orange UV Extreme Anti-Fog Lens - Safety Glasses - Amazon.com
These HDE glasses are also good, I have those too. If you must have something cheap, get one of those two but buy something better later if you can.
HDE Laser Eye Protection Safety Glasses for Green and Blue Lasers with Case (Red) - - Amazon.com

Alan

LOTS of good advice-

only buy cheap as a last resort- save up for the better ones== the VERY best are ~$300

save up for better and be extra careful til you do if using cheap --

side shields are important if you should hapen to take a hit from behind- as the inside surface of goggles is pretty much like a mirror- & it will reflect most of the power back into your eyes.

any time you experience afterimages you were in a danger zone- unless they go away quickly.. 'floaters' are another bad sign.

there is often very little or no pain as we dont really have much in our eyes in the way of pain receptors. Our lens can be our 'undoing'- thus the reason to avoid any horizontal beams between your waist and over your head- in the very worst case scenerio the power will be magnified as much as 100, 000 times for a perfectly flat shot to the center of your eye(just like the sun and a mag glass)

hope this is helpful hk

You cant put a price on your eye sight! Do yourself a favor, get some top of the range expensive ones. Try to stay away from cheap glasses!

"Better safe than sorry"

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hakzaw1 said:

...any time you experience afterimages you were in a danger zone- unless they go away quickly.. 'floaters' are another bad sign.

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By afterimages, you are talking about something similar to the shadow that you get after looking into a flashlight or the sun right?
Because i get those when i used my 2W 462 for a bit, burning stuff, although its much much weaker and a smaller "shadow" than after looking into a flashlight but it lasts for a few minutes, nonetheless.

And i do have floaters for a long time already, but it seems to be common, unless you are under the age of 16, im 25.
It has been pretty anoying over the last days, though, but i think thats more because im thinking about it, otherwise i doubt i would notice it, i never really did.

I should probably include, that im using Survival Lasers Eagle Pair 190-540nm & 800-1700nm OD5+ all the time while doing anything with my 2W laser.

^^^
any bright light we see leaves after images- they are the 'opposite' color..
IE if you look at a very bright red light then look away you will see blue afterimages.
and yes they do look kinda like shadows at times.

I like very much your choice of eye protection.

as my UK friend likes to say "you only get one set of 'seeing balls'
protect them!!!

hk

Learned some things from this thread. Thanks for members input