Destructive test of o-like goggles

[Benm]

I recently ordered a pair of anti-green/blue glasses from o-like, which are pretty affordable at $24 shipped. I found they are at least OD3 for 445, 532 and 405 (not able to measure remaining power after putting the goggles in the beam).

I noticed these glasses are made out of plastic, and wondered how long they would actually protect you from a 445 at 800 mA. The answer to that question is: about a minute.

I set the focus at infinity and put the glasses in the beam with an edge i usually do not look through anyway. It takes about one minute for the 445 laser to melt through, but the good news is that there is no bleaching of the dye at all, its just the plastic that melts and eventually gets a hole.

Personally, i'd say these glasses are good value and indeed offer protection for accidental hits very well. The visible light left is problematic however: they really are low-pass filters, cutting off at around 580 nm. I will be getting some beter ones.

However, i wonder how other goggles compare to this result: has anyone tried to intentionally melt/burn/bleach (broken) goggles, and how long did that take at what power level?

 

[Bionic-Badger]

Which goggles are you referring to? The cheapest goggles I saw were about $37.

 

[Benm]

I see they arent currently listed on the site, but they are similar to these: Red laser safety goggles/590-780nm protective goggles [OLRLG650] - $14.99 : Welcome to O-Like.com, Your source for laser products - but then intended for green, blue and bluray.

See attached pictures of the damage, and the amount of visible light it takes out.

 

[DJNY]

Thank you Benm.
You should colored the 1 minute in your OP.

Are you able to take LPM measurements during this test and filming it?

 

[Benm]

I didnt take any power measurements - i dont have anything sensitive enough to register the remaining power with these goggles in the beam path. Also, it doesnt go straight through when its melting, as you can see the shape of the plastic is very distorted, and so is the 'beam' that passes through it.

There isnt much to see in a video either, its quite similar to a laser melting any other kind of plastic.

Also, i think its a really positive result: the red dye doesnt bleach out or anything, it takes actually melting the plastic to punch through - it was hot to the touch after the experiment.

 

[The_LED_Museum]

I destroyed a pair of Arctic 445nm LaserShades using the Arctic in just a matter of minutes with the unmodified beam; much less time with the focusing lens used.

Please see my writeup on these not-so-great laser "safety" glasses {clickable link}---> Arctic 445nm LaserShades