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Old 10-16-2010, 12:33 AM #1
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Default Can I use 3D glasses as temp goggles?

I just got a 150mw green and am still waiting for proper goggles.

However, I was playing with a pair of red/cyan 3D glasses and know that red blocks green, so I put them on... and if I look through the red lens with one eye, the green dot becomes a barely visible spec.

Does this mean I am protected, or is my eye "being fooled" as it would with a pair of sunglasses?


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Old 10-16-2010, 12:41 AM #2
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Default Re: Can I use 3D glasses as temp goggles?

Im not an expert in goggles, but i wouldn't recommend it.
I propose for you to just wait for your real goggles come in.

If your curious as to whether theyll be very protective, try shining your laser through the glasses and see how much of the laser dot is still visible. If its barely visible, then maybe they might be an OK set of temporary glasses. but i would double check with someone more knowledgeable than i.

hope that helped =]
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Old 10-16-2010, 12:49 AM #3
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Default Re: Can I use 3D glasses as temp goggles?

It's a simple question with a simple answer...

No. Not in the slightest way can you hope to be protected. If you need more than that advice then go seek another opinion. Alternatively, you can just believe me and save up for some proper goggles. I hope you take the latter option. It'll save time reading countless posts in this thread telling you what a bad idea it is.

There's plenty of info already posted as to the technicalities of, "No". You'll find it after digging for a bit.

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Old 10-16-2010, 12:49 AM #4
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Default Re: Can I use 3D glasses as temp goggles?

If they are not certified than it is not worth being blind for the rest of your life!
Eagle Pair is a good goggle that usually has OD +4 or +5 for most visible lasers.
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Old 10-16-2010, 12:50 AM #5
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Default Re: Can I use 3D glasses as temp goggles?

i too used these briefly with a green (about 5mw but used them for aligning) but after shining my 445nm at them they lasted a few seconds until a whole was burnt right through
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Old 10-16-2010, 12:52 AM #6
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Default Re: Can I use 3D glasses as temp goggles?

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If they are not certified than it is not worth being blind for the rest of your life!
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Old 10-16-2010, 12:54 AM #7
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Default Re: Can I use 3D glasses as temp goggles?

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i too used these briefly with a green (about 5mw but used them for aligning) but after shining my 445nm at them they lasted a few seconds until a whole was burnt right through
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Old 10-16-2010, 12:56 AM #8
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Default Re: Can I use 3D glasses as temp goggles?

If I shine the green laser through the red lens it's almost impossible to see the dot on the wall.

For those of you saying "absolutely not," have you tried this? Or does the fact that the red lens blocks the green light in some way NOT evidence that it would protect my eye?

And I'm not talking about looking into the laser, just to avoid staring at the brightness of the dot and i'm only talking about green, not any other wavelength.
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Old 10-16-2010, 01:00 AM #9
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Default Re: Can I use 3D glasses as temp goggles?

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Originally Posted by MojoLA View Post
If I shine the green laser through the red lens it's almost impossible to see the dot on the wall.

For those of you saying "absolutely not," have you tried this? Or does the fact that the red lens blocks the green light in some way NOT evidence that it would protect my eye?

And I'm not talking about looking into the laser, just to avoid staring at the brightness of the dot and i'm only talking about green, not any other wavelength.
Woohhw, calm down a little. You asked for advice, which is exactly what everyone gave you. I gave you my input. But if everyone else says its not worth it, then you should consider not using them.
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Old 10-16-2010, 01:02 AM #10
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Default Re: Can I use 3D glasses as temp goggles?

Well I guess it would be a interesting experiment to do if you have an LPM. I'm sure they are plastic and may not take a shot from high output, making it hard to test for long. Let us know what you find...I think there are different kinds of 3D glasses too...the ones I have didn't block anything(or do anything cool).
I still stand by it though....It's just safer to put your trust in something made for blocking the wavelength of light and not just looks like it does a pretty good job.
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Old 10-16-2010, 01:05 AM #11
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Default Re: Can I use 3D glasses as temp goggles?

Matt: Calm down? I think you are misreading brevity! I am really asking people if the fact that the red lens blocks the green really does not mean it would protect my eye! It seems logical that it would, but if there is some high tech reason why it wouldn't, I want to hear why, not just have people say "use official laser eyewear or else you're an idiot!"

For example, people say dark sunglasses don't work because they do nothing to actually block the wavelength and actually make it worse because they open up your pupil.

So, is a dark red lens the same thing? If I shine the laser through dark sunglasses it has no effect on the dot's visibility on a wall, but as I said, through the red lens you CAN'T SEE IT AT ALL.

Last edited by MojoLA; 10-16-2010 at 01:07 AM.
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Old 10-16-2010, 01:05 AM #12
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Default Re: Can I use 3D glasses as temp goggles?

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Originally Posted by MojoLA View Post
If I shine the green laser through the red lens it's almost impossible to see the dot on the wall.

For those of you saying "absolutely not," have you tried this? Or does the fact that the red lens blocks the green light in some way NOT evidence that it would protect my eye?

And I'm not talking about looking into the laser, just to avoid staring at the brightness of the dot and i'm only talking about green, not any other wavelength.
It's better than nothing while you wait for your goggles but kind of a futile attempt at blocking the light. Whilst specular reflections arn't good for your eyes I often view my 150mW greenie without goggles on as I enjoy looking at the beam, whilst the dot is VERY bright specular reflections won't instantly blind you and ok for short viewing times (in my opinion.)

The reason you buy certified goggles are so they not only block light, but can do it for a decent amount of time,those 3D glasses will just melt or pass the light almost instantly if hit with a direct hit. I guess for viewing the dot whilst your waiting for you goggles as I said earlier they'll have to do, if you want to avoid the chance of going blind 100% dont use your laser until you have your goggles.
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Old 10-16-2010, 01:10 AM #13
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Default Re: Can I use 3D glasses as temp goggles?

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Matt: Calm down? I think you are misreading brevity! I am really asking people if the fact that the red lens blocks the green really does not mean it would protect my eye! It seems logical that it would, but if there is some high tech reason why it wouldn't, I want to hear why, not just have people say "use official laser eyewear or else you're an idiot!"
I apologize if i sounded mean, i dont try to, im just stupid like that =/
and i see what your saying, and its really up to you and what you want to do. if the glasses block the laser, then it probably wouldnt harm you. but what everyone is saying is that its a little to risky and its better to just get approved goggles
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Old 10-16-2010, 01:15 AM #14
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Default Re: Can I use 3D glasses as temp goggles?

At the moment I am only looking at the beam, and if I view the dot it's against a piece of black velvet which significantly reduces brightness.

I'd love to try burning a few things, but the dot is too bright and I know it's dangerous to look at. After I saw how well the red lens blocked it, I thought it might make it "safe enough" for me to play with for a little while and get it out of my system before the official eyewear gets here!
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Old 10-16-2010, 01:18 AM #15
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Default Re: Can I use 3D glasses as temp goggles?

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At the moment I am only looking at the beam, and if I view the dot it's against a piece of black velvet which significantly reduces brightness.

I'd love to try burning a few things, but the dot is too bright and I know it's dangerous to look at. After I saw how well the red lens blocked it, I thought it might make it "safe enough" for me to play with for a little while and get it out of my system before the official eyewear gets here!
Sounds good =]
Sorry again for the rude reply. =[
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Old 10-16-2010, 01:19 AM #16
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Default Re: Can I use 3D glasses as temp goggles?

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Well I guess it would be a interesting experiment to do if you have an LPM. I'm sure they are plastic and may not take a shot from high output, making it hard to test for long. Let us know what you find...I think there are different kinds of 3D glasses too...the ones I have didn't block anything(or do anything cool).
I still stand by it though....It's just safer to put your trust in something made for blocking the wavelength of light and not just looks like it does a pretty good job.
the ones i have dealextreme shipped me in place of a torch (facepalm)... i refused to return them and got them for free (as well as the torch i ordered). they are hardened plastic lens almost exactly the same as my proper laser goggles, and when shining a green through them nothing appears to come out the other side (again it is very low powered).
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