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Old 07-15-2014, 02:07 PM #1
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Default Definite answer on S1933X?

Hey everyone. I might be getting a 400mW green laser soon (or maybe blue, haven't decided). I was researching around this forum and other forums for glasses, and the S1933X keeps coming up (amazon link: Uvex S1933X Skyper Safety Eyewear, Black Frame, SCT-Orange UV Extreme Anti-Fog Lens - Safety Glasses - Amazon.com)

The thing I'm confused about, is that I'm getting mixed reviews about this. For example, OP of this thread stated they DO block 532nm light (but not IR), but then a user stated they do NOT block 532nm light effectively (post #83):

Cheap Safety Goggles Destructive Test: Uvex S0360X Ultra-spec 2000

Can someone tell me if these are a good option for my 400mW green laser? I will use it sparingly indoors and definitely not on reflective surfaces. Mainly outdoors and very carefully monitoring people/aircrafts.

If these are not good enough, I will save up for an eaglepair but if these are sufficient I would rather just buy two of these. Thanks.

Also, quick question about goggles in general: If I am outdoors, pointing at stars, and laying down with a buddy, neither of us need glasses, correct? Even if our faces are very close to the beam? Can we look at the beam as it is coming out of the laser or should we only look far away?


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Old 07-15-2014, 09:21 PM #2
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Default Re: Definite answer on S1933X?

400mw is rather high power, I would save up for the eagle pairs.
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Old 07-15-2014, 09:50 PM #3
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Default Re: Definite answer on S1933X?

Yeah, I wouldn't trust the uvex. Any safety glasses without an OD rating I wouldn't trust.

As for outside/star pointing, you don't need them as long as you're careful. Just be aware of what your pointing at, making sure no reflective surfaces, vehicles, animals, ect. are in the beam path.

In fact, safety glasses would defeat the the purpose of the laser to point at stars.
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Old 07-16-2014, 12:03 AM #4
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Default Re: Definite answer on S1933X?

Quote:
Originally Posted by ChaosLord View Post
Yeah, I wouldn't trust the uvex. Any safety glasses without an OD rating I wouldn't trust.

As for outside/star pointing, you don't need them as long as you're careful. Just be aware of what your pointing at, making sure no reflective surfaces, vehicles, animals, ect. are in the beam path.

In fact, safety glasses would defeat the the purpose of the laser to point at stars.
That makes sense, thanks both of you. This is almost silly to ask, but which eagle pair do you guys suggest?

1.) These are the cheapest at $42 but in description it says "532nm DPSS green lasers that DO NOT produce significant amounts of unfiltered 1064nm infrared light". So it won't really protect against IR leakage? Eagle PairŪ 190-540nm Standard Laser Safety Goggles

2.) These are the second cheapest at $48, but only protect against 1064nm infrared light (not 808nm). Is that okay? I'm not very knowledgeable in this area, will my 532nm green laser produce IR of both wavelengths? Eagle PairŪ 190-540nm & 900-1700nm Laser Safety Goggles

3.) This is more expensive (and most attractive imo) at $58, but they protect against BOTH 808 and 1064nm IR.

http://www.survivallaser.com/Eagle_P...8_4768519.aspx

4.) This is the most expensive at $60, but this one has an OD of 5+ instead of the 4+ on the other ones. Kinda meh-looking but maybe the better protection is worth it? http://www.survivallaser.com/Eagle_P..._11309234.aspx

Any suggestions?

Last edited by Zhinkk; 07-16-2014 at 12:04 AM.
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Old 07-16-2014, 01:03 AM #5
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Default Re: Definite answer on S1933X?

Number 2 would be good just in case. If you know for sure it will have an ir filter, number 1 is good.
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Old 07-16-2014, 02:30 AM #6
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Default Re: Definite answer on S1933X?

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Originally Posted by ChaosLord View Post
Number 2 would be good just in case. If you know for sure it will have an ir filter, number 1 is good.
I am not sure. If it does not have an IR filter will it emit IR at both 808nm and 1064nm? or just 1064? The second one doesn't protect against 808nm.
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Old 07-16-2014, 02:40 AM #7
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Default Re: Definite answer on S1933X?

Any ir should be almost all 1064nm. It may likely depend on how well it's put together, aligned, ect..

I'm definitely not an expert on dpss, but I would think it unlikely that enough 808nm would make it past both crystals and the OC.

EDIT: I would think that safety glasses for dpss would cover 808 instead of 1064 if it did make it through in sizable quantities.
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589nm Dragonlasers Spartan 50mW
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Last edited by ChaosLord; 07-16-2014 at 02:43 AM.
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