Sun glasses

[Haz_622]

Do sun glasses give you any protection? Eg, From reflections, And from direct shines in the eye

 

[pseudonomen137]

Nope, they can even make it worse. Ideal laser goggles block the laser light, while letting most other visible light through so your pupils don't dilate. Sunglasses would barely block laser light at all, and would help your pupils dilate a little. Its a lose-lose situation basically, sorry!

 

[chimo]

What about the shaded glass in welding helmets? It's supposed to block UV and IR (as well as amost everything else ).

 

[SenKat]

Nope - again, they dialate your pupils, and can screw you up really bad if you take a hit in the eye with a laser. Bad idea - it is best to pop for the 40-50$$ for the right stuff

 

[Xenodius]

But you DO want to use them for IR diodes... right? Or am I totally messed up?

 

[SenKat]

Nope again !

you should ALWAYS use glasses that are designed to block the specific wavelength that you are working with. That is the only way to be 100% sure. Now, for hte REAL high wavelengths, I have been told that normal clear safety goggles protect you - but I would still check to be sure - I am talking about CO2 wavelengths of 10,600nm etc.

 

[pseudonomen137]

Nope again !

you should ALWAYS use glasses that are designed to block the specific wavelength that you are working with. That is the only way to be 100% sure. Now, for hte REAL high wavelengths, I have been told that normal clear safety goggles protect you - but I would still check to be sure - I am talking about CO2 wavelengths of 10,600nm etc.

Yeah, at 10600nm you can just use plexiglass, those goggles are cheap as hell

Xenodius, sorry but I'm not really sure what you were asking there.

 

[Xenodius]

I was asking if you could use sunglasses for IR diodes; I was under that impression... Thanks for the guidance! but Jeez! 10,600 nm, thats really high!!!

 

[Mac]

I compared them, and sun glasess, dont help AT ALL

 

[FokoF]

Im confused we go to all the cost of buying pretty lasers and then we have to wear goggles that block out what you want to see. How do laser show work then, they have highly powered lasers and the crowds dont wear any? Confusing :-?

 

[SenKat]

Well, if you are thinking about lasershows - by the time you split up the beam into a ton of seperate parts, and shoot it through diffraction gratings, etc - the power is fairly minimal, and also they shoot the laser above everyone's heads most of the time - so exposure is limited. When I wear my gogles - it is because I would be working close up with the laser - so as to avoid any accidental reflections, etc - so that way it is safer for my eyes. If I am taking outside shots, or pictures of diffraction gratings, etc - I generally do not wear my goggles, cause if you split a 100mw beam up into 400 pieces, the amt you would expose yourself to is minimal ! It is all about being safe, and protecting yourself - goggles are by no means mandatory in this hobby - but you take a HUGE risk with something irrelaceable if you do not wear them :-/ To be blind, I think would be horrible....

 

[Xenodius]

I thought the exact same thing before.

For lasers shows, AFAIK thats because; A: The beam isn't tightly collimated. B: The impact points on the beams are far away from the crowd. C: They use fog to make the beams themselves visible, which spreads the energy over an even larger area; Its like shooting a laser through a barely transparent film. Its not real powerful on the other side.

The danger of a laser is specular reflections. Theoretically, there is no danger in lasing a black, non-reflective surface. However, all surfaces exhibit SOME reflection. So in practice, the goggles help lessen the effects of possible damage due to specular reflections.

Get some goggles before you get a laser ;D ;D

 

[Mac]

Sun Glassess

 

[naplam]

I was asking if you could use sunglasses for IR diodes; I was under that impression... Thanks for the guidance! but Jeez! 10,600 nm, thats really high!!!

Good sunglasses block some IR (more or less the same as visible light). Bad ones don't even block IR. So it's a bad idea to rely on sunglasses anyway.

 

[timelord]

This subject has been covered on here and many other forums and the message is clear DO NOT USE SUNGLASSES WITH LASERS!!!

 

[Ashton]

What if the sunglasses are aupposed to block the energy? i.e. sunglasses that are rated 100% UV protective used with a UV laser? (though I hope nobody on here who doesnt know EXACTLY how to use them will be playing with a UV laser....)