Goggles

[Ghostt]

couple questions, I have goggles that will work for the laser I'm getting. But what will happen if I don't have goggles on while using a 2w laser (I know to always where the goggles), Like obviously not point it in my eyes but way from me, would it still damage my eyes? And what about a welding mask for other people?

 

[lasersbee]

Re: Googles

couple questions, I have goggles that will work for the laser I'm getting. But what will happen if I don't have goggles on while using a 2w laser (I know to always where the goggles), Like obviously not point it in my eyes but way from me, would it still damage my eyes? And what about a welding mask for other people?

The first thing I would do is fix the spelling in the
Thread Title...:beer:

NEVER use a 2Watt Laser without appropriate Laser
Safety Goggles/Glasses...
An instant refection off a shiny surface could easily
blind you...


Jerry

 

[Bluefan]

Re: Googles

A welding mask won't be good enough. 2W is a lot, any specular reflection is dangerous and I wouldn't look up close to the dot on a matte surface without goggles. Pointers don't make a very stable setup, so unless you're outside and only pointing at stars, be very carefull and wear appropriate goggles.

 

[InfinitusEquitas]

Re: Googles

But what will happen if I don't have goggles on while using a 2w laser

If you happen to catch a direct hit, or a reflection - blinding flash, headaches, blindspot for the rest of your life. Possibly even from specular reflection.

Then again, I don't shoot myself in the foot every time I handle a gun

Welding mask is not enough. Get decent goggles for yourself and anyone else to whom you're going to be showing the laser indoors.

 

[Ghostt]

k I was wondering so If I need to get other people goggles, I'll probably end up buying a few more then.

 

[Fenzir]

Well if you're using it outside, pointing it night skies, no need to wear glasses as long as you're handling it safely. But if you're going to use it to burn paper, light matches, pop baloons, anything where it's hitting a surface less than quite a distance away from you, glasses are the way to go.

 

[Ghostt]

I'm gonna use it for a bunch of stuff, most likely to light "fireworks" from a distance.

 

[Haloid95]

I'm gonna use it for a bunch of stuff, most likely to light "fireworks" from a distance.

Make sure you wear glasses and everyone watching wears laser glasses too. Welding masks don't work on lasers. And the ground can have something reflective so make sure if you are lighting anything on the ground like fireworks to wear laser glasses.

oh ya and have fun!

 

[JohnTheRipper]

445nm OD4+ goggles for all within 100 feet of laser is a must if you want to use it around other people. Shiny surfaces reflect enough light to give you temporary flash blindness, and even permanent damage.

If it directly hits ANYONE'S eyes, even for a fraction of a second, 99.99% of the times whoever just got it shone in their eyes ends up partially or fully blind. Effects can even take up to 24 hours to take effect.

In addition, blue light is dangerous to the eye in general due to that it messes with your color vision...

Read the following sites for more info on laser safety and blue light.

Blue Light Hazard
High-energy visible light - Wikipedia, the free encyclopedia
Safety Information - Safe Lasers - Laser safety information, tools, and free warning labels.
Laser safety - Wikipedia, the free encyclopedia
Laser Pointer Safety - Independent resource on handheld portable lasers

 

[Ghostt]

what would be a less damaging light then?

 

[InfinitusEquitas]

what would be a less damaging light then?

Do a little reading on the forum please. That's a REALLY bad question to ask, and you will know why once you read up a little...

IMO there is are no stupid questions, but there are plenty of lazy and stupid people not willing to look for answers, please don't prove yourself to be one

Consult Sam's laser FAQ's, and there is plenty of info in the stickies on this very subforum...

 

[Ghostt]

kk, I can find it, didn't think about it at the time.

 

[Ghostt]

now I understand that red is the "safest" because it doesn't require conversion, meaning no IR. Okay so to I need cheaper (not 500$) goggles that will work for a 2w red laser

 

[InfinitusEquitas]

Read more. There is no "safer" light:banghead:

To use the gun/bullet analogy again, asking what light is more dangerous is sort of like asking if a hollow point will leave you more dead than an armor piercing round.

There are also no 2W red lasers. Pretty much the max you can get is ~400mW.

 

[Ghostt]

okay, I didn't get that form the faqs, okay I get it now. I'll read around more, and see what goggles are good for a smaller price.

 

[Tech_Junkie]

There are also no 2W red lasers. Pretty much the max you can get is ~400mW.

2W DPSS red (~671) lasers exist. Me thinks you should read more.

2W 671nm Red DOT Laser Module - China 2w 671nm Red Dot Laser Module,Dpss Laser Module,Laser Module for Laser Show in Manufacturing Equipment for Electrical & Electronic Product

635nm 2w Red Laser, Sell 635nm 2w Red Laser,Red Laser,Laser - Stage Lighting

index

Here is a 5W 5000mW 671nm DPSS Laser System [RD-671-05000-CWM-SD-xx-LED-W]

Some info from 2003-2004.

A fiber-coupled diode-array-pumped, intracavity frequency doubled by a LBO crystal, high-power Nd:YVO4 red laser at 671 nm has been developed in this paper. With incident pump power of 10.6 W, employing a type-I critical phase-matched LBO crystal, 2.23 W single-transverse-mode red light at 671 nm was obtained, with optical-to-optical conversion efficiency up to 21.0%.

ScienceDirect - Optics & Laser Technology : 2.23 W diode-pumped Nd:YVO4/LBO Laser at 671 nm