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Old 07-22-2012, 03:08 PM #1
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Default A noob question regarding 1W 445nm safety

Hi guys,

Fairly new here and have been playing around with my 532nm 100mw for a while now and am already thinking of getting a 1W 445nm laser. I understand the hazards of these lasers at such power, but to what extent? Does looking at the beam dot on a white wall hazardous? or looking at the beam itself when shining into the sky ? i've seen some recommendations which i think might be exaggerated.

So if there is no indirect hit, no reflections of beam, is it safe to view the beam/dot of this blue laser?

I know the importance of wearing a safety goggles each time the laser is operated but i also want the freedom of playing tht laser freely when outside and i cant be wearing em safety goggles all the time ?

Hope to get some advice

Thanks


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Old 07-22-2012, 04:05 PM #2
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Default Re: A noob question regarding 1W 445nm safety

Beam on the sky - safe.
Dot on the white wall - safe from some distance, not safe under it. Safe distance not easy to calculate.
Burning - ie watching dot from close - not safe.
Manipulating with the laser inside where it can hit shiny objects - not safe.
Manipulating with the laser where it can fall and shine anywhere - not safe.
As you can see .. most of the time such laser is not safe without goggles.
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Old 07-22-2012, 05:56 PM #3
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Default Re: A noob question regarding 1W 445nm safety

Good advice.

Also watch out for retroreflectors that are often used for traffic signs.

They bounce the beam right back at you, and frankly, I was stunned the first time a 2W beam hit my eye, even with goggles.

Cheers!
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Old 07-30-2012, 07:53 AM #4
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Default Re: A noob question regarding 1W 445nm safety

don't play with it in the car )
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Old 07-30-2012, 10:26 AM #5
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Default Re: A noob question regarding 1W 445nm safety

Quote:
Originally Posted by ryansoh3 View Post
Good advice.

Also watch out for retroreflectors that are often used for traffic signs.

They bounce the beam right back at you, and frankly, I was stunned the first time a 2W beam hit my eye, even with goggles.

Cheers!
Too true! I did that once with a 5 mW (LPM'ed) green at about 1.5 Km and was shocked how bright it was!
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Old 09-17-2012, 02:46 AM #6
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Default Re: A noob question regarding 1W 445nm safety

Wearing goggles to protect your eyes = Safe
Having your friends watch without eye protection = Not Safe
Assembling the laser and putting in the batteries while wearing goggles = Safe, Doing so without goggles on = Not Safe
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Old 09-17-2012, 07:13 AM #7
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Default Re: A noob question regarding 1W 445nm safety

Quote:
Originally Posted by CDRGlock View Post
Wearing goggles to protect your eyes = Safe
Having your friends watch without eye protection = Not Safe
Assembling the laser and putting in the batteries while wearing goggles = Safe, Doing so without goggles on = Not Safe
I don't agree.
BTW, are you trolling?
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Old 09-17-2012, 04:58 PM #8
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Default Re: A noob question regarding 1W 445nm safety

Quote:
Originally Posted by Cel View Post
I don't agree.
BTW, are you trolling?
No. I am not.
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Old 09-17-2012, 08:06 PM #9
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Default Re: A noob question regarding 1W 445nm safety

Quote:
Originally Posted by DrSid View Post
Beam on the sky - safe.
Dot on the white wall - safe from some distance, not safe under it. Safe distance not easy to calculate.
Burning - ie watching dot from close - not safe.
Manipulating with the laser inside where it can hit shiny objects - not safe.
Manipulating with the laser where it can fall and shine anywhere - not safe.
As you can see .. most of the time such laser is not safe without goggles.
Quote:
Originally Posted by ryansoh3 View Post
Good advice.

Also watch out for retroreflectors that are often used for traffic signs.

They bounce the beam right back at you, and frankly, I was stunned the first time a 2W beam hit my eye, even with goggles.

Cheers!


Quote:
Originally Posted by CDRGlock View Post
Wearing goggles to protect your eyes = Safe
Having your friends watch without eye protection = Not Safe
Assembling the laser and putting in the batteries while wearing goggles = Safe, Doing so without goggles on = Not Safe

Last edited by InfinitusEquitas; 09-17-2012 at 08:07 PM.
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Old 09-17-2012, 08:08 PM #10
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Default Re: A noob question regarding 1W 445nm safety

LOL, IE, you are always the best!
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Old 09-17-2012, 08:16 PM #11
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Default Re: A noob question regarding 1W 445nm safety

Good one.
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