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Old 06-15-2012, 12:56 AM #1
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Gamemasher Gamemasher is offline
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Default Questions about bystanders without goggles?

I completely understand the importance of laser safety and safety goggles/glasses.
I bought these:
http://www.ebay.com/itm/Red-650nm-66...ht_3160wt_1058
Are they any good?

I just bought a 200mW red laser from Lazerer, so it is probably overspec (I paid extra for the test to be done). I bought two pairs of 600-70nm safety goggles. When searching around about laser safety, I read that only people in the immediate vicinity of the laser needs goggles, which makes sense. So I just have a few questions.

Assuming the beam is focused to a fine point and it is somewhere between 200mW and whatever overspec it might be at (it would not surpass 300mW, or even 250-275mW most likely)
1) How far away would someone have to be to not have their eyes damaged by looking in my direction (assuming I am outside and they are walking down the street or something) assuming the beam does not directly go into their eye? What if it reflects off of something matte and the "sparkles" go into their eye but not the direct beam?
2) What about during the night?
3) Let's say I did something like light a bonfire with the laser at night? Would anyone watching hurt their eyes by looking at the beam? How far away would they have to be for it to not hurt?
I know red isn't too bright and that it will not likely burn skin, especially at this level of power. I just want to make sure that I do not hurt anyone. Thank you all for your help.



Last edited by Gamemasher; 06-15-2012 at 12:57 AM.
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Old 06-15-2012, 01:24 AM #2
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Default Re: Questions about bystanders without goggles?

Hmmmm..... :/ Maybe I shouldn't have gptten those goggles. I think I found the original link here:
Red 650nm 660nm Laser Protection Goggles Safety Glasses - Eye Protection Wear - Components and Accessory
Recommendations?
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