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200mw laser safety

Sevensixtwoby39

Sevensixtwoby39

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Is it safe to stare at a 200mw 405nm laser dot above 10 feet without safety goggles? I won't be burning stuff with it and also, will an unfiltered IR from green lasers show up in night vision goggles?

-One last thing, what are the side effects of eye damage from IR. Just curious.
 





Sevensixtwoby39 said:
Is it safe to stare at a 200mw 405nm laser dot above 10 feet without safety goggles? I won't be burning stuff with it and also, will an unfiltered IR from green lasers show up in night vision goggles?

-One last thing, what are the side effects of eye damage from IR. Just curious.
Click to expand...

1.no
2.all I know is it will show up on unIRfiltered cameras you can test this with the tv remotes IR LED.
3.not sure but most likely loss of vision.
 
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So it's not safe to stare at a 200mw purple laser dot at over 10 feet pointed at non-reflective surfaces? I know I need goggles but I'm still waiting for the shipping.
 
Ok thanks. But really though I should re-state my question in a specific manner.


Does the 200mw purple laser itself "cause damage to the eye itself" whilst looking at the dot for ever 10 feet pointed at a dark object. I know it's risky that something might reflect it back but does it actually cause damage. Well to be honest it's way more than 10 feet. Maybe 20 or more yards.
 
Class 3B
LASER RADIATION
AVOID EXPOSURE TO BEAM
CLASS 3B LASER PRODUCT (my 200mw purple laser is a class 3b)

A Class 3B laser is hazardous if the eye is exposed directly, but diffuse reflections such as those from paper or other matte surfaces are not harmful. The AEL for continuous lasers in the wavelength range from 315 nm to far infrared is 0.5 W. For pulsed lasers between 400 and 700 nm, the AEL is 30 mW. Other limits apply to other wavelengths and to ultrashort pulsed lasers. Protective eyewear is typically required where direct viewing of a class 3B laser beam may occur. Class-3B lasers must be equipped with a key switch and a safety interlock. -Wikipedia

I do understand that It's not worth the risk. I'm going to wait until I get my goggles before having more interaction with my new laser.
 
It'll probably be okay if the dot is reflecting off a non-specular surface. What you should do, however, is shine it on some bleached white paper so that you can see how bright it actually is when it causes fluorescence, not just the 405nm wavelength light your eyes aren't sensitive to and won't interpret as being "bright."
 
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