Pointing an 8MW against a window at an angle

[borgqueenx]

That being said, it is probably more wise to suggest that one would assume all lasers to be highly dangerous, no matter the power level.
AAlasers

yeah i guess that is true, for the newbies.
Well honestly i am alot less careful with my low powered lasers then high powered.
i leave everything above the 10mW in a locked box. and my laser projector well....dont ignore the warning wich says "do not stare into the beam"

 

[SilverOne]

Thank you all for your feedback, surely if i'm asking if pointing an 8mw at a window can be dangerous, i realize how dangerous these things are. i've actually lurked around for quite a bit on this forum.

:thanks:

 

[Bluefan]

15mW reflected of a window gave this guy a blind spot:
My first eye injury...
Be safe with lasers, we're warning people for a reason.

 

[SilverOne]

15mW reflected of a window gave this guy a blind spot:
My first eye injury...
Be safe with lasers, we're warning people for a reason.

Forgive me if i'm wrong, but it looks as he pointed the laser directly at his eyes and tried to "scan" them.

i'd be scared shitless if that happened to me, i'm paranoid about laser safety.

 

[borgqueenx]

15mW reflected of a window gave this guy a blind spot:
My first eye injury...
Be safe with lasers, we're warning people for a reason.

that link...

"This is view of the spot on the wall, very similar to what it looks like the beam hits your eye. If you see something like this, STOP IMMEDIATELY, but do not panic".

yeah right that means i actually may not watch my lasershows, unless he means the spot when the beam hits your eyes.

and this:
"“very fast scan will not damage my eye?” this is partly correct. Scanning faster will result in less eye damage. Even becomes save after a while. but this is all part of calculations of distance, power ect. you can can even get a 2W laser in your eye without getiing any eye damage. but then the laser has to be put far away, scans fast over your eyes, and has a large divergence.

I guess that link makes it for the newbies again who should be warned about to be careful with lasers.
But ofcource, if you get blind spots ect, then you have done something wrong, and you shouldnt do wrong in the first place.

Just saying this guy leaves out details, wich can scare people away.

 

[Bluefan]

I'm not saying that site is a master piece of work or that it holds the truth. I do however consider 20mW lasers dangerous and I advice to take safety serious. With all the watts around people seem to get sloppy on safety and push the limits of what they consider safe.

I'm not saying it's goggles or die, I've worked with a 5W Spectra Physics Millenia without the goggles for it. It was bolted to an optical table and the beam path shielded as recommended by the laser safety officer. It was a stationary setup, nothing was handled that came close to that beam.

Pointers however are different, just take a look at the sticky of Xoul in this section. In a professional situation Class 2 lasers are allowed for alignment, nothing more. Saying class 3A is safe is already stretching that up, but considering the small chance of eye damage that can be arguably justified.

So let me be perfectly clear: 20mW lasers are dangerous and 8mW lasers are dangerous too. Take the safety precautions applicable to a class 3b laser. I don't give a sh*t if anyone thinks I'm exaggerating, we're talking about laser safety here, not about your favorite flavour of lollipops.