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Posted By Lawrence Laing
We have installed some machinery with class 2 lasers fitted, used for lining up and measuring, our plant manager thinks we should be supplying laser safety glasses, my thoughts are they are not needed. Thoughts anybody. Thanks
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Posted By holmezy Lawrence, class 2 lasers are quite common and providing folks don't deliberatly stare at them, they should be OK. Its assumed that the natural blink reaction will be enough to prevent any damage to the eye. No PPE ie safety specs required in this case. http://msds.chem.ox.ac.u...aser_classification.htmlHolmezy pedigree tonight me thinks.....
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Posted By Lawrence Laing
Cheers, I had seen the theory side I was wondering if anyone has any practical experience with them.
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Posted By John Donaldson
I would agree with Holmezy’s comments.
But just a word of caution.
Laser emitters can be overdriven and can then produce a beam of a higher classification.
Just make sure that someone is not tempted to “tweek” the electronics to obtain a brighter beam.
Probably wont happen but ……..
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Posted By Dave Merchant
I spent a few years working with such things (our terawatt CO2 was great for parties) and the first reply is correct - goggles are not required, and indeed cannot be used. If you wear goggles, then you can't see the laser - so using it for alignment becomes a little tricky!
As to tweaking the output - that's possible on open-board systems, but machinery alignment lasers are usually self-contained encased modules with a feedback regulator (diode lasers need regulation or they fry instantly, as they have a positive temperature coefficient) and so any variations to input voltage should be filtered out. You can kill one by over-powering it, but it won't be any brighter while it's dying.
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