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FrozenGate by Avery

Safety goggles, Do I need them?

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popopo8776

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I am going to be presenting a 200mw 408nm violet laser in front of my class for a project i am doing on high powered lasers, and i was wondering... Do we all really need safety goggles? thank you
 





Most conservative answer - yes. As long as you're aware of where the beam is pointed and make sure it doesn't hit anything reflective you should be fine. Have it set up on a tripod with a beam stop in front of the class and that should keep any accidental reflections from happening and will also be stationary and unlikely to cross paths with anyone's eyes.
 
oh and right next to that question, i have one about the laser itself, is it powerful enough to light a candle? because when i tried all it did was create smoke, there was no ignition. and possibly what else can it do, besides light a match, and burn a hole through paper and a cd case?
 
Last edited:
popopo8776 said:
I am going to be presenting a 200mw 408nm violet laser in front of my class for a project i am doing on high powered lasers, and i was wondering... Do we all really need safety goggles? thank you
Click to expand...

Please post a link to the Laser you will be using...

If your Laser actually outputs 200mW then anyone that can
see the Laser is in the Danger Zone to get a direct hit to the
eyes.

It is Highly recommended that ALL spectators be protected
against any Laser beam that may inadvertently damage their
eyes.

A law suit is much more expensive.......

popopo8776 said:
what else can it do, besides light a match, and burn a hole through paper and a cd case?
Click to expand...

You can do some research on the Forum about what can
be done with Lasers... The question has been asked and
answered many many times before...


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
 
Last edited:
lasersbee said:
Please post a link to the Laser you will be using...

If your Laser actually outputs 200mW then anyone that can
see the Laser is in the Danger Zone to get a direct hit to the
eyes.

It is Highly recommended that ALL spectators be protected
against any Laser beam that may inadvertently damage their
eyes.

A law suit is much more expensive.......


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
Click to expand...

High Power 405nm Blue Purple Powerful Laser Pointer Beam Free Battery Charger | eBay
 
It doesn't say the output power on there that I saw. If you're going to attempt to light a candle and burn things up close you need to have a set of safety glasses. It may not get hot enough to reach the flash point of the wick. Have you tried focusing the laser onto the wick?
 
lasersbee said:
How do you know the output power of your Laser...:thinking:

That eBay listing does not show the actual output
power of that item. Although it shows an operating current
of 350mA...


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
Click to expand...

Beat me too it. The only way to know the output power for sure is to have it measured on an LPM. I'm sure someone could make an educated guess depending on its burning capabilities.
 
It could be anything from 1mW to 200mW with that label. The only way to know for sure would be to LPM it.
 
and how do i do that?
the label says it is a class IIIb, and i have burnt a hole through a cd case, i think it is 200mw or pretty close
 
You would have to purchase an LPM. If lasers is something you want to get into as a hobby then it would be good to invest in one. Lasersbee has a few different ones for sale.
 
How many is several people? If its not that many you could find some cheaper sets of glasses online. Obviously if its a lot a people it could get pricey to buy that many sets of glasses. What all do you plan on doing with the laser in front of the class?
 
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