Old 04-18-2012, 08:26 PM #1
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Default Will this laser be able to light fuses? Blue 100mw or 300mw

Hey guys since i do not own any higher powered lasers yet so i decided to purchase one but i want to make the best decision before i buy.

I want to buy a low powered blue laser like 100mw or 300mw but i want something that can atleast light fuses, but at the same time not be THAT dangerous without laser goggles so i can still impress others without a huge worry of blinding people with reflections and all.

I wanted this one from lazerer - http://lazerer.com/Blue_Laser_Pointer/mini%20B%20-%20445nm%20100mW%20Pocket%20Low%20Power%20Blue%20L aser%20Pointer but will it be able to light a fuse?

or should i get this one? - http://lazerer.com/Blue_Laser_Pointer?product_id=236

Also how well are these goggles? are they worth buying for a 300mw blue laser? http://lazerer.com/LAZERER%20OpticPr...0445nm%20Laser



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Old 04-18-2012, 09:24 PM #2
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

If you can burn, then it can blind someone.
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Old 04-19-2012, 12:04 AM #3
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

^ It's fine you care about eye safety, but geez add some content John ._.

Yes, eye safety is a must here, how many people will you be exposing the light to and from what distance? Will there be many highly reflective objects or water around?

A 300mW *should* be able to light fuses. I know my 300mW red from a while back was able to, being blue has a higher light absorbtion on most materials (including a fuse) it should be capable of lighting one. However, I fear 100mW isn't enough, unless someone else can confirm that otherwise. If color doesn't really matter, go with a 405nm (violet) laser, they're better for burning.
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Old 04-19-2012, 12:09 AM #4
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

You can light a fuse with 20mw . You just need a way to focus that light down. A jewelers loop or magnifying glass should work. 100-300mw will TEAR through fuses .

Be safe and be careful! I recommend wearing glasses when burning stuff close-up.
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Old 04-19-2012, 12:11 AM #5
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

^
Well there you have it. the 100mW should be fine.

Now to explain why I use my 2200mW laser to light mine--
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Old 04-19-2012, 12:26 AM #6
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

lol^ Thanks everyone for the info I guess i will be getting a 100mw 405nm blue-violet laser, but will i need any extra focusing lenses to burn a fuse or will i be fine with the normal adjustable focus already on the laser?
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Old 04-19-2012, 12:31 AM #7
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

Just so you are not disappointed. 405 lasers are violet. The same color as a black light. 445 lasers are blue. I don't have a link to the laser you want to buy so I don't know if you will need any external optics.
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Old 04-19-2012, 12:37 AM #8
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

yes i am aware the beam is violet, to me both colors look great so i don't mind. I am possibly getting this one LZCS - 405nm 100mW Focusable Violet Laser Pointer but do you know if the laser would damage my eyes looking at the dot lets say 10 feet away or a little closer? and what about a 200mw?
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Old 04-19-2012, 12:47 AM #9
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

It says focusable in the description. So you wont need any external lenses to focus it. Just twist the knob .

As for your question reguarding the dot. No you wont go blind from looking at the dot on a NON-Reflective surface. For example your bedroom wall or maybe a tree. Looking at the dot period shouldn't have any adverse affects besides maybe giving you a headache because 405 light is near UV and your eyes have a hard time focusing on it. So no you don't need glasses for viewing. BEWARE OF REFLECTIVE OBJECTS!


I would however advise against not wearing glasses while burning stuff. Things that may normally NOT be reflective may become reflective such as plastics and tape extra. That is where you endup with possible eye damage. Eye damage is cumulative. Read about it . There's many threads about it here.

I believe that's about it.

If you have any more questions ill be happy to answer them.

Edit: This applies to the 405 laser you linked which is Class 3B. A class 4 laser is an entirely different story.
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Old 04-19-2012, 12:57 AM #10
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

Hey Jeffrey, thank you once again for all of your answers so far.

but i have a couple more questions before i decide.

Will these protect against 405nm lasers and 445nm lasers 100-300mw?
OpticPro - Full Angle Protection Laser Safety Goggles for 532nm/445nm Laser
or could i still get possible eye damage even when using those?

im thinking between this laser - LZSK - 445nm 300mW Focusable Blue Laser Pointer
and - LZMG - MAGNUM 405nm 200mW Violet Laser Pointer Water Proof

Are those both class 3B^?
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Old 04-19-2012, 01:05 AM #11
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

Those glasses seem okay. Lazereer is a good company but I haven't seen a review on their safety products. You can search for one yourself .

However if you want to make SURE that you are safe. Buy a certified set. They will run you >100$ but you can't put a price on your eyes.

A class 3b laser is any laser outputting below 500mw. Anything above that and you have a class 4 laser.
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Old 04-19-2012, 01:15 AM #12
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

Well as of right now i am going to buy the glasses with the 200mw 405nm laser. I think i will be fine for a bit as long as i still be as safe as possible even with the glasses on until i get a better pair. Thank you for all your help Jeffrey appreciate it!
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Old 04-19-2012, 01:21 AM #13
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

Being safe and responsible is better than any pair of glasses you can buy. The glasses ONLY protect the wearer.
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Old 05-18-2012, 01:35 PM #14
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

would he be able to use a less powerful laser just as effectively if he painted the end of the fuse black?
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Old 05-18-2012, 03:58 PM #15
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

Those Glasses are for blue 445nm and green 532nm not purple 405nm. The glasses are red you need amber .
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Old 05-25-2012, 03:24 AM #16
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Default Re: Will this laser be able to light fuses? Blue 100mw or 300mw

Quote:
Originally Posted by Xenophobe View Post
Those Glasses are for blue 445nm and green 532nm not purple 405nm. The glasses are red you need amber .
While the colour does matter, red vs amber just means the red one transmits only red light, while the amber one transmits less red and more yellow light. Whatever the dyes do transmit at ~550-650nm do not have any bearing on whether they will transmit at 400nm. It just happens that your 405/445 goggles was amber. If they used different dyes, it could have been red too.

http://lazerer.com/index.php?route=p...product_id=178
This one should block 405nm light, it appears green, meaning it blocks red and blue/violet light.
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