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I’m a new buyer and need advice

KayEm

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Oct 1, 2019
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When you say a few meters how many is that?in my basement I have problly 30 feet is that good?

I guess the short answer is yes (30 feet is 9 meters). But what I would also add is that if you use your lasers without glasses a lot, after a while you start to feel quite comfortable with doing so. That is actually not a good thing, because it makes you more likely to pay less attention to what you are actually doing with the laser. So there's a bit of a slippery slope that I think one always needs to keep in mind.
 



VLC18

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Sep 7, 2021
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34
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8
I guess the short answer is yes (30 feet is 9 meters). But what I would also add is that if you use your lasers without glasses a lot, after a while you start to feel quite comfortable with doing so. That is actually not a good thing, because it makes you more likely to pay less attention to what you are actually doing with the laser. So there's a bit of a slippery slope that I think one always needs to keep in mind.
Yes that totally makes sense. Do you think you could see the beam in a very dark room?
 

KayEm

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Oct 1, 2019
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Yes that totally makes sense. Do you think you could see the beam in a very dark room?

If you mean 100 mw green, the beam should be visible even in a dimly lit room. In a basement without any light even the cheapest 30-50 mw 532 nm laser will have a really bright beam enough to impress anyone who isn't familiar with lasers. Just look up XM360 on YouTube and check his lasers reviews. That should give you a pretty good idea of what different wavelengths look like in different settings.
 
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VLC18

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Messages
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If you mean 100 mw green, the beam should be visible even in a dimly lit room. In a basement without any light even the cheapest 30-50 mw 532 nm laser will have a really bright beam enough to impress anyone who isn't familiar with lasers. Just look up XM360 on YouTube and check his lasers reviews. That should give you a pretty good idea of what different wavelengths look like in different settings.
Thanks I will get one of those but I really want a 488nm or a 492 nm laser. My question is can I see those beams the 488 is 60 mw and the 492 is 100 mw. Also do you know what I can use as a beam stop so to speak? They are from the pocket series at San wu lasers. Is that a good company?
 

KayEm

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Oct 1, 2019
Messages
17
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3
Thanks I will get one of those but I really want a 488nm or a 492 nm laser. My question is can I see those beams the 488 is 60 mw and the 492 is 100 mw. Also do you know what I can use as a beam stop so to speak? They are from the pocket series at San wu lasers. Is that a good company?

1. You will be able to see the beams of both of these lasers, although I doubt that the 488 one will be all that bright. I'm pretty sure that an ordinary 303 green laser would be considerably brighter than that one.
2. Not quite sure what you mean by beam stop. Why not just shine it on the wall?
3. Sanwu is one of the top sellers out there.

And actually...

4. You're asking a lot of questions. Why not check some laser reviews on YouTube?
 

VLC18

Member
Joined
Sep 7, 2021
Messages
34
Points
8
1. You will be able to see the beams of both of these lasers, although I doubt that the 488 one will be all that bright. I'm pretty sure that an ordinary 303 green laser would be considerably brighter than that one.
2. Not quite sure what you mean by beam stop. Why not just shine it on the wall?
3. Sanwu is one of the top sellers out there.

And actually...

4. You're asking a lot of questions. Why not check some laser reviews on YouTube?
What I mean by a beam stop is when I eventually get a really powerful laser like the 7watt 445nm laser I’ve heard it’s very dangerous I have herd many youtubers mention a “beam stop”.just wanted to know. I have watched countless YouTube videos but none of my answers are really truely ansewred. I only really have one more questions and you may have already answered it but you can look at the beams right? It just has to be pointed at a non reflective preferably black surface. Also I’ve decided to get the 100 mw 492nm and the 150mw 525nm. Those are both relitivly eye safe as long as you don’t shine it in your eyes and are careful? And thanks so much
 

bostjan

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Dec 29, 2011
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161
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What I would call a beam dump, a black hole, so to speak, isn't a bad idea to have handy, especially with a >3W laser. You can make your own with a plumb bob and a metal tube.
 

KayEm

New member
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Oct 1, 2019
Messages
17
Points
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What I mean by a beam stop is when I eventually get a really powerful laser like the 7watt 445nm laser I’ve heard it’s very dangerous I have herd many youtubers mention a “beam stop”.just wanted to know. I have watched countless YouTube videos but none of my answers are really truely ansewred. I only really have one more questions and you may have already answered it but you can look at the beams right? It just has to be pointed at a non reflective preferably black surface. Also I’ve decided to get the 100 mw 492nm and the 150mw 525nm. Those are both relitivly eye safe as long as you don’t shine it in your eyes and are careful? And thanks so much

I can't help you with the beam stop, but as for your other question, yes, you can safely look at the beam and even at the dot of a laser that is ~100 mw, unless the dot is really close to you and/or is tightly focused. Just avoid reflective surfaces and do not shine it in the eyes of any living being from any distance. And of course be careful whenever you use the lasers outside (sky, streets, buildings, etc.). Also, make sure to try out the 100 mw one first. You'll notice that the 150 mw 525 nm is actually a really bright laser.
 

paul1598419

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Sep 20, 2013
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18,995
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Unless the light from your wall or other beam stop is collimated it cannot cause burns to your retinas. Even a white wall won't cause you harm as the light is not collimated and can be seen from any point in your room. That means all that power is spread out over the whole room. It may seem bright to you, but that is not uncommon on a bright sunny day outdoors. Hope that helps.
 




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