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Thibault - owner in transition on LPF

My new M-140 laser lighter






cool creation but a few flaws, for one it is not 2MW (Mega-Watt), you may mean 2W (2000mW) which is 0.000002MW. Has this laser been LPM'd or are you guessing that it is 2W (even though M140 diodes can reach 2W they dont always do this and it depends on the diodes efficiency). Next, there is NO heat sinking what so ever on that laser (a copper module is not a heat sink). Without any heat sinking the diode will rapidly fade and eventually die a horrible death. Some things you may want to address if you want your laser to survive or anyone to take you seriously
 
I never said 2MW... I said 2MW/m^2. That's different.
I wanted to add a heatskin but there's not enough space :-(
I only added thermal paste between the copper module and the lighter metal.
It should be over 2W with a M-140 and a G2 lens @ 1.7A but I don't have a laser power meter :(
 
why say 2MW/m^2....you know how many people know what that means, 1 out of 1000 probably. also i wouldn't say its over 2W unless you know for sure. even though you are using a G2 and driven at 1.7A, if your diode is inefficient then you could only have 1.5W. efficiency is key with lasers and thats why the NEED to be metered
 
The copper module appears to be wedged in the lighter which is metal is it not? That means the lighter itlself will act as a heatsink to some extent.
 
Livinloud said:
why say 2MW/m^2....you know how many people know what that means, 1 out of 1000 probably. also i wouldn't say its over 2W unless you know for sure. even though you are using a G2 and driven at 1.7A, if your diode is inefficient then you could only have 1.5W. efficiency is key with lasers and thats why the NEED to be metered
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lol i had no clue what he said but figured it was 2W LOL
 
LKY2009 said:
The copper module appears to be wedged in the lighter which is metal is it not? That means the lighter itlself will act as a heatsink to some extent.
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You're right but it would be better to have a bigger heatskin.
This is not a laser to keep turnded on for more than a minute.
 
Livinloud why ya tearin him a new one? That is a very cool creation there! With a very small duty cycle it could last a long time! Not only that, but in the video you could see him putting on safety glasses before ever turning it on. That alone shows he is making an effort to be a responsible laserist.

I like your style, friend. I look forward to seeing what else you make! I may have missed it, but what type of batteries are you using? Type and Size. +rep for being innovative.

Thanks,
Isaac
 
wannaburnstuff said:
I may have missed it, but what type of batteries are you using? Type and Size. +rep for being innovative.
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It's in my first post: two 300mAh LiPo
But I'm going to make a new video that shows the component and a part of the building ;-)
 
I was meaning the dimensions of the battery. Also, that's a lot of current draw! What are your runtimes like on the batteries?
 
wannaburnstuff said:
I was meaning the dimensions of the battery. Also, that's a lot of current draw! What are your runtimes like on the batteries?
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Right sorry.
These are 3.7V 300 mAh Polymer Lithium Battery LiPo 30*20*4mm.
To get the full power I'd say 3-5 minutes. After that the power goes down for 10 other minutes (still cutting black plastic).
 
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wasnt tearing him a new one or anything like that. just saw some flaws that could easily be fixed so figured id point them out so he could address them. btw the metal frame of the lighter is not thick enough to provide any sufficent heat sinking. basically the only thing acting as a heat sink is the copper module so yes keep the duty cycles down to a minimum or it will kill the diode
 
wannaburnstuff said:
Livinloud why ya tearin him a new one? That is a very cool creation there! With a very small duty cycle it could last a long time! Not only that, but in the video you could see him putting on safety glasses before ever turning it on. That alone shows he is making an effort to be a responsible laserist.

I like your style, friend. I look forward to seeing what else you make! I may have missed it, but what type of batteries are you using? Type and Size. +rep for being innovative.

Thanks,
Isaac
Click to expand...

=) +1
 
This is awesome! I don't think not having a heatsink is a problem, it's a lighter, you'll probably only have it on for a few seconds at a time:)
 
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