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Ebay $9 blu-ray pens: GREAT!

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I decided to buy the combo pack as well after reading the OP's review. I didn't own any lasers before this purchase. Well, besides cheapo $2 red keychain pointers. They're definitely very cool and not what I'm used to at all.

The green one is very, very bright and it almost hurts my eyes to look at the spot for more than just a glance. And I can see the beam fairly well in a dark room (I'm sure this is no novelty to 99% of you guys, but it is to me!). The beam also seems to be very tight.

The violet one isn't as bright, which is just to be expected when comparing violet and green of similar powers. It's very interesting though, how it causes things to fluoresce which makes the dot look different on different materials; I have glow-in-the-dark stars on my ceiling so it's fun to point it at them and watch the afterglow. I can also see the beam of this one in the dark, but very faintly. Like some people in this thread have already mentioned, since it's close to UV, it's hard to focus on the dot so it looks totally different when you look at it through a camera or when you look at it with the naked eye. Mine doesn't have any visible artifacts to the dot, even when you look at it with the naked eye, but the beam diameter seems to be huge. That might just be a result of not being able to focus on it though.

I was hoping to get SOME sort of burning ability out of one of the two lasers; maybe stinging bare skin or getting a tiny puff of smoke out of a piece of leather or electrical tape, but neither one exhibits this behavior. For the price though, I think they're excellent lasers. Now then, on to more exotic lasers. ;)
 

DTR

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Hello all. Got my LPM today and thought I would share with you the results on these great pens.

405nm pen
Stable 45mW
Max 46mW

VIDEO LINK


Green module pen
This one starts out at around 23 then after 20 seconds it starts creeping up.
Stable 32mW
Max 34mW

VIDEO LINK

Hope this helps.
 
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Nice Vids DTR.
Thanks for even more info on the laser pointers.

I wish I had a LPF or some sort of way to determine the outputs when they come in.
 

DTR

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Nice Vids DTR.
Thanks for even more info on the laser pointers.

I wish I had a LPF or some sort of way to determine the outputs when they come in.
Glad to help. There may be some variations on these but this should give you a good idea what power they are putting out.
 

DTR

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I am not sure how much IR these pens are putting out. I metered them as they sit.
 

qumefox

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My batch of 405/green's should be here tomorrow. I plan to torture test one of the 405's as cheap as they are, and see what current the drivers are capable of, and what the LD can take at various powers while watching the output over time on the LPM looking for degradation. I figure as cheap as they are, it really doesn't matter, and I can always stick a PHR in it when the diode in it is no more.. which it will be when i'm done. :D

Expect pics and stats in the next few days. Though as detailed as I plan to make it, i'll probably start a new thread in the BR section on it.

As far as the greens, i'll know more after I get my batch but you can probably figure about 60% of the power being IR.
 

Blade

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im considering one or a few of these as starters... maybe i can mod them or something:thinking:
 

cexshun

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My batch of 405/green's should be here tomorrow. I plan to torture test one of the 405's as cheap as they are, and see what current the drivers are capable of, and what the LD can take at various powers while watching the output over time on the LPM looking for degradation. I figure as cheap as they are, it really doesn't matter, and I can always stick a PHR in it when the diode in it is no more.. which it will be when i'm done. :D

Expect pics and stats in the next few days. Though as detailed as I plan to make it, i'll probably start a new thread in the BR section on it.

As far as the greens, i'll know more after I get my batch but you can probably figure about 60% of the power being IR.
There's already a few neutral and negative feedback for the seller claiming the lasers didn't last long. I'm not sure how much more you can squeeze out of them. Seems they already have a short lifespan.
 

qumefox

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That may be the case and it wouldn't surprise me. I'll know more once I get mine and tear in to one.. but I don't get the negative feedback though. These are sub $10 chinese lasers that are way overspec.. I'm not sure why anyone would honestly expect any of them to have long lifespans. 'You get what you pay for' very much applies to cheap lasers.

If they didn't work at all, and the seller refused to replace them.. Then I could see negatives, but people should really be happy these things work at all. :D
 

DTR

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There's already a few neutral and negative feedback for the seller claiming the lasers didn't last long. I'm not sure how much more you can squeeze out of them. Seems they already have a short lifespan.
Where did you see that. I reread the entire thread and as far as I see I am the only one that had one die. I killed it by pumping to much voltage into it.
 
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qumefox

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Finally had a chance to meter the ones I got today.

405:
Pen #1: 42mw
Pen #2: 46mw

532:
Pen #1: peaks at 21mw, drops to about 1mw after 45 seconds and doesn't come back until it cools.
Pen #2: peaks at 25mw after a minute and stayed there until I got tired of holding the button down. Fluctuated and mode hopped pretty badly for the first minute.


The 405's are a sweet deal. The 532 pens.. meh.. About average I would say. They are what they are. The greens aren't IR filtered either, so real numbers will be a bit lower. I'll test my 'good' pen again when I get some IR filters in.

I'll try to bring my camera and start tearing apart one of the 405's to torture tomorrow night.
 




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