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FrozenGate by Avery

DPSS blue on DX?

Hahaha, this would be amazing if it works out. I'm still undecided on what I think the laser this thread is about is. No way it's dpss for under $10, probably a 450, like apocalypse said. Maybe they copypasta the specs from a different laser?
 





Even if it's a 450nm that's a pretty damn good price. You can probably ask for a refund if a green or violet turns up. Please don't forget to keep us posted :)
 
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It could be copy-pasta from another laser, they do that a lot.

It's just the current consumption and mention of overheat that caught my attention.

Maybe it is a 'zombie' 445/450 diode, but running that at 3 amps? Perhaps they got the current totally wrong, but then why would it overheat?

Anyway, i'll probably find out in a few weeks and post the results :)


Gabe said:
Genius! Chinese roulette! We find the cheapest mass produced laser we can find, and purchase it. The buyer should have an LPM and maybe even a spectro if it's diode, and whoever guesses closest on how long it lasts, it's power, and spectro would get the rep pool! Also, reps by everyone to the buyer.
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Hehe.. that's actually a pretty cool idea!
I don't have a calibrated lpm at the moment (though it will do relative power), but do have 405 and 445 lasers to compare color against, so if its anything different i'll likely be able to tell. Also, i'll check if it produces 5 dB of sound :D
 
No one honestly ever believed this would be a solid state handheld, did they?

It won't be a 445 at that price either.

Best case, you get a garbage 405.
 
I'm not so sure it isn't a 450nm. DX isn't know to use fake pictures (or at least wasn't, back in the day) and that picture looks like a 450nm to me.

I have a 450nm pen that I paid about $30 on ebay and that was over a year ago. They have cheaper diode sources that are not available to us.
 
Hmm, I thought it was obvious.

I'm 99% sure they're using a new continuous wave diode pumped solid state dye laser technology (not released to the public until now)
tuned to 470nm, with the dye being C-460 or C-480 dissolved in some sort of photopolymer. I mean, just look at the "Wave Band Range", 450~490nm!
After all, DX does deal with the newest cutting edge technology, and for such an exorbitant price you'd better expect something amazing!

JK, nice find OP! :crackup:
 
is there any way we could start a "Chinese roulette" Group that plays this game regularly?

I'll take the next one :D
 
Guess we could have a facebook group for something like this :)

Chances are that people would hit the chinese jackpot quite often though. If you were to buy say 100 random 532nm dpss lasers under $10 each, chances are a few of those would output 100 mW+ at a given temperature. The downside is that others from the same batch probably will not.

As for the chances on a bargain DPSS blue: i don't think it's very likely, but it is possible that some really inefficient modules are dumped on the market since they cannot really compete with direct diode blues apart from applications that require very well defined wavelength and/or low divergence.
 
Benm said:
Guess we could have a facebook group for something like this :)

Chances are that people would hit the chinese jackpot quite often though. If you were to buy say 100 random 532nm dpss lasers under $10 each, chances are a few of those would output 100 mW+ at a given temperature. The downside is that others from the same batch probably will not.

As for the chances on a bargain DPSS blue: i don't think it's very likely, but it is possible that some really inefficient modules are dumped on the market since they cannot really compete with direct diode blues apart from applications that require very well defined wavelength and/or low divergence.
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There are no inefficient module surplus, because there are no 473 modules mass produced...or hardly produced at all, save CNI and JL. Since they are so expensive, if they don't meet spec, the parts are reused, not dumped into the random chinese market. Even the "cheap" 473 styropyro got off DX a while back was a few hundred dollars.
 
Came back to the netherlands after a week, surprise from DX in the mailbox... Sadly, not a very pleasant one.

As I feared it is just a 405 nm laser, and this is marked ob the label as well.

I've just taken a brief look at it, and took some photos. Since it's just a very simple 405 much more investigation doesnt seem worthwhile. The focus cannot be adjusted. They seem to have used a laser module with a boost converter and a solder-bridged push button on that, which seems to be stuck in the front metal piece. This doesn't come apart (easily).

See pictures comparing it to a 8x blue ray diode running 150 mA or so with a properly coated lens. As you can see the beam is pretty horrible, looks like a cheap plastic lens.

Power output is a bit, but not much, under the existing 150 mA bluray, so i'd say in the order of 50 to 80 mW. Wavelength is definitely standard 405nm. Power consumption is 120 mA from the single cell battery (the one i am comparing to is linear driven from 2 cells).

One upside: it does not blow up if you keep it on for 30 seconds, in fact, it doesnt seem to be even warm after 5 minutes.

Guess i will request a refund for false product info (wavelength completely wrong).
 

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Many guessed what would show up. They bank on people paying that little and not having to give the money back since it's so cheap.
 
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I guess so :)

I just wonder why they copy pasted the specs like power consumption and thermal problems from something completely different.

Taking 120 mA from the battery it runs perfectly cool, and it will not burn out in 30 seconds (in fact, i ran it for 30 minutes and it's fine). Too bad the lens quality results in such a bad dot, otherwise it would have been a decent product for the money albeit grossly mislabeled.

I presume people that know nothing about lasers would be happy with it - feels sold (gave it a good whack, nothing budged) and the -dot- appears blue on paper and such, despite the beam being violet.

Still put in an RMA with DX though as it clearly not what they described. They changed the product photos since i bought it, but the wrong specs are still there.
 
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