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FrozenGate by Avery

New DX Infrared - 2W 808nm IR

rhd

rhd

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Interesting new pointer on DX. Knowing this host fairly well, it's going to be a C-Mount diode. At $200, the math makes sense / adds up, for this to be a legit 2W IR. Of course, that doesn't guarantee that it actually is - but the pricing matches the specs.
 
http://www.dealextreme.com/p/2w-808nm-red-laser-pen-pointer-w-safety-lock-keys-strap-charger-1-x-cr123a-66662
 





Im still a bit worried about noobs who buy it, use it, and then think hey this looks weak is it defect? *looks into the laser* huh my eye starts to tingle and burn and wth is that smudge i see in front of me...... DX is a dangerous place for the unaware...
 
be worried indeed, even 500mW of 808nm is frightening!
 
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Anyone care to do the math?

2w from a cr123??? that'll give u a runtime of a minuet or two :confused:
 
ped:940407 said:
Anyone care to do the math?

2w from a cr123??? that'll give u a runtime of a minuet or two :confused:
Click to expand...

How do you figure?

Assuming 30% or so efficiency (just a ballpark figure), that's like ~7W input into the diode. Say the driver causes some loss too, so maybe 8W out of the batteries. In series, they're ~8V, so that's a simple 1A of current. Assume a CR123 with an actual capacity of 500mAh, and you're looking at 30 minutes of run time to deplete your cells.

That said, I have never understood why anyone cares about runtime when we have rechargeable cells. You know that I have never, ever, not even once, depleted the cells in any laser I've ever owned? I don't buy the "wear and tear on threads" argument against swapping out cells.

Tip: rechargeable cells, can be RECHARGED ;)
 
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^one cr123, not two. It'll use a linear driver and a 2W diode will need just north of 2A.

The run-time might be terrible for a flashlight, but there's no reason to have a laser on that long at a time. Carrying a spare cell or three isn't that hard, either.
 
i also just noticed that lazerer also carries a 2W ir laser!
LZGN - 808nm 2W Focusable NIR Infra Red Laser Pointer
it is also "only" $150...
interesting how a "legit, power guarantee" site can be cheaper than a "lucky draw from a bag" drop-shipper like DX...

EDIT:
these hosts are very similar and even may be the SAME?
maybe they are from the same manufacture...
 
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1000% Sure isn't 2W, 500-800mW Max. CR123 Can't give so Many Amps.
 
Cyparagon said:
The difference is 1mm. I don't think the laser will care.
Click to expand...

True, but the only thing is when you looking for a CR123 battery that many of these batteries are 3 volts, and must be taken into account,
because the laser's operating voltage what I put is 3.7V.
 
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Yeah - this is entirely possible, especially if the laser is running off of a buck driver. At 4.2V (max voltage of a single li-ion), it is much higher than the 2V or so that the IR diode needs. It would probably reduce the input current necessary to like 75% or even 60% of the output current provided to the diode because of such a significantly larger input voltage.
 
eytyxhs said:
Really? How? Give me a Link.
Click to expand...

LZGN - 808nm 2W Focusable NIR Infra Red Laser Pointer
WE TEST EACH LASER WITH METER BEFORE SENDING OUT!! POWER OF ALL LASER IS GUARANTEED WHEN YOU PURCHASE FROM LAZERER !!
Click to expand...
If you want to understand your laser more. LAZERER will provider a power certificate which is unique for you own laser ordered. LAZERER is the first and only company who will offer this service.
Click to expand...

there are a lot of reviews on lazerer's lasers and they were all up to spec
 
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