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Old 07-18-2011, 07:45 PM #1
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Default New DX Infrared - 2W 808nm IR

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


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Old 07-18-2011, 07:58 PM #2
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Default Re: New DX Infrared - 2W 808nm IR

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...
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Old 07-20-2011, 08:22 AM #3
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Default Re: New DX Infrared - 2W 808nm IR

be worried indeed, even 500mW of 808nm is frightening!
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Old 07-20-2011, 04:45 PM #4
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Default Re: New DX Infrared - 2W 808nm IR

Anyone care to do the math?

2w from a cr123??? that'll give u a runtime of a minuet or two
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Old 07-20-2011, 05:02 PM #5
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Default Re: New DX Infrared - 2W 808nm IR

20 minutes at least - could be worse.

*cough torch cough*
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Old 07-20-2011, 05:41 PM #6
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Default

Quote:
Originally Posted by ped:940407
Anyone care to do the math?

2w from a cr123??? that'll give u a runtime of a minuet or two
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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Old 07-20-2011, 06:03 PM #7
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Default Re: New DX Infrared - 2W 808nm IR

^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.
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Old 09-01-2011, 04:42 AM #8
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Default Re: New DX Infrared - 2W 808nm IR

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...

Last edited by blue bumblebee; 09-01-2011 at 04:43 AM.
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Old 09-01-2011, 09:01 AM #9
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Default Re: New DX Infrared - 2W 808nm IR

1000% Sure isn't 2W, 500-800mW Max. CR123 Can't give so Many Amps.
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Old 09-01-2011, 04:52 PM #10
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Default Re: New DX Infrared - 2W 808nm IR

yeah, well lazerer DOES give guarantee
and you can ask max to measure it beforehand
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Old 09-01-2011, 04:55 PM #11
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Default Re: New DX Infrared - 2W 808nm IR

Quote:
Originally Posted by blue bumblebee View Post
yeah, well lazerer DOES give guarantee
and you can ask max to measure it beforehand
Really? How? Give me a Link.
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Old 09-01-2011, 06:35 PM #12
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Default Re: New DX Infrared - 2W 808nm IR

^ And you can also Purchase a power certificate for $2 aditional

LZGN - 808nm 2W Focusable NIR Infra Red Laser Pointer

This one obviously does not work with a CR123, but with an 16340

Edit: But at this moment Out Of Stock

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Old 09-01-2011, 07:10 PM #13
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Default Re: New DX Infrared - 2W 808nm IR

Quote:
Originally Posted by piferal View Post
This one obviously does not work with a CR123, but with an 16340
The difference is 1mm. I don't think the laser will care.
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Old 09-01-2011, 07:25 PM #14
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Default Re: New DX Infrared - 2W 808nm IR

Quote:
Originally Posted by Cyparagon View Post
The difference is 1mm. I don't think the laser will care.
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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Old 09-01-2011, 11:08 PM #15
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Default Re: New DX Infrared - 2W 808nm IR

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.
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Old 09-02-2011, 05:14 AM #16
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Default Re: New DX Infrared - 2W 808nm IR

Quote:
Originally Posted by eytyxhs View Post
Really? How? Give me a Link.
LZGN - 808nm 2W Focusable NIR Infra Red Laser Pointer
Quote:
WE TEST EACH LASER WITH METER BEFORE SENDING OUT!! POWER OF ALL LASER IS GUARANTEED WHEN YOU PURCHASE FROM LAZERER !!
Quote:
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.
there are a lot of reviews on lazerer's lasers and they were all up to spec

Last edited by blue bumblebee; 09-02-2011 at 05:14 AM.
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