Opto 170mW green laser quick video

Opto 170mW green laser quick video & 6 balloon pop

Using my low quality built in web cam I was playing around and captured an average video.

http://www.youtube.com/watch?v=k_cuOQTZkL0

This is a 6 balloon pop with the same laser:

http://www.youtube.com/watch?v=AYZlWftNJro

I have two of these lasers now and they are both fantastic! one is at 156mW the other is 165mW (tested w/ regular alkalines) With 1.7v Lithiums I am probably gaining about +/- 10mW. Anyway I was just curing some boredom at home.

-T

Opto 170mW green laser quick video & 6 balloon pop

Nice video, especially the second. :gj:

Where did you buy it?

.3lite said:

Where did you buy it?

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Opto= www.optotronics.com

.3lite said:

Where did you buy it?

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Hey, i bought the laser at Optotronics: Here is the link: http://www.optotronics.com/proddetail.php?prod=glp-150

One more thing, opto says, that these lasers have pump diode of about 1W, can you check current it takes from batteries?

bring my question up.

.3lite said:

One more thing, opto says, that these lasers have pump diode of about 1W, can you check current it takes from batteries?

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Hi .3lite......

I do not have anything to check the current draw from this laser with. I can email Jack, CEO of Optotronics and ask him, he would know. Sorry but I just have a standard volt meter to check battery voltages etc. If I had to guess I would say 350ma...? I'll see what I can find out and let you know.

-Todd

It says 1W LD, so I believe above 1A.

.3lite said:

It says 1W LD, so I believe above 1A.

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I don't have the spec sheet on the 1W diode used in these as I do with the RPL, nor do I know who manufactures the 1W IR diode used in the 100, 120 and +150mw pen lasers. I also don't know at what level the diode is driven, it may only be driven at 50-60% of it's rated value for all I know.
I would bet the current be more in the 350mA to 500mA range, there is no way the current is 1 Amp, if that were the case, the AAA batteries would last only a minute or so, maybe even less as a triple A battery is not designed for sourcing 1 Amp of current, A 1 amp draw on a triple A would drop the 1.5v own to I bet less than a volt almost instantly.
Heck, "C" cell alkalines can are not even designed for sourcing an amp of current.

Well, the treshhold current for 1W LD is about 300mA, and yes, using AAA accumulators you can easily draw 1A from them (mostly, each of them have 1800-2000mAh which means you can draw 1A for 1.8h to 2.0h).

.3lite said:

Well, the treshhold current for 1W LD is about 300mA, and yes, using AAA accumulators you can easily draw 1A from them (mostly, each of them have 1800-2000mAh which means you can draw 1A for 1.8h to 2.0h).

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Actually the capacity of alkaline AAA batteries is 1000mAh to 1500mAh at most and this does not mean they can handle 1000mA for 1 hour, it just won't happen as they are not designed for hgh current. What it means is that they may be able to supply 50-100mA for 10 to 20 hours.
Here's a link to the Duracell AAA alkaline spec
http://www.duracell.com/oem/Pdf/new/MX2400_US_UL.pdf

On page 2 at the bottom left plot it shows typical delivered capacity vs. power drain.
There is also a plot on this page named typical service hours vs. power drain. By looking at this plot and assuming a 350mw draw (just for instance), that would mean a power draw on the cell of about 500mw (1.5v times the 350ma current). I you go along the x-axis to 500mw and interpolate service hours, it will be 1 to 1.5 hours depending on the minimum voltage required for the device. Most devices need more than 1.1V, so the service life would be even shorter; however if this 350mA draw is used for short periods at a time (say less than a minute or so) rather than 1 hour straight, the battery life will be more than the 1.5 hours and could be 2 hours or more.

Of course, normal alkalines batteries can't handle such a current drain. But I was speaking about accumulators (AAA), and with that dute cycle (100:20) 1A wouldn't be a problem.

aaa nimh are ok?

.3lite said:

Of course, normal alkalines batteries can't handle such a current drain. But I was speaking about accumulators (AAA), and with that dute cycle (100:20) 1A wouldn't be a problem.

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Don't call it accumulators, just say rechargeables

alkaline AAA 1.5V battery = high capacity, high internal resistance, high voltage sag under load, high capacity loss with increasing load power, small power to energy density ratio, so we can't use it in high drain aplications... As bootleg2go said, it's not designed to work with currents higher than 350 mA.

AAA rechargeable 1.2V Ni-MH cell = low capacity, low internal resistance, small voltage sag under load, low capacity loss with increasing load power, high power to energy density ratio, it likes high drain applications and easily can handle 1A of load current.

bootleg2go, are your premium laser pens stronger on rechargeables or on alkalines?

Windforce said:

bootleg2go, are your premium laser pens stronger on rechargeables or on alkalines?

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Or on lithiums?