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FrozenGate by Avery

OPT Lasers Cylindric lenses - NUBM44 beam correction tests

Hurry said:
I using nubm44, driver 4.5A and cylindrical lens 3x purchased by opt laser.

At 2m the beam spot is about 7mm, but it have lost power, without lens the beam bigger but much powerful.

In your video you burn at 16 feet (5m), how?
Where can I wrong?
Click to expand...
If you don't mind me asking, where are you from ?
 





Hurry said:
I'm sorry for my bad english, but i dont understand your question
It is important where i come from?
Click to expand...
The question is where do you live, And no it's not important where you come from, It's just what people do to get to know one another........
 
If you wear OD+5 glasses made for the wavelength you are working with you can look at the spot on wood from 1 meter away no problem.

HOWEVER IF YOUR EYES HURT OR YOU ARE NOT COMFORTABLE THEN STOP!

I have looked at the spot from 12 watts of 445nm standing 2 feet away wearing my OD+6 Glasses from Survival CLICK HERE
http://www.survivallaserusa.com/Safety_Goggles/cat1667093_1527285.aspx

If you do not test your lenses with your diode running at full power you will not get the full size spot.

More bars light up as the power is increased.

Here is a raw diode output.

 
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RedCowboy said:
If you do not test your lenses with your diode running at full power you will not get the full size spot.

More bars light up as the power is increased.

Here is a raw diode output.
Click to expand...

Good demonstration indeed.

With these multimode diodes the output pattern will change with how hard you drive them, and it might be a reason not to go for maximum raw power output as the divergence will degrade.

It also depends on temperature though, so for handheld units that lack huge heatsinks this might be somehting to consider: going for maximum power will degrade both divergence and diode life, and may not be worth it for the difference in brightness.

Another thing is that beam specs might be worse than claimed in the datasheets, as those figures are often claimed at a certain power level, certainly not when overdriving diodes like many people are.
 
Did somebody say hand held laser heat sink ?

11774-100-6252.jpg

11773-100-6251.jpg
 
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No this model has only white rim.

Yesterday we received the package with our new 6x cylindrical lens. Soon we will wrote about it.
 
Tomorrows System said:
No this model has only white rim.

Yesterday we received the package with our new 6x cylindrical lens. Soon we will wrote about it.
Click to expand...
Oh now you tell me after I just bought the 3x pair ! lol

I'm trying to correct the output of the NUBM44 diode, Would the 6X pair be better for that then the 3X pair ???
 
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Tomorrows System said:
No this model has only white rim.

Yesterday we received the package with our new 6x cylindrical lens. Soon we will wrote about it.
Click to expand...

I will be interested in these, I expect they will be physically larger than the LSP lenses I have been using, this could accommodate some of the better focused GBall diodes as well as can/window diodes with G7 and 3 element primary lenses.

I would love to do some testing and will be buying a pair when you have them for sale.
 
Accutronitis said:
Oh now you tell me after I just bought the 3x pair ! lol

I'm trying to correct the output of the NUBM44 diode, Would the 6X pair be better for that then the 3X pair ???
Click to expand...

It depands on the lens used mostly. G2+ 6X should work nice I think. But we need to do more testing.
 
I think we did an offtop here :)
It depands on what beam you need at the output. Because at long distance g2+6x will be better because smaller, but how about close distance - I do not know yet. Soon we will test.
 
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