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My another IR portable build (1W, 1x18650)

Eudaimonium

Eudaimonium

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hugo999999 said:
Eudaimonium suggested me to put two aixiz plastic lenses inside module.

did you just screw two aixiz acrylic lenses into the 9mm modules thread?
nice laser! thanks
Click to expand...
Exactly.
They do far better job than just one lens, they catch a lot more light to transmit, when using only one lens it's really far from the diode and a lot of light does not go though it.

With two lenses, one is very close to the diode and a lot of light goes though.
 





ReNNo

ReNNo

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hugo999999 said:
Eudaimonium suggested me to put two aixiz plastic lenses inside module.

did you just screw two aixiz acrylic lenses into the 9mm modules thread?
nice laser! thanks
Click to expand...

Yes.
First lens is screwed to 1mm (or less) from diode and collects all light.
And second lens focuses light from first lens.
 
siqueirah

siqueirah

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Some day I'll build my own IR laser.
But I need to learn more about it.
A powerful invisible burning laser seems to dangerous to me now =)
 
billg519

billg519

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You can deal with IR safely by having the proper goggles for IR and always using them, even for a "quick test". Most video cams and digicams with preview can see IR quite well. They are handy to help you with lenses and focusing. No need to risk the eyes, especially at multiwatt power levels.
 
Eudaimonium

Eudaimonium

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billg519 said:
You can deal with IR safely by having the proper goggles for IR and always using them, even for a "quick test". Most video cams and digicams with preview can see IR quite well. They are handy to help you with lenses and focusing. No need to risk the eyes, especially at multiwatt power levels.
Click to expand...
Excellent advice Bill!
We're getting there... :)


 
x90z75ek

x90z75ek

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Impressive laser! I've never seen a completely invisible IR laser in real life. Must be pretty cool. Does it burn light colored things?
 
ReNNo

ReNNo

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Yes, with that power you can burn colored things...
But you can't burns something that is extremely white, as white paper.
 
Eudaimonium

Eudaimonium

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ReNNo said:
Yes, with that power you can burn colored things...
But you can't burns something that is extremely white, as white paper.
Click to expand...
Well actually, all it takes is one tiny microscopic bit of dirt or something , and once that's toast, the charred rmains start burning up the paper, starting the process, you can cut a white paper with only one dot on it, no need to draw the line across it.

I'd try burnign up white paper - keep trying, once you catch a piece of dust or dirt, paper is out of luck. Yo maybe even set it on fire with that montruosity.
 
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electros

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Hi I'm very new to lasers and looking to make this my first build as it's exactly what I'm looking for.. a cheap and extremely powerful IR laser. I'm sure I can probably figure out the wiring out by browsing the forum while I wait for the shipping, but what exactly would be the material list for this project?

I'll post what I was able to ascertain from your information so please correct me if I'm wrong anywhere..
AMC7135 1400mA Regulated Led Driver - eBay (item 260599140613 end time Jun-06-10 21:20:49 PDT) - Driver

DealExtreme: $15.89 Ultrafire WF-501B / WF-510B Cree LED Flashlight (CR123A / 18650) - Housing (and battery?)

Standard Aixiz Acrylic Lens 2 pack ! [salens] - $1.09 : StoneTek Electronics, Your Laser Parts Store - Lenses?

Assuming these are correct it seems what I need to know is what module to get, how do I make (or can I buy) the heatsink, and the wiring if you have a diagram or something.. don't want to waste too much of your time.

Also would this all work with any ir diode off ebay thats 1 watt, or do different wavelengths need different components?

Edit: also what was the total cost of the components for this build?
 
ReNNo

ReNNo

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You need 1W IR diode, no matter what wavelength is.

UF host .. here is with cheaper emitter
DealExtreme: $9.90 Ultrafire WF-501B Philips Luxeon K2 Blue LED Flashlight (1*18650/2*CR123A)

18650 battery
https://www.dealextreme.com/details.dx/sku.1213

9mm module (with one lens included)
9mm diode housing with glass lens for red laser or 808 nm laser [OL9mm] - $7.20 : Welcome to O-Like.com, Your source for laser products

2 aixiz plastic lenses
Standard Aixiz Acrylic Lens 2 pack ! [salens] - $1.09 : StoneTek Electronics, Your Laser Parts Store

1.4A AMC7135 driver
AMC7135 1400mA Regulated Led Driver - eBay (item 260599140613 end time Jun-06-10 21:20:49 PDT)

I'd also put LED indicator so you can know when laser is on.
You need any LED (FV less than 4.2V) and resistor to limit current for LED)
And you need heatsink for UF and for this O.like module. You can machine it.

That is pretty much what you need.

One more thing

If you plan to make host case positive, then you don't have to electrically isolate diode from host. But then you cannot use AMC PCB as contact to + pole of battery.

If you plan to make host case negative, then you have to isolate host from diode, and then you can use AMC PCB as plus contact to your battery. (As I did)

So, if you want to isolate module, you should also use thermal tape.
 
Flaminpyro

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Nice build I like the led indacator in front like that, good going +1 for you !
 
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electros

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Thanks a lot for taking the time to give me all that info. I just have 2 additional questions. The only 1 watt ir diodes ive been able to find are these ones on ebay 808nm 1000mw 1W burning IR laser diode. USA 3 day ship - eBay (item 270586581155 end time Jun-09-10 10:56:47 PDT) They say they ideally require 1a to 1.3a, would the 1.4a driver board be too much for these diodes or should it be fine? I've been unable to track down a higher wavelength diode like yours

Also from a lot of the other posts I've read focusing seems to be a major issue with these, but from your youtube link yours came out to be what I'd expect of 1 watt focused laser.. this is a total noob question but assuming I replicated your build with the above linked diode would it come out just as powerful?

I've been trying my best to research on these forums but the information is overwhelming and sometimes conflicting, which is why I pretty much just want to copy your build
ReNNo said:
You need 1W IR diode, no matter what wavelength is.

UF host .. here is with cheaper emitter
DealExtreme: $9.90 Ultrafire WF-501B Philips Luxeon K2 Blue LED Flashlight (1*18650/2*CR123A)

18650 battery
https://www.dealextreme.com/details.dx/sku.1213

9mm module (with one lens included)
9mm diode housing with glass lens for red laser or 808 nm laser [OL9mm] - $7.20 : Welcome to O-Like.com, Your source for laser products

2 aixiz plastic lenses
Standard Aixiz Acrylic Lens 2 pack ! [salens] - $1.09 : StoneTek Electronics, Your Laser Parts Store

1.4A AMC7135 driver
AMC7135 1400mA Regulated Led Driver - eBay (item 260599140613 end time Jun-06-10 21:20:49 PDT)

I'd also put LED indicator so you can know when laser is on.
You need any LED (FV less than 4.2V) and resistor to limit current for LED)
And you need heatsink for UF and for this O.like module. You can machine it.

That is pretty much what you need.

One more thing

If you plan to make host case positive, then you don't have to electrically isolate diode from host. But then you cannot use AMC PCB as contact to + pole of battery.

If you plan to make host case negative, then you have to isolate host from diode, and then you can use AMC PCB as plus contact to your battery. (As I did)

So, if you want to isolate module, you should also use thermal tape.
Click to expand...
 
Last edited:
ReNNo

ReNNo

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All enthusiasts here push their diodes on higher currents than recommended currents.
Diode should work fine on 1.4A (even higher current when IR diode is connected to AMC) and give more light.
You only need to take care about duty cycle. Give diode some time to cool down.

Setting the higher current than normal did not result in diode death still, it's kickin' ass even now :)
 
Fivos

Fivos

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what lens did you use because I used for mine an ar coated 650nm laser lens and it burn it.
 
ReNNo

ReNNo

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For burning at longer distances I use aixiz glass lens (650nm coated) and for better burning at shorter distances I use two plastic lenses.
 
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