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Old 05-20-2009, 06:16 PM #1
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Default Kryton c-mount IR

I have mostly been a lurker on the forums but I wanted to contribute with these pictures and info with the group. I bought a Kryton from Kenom (fast shipping and good quality) and proceeded to build a IR c-mount . I made the combo heat sink and driver mount from aluminum and it is sort of small so duty cycle is short .

I built the driver from a schematic that Benm posted a link to.
discussion here :
http://laserpointerforums.com/laser_...highlight=Benm

actual link picture of schematic :
http://www.instructables.com/files/d...TP5.MEDIUM.jpg

I did a little testing and it seemed to work just fine .I set the driver up to drive 1.2 amps at 1.8 volts into the 808nm c-mount .Power comes from two cr123ís so the battery life is sort of short .
The diode I used come from heruursciences .It was one of the C-mount Lot of 20 packages . Out of the 20 diodes I received only one did not work - not bad. The diode I used had a fac on it and works great .
heruursciences link:
http://laserpointerforums.com/laser_...highlight=ebay

I realize the optics are not correct and still need work but this thing is a blast . So far paper ,plastic, tape and cardboard have all fallen prey to the c-mount Kryton.I have been very pleased and the results have been fantastic . I hope someone will benefit from this information

Terry :-)

sorry for the last blurry pic new camera
Attached Thumbnails
Kryton c-mount IR-666a.jpg   Kryton c-mount IR-222a.jpg   Kryton c-mount IR-999a.jpg  


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Old 05-20-2009, 06:39 PM #2
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Very nice. Looks like you used a different setup than was originally planned but it's still a great unit.
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Old 05-20-2009, 07:06 PM #3
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Nice looking laser do you know the power of the diode
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Old 05-20-2009, 07:18 PM #4
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Hi no I am sorry I do not have any way to measure it yet . I hope to get a meter soon but 1.8volts x 1.2amps = 2.16 watts . I realize that is not the same thing but ballpark figure is 1 +watts . The diode itself is a unknown it was one of twenty I bought from heruursciences.

Terry
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Old 05-20-2009, 07:27 PM #5
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well I do sell laser power meters. If your running that at 1.2A then your in the vascinity of 1Watt. I know that most of these c-mounts are pretty linear with respect to power in/out.
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Old 05-20-2009, 07:37 PM #6
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Here is a end view that shows the diode and driver in the Kryton



Terry
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Old 05-21-2009, 12:03 AM #7
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One more from a different angle .
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Old 05-21-2009, 02:32 AM #8
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Can you build me one?

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Old 05-21-2009, 02:54 AM #9
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Aw damn, I though I was the only one who though of this.... Either ways, congrats for making it work Nice to know there's someone who thinks alike(me)...

Anyhoo, I had Jayrob machine me this 2 months back. Unfortunately, he doesn't/didn't have the right tools to "mass" produce these so it's been in limbo since.

Mark- Look forward to seeing these sometime. I have a few more bugs to work out before I send the design off to be fabricated.





For the curious, the driver is a generic flashlight driver from DX.
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Old 05-21-2009, 09:06 AM #10
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Nice work Gimp! I guess I'm gonna have to break down and make some of these.

Chuck
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Old 05-21-2009, 11:53 AM #11
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Quote:
Originally Posted by rocketparrotlet View Post
Can you build me one?

-Mark
Hi Mark
Sorry Its the only Kryton that I have . I wish I could help you but I work on many projects and it difficult for me to get free time to devote to it .

Terry :-)
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Old 05-21-2009, 12:13 PM #12
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Quote:
Originally Posted by digital_blue View Post
Aw damn, I though I was the only one who though of this.... Either ways, congrats for making it work Nice to know there's someone who thinks alike(me)...

Anyhoo, I had Jayrob machine me this 2 months back. Unfortunately, he doesn't/didn't have the right tools to "mass" produce these so it's been in limbo since.

Mark- Look forward to seeing these sometime. I have a few more bugs to work out before I send the design off to be fabricated.

For the curious, the driver is a generic flashlight driver from DX.
Hey nice work it looks like you are almost there . I really like that design and how it came together .I had thought about going the flashlight driver method but I wanted something I could easily adjust .Just by changing one resistor I can adjust the amperage on the diode . This driver is very simple to build and seems to be more efficient than the lm317 driver .This driver could be made much smaller and so far seems very robust. Good Luck with your project :-)
Oh and keep me posted on your progress

Terry
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Old 05-21-2009, 12:23 PM #13
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Quote:
Originally Posted by CRFultz View Post
Nice work Gimp! I guess I'm gonna have to break down and make some of these.

Chuck
Hi Chuck

Itís a project you would not regret .I have really enjoyed mine and there is nothing like it for lighting fuses ,cigarettes and burning plastic . It is defiantly a project worth doing :-)


Terry
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Old 05-21-2009, 12:59 PM #14
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Quote:
Originally Posted by Gimp View Post
Hey nice work it looks like you are almost there . I really like that design and how it came together .I had thought about going the flashlight driver method but I wanted something I could easily adjust .Just by changing one resistor I can adjust the amperage on the diode . This driver is very simple to build and seems to be more efficient than the lm317 driver .This driver could be made much smaller and so far seems very robust. Good Luck with your project :-)
Oh and keep me posted on your progress

Terry

A 1 watt C-mount takes a little over an amp, a 2 watt C-mount takes a little over 2 amps and so on. I figured it would be simpler to use a flashlight driver since they are fixed and the current can be doubled by stacking/paralleling them. Credits go to BillG519 for even putting the idea in my head
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Old 05-21-2009, 01:14 PM #15
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Quote:
Originally Posted by digital_blue View Post
A 1 watt C-mount takes a little over an amp, a 2 watt C-mount takes a little over 2 amps and so on. I figured it would be simpler to use a flashlight driver since they are fixed and the current can be doubled by stacking/paralleling them. Credits go to BillG519 for even putting the idea in my head
I remember reading that post where BillG519 built that really nice c-mount laser and it to stayed on my mind . Then I saw Kenom wanting to sell that Kryton so I grabbed it up . The flashlight driver is really a great idea .
I have a few more ideas to try but I do not have a lot of spare time to try them .
Terry :-)
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Old 05-21-2009, 06:08 PM #16
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Can you focalize to infinite with your optics ? can you take a beamshot at night with a camera (can shot the IR)

Nice build too !!
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