ReNNo
0
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- Mar 27, 2009
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This is my second IR build. This time I aimed for the smallest possible portable IR laser.
I decided to put everything in cheap UF WF-501B host. What I like about this host is price, good quality, good looking, easy to make heatsink and lot of space
, the best you can get for its price.
I used unknown wavelength 1W 9mm IR diode. I only know that wavelength is longer than 808nm. Here is the thread where I asked if someone can disclose what wavelength this diode is:
http://laserpointerforums.com/f40/strange-green-light-ir-diode-51053.html
As driver I used AMC7135 1.4A. That allowed me to use only one 18650 battery instead of using 2x18650 and LM350/LM317. (As I did in first IR portable build)
Here are some pictures of heatsink I used :
Click on the picture to see it in full size...
Yes, HS look unclean but this HS is made from molten aluminium. (The cheapest and the only way to make heatsink at the moment)
I know you are wondering what's for is that hole on heatsink.
Because this is totally invisible IR laser I had to put LED indicator to know when laser is ON/OFF. I had to put LED on front of HS because there was no space anywhere else on host. But at the end I'm satisfied with indicator because there are no wires inside of host, everything is placed on heatsink.
In order to cool down AMC7135 driver, I thermaltaped it to module. Every AMC chip is in good thermal contact with module and electrically isolated.
Also, AMC 7135 PCB makes job easier because it can be used as a battery contact.
OK, don't want to bombard you with words, pictures can tell much more in less space (So I'll bombard you with pictures)
Click on picture to see it in full size:
Eudaimonium suggested to me to put two aixiz plastic lenses inside module.
I did, and it works the best.
There was whole thread where we were discussing about this, but nothing works better than 2 plastic lenses. The easiest way is the best and the cheapest (1USD for 2 lenses)
To collect as much light as possible I removed lens retainer because it blocks some light.
Also, added one more lens holder without lens inside so I can adjust focus and use dust cap.
I compared this laser with my old 808nm IR laser (1.25A) and I must say that this laser burns much better. Maybe additional 150mA makes it stronger, or it's easier to burn with this wavelength, or maybe diodes chip is smaller that means smaller dot for burning.
I don't know....but I can light up match on its center, and with 808nm I couldn't.
And size is just great compared with my old IR laser
And here is video that shows everything...
YouTube - Homemade 1W IR laser
Any questions or suggestion, just ask.
I decided to put everything in cheap UF WF-501B host. What I like about this host is price, good quality, good looking, easy to make heatsink and lot of space
, the best you can get for its price.I used unknown wavelength 1W 9mm IR diode. I only know that wavelength is longer than 808nm. Here is the thread where I asked if someone can disclose what wavelength this diode is:
http://laserpointerforums.com/f40/strange-green-light-ir-diode-51053.html
As driver I used AMC7135 1.4A. That allowed me to use only one 18650 battery instead of using 2x18650 and LM350/LM317. (As I did in first IR portable build)
Here are some pictures of heatsink I used :
Click on the picture to see it in full size...
Yes, HS look unclean but this HS is made from molten aluminium. (The cheapest and the only way to make heatsink at the moment)
I know you are wondering what's for is that hole on heatsink.
Because this is totally invisible IR laser I had to put LED indicator to know when laser is ON/OFF. I had to put LED on front of HS because there was no space anywhere else on host. But at the end I'm satisfied with indicator because there are no wires inside of host, everything is placed on heatsink.
In order to cool down AMC7135 driver, I thermaltaped it to module. Every AMC chip is in good thermal contact with module and electrically isolated.
Also, AMC 7135 PCB makes job easier because it can be used as a battery contact.
OK, don't want to bombard you with words, pictures can tell much more in less space
(So I'll bombard you with pictures) Click on picture to see it in full size:
Eudaimonium suggested to me to put two aixiz plastic lenses inside module.
I did, and it works the best.
There was whole thread where we were discussing about this, but nothing works better than 2 plastic lenses. The easiest way is the best and the cheapest (1USD for 2 lenses)
To collect as much light as possible I removed lens retainer because it blocks some light.
Also, added one more lens holder without lens inside so I can adjust focus and use dust cap.
I compared this laser with my old 808nm IR laser (1.25A) and I must say that this laser burns much better. Maybe additional 150mA makes it stronger, or it's easier to burn with this wavelength, or maybe diodes chip is smaller that means smaller dot for burning.
I don't know....but I can light up match on its center, and with 808nm I couldn't.
And size is just great compared with my old IR laser
And here is video that shows everything...
YouTube - Homemade 1W IR laser
Any questions or suggestion, just ask.
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