Old 10-17-2009, 03:40 PM #1
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Default My first LOC build... Heavy photos

A'ght guys sorry for very intuitive and original title but heck i cannot remember anything right now... I will let my dad's Olympus E500 do the talking.
So, you probably have seen my laser in duracell host, couple o' threads below this one. Well all my lasers so far, including that one, was made outta 16x pioneer diodes, LCC.
Well, after 5 years since my first diode extraction, playing around with bluray and green lasers, I got my hands on 20x LG dvd fryer. With my first LOC!
Well, after prying it out, i had exeptionally difficult time extracting my diode outta the heatsink, because all i had was pliers. Dunno who doesn't like me up there,, but my dad took the saw and triangle file. Just great.
Heatsink itself was from some hell made hard material, unlike common mixtures that are very hard and snap off, this one just bent under the pliers.
After 1 hours of loosing nervers and getting ache in my hands in return, i finally managed to rip the bastard open. And finally saw the LOC diode.
Wasn't what I expected at first, it had the chip die base very large, substituting for half of a can.
And the crystal had very nice gold specular shine... Whatta beauty.
Without waiting to ruin it mechanically, I dropped it in aixiz module, and pressfited it there.
Screwed on the lens, soldered wires to it.

One word of advice to new guys: when soldering wires to the diode, use a tiny screwdriver or a needle, and roll the piece of wire that is going to be soldered, so the wire is curved around straight pin (try remembering antient snake on the wood stick, symbol for health, or medicine, whatever) so you have maximum touching surface for the wire and the pin, that decreases the chances of the wire snapping off exponentially.

So, screwed the back end od the module, soldered on the driver, and conecting it to the negative power terminal, the ring around reflector piece.

Put some super glue to hold everything in place. Also, one more word to the new guys: When you do not have the driver inside the module, but only wires to the diode coming out of back hole, cut a piece of match, stick it into the hole with the wires coming out, and also use the super glue to hold everything in place. that will stop any risk of snapping off the wires, or bending them inside a module. They will firmly be in place, all the tension will stop at the glued and stuck wires.

So, this is how it looked at the beggining:

You can see that there is a red laser in red host, already shown. I asked the friend i gave the laser to, to bring it back so i can give him the focusing ring and dust cap (and open up the back end of the lens a bit more for more power), which i didn't have before.
The module with the driver soldered, middle right, is the one with freshly installed LOC, and the second yellow flashlight is going to be the host.
The blue one will probably come in handy for one of my next bluray builds.


That would be, in order of appearance from left to right:
LCC with intact lens - LCC with lens back opened - LOC with back really opened

Now, some beamshots are in order...

Same order of appearance. Sorry for blurry photo, expo time was little long. We can see that cutting out bigger hole in the lens really helps.
Also removes all artifacts in that 10 or 20 angle from the main beam.

Dot comparison


Visible without LPM that LOC has little more power than LCC.
Also cutting out the back end of the lens brings noticebly more mW.

Well, now to put some final thoughts...
LOC is overpowering LCC, no doubts.
However.. for 20 or 30 % more power, it heats up more than double.
When I powered up the lasers, took the shot, and turned them off, i touched the modules, LCCs were expecably worm and equal. However LOC's temperature is more than double compared to LCC.
Definetly gotta grab hold of some copper, and give that schools CNC some work.

If you made it this far, give some (pozitive) replys whaddaya think


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Old 10-17-2009, 07:37 PM #2
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Default Re: My first LOC build... Heavy photos

You will probably want to add a heatsink to these
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Old 10-17-2009, 07:47 PM #3
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Default Re: My first LOC build... Heavy photos

I cannot see a heatsink oO
You 'd definitely need a heatsink for each one of these 3 beasts
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Old 10-17-2009, 09:25 PM #4
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Default Re: My first LOC build... Heavy photos

Quote:
Originally Posted by Silvershot View Post
I cannot see a heatsink oO
You 'd definitely need a heatsink for each one of these 3 beasts
Yes i know, I am working on it. My school has CNC machine and i already talked to the proffesor in charge for it. I only need to grab hold of crapload of cooper and alluminium, and i will be making custom heatsinks for everyone here, dirt cheap.
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