labby heatsinks-what features would you want?

[MisterWilling]

Well I need more money to fund my scanner so we can work out some new pricing arrangements if needed to keep having me run these.

Yes m9x.5 is the threads on a standard Aixiz housing. Press fit is a good idea for good efficiency, one problem with it though is the heatsink can't extend any further then where you mount the diode. Its hard to place the diode into the center of the heat-sink because if you do it can be a challenge to mount the diode. Included is a picture in paint to desribe what I mean

I am also working on a very small heatsink .5"x.5"x.5" that has direct press fit and is tapped for a lens housing. It is designed to be mounted onto a TEC as there is no room for any heat dissapation. I have some beta versions I made out of copper that I'm mounting 8x diodes in and am going to combine the two beams with a PBS.

[ndrew2505]

If you could figure out XYZ adjustments that would be golden and allow for adjustment without using extra mirrors.

could you elaborate a little bit?

Room for a diode driver (flexmod) by either a compartment or at least tapped holes in the right places

would a flat top wide enough and tapped for a flexmod work? as far as the lasorb. if you use just the head of the aixiz ad bore out the back of the HS, would that work? i dont really like using the whole module anyway.

Well I need more money to fund my scanner so we can work out some new pricing arrangements if needed to keep having me run these.

Yes m9x.5 is the threads on a standard Aixiz housing. Press fit is a good idea for good efficiency, one problem with it though is the heatsink can't extend any further then where you mount the diode. Its hard to place the diode into the center of the heat-sink because if you do it can be a challenge to mount the diode. Included is a picture in paint to desribe what I mean

I am also working on a very small heatsink .5"x.5"x.5" that has direct press fit and is tapped for a lens housing. It is designed to be mounted onto a TEC as there is no room for any heat dissapation. I have some beta versions I made out of copper that I'm mounting 8x diodes in and am going to combine the two beams with a PBS.

i like the direct press for maximum heatsinking but it puts a damper on things if you need to change the diode b/c you'd have to unscrew the block before changing the diodes. with an aixiz module you can just switch the module out and keep scanning..

[MisterWilling]

You could mount the flexmod directly with a flat surface and tapped hole to the HS, but according to DR Lava it needs to be isolated from the module. This won't be a problem with a blu-ray but with a red diode or green you will have to use the isolating thermal pad and plastic washer that comes with the flexmod to make sure it is eletrically isolated from the diode.

And yes I would also make some HS's with a larger counterbore in the back end to allow for a lasorb mounted to the diode to fit.

[sugeek]

thanks adam! ive got dave looking into getting me the drawings for the scanpro blocks. just waiting on him to send me an email when he gets home.

p.s. what kind of coding do you do?

PM me and let me know your needs, so to keep the thread on track.

-Adam

[ndrew2505]

You could mount the flexmod directly with a flat surface and tapped hole to the HS, but according to DR Lava it needs to be isolated from the module. This won't be a problem with a blu-ray but with a red diode or green you will have to use the isolating thermal pad and plastic washer that comes with the flexmod to make sure it is eletrically isolated from the diode.

And yes I would also make some HS's with a larger counterbore in the back end to allow for a lasorb mounted to the diode to fit.

as far as mounting flexmods to the HS...to isolate you could just use nylon screws/washers with a somekind of small spacer that doesnt conduct electricity.

[MisterWilling]

Both of my flexmods have come with a thermally conductive pad for the heatsink and a plastic bushing, so everything you need to accomplish this.

[sugeek]

could you elaborate a little bit?


would a flat top wide enough and tapped for a flexmod work? as far as the lasorb. if you use just the head of the aixiz ad bore out the back of the HS, would that work? i dont really like using the whole module anyway.



i like the direct press for maximum heatsinking but it puts a damper on things if you need to change the diode b/c you'd have to unscrew the block before changing the diodes. with an aixiz module you can just switch the module out and keep scanning..

I used just the front for my crappy hand made chilling blocks, but I like the direct press idea better... Here is a thread with a bunch of lasorb stuff and a link to the data sheets: http://www.photonlexicon.com/forums/...ead.php?t=8658 , datasheets http://lasorb.com/07_lasorb-approach.htm#datasheets

As noted in the thread they will be coming out with a SMD eventually, but in your designs noted if there was room in that aluminum filler block it could go in there or even on the back I think 6" maximum from the diode and the lasorb was noted somewhere by Bill (so not a big deal solder it to the leads outside worst comes to worst).

-Adam

[ndrew2505]

from the data sheet the lasorb is 10.4mm wide so if its drilled for an aixiz if can fit in the cavity left from leaving the back of the module off. direct press would be another matter though.

@misterwilling- if the diode is recessed and direct fit like you mentioned how would people be able to press diodes into it? youd have to make a special diode press wouldnt you?(depending on how deep its set in) i want to make it usable for everyone so atm the direct press isnt seeming as good as i though originally thought. not to mention soldering the lasorb to the diode pins would be a pain in or out of the direct press sinks b/c the lasorb is bigger so you couldnt find a way to press the diode once the lasorb was connected..

[tocket]

How about, instead of direct pressing, you secure the diode with a threaded retainer ring that you screw in behind the diode? I think that would really be optimal. I'd definitely be interested in such a diode mount as it allows you to easily change the diode without damaging it.

[CRFultz]

You could consider a cutout like Sugeek posted.
I milled the back of these to fit a flexmod mounted on nylon standoffs.
There is a small aluminum cover that encloses it.
The notch at the bottom front is for the TEC wires.
The complete block mounts on a delrin base to isolate it. I didn't feel fins would be necessary but there's room for them. They ad alot of machine time to it.
I made three of these and then shelfed it for a different dual setup.

Chuck