as title anyone done much with em?
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as title anyone done much with em?
so just me then, well this is going to be a boring thread
i didn't realize they were so cheap. it's tempting to buy a handful and build a couple quads with them.
Quote:
Originally Posted by andy_con
they are indeed, cheap buy 10 and they become even cheaper ;)
Hi,
I bought one, but not tested yet (I mean push it till LED) :).
Price per mW is cheaper than 170mW version, the only difficulty is about the size of the diode itself as you need to machine/find 3.8mm mounts.
They have their case isolated, so nice for a 2x or 4x build with 1x driver only.
For higher power modules, it will be interesting to calculate the financial cost of a (for example ):
5W 638nm red with :
42 HL63603TG and all the mounts, mirrors, lenses etc... (stack of 2 * (3*7))
30 HL63133DG and all the mounts, mirrors, lenses etc... (stack of 2 * (3*5))
The beam size at the output of module (if same lenses are used in the 2 simulations) is more convenient -- "stacking-friendly" with the 170mW ones.
there is a massive cost didfference between this 120mw diode and the 170me diode, builds will be half price. but you just cant achieve as much power, as normal with lasers its power vs cost
i have a mill so machining a holder isnt an issue but they are very small and hard to work with.
optima lens gives a 1.5mm x 3.5mm beam where as a 2mm fl lens gives a nears as dam it 1mm beam by 1.5mm beam
and at distance dots are tiny
I've got 14 of these with Dave's his first 3.8mm diode mounts but there not deep enough for the diode, it needs an extra 1/1.5mm to fit.
When i finished my other 4 modules i'll start with these.
It was indeed boring Andy :)Quote:
Originally Posted by andy_con
Hey - shoot me a reply to the PM I just sent when you can ;)
Which diode are you using the 3.8mm housings with?
Here is a picture of a Nichia diode sitting in the 3.8mm housing:
Attachment 39099
There are slight variations between the TO38 cans between manufacturers, but for one to sit up by more than 1mm intrigues me a little as the lip on the TO38 can is only 1mm thick..
[edit]
OK, it seems the odd one out id the opnext red - its lip is 1.5mm, whereas the housing was designed for 1/1.2mm lip.. So, the diode should only sit out by ~0.5mm, which should be OK since the main point of heat transfer is not via the rear of the diode casing.. Anyway shoot me a PM, lets see what we can arrange
Quote:
Originally Posted by astatic
No problems Dave, this project has a little latency because of my other job.
I want to build 2 reds with 4 of these diodes, i'm going to order one mount at the milling shop for 4 of these baby's.
I've tested one of the diodes and they are tough.
I got 290mw out of one little devil but didn't want to go further to blow it up.
guys, what kind of beam specs are you getting and with what sort of lens?
Just found this thread.. I am interested in these red diodes since they are single mode and will have better beam specs.
As far as the DTR lens are concerned.. which lenses give the best divergence and beam?
I have some G2s from him laying around. If no one else has tried them then I might grab one with the 3 glass element and compare them.
3 element is cheap. grab one and see for yourself
In general, longer FL, bigger initial beam with lower divergence
with these diodes, I am almost sure I will choose a 8mm FL 3 element lens for a multidiode setup