Both. The idea is that the air movement should be contained and away from the optics. It sort of works but now I have thought up an allot better way of protecting the optics from dust and cr@p. I'll post pictures when its done, I am waiting on a 6x sled to replace the phr diode.
Now I'm running with a 6x blu-ray and a 650-G-1 lens for the red LCC. The output power is CRAZY
As I mentioned earlier I have made a better solution to keep the green laser cool, while not contaminating the optics with dust:
Dense foam cut to tightly fill the gap between the heat sink and the sled:
I filled all the little holes in the sled with hot glue:
I cut out the shape of the sled onto a 2mm thick piece of plastic:
And cut out some space to fit the dichro:
I also sanded the rim of the sled to make it perfectly flat so there are no gaps, and screwed on the top plate tight at the holes I made in the sled with a nut on the other side:
All I have to do now is mount a window at the aperture and then it should will be totally dust proof! I found something in the 6x sled that might be a perfect window with minimum loss...
I have also made a high capacity battery back!
3x 18650 250mAh with a combined total voltage of 12.6V
There is a 2A fuse with holder, on-off switch and low voltage/power on indicator. The low voltage circuit is based on zener diodes will indicate orange light when the voltage goes down to and below 9.1V. The LED is bi-colour, so I used the other die to indicate green when the power is on.
Mannn that has to be the sickest laser I have seen in a while. It makes me really want to build a white fusion, but I am daunted by the fact that I'll probably mess it up horribly. I suck at assembling precision things like this. Great job!