LazerGuy said:Well, since the module is focusable, it's kinda hard to say. If you want to have the lowest possible divergence, you have to fine tune the modules's focus. The best way to do this is to point it through a mirror, and then, while looking at the dot, adjust the focus. You can get a pretty small number (if you're steady handed), I would say definitley below 0,5 mRad.
PS: welcome to the forum!