- Sep 20, 2013
You can see from your first photo that the lens is closer to the side facing the camera. This is the correct way. If you cannot screw the lens in far enough it will never collimate because the FL of these lenses is very short. Less than 3 mm. Take the focus ring off and screw it in further, but don't bottom it out. At some point a little over 2 mm it will collimate the laser diode.