The measurement comes just after the +cylinder. The 5mm is the slow axis. Note: this is just a rough measurement with a scale. It may be a bit smaller when properly measured.What is the Aperture beam sizes LS of your setup.? Also the 4x5mm size.... what is the distance thats at.?
Extrapolating from your measurement with 3 and 4mm lenses I would say the stock lens is about 6mm FL
Aprox 20mm from the stock lens.How far away did you have the C-lenses from the diode.?
Aprox 100mm Fl. Any like lenses should work. I had these already mounted up for use as spatial filter. The spot can be focused to a perfect line with hardly any artifacts around it.Interesting results with the Stock lens LS. What are the 2 positive lenses you used if you dont mind me asking. I think i have a few different + lenses here to play with too.. What is the FL of the + lenses you are using.?
Does the Beam/Dot slightly get deformed with the + lenses.?
In my set-up the spot is really clean. No need for filtering.The dots can be very easy spatial filtered too and it appears you wont be loosing any/much power at all to clean it up.