Well, it seems my 465nm is set up a bit different than your 532nm, hopefully, purposely from J/L.
My laser focus adjuster only has approximately 3/4 of a full turn for it's complete adjustment range; in use, this seems to work just fine, although more turns might give a finer feel for getting the focus just right.
My 10X B.E. is like yours, in that it has 13.5 turns from stop to stop.
With the B.E. on, and the laser focus set to infinity, these are the beam diameter results that I came up with:
@ 0' (0M) = 23mm
@ 6' (2M) = 17mm
@ 9' (3M) = 13mm
(10mm x 4mm w/o B.E.)
@ 12' (4M) = 11mm
@ 21' (7M) = 7mm
@ 30' (9M) = 6mm
(25mm x 8mm w/o B.E.)
@ 50' (15M) = 8mm
In my case, with the B.E. installed, the beam diameter continues to get smaller up to approx. 9M, and then starts to grow again.
Without the B.E., the spot will obviously continue to get larger as the distances increase.
It looks like after about 3~4 meters, you will get a smaller size with the B.E. in place.
I'm sure my results may differ from yours partly because of the difference in beam size and quality between your 532nm and my 465nm multi mode.
Without the B.E. installed, I'm getting the traditional rectangular output that multi modes produce; with the B.E. in place, I get a nice round beam and dot, which suggests to me that with the larger beam diameter that the 465nm produces, the B.E. is clipping the beam.
I haven't done any LPM checking to see if there is much difference at a specified distance with and without the B.E. being used.
Hopefully some of this information is helpful! :yh:
