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The suggested distance between the 3X vs the 6X lens set is only 2mm, The suggested distance between the 3X is 25mm and the suggested distance between the 6X is 27mm but the 2X is the same as the 3X at 25mm......Mateusz say to me the 6x lenses need a brass assembly with larger space between the 2 lens (than 2x/3x). I wait for it.
I want to put the brass cylindrical lens assembly inside à 3D printed tube, the tube attached on my NUBM44 laser.
Also I have two binoculars lens, one extracted from small binoculars and one big extracted from astronomical binoculars.
I want to print beam expanders to attach on this NUBM44 portable laser
Just FYI the input lens in a beam expander is different then most all lenses found in binoculars, The input lens in a BE is a plano concave like this.....