I was wondering if anyone got some details about the lens system used with the SM2 laser head.
Is it a 3EL, G2, G7, G8 or maybe something else? Are there any details about it available?
Numerical aperture, EFL, transmittance, back focal length, spot size, …?
Is it possible to change the attached lens with some M9x0.5 lens? Like this one for example?