Iris diaphragm with an variable aperture for fiber collimators series 60FC with an outer diameter Ø 12 mm.
System mount Ø 8 mm
min. aperure Ø 0.8 mm
max. aperture Ø 5 mm
Please note: In case of use with a single mode / PM-fiber, the Gaussian beam from the fiber collimator is truncated by the iris diaphragm or by the pinhole