• Large beam diameters: Focal lengths up to 200 mm
• Choice of monochromats or achromats
• Various AR coatings for UV - IR
• Choice of fiber receptacles: FC PC or FC APC (standard), many others available
• Integrated TILT adjustment to prevent aberrations from vignetting or clipping
• Front connector accepts attachment optics

Adjustment of focus and TILT

The distance between fiber end-face and collimating optics is adjusted by means of an eccentric key. The lens does not rotate when adjusting the focus. The final focus setting is locked by means of two radially arranged clamping screws. Additionally attachment optics can be mounted to the front of the collimator.
Additionally, the collimator has an integrated TILT adjustment for aligning the beam axis to the mechanical axis. This prevents vignetting of the collimated beam as well as diffraction arising from the clipped beam.

Material

The fiber collimators are made of nickel silver and black anodized aluminum (standard) or in amagnetic titanium. In case of titanium, the relative permeability is near 1 (µr=1.00005) making it almost transparent to magnetic fields. The linear coefficient of thermal expansion is close to that of the optics so that a thermal stability over a larger temperature range can be expected.

Mounting

All Fiber Collimators 60FC-T with diameter Ø25 mm can be placed in a standard mirror mount. 60FC-T with a larger diameter posses a flange for low-strain mounting e.g. using the clamp collars series CC.