High stability and performance is achieved using a zero expansion off-axis parabola.
The optics within the instrument are secured by the use of stress-free mounts and are purchased pre-aligned.
The off-axis design produces no central obscuration thereby ensuring efficient transmissions.
Reflective collimators can be used to replicate a target at infinity without parallax.
They can be used to calibrate other optical devices, to check if all elements are aligned on the optical axis, to set elements at proper focus, or to align two or more devices.
The all-reflecting design is achromatic and with aluminium / magnesium fluoride coatings can operate from the UV to the infrared without adjustment.
Each system has an output port datum plane giving a defined distance to the focus.
All reflective collimators provide a 20mm field ensuring full compatibility with standard black bodies.
