Autofocussing stage provides dynamic performance in extreme environment
Nanomotion has developed a miniature autofocussing stage which can operate under flight conditions for shock and vibration with extreme temperature variation and intense orientation changes.
Nanomotion's direct-drive piezo-ceramic motor technology is said to feature extreme accuracy and precise movement with high resolution and low settling times, coupled with extensive velocity and force dynamics.
The single-axis linear focussing stage and motion system directly drives an optronic device with a mass of around 25 to 35g over 20mm travel to within 2.5µm accuracy. With shock to 40G and vibration to 12G, the stage, which features a preloaded bearing arrangement, is said to achieve the accelerations and settling times required to maintain focussing. The stage mechanics fit into a footprint of less than 65 x 45mm and weighs less than 50g. The device operates over a temperature range of -40 to 50°C.
Proven applications for Nanomotion's piezo-ceramic technology includes non-uniformity correction shutters and variable aperture devices on aeronautical and military instruments as well autofocus stages for target acquisition and FLIR spectroscopy equipment.
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