Aerotech’s ANT-20G goniometer stages provide a compact, high speed and high throughput solution for single or multi-axis angular positioning and alignment applications where free access is required at the central point of rotation. Aimed at the optical element industry and also suited to large professional scale professional laser and X-ray diffractometry systems, the range features a unique curvilinear direct-drive brushless servo motor that provides cog-free smoothness, solid in-position stability and zero backlash performance.
The patented motor design combines with high precision angular bearings specifications, a high resolution linear encoder and a controller based multiplier system to provide a calibrated positioning accuracy to +/- 10 arc-sec (+/- 5- μrad), with repeatability to +/- 0.5 arc-sec (+/- 2.5 μrad). Resolution with full professional encoder multiplication is to 0.013 arc-sec (0.063 μrad) and angular speeds of 150 degrees per second are attainable over the 20 degree travel range.