ZFA Series Optomechanical Focusing Nano Positioner

The Parker ZFA Series is a high-precision, optomechanical nano positioner specifically designed to deliver nanometer-level stability and minimal settling times. Its crossed roller guided, voice coil driven architecture, combined with state-of-the-art linear encoder technology, provides excellent performance in demanding applications. With a compact footprint of 95 x 90 x 36 mm, the ZFA supports objective masses up to 2 kg—optionally augmented with an external counterbalance—and features an internally configurable magnetic counterbalance along with adjustable hard stops to suit a variety of application needs. Optimized for rapid step-and-settle moves, the ZFA enhances image quality and throughput in critical fields such as digital pathology, Next-Generation Sequencing, dynamic metrology, and laser processing, while ensuring reliable performance throughout its lifecycle and lowering overall ownership costs.

In parallel, precise Z-axis focusing is essential in automation environments, where maintaining accurate vertical positioning is key for processes like imaging, inspection, and metrology. Whether implemented via direct drive or lead screw-based systems, advanced Z focusing enables automated, repeatable adjustments that boost throughput, accuracy, and consistency. In high-resolution applications, careful consideration of depth of field, payload capacity, and focusing speed is critical—often necessitating innovative approaches such as laser-based autofocus—to achieve the exacting performance required in fields like semiconductor manufacturing and digital pathology.
 


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