- June 07, 2017
- Aerotech Inc
June 7, 2017 - Aerotech’s QFOCUS QF-50 piezo nanopositioning stage is designed for microscope objective and optics positioning. It offers 400 μm closed loop and 450 μm open loop travel, 0.01% linearity, sub-nanometer resolution, and 4 nm bidirectional repeatability. The QF-50 accommodates optical instruments and next-generation laser micromachining applications. The QF-50 is designed for optical positioning applications requiring precision and throughput coupled with long travels.
The QFOCUS QF-50 is guided by flexures optimized using finite element analysis for stiffness and resonant frequency to enable process throughput and closed-loop response. Care was taken in the QF-50 flexure bearing design to ensure geometric performance with straightness errors to 40 nm throughout the entire travel range.
Optional closed-loop feedback using a capacitive sensor design allows for sub-nanometer resolution and linearity. Unlike foil strain gages or piezoresistive sensors, capacitive sensors provide a direct measurement of the positioning carriage.
When coupled with Aerotech’s Q-series controllers and drives, the QF-50 demonstrates sub-nanometer positioning resolution and in-position stability (jitter) while maintaining positioning bandwidth. Advanced software options, such as Dynamic Controls Toolbox and Motion Designer, provide a variety of tools including Iterative Learning Control, Harmonic Cancellation, and Command Shaping,
The QF-50 is available with threaded adapters to fit most microscopes and objectives. The microscope turret mounting allows positioning at any desired orientation. In addition, tapped holes on the stage body provide alternative mounting for custom interfaces in machines or other optical instruments. The QF-50 is available with a clear aperture of 29 mm as standard. Custom stage designs, travels, and threaded adapters are available.