05 Nov 2007 High-speed piezo steering mirrors are used in image / beam stabilization, resolution enhancement, scanning and tracking applications. Nanopositioning specialist PI (Physik Instrumente) offers a variety of piezo-driven, high-speed steering mirrors (beam controllers) for use in image / beam stabilization, resolution enhancement, scanning and tracking applications. The latest designs provide multi-axis motion with high bandwidth, sub-microradian resolution and optical deflection ranges up to 100 mrad.
Applications
The steering-mirror systems were designed to improve the performance of optics and imaging systems in a variety of applications ranging from lithography to bio-medical instrumentation, and bio-tech research such as bead localization / control.
Single-Pivot-Point Design for Improved Linearity, Dynamics
PI high-speed mirror positioners are based on a parallel-kinematics design with a single moving platform and coplanar rotational axes, for jitter-free, multi-axis motion. In addition, the single-pivot-point design provides better linearity and avoids the drawback of polarization rotation, common with galvo scanners, where two single axis systems need to be stacked to provide XY motion.
Compared to stacked, multi-axis systems, the parallel-kinematics design provides faster response and better linearity with equal dynamics for all axes in a smaller package.
Closed-Loop, Absolute Position Sensors, Nanoradian Resolution
Multiple integrated, absolute measuring position sensors feed the platform position information back to a piezoelectric controller for enhanced linearity and stability.
Flexure Guided, Driven by Solid-State Actuators for Faster Response
The flexure-guided, piezoelectric platforms can provide higher accelerations than voice coil actuators, enabling step response times in the sub-millisecond range.
Controllers
A variety of analog and digital controllers in bench-top, OEM-board, and rack-mount designs are available to drive the units.
More Information on the Fast Steering Mirrorsis available here
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