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S-340 qXqYUltra-Fast Piezo Tip/Tilt Platforms
S-340 Piezo Tip/Tilt Platforms are fast and compact tilt units, providing precise angular movements of the top platform in two orthogonal axes. The tilt range is ±1 mrad (each axes) with sub-µrad resolution. Closed loop versions are available for highest accuracy and repeatability. S-340 systems are designed for mirrors up to 100 mm diameter and have outstanding angular stability over a wide temperature range.
- ±1mrad qX and qY Tilt Range
- For Mirrors to 100 mm Æ
- Sub-µrad Resolution
- Closed Loop Versions
- Differential Design for Excellent Temperature Stability
To match the CTEs of various mirror materials the following platforms are available (see ordering information):
Application examples:
Image stabilization, laser beam stabilization, adaptive optics systems, laser beam steering & scanning, correction of polygon scanner errors.Working principle:
S-340 Tilt Platforms are equipped with two pairs of low voltage piezoelectric linear drives (0 to 100 V) operating in push/pull mode (see schematic diagram). The aluminum case is equipped with an integrated, FEA (Finite Element Analysis) modeled circular flexure featuring zero stiction/friction and exceptional guiding precision.In open loop operation, the platform angle roughly corresponds to the drive voltage (see "Tutorial: Piezoelectrics in Positioning" section for behavior of open loop piezos). The open loop models are ideal for applications where the position is controlled by an external loop based on data provided by a sensor (e.g. quad cell, CCD chip, ...).
The closed loop versions are equipped with two pairs (one per axis) of LVDT (Linear Variable Differential Transformer) sensors operated in a bridge circuit for ultra-high resolution and angular stability. They provide sub-µrad resolution and repeatability (with PI control electronics).
A) Drive Electronics for High Dynamic Applications
E-500 Chassis with 2 x standard and 1 x specially configured E-505.00 Amplifier Modules, specially configured E-509.L3 Position Servo Controller Module (required for closed loop operation, see "PZT Control Electronics" section for details).B) Drive Electronics for Static and Medium Dynamic Applications
E-500 Chassis with specially configured E-503.00 Amplifier Module, specially configured E-509.L3 Position Servo Controller Module (required for closed loop operation, see "PZT Control Electronics" section for details).
