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- 3-D Imaging
- Screening
- Autofocus systems
- Microscopy
- Confocal microscopy
- Surface structure analysis
- Wafer inspection
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The N-725 PIFOC® is the first piezo objective nanopositioner equipped with a PiezoWalk® linear motor. This drive combines smooth motion, long travel ranges and fast step and settle with extreme position stability. Its exceptional stroke of 1 mm renders stepper motor positioners -often used as range extenders for piezo drives- unnecessary. The focussing plane can be selected in an extended range without any change of the mechanics. Together with a step and settle time of less than 20 ms this allows for higher throughput.
The large travel range is a big advantage for applications that have large optical penetration depth like two-photon microscopy where it allows to make use of the full working range of the objective and quickly scan through z stacks of up to 1 mm.
Simple Installation with QuickLock Thread Options
The PIFOC® is mounted between the turret and the objective with the QuickLock thread adapter. After threading the adapter into the turret, the QuickLock is affixed in the desired position. Because the PIFOC® body need not to be rotated, cable wind-up is not an issue.
PiezoWalk® – the Multi-Functional Piezo Linear Motor
A great advantage characteristic of the NEXACT® drive principle is its dual-mode operating principle combining the best features of piezo motor designs, such as high resolution, high force and high speed into one compact unit. At the target position the drive requires no current and generates no heat while providing long-term, nanometer stability. This autolocking feature also completely eliminates servo jitter as it occurs with other closed-loop motors. Since motion is solely caused by the nanometer precise motion of clamped piezo actuators, there is no wear to limit the lifetime. When operated in closed-loop, excellent velocity control is achieved.
See link for further information on NEXACT® PiezoWalk® technology.
Controller and Drive Electronics Optimized for the Application
NEXACT® actuators require special drive electronics to control the complex stepping sequences. The E-861 includes complete NEXACT® servo controller with low-noise drivers and a powerful DSP. It also comes with ample software for easy integration and highly effective computer control. For applications which do not require the highest resolution, the E-862 (see link) lower-priced drive electronics can be ordered.
The products described in this document are in part protected by the following patents:
German Patent No. P4408618.0
Scanner for Higher Resolution and Higher Loads
PI offers a range of related PIFOC® objective scanners with different specifications. The P-725 models e. g. (see link) offer resolutions of less than one nanometer. For larger loads and dynamic scanning applications the models P-726 (see link) and P-725.DD (see link) are also available with travel ranges of up to 100 µm.
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PDF Catalog Datasheet
