The new P-725 piezo-based lens scanners from PI were extensively redesigned. They are characterized by high dynamics, precision and usability. In addition to systems with 100 µm and 400 µm travel range, PI now also offers a system with 800 µm travel range
PI (Physik Instrumente) has completely redesigned its portfolio of compact vertical positioners for microscope objectives – PIFOCs. Essential improvements are the higher dynamics, travel ranges to 800 µm, and a simpler handling. The PIFOCs, suited for integration in objective revolvers of upright as well as inverse microscopes, are important for applications in life sciences, materials microscopy, quality assurance, and the semiconductor industry.
At the heart of the new PIFOC® portfolio are three systems that differ in their travel ranges: 100 µm, 400 µm, or 800 µm. Thanks to a few constructional changes, such as optimized levers and steel mounts, major improvements of the dynamic properties could be achieved. Additionally, for the first time a vertical positioner with an 800 µm travel range is also available.
Simplified Handling
The handling of the PIFOCs was also optimized. The new clamp ring only puts slight restrictions on the original focus displacement in the Z direction of the focus knob. For a lower number of variants, the largest possible diameter was chosen for the aperture. A set of adapter rings makes it easy to screw in different objectives of a size of up to M34.
Small Bending Radii of the Cables and Improved Strain Relief
The rotation, which is repeatedly carried out at the revolving nosepiece when changing the magnification, puts mechanical strain on the signal and current carrying cable. A new sheathing of the cable now makes much tighter bending radii possible; the new strain relief reliably prevents damage of the cable entry at the PIFOC® housing.
All new PIFOCs have been equipped with D-sub connectors as a standard and are so compatible with PI digital controllers. ID chips are integrated into the connectors. These store the servo and linearization parameters determined during calibration. The autocalibration function uses this data each time the controller is switched on. In this way, the overall system does not have to be recalibrated when one single PIFOC or controller is exchanged.