Precisioneers Group

The z-axis actuating system for precise objective positioning is made for applications such as single photon microscopy, laser scanning microscopy, and confocal microscopy. In general, for all kinds of very precise high resolution microscope scanning. The MIPOS piezo lens positioner is able to move the optical objective lens with unique position repeatability in the sub-nanometer range. The piezo objective positioner reacts immediately if the controller signal is adjusted. This solution offers high speed and high dynamic performance as a piezo objective slide scanners, confocal scanners and other types of optical scanners and microscopes.A piezoelectric actuator is mounted in a unique lever transmission design of flexure hinges. The small motion of the actuator, caused by an analog control signal, is transferred to a special point. The sophisticated monolithic guidance design of the solid flexure hinges means the trajectory is free of mechanical play and friction – a feature of all piezosystem jena stages.

Due to this technology, the motion is parallel to the optical beam. The resolution is very high and in practice only limited by the voltage noise of the power supply. This is why we can guarantee high accuracy only when also using piezosystem jena electronics.All MIPOS systems can be equipped with an integrated positioning feedback sensor to check and control the exact accuracy of these fine focus scanner systems.

Piezo focus fine scanner adjustment

Compact design

Parallelogram design with high resonant frequency

Parallel motion inside the optical beam

Easy to attach on microscopes

Flexible use on different microscopes and in other optical systems

Cost effective solution for fine adjustment on the microscope

Available as “upside-down” versions for inverse microscopes

The NV200/D NET is a digital piezo controller with a serial and an ethernet interface for local and remote control and servicing of piezo actuators. The user can drive quasi static or dynamic step positioning applications through the network access, allowing for more flexibility and use in critical environments. For high dynamical applications, a real time SPI inter-face is implemented.The amplifier can drive piezoelements with up to 400 mA.

With a 16 bit resolution, the NV200/D NET guaran-tees high positioning accuracy and low noise.
The NV200/D NET can automatically recognize actu-ators and adjust control parameters from stored information in the EEPROM connector. The NV200/D NET can be used with actuators equipped with either strain gauge or capacitive sensors, as well as with actuators without measurement system. The NV200/D NET also supports actuators based on pie-zosystem jena’s own NanoX® bi-directional actuating technology.

Features:

The NV200/D NET has an automatic sensor calibra-tion (ASI / ASC) function. All values of the actuating system, like serial number of the actuator, actuator name, control parameters and filter settings, are stored in the actuator plug. This allows an easy ex-change of actuators or controllers.

A digital PID controller is integrated in the device. The user can change the values according to his or her current setup. For repetitive motion patterns, an iterative learning control (ILC) algorithm can be used to achieve highest tracking precision. In this way, the NV200/D NET can achieve closed loop precision at open loop speeds. Due to its trigger input and output functions additional units of the NV200/D NET can be synchronized to control multiple axes.

This tip-tilt steering mirror platform is characterized by the positioning of optical components in two axes. A tilting range of up to ±20 mrad (open loop) / ±16 mrad (closed loop) is available. Another key feature is the easy exchange of different optical components.

The tilting system PSH 25 can be equipped with an integrated strain gauge positioning sensor. Positions can be controlled very exactly and a previously established tilt range can be set and repeated.

Optics and optical components in various sizes can be mounted on to this tilting system.

> Compact size
> Tilting range ±20 mrad open-loop, ±16 mrad closed-loop
> Up to 1.4 kHz resonant frequency
> Sub-μrad resolution

Applications:

• Laser scanning
• Laser beam stabilization
• Optical filters/switches
• Scanning microscopy (SPM)
• Image processing and stabilization