Polaris Family of Optical Tracking Systems
The Polaris® Spectra® and the Polaris® Vicra® are optical measurement systems that measure the 3D positions of either active or passive markers affixed to application-specific tools. Using this information, each Polaris System is able to determine the position and orientation of tools within a specific measurement volume.
The following is an overview of the benefits offered by the Polaris Spectra and Polaris Vicra optical measurement systems. Unless noted, all features apply to both systems.
Exceptional Accuracy |
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Multiple Measurement Volumes |
The measurement volume is the area in which the tool is tracked (within NDI accuracy specifications). Polaris Spectra comes equipped with the Pyramid Volume or an optional Extended Pyramid Volume View Spectra Volume Dimensions Polaris Vicra comes equipped with the Vicra Volume |
Short Warm-Up Time |
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Shock Alert |
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Wide Temperature Operating Range |
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Positioning Laser |
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Compact and Lightweight |
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Small Tool Geometries (Polaris Vicra) |
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Robust |
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Maintenance and Diagnostics |
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Easy Integration |
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Active and Passive Tracking |
All Polaris systems can track active and passive tools. Polaris Vicra and passive Polaris Spectra track passive and active wireless tools only. The hybrid Polaris Spectra tracks active, passive, and active wireleless tools. NDI research has shown that active and passive marker tracking is equivalent in terms of accuracy. For further information about these studies, read Accuracy Assessment and Interpretation for Optical Tracking Systems PDF (published in SPIE Medical Imaging). |
Support |
Access to NDI's exceptional service and support is included with every Polaris Spectra and Polaris Vicra system. Part of NDI's ongoing support also includes 24-hour access to NDI's Support Site - a secure online resource, providing up-to-date information about NDI products and services. For support, email support@ndigital.com. |


