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Polaris Lyra®

High-Performance Optical Navigation for Confined Spaces.

Accurate. Compact. Responsive.

Exceptional Measurement Accuracy and Reliability in a Compact Size

Lyra Rigid Body

NDI’s compact optical tracker, the Polaris Lyra, is equipped with a small footprint, short stand-off, and a wide measurement volume, making it the ideal solution for applications focused on an individual body segment. Low data latency, a high measurement rate, and high accuracy add to the trusted reliability offered by the Polaris® suite of products.

Exceptional Accuracy and Performance

The Polaris Lyra tracks 6D tool positions with sub-millimetre measurement accuracy and repeatability. OEM surgical tool movements are precisely tracked and localized, with a measurement rate up to 125 Hz.

Optimized Measurement Volume

The measurement volume is optimized for targeted tool tracking within localized areas. Polaris Lyra tool geometries are correspondingly reduced, which allows for lighter and more ergonomic OEM instruments that support very precise movements.

Compact Hardware Design

The Polaris Lyra features a compact form factor and weighs less than 1.0 kg. The short stand-off allows the camera to be mounted close to the application area. Its portable design is enhanced with a pre-calibrated measurement volume and quick system start-up.

Lyra Neuro 2

Technical Specifications:

Volumetric Accuracy RMS1,20.20 mm Pyramid Volume
0.25 mm Extended Pyramid Volume
95% Confidence Interval0.40 mm Pyramid Volume
0.50 mm Extended Pyramid Volume
Maximum Measurement RateUp to 125 Hz
Average Latency125 Hz Config: <5 ms (typical)
60 Hz Config: <8 ms (typical)
Measurement VolumesPyramid Volume
Extended Pyramid Volume
Dimensions (L x W x H)276 x 78 x 70 mm
Weight0.8 kg +/- 0.05 kg
Mounting¼” thread tripod mount or secured via three M3 x 0.5 mm pitch x 9.0 mm deep threaded holes, rear mount
Tool TypesPassive, Active Wireless, Active Wired
Maximum Number of ToolsLoad up to 25 tools total – a mix of active wired, active wireless, and passive tools. Simultaneously track up to 6 passive tools, 6 active wireless tools, and 3 active wired tools.
Maximum Number of Markers per Tool6 single-face/20 multi-face
Data CommunicationGigabit Ethernet
Communication ProtocolTCP, UDP
Data/Power InterfaceEthernet, RJ45
PoE+ (IEEE802.3 at Type 2)
Synchronization InterfaceGeneral Purpose Input/Output
(GPIO) Hardware Port

1 Based on a single marker stepped through more than 900 positions throughout the measurement volume using the mean of 30 samples at each position at 20°C
2 Accuracy stated based on overall volume

Polaris Lyra Front 2

Polaris Lyra Measurement Volume

NDI Polaris
Polars Lyra Brochure TB

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Polaris Lyra Brochure

The Polaris Lyra features a compact form factor and weighs less than 1.0 kg. The short stand-off allows the camera to be mounted close to the application area.

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Optical Education Guide

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Optical Education Guide

Download this 14-page guide to learn more about optical navigation technology and the advantages it can provide for OEM solution providers.