PST Iris Specifications

Specifications summary optical tracker PST Iris

  • Tracking up to 7 meters
  • Fanless and noiseless
  • Calibration-free bar-tracker
  • Adjustable infrared flash
  • Synchronize with external systems
  • Adjustable frame rate up to 120 Hz
  • Latency: 15-25 ms

Position: < 0.5 mm RMSE; Orientation: < 1 deg RMSE 2
15-25 ms (depending on the shutter time and the filter settings)
Refresh rate
120 Hz, adjustable to 30, 60, 120 Hz
Tracking distance
50 cm - 5 m, up to 7 m (tracking cone)
Intended use
Recommended for tracking in front of screens > than 55", powerwalls, tracking areas > 1.5 m
Set up
Plug and play
Pre-calibrated unit
Origin definition
One click process – dedicated tool included
Units needed for 6 DoF tracking
One; each PST Iris is a full 6DoF motion tracker
Expandable tracking area
Expandable, multiple trackers can be connected to expand the tracking area
Aligning units
Easy routine in seconds
Ambient Conditions
Normal indoor lighting conditions
Integrated IR LED illumination (wavelength 850nm). Flash illumination fully adjustable in PST Software Suite 5.0
Operating Temperature
15 - 35 deg. C
Devices and Markers
Number of targets
At least 15 independent 6DoF bodies. For instance: simultaneous head and object tracking
Passive (retro-reflective flat and spherical) - Active (LED)
Device creation
Simple procedure: mark, train and use new device in seconds
An additional processing unit is in most cases not needed. A power booster unit is recommended for a multi PST setup or networked access.
Tracking Application
PST Software Suite 5.0 (license included with each PST Iris or PST Base tracker)
Client operating system
Windows (Windows 7, Windows 8, Windows 10), 32 and 64 bit. The HD versions are also available for Linux (32/64 bit)
Software interface
The tracker comes with an easy to use native C/C++ SDK and bindings for C# and Python. Interfacing is also supported via VRPN, trackd2, Dtrack emulation, data export to .CSV
Hardware interface
USB 2.0 - However, PST Base results can also be shared fully transparently over Ethernet. Install the PST Software Suite 5.0 software on a second computer and connect.
Positional coordinates(x, y, z), orientation angles, Euclidean transformation matrix
Hardware trigger in and out
Approx. 1.2 kg
50.5 x 6 x 9.5 cm (W x H x D)
1/4”-20 UNC tripod mounting point
Power supply
Output 9V, 40W. Input 100-240V, 50-60Hz
Power consumption
Max. 12 W


Measurement Area Configurations


The measurement volume is the area  in which marked devices can be tracked. The distances in the images below are expressed in centimetres.

PST Iris FOV with 3.5 mm. lenses

PST Iris FOV with 4.5 mm. lenses

PST Iris FOV with 5.5 mm. lenses

 Connecting multiple trackers  (multi PST setup)

Multi Iris Labelled


  1. Preliminary Specifications, subject to change without notice.
  2. Precision measured using a grid of 7mm markers moved through the workspace up to a distance of 2.5m w.r.t. the tracking system.
  3. trackd is a trademark of Mechdyne, Marshalltown, IA, USA.