Light Tunnel Mk2

The light tunnel is a chamber with a controllable light source, linear polarizers mounted on rotating frames, and sensors to measure light intensity at different frequencies and locations. Additional sensors and actuators allow measuring and controlling a range of variables in the physical system. A camera captures images from inside the tunnel.

Data types

The chamber produces images and i.i.d. data from up to 99 variables, including sensor measurements, control inputs, and sensor parameters. See the hardware configurations for a full description.

Simulators

See the Simulator Index for a list of the simulators we offer for this chamber, including documentation and example code.

Fault detection

As for the Wind Tunnel Mk2, it is possible to artificially introduce faults in the system, e.g., by modifying sensor parameters or altering the current flow to the different components. See the case studies for more details.

Hardware configurations

See the documentation of each configuration for a chamber diagram, a complete description of all variables, and the causal ground-truth graph.

Name	Img. data	Description	Documentation	Causal ground-truth
standard		Standard configuration with all variables (excl. motor parameters).	.pdf	.pdf
linked_leds		Additional tunable causal effects.	.pdf	.pdf
camera_fast		Provides images and camera variables.	.pdf
led_matrix		Same as camera_fast but with individual control of the light-source LEDs.	.pdf