LAN3

A multispectral and multidirectional intrusive light sensor for health and environmental studies

Martin Aubé, Ph.D.

March 2021

LANcube (LAN3) is a device intended to sample the multispectral and multidirectional properties of the direct artificial light at night into the urban or natural environment (indoor or outdoor). It is a powerful tool to foster new research in the fields of the impact of artificial light at night on human health and natural environments. LAN3 is a cube having on five of of its face four sensors of various spectral response (band) in the visible range (red, green, blue and clear). Each band has been calibrated in a way to deliver the integrated fluxes. Thanks to its multispectral capabilities, the sensor can provide an estimate of the illuminance, of the correlated color temperature (CCT), the Melatonin Suppression Index (MSI), the Induced Photosynthesis Index (IPI) and the Star Light Index (SLI). The minimum light level detected is 0.005 lux. LAN3 is based on raspberry pi/arduino open source hardware so that it can be replicated by anybody. It comprise a real time clock, a mode selector, a status LED, a web server, GPS module. LAN3 act as a wifi access point so that it is possible to dowload the data or check it's status with any mobile device.


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