Tunnel Portal Photometers – choosing the right location

The Acoem LUMIOS-MkIII photometer is designed to measure the level of luminance created by natural light at road tunnel portals. The luminance data is supplied to the tunnel’s lighting control systems, these systems ensure the visual perception of drivers is maintained both day and night by adjusting the tunnel’s portal light levels. This creates a …

Tunnel Portal Photometers – choosing the right location Read More »