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Tunnel Light Sensors
Tunnel Light Sensors and Luminance Photometers
Driver visual adaptation is a critical safety factor at tunnel entrances. The TunnelTech 601 Luminance Photometer is mounted outside the tunnel portal to monitor the average luminance of the entrance and its immediate surroundings within a 20-degree conical field of view. Utilising a metal/glass encased silicon diode photocell filtered to mimic the exact spectral response of the human eye, it measures a standard range of 0 to 6,500 cd/m². In strict compliance with CIE Publication 88 recommendations, this real-time data allows the tunnel’s lighting control system to dynamically adjust interior lighting, preventing the dangerous visual “black hole” effect that causes drivers to decelerate rapidly upon entry.
Tunnel Light Sensors and Luminance Photometers
Driver visual adaptation is a critical safety factor at tunnel entrances. The TunnelTech 601 Luminance Photometer is mounted outside the tunnel portal to monitor the average luminance of the entrance and its immediate surroundings within a 20-degree conical field of view. Utilising a metal/glass encased silicon diode photocell filtered to mimic the exact spectral response of the human eye, it measures a standard range of 0 to 6,500 cd/m². In strict compliance with CIE Publication 88 recommendations, this real-time data allows the tunnel’s lighting control system to dynamically adjust interior lighting, preventing the dangerous visual “black hole” effect that causes drivers to decelerate rapidly upon entry.
Tunnel Light Sensors and Luminance Photometers
Driver visual adaptation is a critical safety factor at tunnel entrances. The TunnelTech 601 Luminance Photometer is mounted outside the tunnel portal to monitor the average luminance of the entrance and its immediate surroundings within a 20-degree conical field of view. Utilising a metal/glass encased silicon diode photocell filtered to mimic the exact spectral response of the human eye, it measures a standard range of 0 to 6,500 cd/m². In strict compliance with CIE Publication 88 recommendations, this real-time data allows the tunnel’s lighting control system to dynamically adjust interior lighting, preventing the dangerous visual “black hole” effect that causes drivers to decelerate rapidly upon entry.
