Smart City  Tunnellighting  Surface- and Streetlighting
 Halllighting  Airportlighting
Kontakt DE
 Surface- and Streetlighting  Tunnellighting Smart City
 Airportlighting  Halllighting
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L20 adjustment for zoom object depth
Smart City   Street Lighting   Tunnel Lighting   Hall Lighting   Airport Lighting
Tunnel Smart City Tunnel
Tunnel Streets Tunnel
Tunnel Tunnel Tunnel
Tunnel Hall Tunnel
Tunnel Airports Tunnel

  After entering the maximum permissible speed and the longitudinal inclination, the minimum and maximum distance (L20 circle) of the luminance camera to the tunnel portal is calculated.

The formula is based on DIN 67524-1, Annex D. (old)
The formula is based on DIN 67524-1, Annex C.
   L20 adjustment for zoom lenses   
Note: All data and calculations without guarantee  
Source: DIN 67524-1, Annex D (old)
DIN 67524-1, Annex C (new)