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The new installation at VfB Stuttgart provides outstanding light quality meeting the requirements of DIN 12193.

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  • Lamp efficacy

    Lamp efficacy

    Ensuring the lamp efficiently converts electricity into light (lm/W).

  • Ballast classification

    Ballast classification

    Controlling the electricity supply to the lamp (Energy Efficiency Index).

  • Luminaire distribution

    Luminaire distribution

    Controlling light emission using optics which bend and shape the light to the correct location.

  • System efficacy

    System efficacy

    Combining optical and thermal control within the luminaire (luminaire lm/W).

  • Presence/absence detection

    Presence/absence detection

    Presence: Lights automatically turn on/off with movement. Absence: Lights automatically turn off and must be manually switched on.

  • Daylight detection

    Daylight detection

    Artificial lighting which responds to the natural light conditions.

  • Constant illuminance

    Constant illuminance

    A function designed to produce correct light levels for the duration of the maintenance period.

  • Task-scene setting

    Task-scene setting

    Allowing the user to set scenes and adapt the lighting to different tasks.

  • Timed off

    Timed off

    Automatic cut-off can be installed to turn all lights off during unoccupied hours.

  • Task lighting

    Task lighting

    Lighting task areas with the correct amount of light.

  • Zoning of lighting

    Zoning of lighting

    Lighting is zoned according to area use.

  • Maintenance schedule

    Maintenance schedule

    Maintenance must be performed in response to product age, performance and environment.

  • Waste light

    Waste light

    Eliminating waste light which does not hit the intended target.

  • Reflectance

    Reflectance

    Taking advantage of light which is reflected from the surface within the space.

  • Visible smart metering

    Visible smart metering

    Results of actions can be quickly seen as increased or decreased energy use to encourage responsible energy consumption.

The challenge

Thorn recently provided new lighting for three training pitches for VfB Stuttgart, one of the top football clubs in Germany’s Bundesliga.

It’s the latest of a number of projects that Thorn has been involved with at the club, including lighting for both indoor and outdoor areas.

VfB Stuttgart wanted the three pitches, which have recently been completely rebuilt, to be lit to 300 lux in accordance with the DIN 12193 standard for sports lighting, with the option of increasing light levels in future by adding more luminaires. Glare had to be very carefully controlled because the pitches are located near to a major road, and the positions of the six 25-metre poles that hold the luminaires was already determined for geological reasons.

The lighting solution

Thorn installed 60 Altis LED luminaires, designed specifically for sport and area lighting. Altis LED can be equipped with one, two or three LED modules providing a total of up to 176,000 lumens of light, and its flexible optical system enables numerous combinations and configurations, minimising the number of luminaires needed in an installation.

Altis LED’s modular construction provides the possibility to not only mix different optics, but also to tilt each individual LED module to optimise the lighting design process. At VfB Stuttgart, a combination of medium and wide-beam versions with symmetrical distribution were used, with modules adjusted to achieve the right distribution of light. On the two larger pitches, luminaires with three LED modules were used, while for the smaller pitch, luminaires with two modules were installed.

The result

The new installation at VfB Stuttgart provides outstanding light quality for these important training areas, with a neutral colour temperature of 4000K and a colour-rendering index (CRI) of 70. The light meets the requirements of DIN 12193, which calls for 300 lux, a minimum-to-average uniformity ratio of 0.7 and a glare rating below 50. The Altis LED luminaires are arranged vertically on the specially-made 24-26-metre poles, creating an impressive daytime appearance. It’s a great result for VfB Stuttgart, especially as the club prepares to host games for the 2024 European Championship.

Alexander Hartlieb, Zumtobel Lighting Group’s head of outdoor lighting for Germany, said:

The overall look is very impressive. It’s a very bright pitch now, and the uniformity is phenomenal. That was made possible by the flexibility of Altis LED, which allowed us to mount and adjust each luminaire in just the right way to achieve the best effect.”

Marcus Bretschneider, Division Manager, Arena Operations and Services at VfB Stuttgart, said:

“Thanks to optimised lighting technology and flexible mounting options, we were able to achieve with the Altis LED floodlight from Thorn standard-compliant illumination of our training courses in the midst of a critical environment right next to a busy federal highway. The lighting impresses with its uniformity and cost-effectiveness, thus ensuring an optimal lighting solution for our training pitches.”