14.03.2019

Luminaires for the Muttenz Campus in Switzerland

Foto: Zumtobel

Around 4000 students and 840 employees study, teach and conduct research at the campus of the University of Applied Sciences Northwestern Switzerland in Muttenz near Basel. For them, pool Architekten has now created a building that brings together the institutes of five different universities and provides central facilities such as a library, cafeteria and restaurant. The 65m-high new building, a cube, is fronted by a generous forecourt and a park lined with rows of trees. The outer skin of the building is copper-coloured and its structure is reminiscent of the adjacent railway tracks. A storey-high, circumferential band of windows in the facade marks the location of the library. The spatial impression inside the building is determined by the visible load-bearing structure made of concrete and wall surfaces made of glass and wood.

The building is designed as a courtyard-type building, with a central auditorium offering space for orientation and lingering. The cafeteria and the campus restaurant are also located at ground level. Ramp-like, almost 3m-wide exposed concrete stairs traverse the hall and lead to the two auditorium levels on the first and second floors. Above them is the library. With an open floor-plan, it also offers flexible areas for seminars and student work. Two atriums as high as the building continue the room volume of the auditorium from the third floor upwards. On level 12 is a roof garden for the use of staff and students.

The lighting concept
Due to the stringent architecture of the new building and the graphic quality, Reflexion decided to integrate all the luminaires into the components as far as possible. "In a project of this size, the lighting concept needs a main layer that connects the various rooms throughout the building and weaves itself into the architecture."
The concrete ribbed ceilings define the offices, seminar rooms and laboratories as well as the corridors of the new university building from the third to the twelfth floor. Reflexion decided to insert a linear luminaire between each of the ribs, so that the rooms would be characterised by a uniform light design and light setting. A physical, three-dimensional light was to illuminate the architecture and at the same time illuminate the workplaces, and with this wish in mind Reflexion turned to Zumtobel. Together they developed the Freeline luminaire.

The luminaire
A narrow U-profile made of aluminium and a PMMA cover define the luminaire. This is made possible by the removal of the operating unit. "In order to produce a physical light, a three-dimensional light-emitting surface is required", says Thomas Mika, CEO of Reflexion, "but lateral light-emitting surfaces are critical, especially for office applications – after all, no-one wants to work with glare." To reconcile these contrasts, the luminaire has a primary and secondary lens. The primary lens consists of a high-performance lens that focuses the light from the LED strip and a diffuser that directs the light to the exit surfaces below the aluminium profile. The secondary microprismatic lens enables precise light control for office applications. The luminaire thus complies with the UGR19 standard.

Two luminaire versions
Two versions of the lamp have been created. Their external appearance is identical, but they differ in their areas of application. While one model is suitable for office and classroom applications due to the light guidance provided by the microprismatic lens, the other is equipped with a lenticular lens. This enables light control for asymmetrical light distribution, for example as a wallwasher or as panel lighting, as in the seminar rooms of the campus.

www.zumtobel.com
www.poolarch.ch
www.reflexion.ch

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

Photo: Zumtobel

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