Double Dynamic Lighting

Double Dynamic Lighting

In this new dynamic lighting approach, the sky-type and daylight inflow are taken into consideration actively, bringing the dynamic office lighting to life instead of only meeting the static illuminance requirement through artificial lighting. The daylight components, direct warm sunlight and diffuse cool skylight are the main source of inspiration for working with a unique combination of dynamic interaction between directional task lighting and diffuse ambient lighting, with respective intensities and colour temperatures to create naturally perceived luminous variations in the office environment.

Since 2017 the lighting technology and solution partners Tridonic, iGuzzini, Fagerhult and Zumtobel have teamed up with Aalborg University to develop and scientifically validate the ambitious Double Dynamic Lighting (DDL) concept. This new lighting design concept of dynamic indoor lighting for office environments demonstrates how advanced responsive lighting technology can bring the office lighting to life by bringing the qualities of natural light into the office and thereby improve the indoor lighting environment and work engagement. The Double Dynamic Lighting is embracing the dynamic qualities of daylight, referring to multisensory human perception of unpredictability, naturalness, flow of light, light modelling effect and personal light zones.

You can downlowad the DDL white paper here.

Registrations of 4 different lighting settings with daylight inflow on an overcast day. From the left, direct (task lighting) and diffuse lighting (ambient) as: cool/cool, warm/cool, cool/warm and warm/warm. The images are llustrating the light distribution and perceived CCTs of the space and of objects on a work desk.

Two exmaplifications of Double Dynamic Lighting concept. On the illustration on the left: DDL under clear sky condition (and partly cloudy), composed of diffuse ambient lighting (5-6000 K), with the reference to cool skylight and warm directional task lighting (3000 K) with a similar directionality of the daylight inflow from the side window. On the illustation on the right: the daylight intake is low (>50 lux), for instance on dark winter days or marking the transition of day and night, the diffuse ambient lighting is neutral with (4000 K) and task lighting warm (3000 K). The percieved atmosphere in the space is designed to be pleasant and suitable for transition and dark hours. 


Research And COnFERENCE papers

Hansen EK, Mathiasen N. Dynamic lighting balancing diffuse and direct light. In ARCH19: Building for better health 2020. Polyteknisk Boghandel og Forlag.

Hansen EK, Stoffer S, Xylakis E, Pajuste M. Dynamic lighting in office environments creating a natural flow of light. 2019. Professional Lighting Design Convention, Rotterdam October 23-26th 2019.

Hansen EK, Pajuste M, Xylakis E. Flow of light: balancing directionality and CCT in the office environment. Leukos. 2020.

Hansen EK, Bjørner T, Pajuste M, Xylakis E. A field experiment of double dynamic lighting in an office responding to sky and daylight: Perceived effects on comfort, atmosphere, and work engagement. Indoor and Built Environment. 2021


Project partners and contact persons


Saurabh Madan. Industrial Project Manager, Global Application Marketing Manager
Jan Schrottenholzer. Segment Manager, Office, Education & Industry
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Henrik Clausen. Director of Fagerhult Lighting Academy
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Peter Roos. Product & Project-Solutions Director
Laura Cinquarla. Knowledge Network Manager
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Daniel Lechner. Director Brand Management, Zumtobel & Services
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Aalborg University Copenhagen
Ellen Kathrine Hansen. Research Project Manager, Head of Lighting Design Research, PhD., Associate Professor.
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