DOUBLE DYNAMIC LIGHTING
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COMPLEMENTING THE DYNAMICS OF THE SKY AND SUNLIGHT
Light Levels Light levels of min. 500 lx on the task area and 300 lx in the space, meeting EN 12464 standard. However, the direct light source is proposed to be personalized to meet the users’ needs best with adjustable intensity and CCT, due to the variation in meeting visual comfort or perceived atmosphere.
DDL Guideline Notes The aim of these generalized guidelines is to act as an inspiration for future designs and developments of the dynamic lighting potentials and thereby support the indoor environment to meet human needs for natural variations. The guidelines are based on the specific context and can be adjusted to different spatial, functional and geographic context. Act as inspiration for future designs and experiments [6].
Illustration 2: Ellen Kathrine HANSEN, Ph.D., Assoc. Prof. | Aalborg University, Copenhagen
grated component, whereby the dynamics of daylight and the dynamics of electrical lighting are distributed in a space with an understanding of creating space for people. People, who have a natural need for being inspired, engaged and stimulated to encourage creativity and collaboration in a dynamic environment. "
Discussion Recently the four “stars” within lighting research Boyce, Cuttle, Kelly and Raynham published an article “The ambient lighting manifesto” stating that there is a need for a paradigm where we stop designing lighting following illuminance standards for a uniform illumination on a horizontal work plane [7]. They suggest that we give the priority to the lighting of the space rather than solely focusing on the visual tasks. Their reason for this is that today, we mainly use screens for reading and working and the printed material is of high quality. Their recognition of light generating both visual and nonvisual responses for both health and well-being creates a focus on the light meeting the eye, not a horizontal plane but also a focus on the need for understanding the effect of balancing the ambient light in the space with the task lighting. Finally, they stress that the high level of uniform illumination can use more energy and money and therefore it is not environmentally friendly. Following the current standard, light is delivered where it is not needed and, in an intensity, not necessary and a waste of energy. They suggest that the current standards for minimum uniform illumination at a horizontal space to a minimum ambient illumination and thereby include considerations of light distribution throughout the space and thereby consider the perception of the space [7]. This is exactly the approach with the Double Dynamic Lighting concept. We need the lighting community to understand that the lighting should be designed as one inte56
AUTHOR: Ellen Kathrine HANSEN, Ph.D., Associate Professor Head of MSc program and Lighting Design Research Group, Ph.D., Associate Professor Aalborg University, Copenhagen. Ellen Kathrine Hansen holds a Master in Architecture from the Royal Academy of Fine Arts in Copenhagen and a Ph.D. in transdisciplinary Lighting Design processes from Aalborg University. Hansen is a prominent person in the field of transdisciplinary design research and teaching within light and sustainable architecture. She has more than 25 years of experience driving projects within the field of developing new sustainable and architectural potentials through integration of daylight, technology and materials. Her projects are based on combining knowledge and skills from technical, humanistic and industrial environments. In 2012 Hansen left the window industry to start up a new Master of Science program and research platform at AAU, designing with light in a transdisciplinary context combining lighting technology, architecture and media technology. In this context the Double Dynamic Lighting (DDL) approach was founded by Hansen and integrated in the research and teaching. Hansen has been leading this research project “Double dynamic lighting, bringing the qualities of daylight into the office” co-financed by the industrial partners Tridonic, Fagerhult, iGuzzini and Zumtobel.
Acknowledgement This ambitious approach has made such progress because of valuable contributions from our Lighting Design Research Group at AAU. Thanks to Sofie Linnebjerg, Nanet Mathiasen, Mette Hvass, Kathrine Schimmermann, Michael Mullins, Michael Clary, Georgios Triantafyllidis, George Palamas, Nicklas Andersen, Mihkel Pajuste, Manos Xylakis, Thomas Bjørner and Sophie Stoffer. I would also like to thank our industrial partners for believing in our approach and supporting us financially and with equipment. A special thanks to Saurabh Madan and Jan Schottenholzer from Tridonic, Henrik Clausen from Fagerhult, Peter Roos and Laura Cinquarla from iGuzzini and Daniel Lechner from Zumtobel.
References [1] Hansen EK, Mathiasen N. 2019. Dynamic lighting balancing diffuse and direct light. Presented at Arch19 Conference, Building for Better Health, Reserach & Innovation in Architecture & Urban Design for Care & Health”, June 12th-14th 2019, Trondheim, Norway. [2] Cuttle C. Lighting design: a perception-based approach. New York NY, Routledge, 2015. [3] Boyce PR, Veitch JA, Newsham GR, Jones CC, Heerwagen J, Myer M, Hunter CM. 2006. Lighting quality and office work: two field simulation experiments. Lighting Res Technol. 38(3):191–223. [4] Hansen EK, Pajuste M, Xylakis E. Flow of light: balancing directionality and CCT in the office environment. Leukos. The Journal of the Illuminating Engineering Society 2020. DOI: 10.1080/15502724.2020. 1808014 [5] Hansen EK, Bjørner T, Xylakis E, Pajuste M. An 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 in press. [6] Hansen, EK, Pajuste M. Double Dynamic Lighting — Bringing Qualities of Natural Light into the Office. White Paper, 2020. . 17.12.20 [7] Boyce P, Cuttle K, Kelly K, Raynham, P. The ambient lighting manifesto, SSL Light Lines, September/October 2020.
© 2021 Luger Research e.U. | LED professional Review (LpR) | Lighting Technologies & Design
. 27.11.20
Issue 83/Jan-Feb/2021