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4 STATE OF THE ART Denmark has been highly productive in new health care architecture within the latest five years, closing down small hospitals and making five big super hospitals instead. During this process, the topic of healing architecture has been included and daylight and dynamic lighting for enhanced sleep has been buzzwords. (Interview G, 00:00:50) As a product of the new knowledge of the internal clock and the programming possibilities of LEDs, dynamic lighting to support the daily internal clock has been hypothesised. (The No- bel Prize in Physiology or Medicine 2017, no date) This is popularly referred to as human-centred lighting (HCL) or CL and has been installed in hospitals and care facilities all over Denmark. (Figure 15) Due to a lack in evaluation, it has yet to be determined how it affects the patients and how it should be programmed accordingly. Future evidence could provide standards and support new knowledge based lighting design. As hospitals need to support professional staff as well as patients 24 hours a day, CL is currently hypothesised to help inpatients and staff with reset- ting the internal clock and aligning their respective sleep patterns. Some psychiatric facilities report of less drugs and physical restraints, (HELENDE ARKITEKTUR - PSYKIATRISYGEHUSET I SLAGELSE, no date) while patients with dementia and SAD can benefit from cues of a stabilised daily rhythm and BLT. [section 2.6.1] (Halper, 2017) When seasonality, orientation and healing were investigated and later the discovery of the biological clock and hormone markers within the brain, it gave new clinical evidence for investigating the influence of daylight expo- sure. Iben, from Lightscapes explaines that initially the question of lighting was about sleep, especially in forensic psychiatry where patients can be ad- mitted for up to eight years. (Interview G, 00:03:30-00:05:24) LED technology is getting better with time and an important sustainability factor as energy consumption is now a given in new Danish health care. Bet- ter LED fixtures does not only allow for better light quality, but also for light- ing quality allowing for implementing of dynamic daylight sensors, circadian lighting schemes and seasonal changes in the lighting, thus offering a more Figure 15, timeline with new Danish health care buildings Master thesis · MSc Lighting Design · Pernille Bech-Larsen · Fall 2017 59PDF Image | Healing with light
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