44 © Luxonic © Luxonic
Bringing daylight into the living space or enabling residents
to spend time outdoors,is a simple step to create this desirable link with the outside world and deliver a changing quality of light throughout the day. Additionally it gives many opportunities to automatically switch off artificial lighting and save considerable amounts of energy. From the perspective of the lit environment, high daylight
ingress can also bring issues associated with glare, extreme changes in light level that are often associated with falls and a distortion of the perceived shape of a space. The
concept of daylight simulation can include many things such as light colour, directionality, quantity, and the changing of all these characteristics throughout the day. Luminaires that can deliver a range of colour temperatures
are a fairly simple and appropriate solution. In conjunction with a suitable control system, DALI or wireless for example, they can provide changeable light colour and quantity throughout the day. By delivering the two colour temperatures from
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different types of luminaire it is possible to provide a directional warm white and a diffuse – possibly uplit – cool white, further mimicking natural light throughout a clear sunny day. This relatively simple configuration can be remarkably effective.
Night-time illumination
An equally important part of simulating the natural daylight cycle is to ensure appropriately low levels of illumination are used during the night. Circadian rhythms are reinforced by a regular pattern of lower levels of warm light in the late evening, reducing to an amber night light during periods of sleep. Night lighting is clearly important for enabling care staff to move around the building and monitor residents as appropriate, and also for the safety and reassurance of any residents that may be awake. These factors all go towards creating a dementia-friendly
design where the patient is the focus but every occupant benefits.
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