Non-visual light effects and design variables
Geometry and reflectance
DOI:
https://doi.org/10.46421/encac.v17i1.4159Keywords:
natural lighting, circadian cycle, design, buildings, computer simulationAbstract
Since the discovery of retinal cells associated with the functioning of the circadian rhythm based on received
light patterns, not so recent, studies on the effects of lighting on health have been gaining attention among
researchers and professionals in the architectural and construction fields. The topic is still in its early stages,
and due to a lack of consolidated knowledge regarding lighting design focused on the circadian rhythm, there
is a demand for studies on the effects of lighting on human well-being. Through a case study, the objective
was to investigate the effect of room dimensions and surface reflectance on the performance of circadian
lighting. The method consists of two stages: conducting computer simulations to assess the circadian potential
of referenced architectural typologies and examining the impact of architectural criteria on the circadian
rhythm. The impact of light on the circadian rhythm varies among materials, and as the depth increases, there
are variations in the values of the melanopic illuminance ratio to photopic illuminance, depending on the color
used on the walls. In addition to choosing the ideal material based on the desired influence, the geometry and
layout of the space affect the impact of natural light on human well-being. Exploring these variables provides
criteria that professionals in the field can adopt for lighting design, aiming for increased productivity and
quality of life for users.
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