Luminance is the term used to define the amount of light reflected or emitted off surfaces. Establishing luminance ratios between surfaces of a given room permits to evaluate its light quality and its visual comfort. Luminance ratios higher than 1:20 (high contrast) within a normal view (neighbouring surfaces) are considered potential sources of visual discomfort (glare), whereas ratios of 1:1 (low contrast) will make a space look too evenly lit (or too dull). Variation in light levels, while not exceeding the recommended luminance values and ratios, promotes an environment with visual interest.
The following is a luminance-based evaluation of the daylighting conditions in Atika. The luminance values are presented by means of false colour images corresponding to different views and situations in the house. It demonstrates Atika’s potential to control the light quantity and quality under different conditions.
The variable roof slope design and the strategically considered position of the various openings, with adequate shading devices, provide a freedom of choice of the light conditions in the rooms. Atika’s daylighting scheme can adapt to different conditions during the day and season while meeting the needs of the occupants and rooms of the house.
Please choose room type on the left menu for luminance evaluations.