A study of atmosphere perception of dynamic coloured light

Abstract

A psychophysical experiment has been carried out to investigate the impact of dynamic lighting parameters on atmosphere perception. The experiment was conducted in a purpose-built LED lighting lab, where the lighting could be spatially and dynamically changed and colorimetric specifications controlled. The aim of this study was to investigate the impacts of speed, saturation and brightness of dynamic lighting on the perceived atmosphere, preference and suitability for certain spaces. Twenty native Chinese observers participated in the experiment, each assessing the environment under dynamic lighting conditions using 21 atmosphere terms. The results show significant gender differences on some scales such as safe, spatial, chilly, formal, preference and office-like. Factor analysis showed that the 21 scales can be grouped into three categories: tenseness, coziness and liveliness, and that a living room-like atmosphere evaluation is consistent with coziness. Dynamic lighting does have a significant influence on atmosphere perception. A more saturated LED light would lead to less tense, more cosy, more safe and more lively atmosphere perceptions. By increasing the speed, a more tense and less cosy atmosphere can be generated. Medium speed offers the most lively and preferred atmosphere. Brighter lighting will generate a less tense environment. More saturated colour and a slower speed will produce a more living room-like environment, but it seems that such dynamic lighting is not suitable for an office-like environment.

Affective ambiences created with lighting for older people

“…16 seconds) do not increase liveliness scores. 34 It is instead more likely that the faster dynamics in the lighting of the 'exciting' ambience for younger people made the ambience livelier for them.…”

Research perspectives of the influence of lighting modes on changes of human functional state by means of “smart lighting”

“…On the other hand, there is now scientific evidence that lighting influence health, mood, autonomic and cognitive processes, and other physiological functions [1][2][3][4][5], from which the conception of the existence of the system of non-visual effects of light arose [6], the main component of which is a special photosensitive retinal ganglion cells.…”

“…However, individual differences in the response to light exposure have been often noted within one series of experiments that were carried out under constant light conditions and experimental design. Among the factors that could have an impact on the effects of lighting, we can distinguish typological features of the subjects, their age, gender, functional status, the ratio of the intensity of exposure to differential sensitivity to this color [5,12]. We also have shown [13] that the effect of LED lighting with a color temperature of 1800K and 10000K can be dual.…”

A Multidimensional Continuous Contextual Lighting Control System Using Google Glass

“…In lighting research specifically, PCA is often applied to investigate perception and preference [8], [10], [32]. Wang et al used PCA to study the dimensions of atmosphere perception for dynamic lighting [32]. The researchers identified three principal components: tenseness, coziness, and liveliness, for both female and male participants and used the factor loadings to analyze differences between the two groups.…”

“…In social sciences, it is used for multivariate statistical problems, for example to reduce the number of variables [13]. In lighting research specifically, PCA is often applied to investigate perception and preference [8], [10], [32]. Wang et al used PCA to study the dimensions of atmosphere perception for dynamic lighting [32].…”