Emotional Lighting Design of Indoor Spaces by Kansei Engineering

抄録

New lighting applications aspire to provide more benefits —than simply allowing vision— such as improving mood, sleep quality, and daily performance. 3D printing and laser cutting technologies found an application in the design of luminaries with very complicated artificial structures where the creation of unique light patterns is achieved. Computer-based, lighting simulation and assessment tools can assist in the creation and analysis of the lighting quality of space. However, these outcomes depend on the lighting designer’s knowledge and experience. It is necessary to develop methods to quantitatively evaluate people’s feelings and preferences toward such stimuli and to implement those emotional qualities into the lighting of space. This introductory study proposes a lighting design approach where the elements of light patterns, such as the direction of light, the beam pattern, the color temperature of light and the symmetry of light distribution, are assumed as design elements. The second assumption was that the lit lamp has a different appearance than the non-lit lamp, thus these can be understood as two different products requiring two different Kansei scales in order to evaluate the emotional impressions they give to the perceiver. In this context, the study had two goals: (a) to apply Kansei Engineering for the classification of lit and non-lit wall sconces based on the people's emotional perceptions; (b) to implement the people's emotional preferences of wall sconce's lighting into the selection of a wall sconce that creates an intended space mood in the dark and an invisible effect in daylight.