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HCLS : Perceptual Lighting Quality Assessment Methods

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Author: Toet, A.
Type:report
Date:2014
Publisher: TNO
Place: Soesterberg
Identifier: 502432
Report number: TNO 2014 R10491
Keywords: Vision · Defence, Safety and Security · Human Performances · PCS - Perceptual and Cognitive Systems · ELSS - Earth, Life and Social Sciences

Abstract

Lighting is not only essential for human functioning but it also creates specific impressions, generates desired patterns of behavior and contributes to visual comfort and feelings of safety. The Human Centric Lighting Solutions program of the Snellius Innovation Partnership aims to develop evidence based ‘dynamic lighting’ and ‘personalized lighting’ concepts that effectively support all the aforementioned functions. To develop and optimize evidence based lighting concepts, there is a need for validated and effective methods and techniques to assess to what extent lighting concepts meet their specific objectives, i.e. whether lighting indeed succeeds in manipulating the sensory aspects of the environment in such a way that people are supported and the intended effects are achieved (e.g. increased visual performance, feel comfortable in that environment, exhibit a desired behavior). This report presents an overview of evaluation measures, data collection and analysis methods that may serve to assess different aspects of perceptual lighting quality. Thereto, we identified appropriate methods and techniques to obtain data for several relevant parameters, statistically based data from participants and the external factors that have to be taken into account when studying a lighting concept (indoor or outdoor) in a field test. The perceptual lighting quality measures and evaluation procedures presented in this report may serve as an underlay for the design of experiments to test the effectiveness of new lighting concepts in practice.