Beyond illumination: An interactive simulation framework for non-visual and perceptual aspects of daylighting performance

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Summary

This paper presents a simulation framework (Lightsolve) that extends daylighting design beyond illumination metrics to include non-visual health effects and perceptual qualities, enabling architects to evaluate circadian-relevant light exposure across time and space. By embedding photobiological models of the non-visual system into interactive design tools, it supports evidence-based daylighting decisions during the design process.

Key Findings

Proof-of-concept framework integrates time-dependent non-visual light response models (covering sleep, health, and wellbeing) into the Lightsolve simulation environment using a Radiance calculation engine.
Two novel daylighting performance dimensions are introduced: 'health' (based on photobiological non-visual responses) and 'delight' (based on dynamic spatial contrast variability), expanding conventional metrics of illumination and glare.
The goal-based, interactive visualization platform allows temporal and spatial distribution of both visual and non-visual performance to be assessed simultaneously during architectural design.

Categories

The Science of Light: Integrates photobiological findings on non-visual light responses, including melanopsin-driven circadian effects, into a dynamic simulation framework for daylighting design.

Sleep & Circadian Health: The framework models time-dependent non-visual responses to light relevant to sleep, health, and wellbeing as design performance metrics.