ERCO is a high-end architectural lighting manufacturer. Their website has a "Light Finder" tool with a free 3D preview of the light distribution.
When downloading, try to keep your folders organized. Create a folder structure like IES_Library > Downlights > Spotlights so you can find them easily later. download ies light sketchup
Why it's interesting: Most lighting simulation focuses on illuminance (lux) or energy use. This paper would explore how to model non-visual effects of light (melanopic EDI, circadian stimulus) using accessible IES data in SketchUp – bridging architectural modeling with emerging health standards (WELL, LEH). You could compare predicted circadian efficacy against on-site measurements, or propose a plug-in workflow for designers. ERCO is a high-end architectural lighting manufacturer
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