You can download IES light packs from various online libraries and manufacturer websites: Manufacturer Websites
A community-driven archive specifically for 3D artists. While not as "scientific" as manufacturer data, it is perfectly tuned for rendering.
You downloaded the file. You loaded it. But the render is still black. Here are the three most common issues when you attempt to download IES light for SketchUp. download ies light sketchup
You can spend 100 hours modeling the perfect cornice molding, but without the right light distribution, the render will look like cardboard. By learning to download IES light profiles for SketchUp, you move from being a modeler to a photographer .
I notice you're asking for two different things: a download for IES lights in SketchUp, and an interesting paper idea. Let me help with both. You can download IES light packs from various
If your IES light looks like a white nuclear explosion, your render camera exposure is too high. If it looks like a grey blob, the exposure is too low.
Most modern popular renderers support IES lights. The workflow varies slightly between them, but the concept remains the same. Popular engines that support this include: You loaded it
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.
If you just need a "generic downlight" or a "cool chandelier effect" without caring about the brand, community libraries are your best friend.