Real-time lighting and shadow simulation engine for immersive web experiences.
Lumen UI transforms digital surfaces into reactive lightscapes through real-time ray-traced shadows and dynamic global illumination. This engine enables artists and developers to create web experiences that behave like physical environments with accurate light propagation and reflection.
With built-in support for volumetric lighting, caustics simulation, and photorealistic materials, Lumen UI opens up endless possibilities for immersive interface design that behaves like the physical world.
"Designing with light is no longer constrained to 3D software - it's alive on the web."
Realtime path tracing engine that automatically bounces light between surfaces, creating natural ambient lighting with no precomputation. Surfaces react to light like real-world materials with accurate diffuse, specular, and reflective properties.
Create immersive experiences with 3D fog, neon beams, and light scatter effects that behave with physical accuracy. This enables dramatic visual storytelling through fog interactions and caustic lighting.
Programmatic light controls with intensity, color, and position adjustments that instantly update all shadow calculations. Light sources react instantly to user input and animation sequences.
Click + Drag to create light sources
Lumen UI is actively maintained in our open-source ecosystem. Whether you're creating AAA web games or crafting ambient UI elements, our lighting engine empowers your creative vision.
🚀 Get StartedExperimental lighting for the next generation of web experiences