LichtBus
Tool

Light distribution

Drop in an IES or LDT file — polar diagram, key figures, cross-check.

Runs entirely in your browser — no file leaves your machine.

Drop an IES or LDT file here or click
Luminous intensity distribution
Key figures
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lx

Simulation of the direct component from a single luminaire — no reflections off walls or ceiling, no maintenance factor. Not a replacement for Relux or DIALux.