Define rooms, walls, ceiling heights, and reflection factors.
: Specialized wizard computes complex road geometries and luminance requirements.
DIALux 4.3 was built on a foundation of powerful features that made it the gold standard in lighting calculation for its time: dialux 43
If your calculation fails or objects appear completely black, check for overlapping geometry. Ensure that luminaires are not accidentally embedded inside solid ceiling objects, which blocks the photometric web from emitting light. 🖨️ Generating Professional PDF Reports
You must manually download manufacturer plugins (Philips, OSRAM, Trilux). In 2025, many manufacturers have removed 4.3 plugins. You need to use the "Import IES" function instead. Define rooms, walls, ceiling heights, and reflection factors
: Designers use it to ensure their plans meet international standards (such as EN 12464-1 for indoor workplaces). Photometric Data : It integrates real-world product data through luminaire catalogues
While DIALux 4.3 is no longer officially supported, you can still find and use it, especially for learning or maintaining older projects. Here’s how: Ensure that luminaires are not accidentally embedded inside
It seems you are looking for a — a specific older version of the free lighting design software from DIAL GmbH.
Disclaimer: This article is for informational purposes. Dialux is a trademark of DIAL GmbH. Always check local building codes for specific lux requirements.
The interface is split into three main areas: the (left), the CAD Window (center), and the Inspector (bottom left).