Environmental Design Solutions Limited (EDSL) was formed in 1989 to commercially develop Tas Software. EDSL sells Tas software and consultancy services using Tas. EDSL believe that the mixing of development, consultancy and software support leads to a focused software product, with quality support available to end users.

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Daylight Analysis

The 3D geometry model created in the Tas 3D Modeller is exported as a 3D dwg file. This file is opened in 'Lumen Designer' from Lighting Technologies Inc., providing photo-realistic visualisation, daylight analysis and much more.

EDSL recommends Lumen Designer for calculating daylight factors. Daylight factors are then used to schedule lighting controls in Tas.

Daylight analysis can be performed on the rendered model to determine the daylight levels on any of the internal surfaces. The engineer simply places a calculation grid where they require lux level information and then runs the daylight calculation.

Luminance lux levels can be displayed numerically across the calculation grids. Daylight factors are automatically calculated by the software and can be viewed on the grids.

Lumen Designer, developed by Lighting Technologies Inc, can be purchased from EDSL.