Luminance Table

The Luminance Table report calculates luminaire luminance for the selected photometries and presents it as tabular angular data.

Luminance is calculated from luminous intensity divided by the apparent luminous area in the observation direction. In simplified form:

L = I / A_projected

I is luminous intensity in candela and A_projected is the apparent emitting area seen from the observation direction. The result is shown as luminance, normally in cd/m^2.

Geometry Dependency

The report depends on valid emitting geometry. A point source or missing emitter area cannot represent real luminance, because the projected area becomes undefined or too small. Use the Geometry Editor to define realistic emitter dimensions before using this report for glare or compliance work.

Reading The Table

High luminance at high observation angles is usually the most important glare risk. Compare the table values with project or standard limits for the relevant viewing angles.