| Attribute | Type | Defined By | 
|---|
|  Name | IfcLabel (STRING) | IfcLightSource | 
|  LightColour | IfcColourRgb (ENTITY) | IfcLightSource | 
|  AmbientIntensity | IfcNormalisedRatioMeasure (REAL) | IfcLightSource | 
|  Intensity | IfcNormalisedRatioMeasure (REAL) | IfcLightSource | 
|  POSITION | IfcAxis2Placement3D (ENTITY) | IfcLightSourceGoniometric | 
|  ColourAppearance | IfcColourRgb (ENTITY) | IfcLightSourceGoniometric | 
|  ColourTemperature | IfcThermodynamicTemperatureMeasure (REAL) | IfcLightSourceGoniometric | 
|  LuminousFlux | IfcLuminousFluxMeasure (REAL) | IfcLightSourceGoniometric | 
|  LightEmissionSource | IfcLightEmissionSourceEnum (ENUM) | IfcLightSourceGoniometric | 
|  LightDistributionDataSource | IfcLightDistributionDataSourceSelect (SELECT) | IfcLightSourceGoniometric |