**13.2.3.2 Spread attributes**

Spread section of the ifmSpotEmitter material

**Cone Angle**

Spread or angle of the cone to which the cosine distribution is restricted. The hemispherical domain for the distribution is rescaled to this cone.

**Penumbra**

The decay rate of light inside the defined Spread. The value describes the exponent for cosine of the angle between the axis and the sample point.