[Home](./index.md) > [server](./server.md) > [Light](./server.light.md) > [setPenumbra](./server.light.setpenumbra.md) ## Light.setPenumbra() method Sets the penumbra of the spotlight if the light type is spotlight. **Signature:** ```typescript setPenumbra(penumbra: number): void; ``` ## Parameters

Parameter	Type	Description
penumbra	number	The penumbra of the spotlight.

**Returns:** void