Lumen
The unit of luminous flux.
Read time 1 minuteLast updated 4 days ago
Definition
- Type: Field
- Namespace: UnityEngine.Rendering
- Assembly: UnityEngine.CoreModule
Lumen = 0
Remarks
Describes the total amount of visible light that a light source emits in all directions. When you use this unit, the amount of visible light is independent of the source's size meaning the illumination level of a Scene does not change depending on the size of a light source. However, highlights that a light source produces dim as the area of the light source increases. This is because the same power is spread across a larger area.
A light source that emits 1 candela of luminous intensity from an area of 1 steradian has a luminous flux of 1 lumen.
Compatible light types: LightType.Point, LightType.Spot, LightType.Pyramid, LightType.Rectangle, LightType.Disc, LightType.Tube.
Additional Resources: Light.lightUnit, light component.