What is Brightness?

Writer： admin Time：2021-02-26 21:12 Browse：℃

Brightness is that the eyes see the object the intensity of light emitted from a certain direction. Units of candela / square meter [cd/m2], symbol L, indicating that the light flux of the luminous body in a specific direction per unit solid angle per unit area, which is equal to one square meter surface issued on the luminous intensity of 1 candela.