Explanation
brightness refers to the physical quantity of luminescence (reflection) intensity on the surface of luminescence (reflector). The human eye observes the light source from one direction, and the ratio of the light intensity in this direction to the light source area "seen" by the human eye is defined as the brightness of the light source unit, that is, the luminous intensity of the unit projection area. The unit of brightness is candela/square meter (cd/m2) brightness is the person's perception of light intensity.
Classification
Information materials -> Photosensitive and display materials -> Photosensitive and display materials