room surface maintenance factor
quotient of the light reflected by the surfaces of a room after a certain time interval and light reflected when the installation is considered conventionally as new
Note 1 to entry: The room surface maintenance factor has unit one.
Note 2 to entry: to entry:´ The room surface maintenance factor is based on a simplified model for the effects of the deterioration of room surface reflectance properties and does not accurately account for room geometry and configuration.
Note 3 to entry: This entry was numbered 17-1122 and 17-1125 in CIE S 017:2011.