Normalize kOR%<#:J
Normalize the map data to the total emitted flux from all sources. xVKx#X9yk
This option allows you to have the flux and irradiance normalized to the total u!nt0hS
emitted flux. When this box is checked, TracePro divides the values in the rN{&$+"2
irradiance map and the total flux by the emitted flux. This is especially useful for ~srmlBi6
calculating system transmittance for an optical system, or lighting efficiency for a Ft`#]=IS
lighting calculation. 1&QI1fvx
Example 1: System Transmittance Y!o@"Ct
Suppose you need to calculate the system transmittance of an optical system. V* fDvr0
You would probably use the grid raytrace option, and the emitted flux is equal to ET_}x7
the sum of the flux in all the emitted rays. When you display an irradiance map, ?Dm! ;Z+7
the system transmittance is equal to the total flux, displayed at the bottom of the KfWVz*DC!
irradiance map window, divided by the emitted flux. To get the system $F G4wA
transmittance, check the Normalize to emitted flux box and press the Apply PpU : 4;en
button. The map will be redisplayed, and the Normalized Flux value will be equal J;"XRE[%5
to the system transmittance. Z/;rM8[{&
Example 2: Lighting Efficiency yYdXAenQ
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating Ko''G5+
a plane. You would probably choose the Surface Source raytrace option, and the 15U=2j*.b
emitted flux is equal to the flux you specified when you defined the sources. When pPh_p@3I
you display an irradiance map, the total flux incident on the observation plane is ?e]4HHgU]
displayed at the bottom of the window. The lighting efficiency is equal to the total |}q0G~l
flux divided by the emitted flux. To get the lighting efficiency directly, check the TmX~vZ
Normalize to emitted flux box and press the Apply button. The map will be q.<q(r
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency D9H|]W ~
of the luminaire.