Normalize Wql=PqF
Normalize the map data to the total emitted flux from all sources. r7}KV| M
This option allows you to have the flux and irradiance normalized to the total N`H`\+
emitted flux. When this box is checked, TracePro divides the values in the 2{l|<'
irradiance map and the total flux by the emitted flux. This is especially useful for !h}Vz
calculating system transmittance for an optical system, or lighting efficiency for a ~Hg*vCd ?
lighting calculation. D8E^[w!
Example 1: System Transmittance ]xb2W~
Suppose you need to calculate the system transmittance of an optical system. $Fc}K+
You would probably use the grid raytrace option, and the emitted flux is equal to `<T4En
the sum of the flux in all the emitted rays. When you display an irradiance map, ~^'t70 :D
the system transmittance is equal to the total flux, displayed at the bottom of the ? ][/hL@[
irradiance map window, divided by the emitted flux. To get the system }c=Y<Cdh
transmittance, check the Normalize to emitted flux box and press the Apply *'M+oi
button. The map will be redisplayed, and the Normalized Flux value will be equal J%q)6&
to the system transmittance. k[<i+C";
Example 2: Lighting Efficiency m8b-\^eP7
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating k'e1ZAn
a plane. You would probably choose the Surface Source raytrace option, and the 5oB#{h
emitted flux is equal to the flux you specified when you defined the sources. When 4~oRcO8!Y
you display an irradiance map, the total flux incident on the observation plane is kDQE*o
displayed at the bottom of the window. The lighting efficiency is equal to the total DW7Jk"\GH
flux divided by the emitted flux. To get the lighting efficiency directly, check the 1_9Ka
V
Normalize to emitted flux box and press the Apply button. The map will be 9X#]Lg?b
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency bYhG`1,$-a
of the luminaire.