Normalize UDHOcb
Normalize the map data to the total emitted flux from all sources. y,?=,x}o#
This option allows you to have the flux and irradiance normalized to the total 1_7p`Gxt[/
emitted flux. When this box is checked, TracePro divides the values in the taDe^Istj
irradiance map and the total flux by the emitted flux. This is especially useful for =t N}4
calculating system transmittance for an optical system, or lighting efficiency for a [C!*7h
lighting calculation. 6TRLHL~B
Example 1: System Transmittance auI`'O`/
Suppose you need to calculate the system transmittance of an optical system. !S~)U{SSK
You would probably use the grid raytrace option, and the emitted flux is equal to ",apO
the sum of the flux in all the emitted rays. When you display an irradiance map, Pk&=\i<
the system transmittance is equal to the total flux, displayed at the bottom of the hq"nRH
irradiance map window, divided by the emitted flux. To get the system "s@Hg1
transmittance, check the Normalize to emitted flux box and press the Apply "9s}1C; Me
button. The map will be redisplayed, and the Normalized Flux value will be equal LYAGpcG
to the system transmittance. }:?*n:g5
Example 2: Lighting Efficiency 9q ]f]S.L
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating Zzlt^#KLx
a plane. You would probably choose the Surface Source raytrace option, and the PU%Zay
emitted flux is equal to the flux you specified when you defined the sources. When P%B|HnG^
you display an irradiance map, the total flux incident on the observation plane is FOD'&Yb&
displayed at the bottom of the window. The lighting efficiency is equal to the total `;Ui6{|
flux divided by the emitted flux. To get the lighting efficiency directly, check the N 75U.;U0
Normalize to emitted flux box and press the Apply button. The map will be ,3rsjoKhd
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency 6Takx%U
of the luminaire.