Normalize "_1)CDqP
Normalize the map data to the total emitted flux from all sources. ]a'99^?\
This option allows you to have the flux and irradiance normalized to the total vXE0%QE'Q
emitted flux. When this box is checked, TracePro divides the values in the iE].&>w
irradiance map and the total flux by the emitted flux. This is especially useful for b:W-l?
calculating system transmittance for an optical system, or lighting efficiency for a xHA0gZf
lighting calculation. sG7u}r
Example 1: System Transmittance <vV_%uoM
Suppose you need to calculate the system transmittance of an optical system. H t(n%;<
You would probably use the grid raytrace option, and the emitted flux is equal to 3Q^fVn$tk
the sum of the flux in all the emitted rays. When you display an irradiance map, JRaq!/[(
the system transmittance is equal to the total flux, displayed at the bottom of the N2C7[z+l`
irradiance map window, divided by the emitted flux. To get the system ino:N5&;;
transmittance, check the Normalize to emitted flux box and press the Apply QzvHm1,@
button. The map will be redisplayed, and the Normalized Flux value will be equal 8\.b4FNJ
to the system transmittance. S\i@s_
Example 2: Lighting Efficiency ~f\G68c
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating 3uWkc3
a plane. You would probably choose the Surface Source raytrace option, and the Kn`M4O
emitted flux is equal to the flux you specified when you defined the sources. When ~`ny@WD9
you display an irradiance map, the total flux incident on the observation plane is WKfkKk;G
displayed at the bottom of the window. The lighting efficiency is equal to the total +]Zva:$#`
flux divided by the emitted flux. To get the lighting efficiency directly, check the i1lBto[
Normalize to emitted flux box and press the Apply button. The map will be AIYmS#V1W2
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency #%0Bx3uM
of the luminaire.