Normalize ={]POL\ A
Normalize the map data to the total emitted flux from all sources. Y]`o- dV
This option allows you to have the flux and irradiance normalized to the total I\M
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emitted flux. When this box is checked, TracePro divides the values in the Chad}zU`
irradiance map and the total flux by the emitted flux. This is especially useful for dK8dC1@,X;
calculating system transmittance for an optical system, or lighting efficiency for a }}rp/16
lighting calculation. xzF Q)t&
Example 1: System Transmittance zK_P3r LsS
Suppose you need to calculate the system transmittance of an optical system. p y%~Qz%
You would probably use the grid raytrace option, and the emitted flux is equal to C1l'<
the sum of the flux in all the emitted rays. When you display an irradiance map, Jr X. f
the system transmittance is equal to the total flux, displayed at the bottom of the &s Yxe:H
irradiance map window, divided by the emitted flux. To get the system WWOt>C~zV
transmittance, check the Normalize to emitted flux box and press the Apply P1^|r}
button. The map will be redisplayed, and the Normalized Flux value will be equal Wl+spWqW
to the system transmittance. )%kiM<})
Example 2: Lighting Efficiency \hEIQjfi
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating #_K<-m %9
a plane. You would probably choose the Surface Source raytrace option, and the eJ ^I+?h
emitted flux is equal to the flux you specified when you defined the sources. When Akw s I@@
you display an irradiance map, the total flux incident on the observation plane is 0V8 6]zSo
displayed at the bottom of the window. The lighting efficiency is equal to the total SXE@\Afj
flux divided by the emitted flux. To get the lighting efficiency directly, check the fz8 41 <Y
Normalize to emitted flux box and press the Apply button. The map will be x&+&)d
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency G;[O~N3n.
of the luminaire.
