Normalize IW$ qP&a
Normalize the map data to the total emitted flux from all sources. F5s`AjU
This option allows you to have the flux and irradiance normalized to the total i[O{M`Z%
emitted flux. When this box is checked, TracePro divides the values in the M/5+AsT
irradiance map and the total flux by the emitted flux. This is especially useful for \T:*tgU
calculating system transmittance for an optical system, or lighting efficiency for a &0k`=?v$
lighting calculation. GS@Zc2JPF
Example 1: System Transmittance Gl]z@ZXWIw
Suppose you need to calculate the system transmittance of an optical system.
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You would probably use the grid raytrace option, and the emitted flux is equal to sz@Y$<o
the sum of the flux in all the emitted rays. When you display an irradiance map, 3cSP1=$*
the system transmittance is equal to the total flux, displayed at the bottom of the #J`MR05
irradiance map window, divided by the emitted flux. To get the system #DkdFy
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transmittance, check the Normalize to emitted flux box and press the Apply ypy
button. The map will be redisplayed, and the Normalized Flux value will be equal ?C`&*+
to the system transmittance. ~LU$ n o^
Example 2: Lighting Efficiency ["~T)d'
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating 4DV@-
a plane. You would probably choose the Surface Source raytrace option, and the qbq.r&F&
emitted flux is equal to the flux you specified when you defined the sources. When >^bSjE
you display an irradiance map, the total flux incident on the observation plane is Zk<Y+!
displayed at the bottom of the window. The lighting efficiency is equal to the total {osadXdC
flux divided by the emitted flux. To get the lighting efficiency directly, check the EHF
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Normalize to emitted flux box and press the Apply button. The map will be 4sM9~zC5
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency ZO*?02c
of the luminaire.