Normalize ->L> `<7(
Normalize the map data to the total emitted flux from all sources. `br$kB
This option allows you to have the flux and irradiance normalized to the total G&
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emitted flux. When this box is checked, TracePro divides the values in the ( 4( ,"
irradiance map and the total flux by the emitted flux. This is especially useful for OXJ'- EZH
calculating system transmittance for an optical system, or lighting efficiency for a T:Nc^QP|tm
lighting calculation. f 0&%
Example 1: System Transmittance @ Fkhida
Suppose you need to calculate the system transmittance of an optical system. pZz\o
You would probably use the grid raytrace option, and the emitted flux is equal to bEm9hFvd
the sum of the flux in all the emitted rays. When you display an irradiance map, AVi&cvhs
the system transmittance is equal to the total flux, displayed at the bottom of the lFl(Sww!\
irradiance map window, divided by the emitted flux. To get the system U0U y
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transmittance, check the Normalize to emitted flux box and press the Apply LwYWgT\e
button. The map will be redisplayed, and the Normalized Flux value will be equal ! k 1 Ge+
to the system transmittance. YS:p(jtd
Example 2: Lighting Efficiency F3[,6%4v
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating g%<n 9AUl
a plane. You would probably choose the Surface Source raytrace option, and the |'-%d^ Z
emitted flux is equal to the flux you specified when you defined the sources. When CEW1T_1U<\
you display an irradiance map, the total flux incident on the observation plane is u4j"U6"]M
displayed at the bottom of the window. The lighting efficiency is equal to the total s'|t2`K("
flux divided by the emitted flux. To get the lighting efficiency directly, check the XY#.? <"Q8
Normalize to emitted flux box and press the Apply button. The map will be V503
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency ;y_ ]w6|n
of the luminaire.
