Normalize O1nfz> L`
Normalize the map data to the total emitted flux from all sources. #eqy!QdePf
This option allows you to have the flux and irradiance normalized to the total |<@X* #X5
emitted flux. When this box is checked, TracePro divides the values in the !2('Cq_^
irradiance map and the total flux by the emitted flux. This is especially useful for kCRP?sj
calculating system transmittance for an optical system, or lighting efficiency for a :EK.&% 2
lighting calculation. XK)q Dg
Example 1: System Transmittance [hf#$Dl |
Suppose you need to calculate the system transmittance of an optical system. v :YW[THre
You would probably use the grid raytrace option, and the emitted flux is equal to ACg5"
the sum of the flux in all the emitted rays. When you display an irradiance map, Xm7Nr#
the system transmittance is equal to the total flux, displayed at the bottom of the (aX5VB **
irradiance map window, divided by the emitted flux. To get the system .[-d( #l{l
transmittance, check the Normalize to emitted flux box and press the Apply &b 2Vt
button. The map will be redisplayed, and the Normalized Flux value will be equal `]^JOw5o
to the system transmittance. NhxTSyT"t
Example 2: Lighting Efficiency +G3&{#D
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Suppose you need to calculate the lighting efficiency of a luminaire in illuminating Og`6>?>97
a plane. You would probably choose the Surface Source raytrace option, and the g E/O 29Y
emitted flux is equal to the flux you specified when you defined the sources. When +_8*;k@F'
you display an irradiance map, the total flux incident on the observation plane is 4Lx#5}P
displayed at the bottom of the window. The lighting efficiency is equal to the total *8zn\No<,
flux divided by the emitted flux. To get the lighting efficiency directly, check the yIwAJl7Xf
Normalize to emitted flux box and press the Apply button. The map will be _u^ S[
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency Rld1pX2v
of the luminaire.
