Normalize q D=b+\F
Normalize the map data to the total emitted flux from all sources. P 6ka'!z
This option allows you to have the flux and irradiance normalized to the total eoQt87VCU
emitted flux. When this box is checked, TracePro divides the values in the _ D8 zKp
irradiance map and the total flux by the emitted flux. This is especially useful for CL-?Mi=Uc
calculating system transmittance for an optical system, or lighting efficiency for a R$`&g@P="
lighting calculation. ?A r}QN
Example 1: System Transmittance Az#kE.8b*A
Suppose you need to calculate the system transmittance of an optical system.
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You would probably use the grid raytrace option, and the emitted flux is equal to ?@`5^7*
the sum of the flux in all the emitted rays. When you display an irradiance map, Nt?=0X|M
the system transmittance is equal to the total flux, displayed at the bottom of the :6EX-Xyj
irradiance map window, divided by the emitted flux. To get the system 9(vp`Z8B4
transmittance, check the Normalize to emitted flux box and press the Apply +ek6}f#
button. The map will be redisplayed, and the Normalized Flux value will be equal 5xNOIOpDB
to the system transmittance. 3!QXzT$E
Example 2: Lighting Efficiency p?P.BU\CR
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating ~ Hj c?*
a plane. You would probably choose the Surface Source raytrace option, and the JnnxXj30,
emitted flux is equal to the flux you specified when you defined the sources. When l ^}5PHLd
you display an irradiance map, the total flux incident on the observation plane is Qx!Bf_,J
displayed at the bottom of the window. The lighting efficiency is equal to the total *p0n^XZ% ?
flux divided by the emitted flux. To get the lighting efficiency directly, check the HTMo.hr
Normalize to emitted flux box and press the Apply button. The map will be <4 /q5*&
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency F* Yx1vj
of the luminaire.
