Normalize nOQa_G]Gz
Normalize the map data to the total emitted flux from all sources. 7T"XPV|W6
This option allows you to have the flux and irradiance normalized to the total /
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emitted flux. When this box is checked, TracePro divides the values in the >7roe []-|
irradiance map and the total flux by the emitted flux. This is especially useful for Ja SI^go
calculating system transmittance for an optical system, or lighting efficiency for a Yp0/Ab(v
lighting calculation. `;YU.*
Example 1: System Transmittance uZZU{U9h
Suppose you need to calculate the system transmittance of an optical system. 9}c8Xt^&
You would probably use the grid raytrace option, and the emitted flux is equal to 3:{yJdpg
the sum of the flux in all the emitted rays. When you display an irradiance map, R/^u/ ~<
the system transmittance is equal to the total flux, displayed at the bottom of the V97,1`
irradiance map window, divided by the emitted flux. To get the system CiR%Ujf
transmittance, check the Normalize to emitted flux box and press the Apply h? -#9<A
button. The map will be redisplayed, and the Normalized Flux value will be equal A<\JQ
to the system transmittance. 11|Rdd+}
Example 2: Lighting Efficiency f50L,4,
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating Y-'78BJk
a plane. You would probably choose the Surface Source raytrace option, and the * ,v|y6
emitted flux is equal to the flux you specified when you defined the sources. When VdP`a(Yd;
you display an irradiance map, the total flux incident on the observation plane is 5@hNnh16
displayed at the bottom of the window. The lighting efficiency is equal to the total @Kf_z5tm:
flux divided by the emitted flux. To get the lighting efficiency directly, check the /m( =`aRt
Normalize to emitted flux box and press the Apply button. The map will be lQfL3`X!
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency >HPdzLY?
of the luminaire.
