Normalize `VB jH]$
Normalize the map data to the total emitted flux from all sources. n }MG
This option allows you to have the flux and irradiance normalized to the total SZwfYY!ft0
emitted flux. When this box is checked, TracePro divides the values in the K{|;'N- 1
irradiance map and the total flux by the emitted flux. This is especially useful for xOu
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calculating system transmittance for an optical system, or lighting efficiency for a C t SAo\F
lighting calculation. s_1]&0<
Example 1: System Transmittance $<33 E e:a
Suppose you need to calculate the system transmittance of an optical system. HmX (= Y
You would probably use the grid raytrace option, and the emitted flux is equal to .2 Rh_ful
the sum of the flux in all the emitted rays. When you display an irradiance map, # ),QWTl3
the system transmittance is equal to the total flux, displayed at the bottom of the EKoCm)}d
irradiance map window, divided by the emitted flux. To get the system Jge;/ f!i
transmittance, check the Normalize to emitted flux box and press the Apply \*_a#4a
button. The map will be redisplayed, and the Normalized Flux value will be equal T@Q.m.iV4
to the system transmittance. r2&{R!Fj`
Example 2: Lighting Efficiency 8@$QN4^u^
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating $6oLiYFX;
a plane. You would probably choose the Surface Source raytrace option, and the 5Vvy:<.la
emitted flux is equal to the flux you specified when you defined the sources. When J-,T^W v
you display an irradiance map, the total flux incident on the observation plane is : wn
