Normalize M&^Iun
Normalize the map data to the total emitted flux from all sources. Wph@LRB]
This option allows you to have the flux and irradiance normalized to the total rVv4R/3+
emitted flux. When this box is checked, TracePro divides the values in the WFG`-8_e[I
irradiance map and the total flux by the emitted flux. This is especially useful for Qgxpq{y
calculating system transmittance for an optical system, or lighting efficiency for a UHFI4{Wz
lighting calculation. Q<T+t0G\O-
Example 1: System Transmittance BTDUT%Yfg
Suppose you need to calculate the system transmittance of an optical system. H,0Io
You would probably use the grid raytrace option, and the emitted flux is equal to ~;yP{F8?
the sum of the flux in all the emitted rays. When you display an irradiance map, J3c8WS{:
the system transmittance is equal to the total flux, displayed at the bottom of the PAS0 D
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irradiance map window, divided by the emitted flux. To get the system \JbOT%1
transmittance, check the Normalize to emitted flux box and press the Apply T1i}D"H %
button. The map will be redisplayed, and the Normalized Flux value will be equal +\U#:gmw
to the system transmittance. .dKFQH iYJ
Example 2: Lighting Efficiency 4x"9Wr=}
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating giORc
a plane. You would probably choose the Surface Source raytrace option, and the M6XpauR-
emitted flux is equal to the flux you specified when you defined the sources. When c|<E~_ .w@
you display an irradiance map, the total flux incident on the observation plane is =H;F{J "
displayed at the bottom of the window. The lighting efficiency is equal to the total # TPS? +(
flux divided by the emitted flux. To get the lighting efficiency directly, check the ,_z"3B)]
Normalize to emitted flux box and press the Apply button. The map will be T.pc3+B8N
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency q}cm"lO$
of the luminaire.
