Normalize FO)`&s"&2
Normalize the map data to the total emitted flux from all sources. UB]] oC<
This option allows you to have the flux and irradiance normalized to the total pE 6r7
emitted flux. When this box is checked, TracePro divides the values in the WQv`%%G2>
irradiance map and the total flux by the emitted flux. This is especially useful for O+=C8
calculating system transmittance for an optical system, or lighting efficiency for a R) J/z
lighting calculation. P9M. J^<
Example 1: System Transmittance Ph17(APt,Q
Suppose you need to calculate the system transmittance of an optical system. V1\Rj0#G
You would probably use the grid raytrace option, and the emitted flux is equal to ZdlQ}l#F
the sum of the flux in all the emitted rays. When you display an irradiance map, 9:7&`J lC#
the system transmittance is equal to the total flux, displayed at the bottom of the Q+dLWFI
irradiance map window, divided by the emitted flux. To get the system <+:
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transmittance, check the Normalize to emitted flux box and press the Apply S6{u(= H
button. The map will be redisplayed, and the Normalized Flux value will be equal ;rC< C
to the system transmittance. MI>_wG5P@
Example 2: Lighting Efficiency yUvn h
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating w~>tpkUB
a plane. You would probably choose the Surface Source raytrace option, and the ]%+T+ zg(Y
emitted flux is equal to the flux you specified when you defined the sources. When I~ e,']
you display an irradiance map, the total flux incident on the observation plane is sfs2ki H
displayed at the bottom of the window. The lighting efficiency is equal to the total Y``]66\Fp
flux divided by the emitted flux. To get the lighting efficiency directly, check the g1&q6wCg|
Normalize to emitted flux box and press the Apply button. The map will be 2{4f>,][
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency FvDi4[F#
of the luminaire.
