Normalize 5M> p%/
Normalize the map data to the total emitted flux from all sources. g_ep
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This option allows you to have the flux and irradiance normalized to the total )+v5H
emitted flux. When this box is checked, TracePro divides the values in the OLF6["0Rn
irradiance map and the total flux by the emitted flux. This is especially useful for +z9BWo!{I
calculating system transmittance for an optical system, or lighting efficiency for a RPMz&/k
lighting calculation. )/f#~$ws
Example 1: System Transmittance GZ<@#~1%\
Suppose you need to calculate the system transmittance of an optical system. D*46,>Tv
You would probably use the grid raytrace option, and the emitted flux is equal to 5O~xj:
the sum of the flux in all the emitted rays. When you display an irradiance map, _s-X5xU
the system transmittance is equal to the total flux, displayed at the bottom of the m; =S]3P*
irradiance map window, divided by the emitted flux. To get the system 3v$n}.
transmittance, check the Normalize to emitted flux box and press the Apply 6`7`herE}
button. The map will be redisplayed, and the Normalized Flux value will be equal o9ys$vXt*
to the system transmittance. Z 9cb
Example 2: Lighting Efficiency orWF>o=1
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating n9
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a plane. You would probably choose the Surface Source raytrace option, and the xP9R
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emitted flux is equal to the flux you specified when you defined the sources. When wmK;0 )|H
you display an irradiance map, the total flux incident on the observation plane is zZ9Ei-Q
displayed at the bottom of the window. The lighting efficiency is equal to the total 4]zn,g?&
flux divided by the emitted flux. To get the lighting efficiency directly, check the h+dk2|a
Normalize to emitted flux box and press the Apply button. The map will be VwBw!,%Ab
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency rY&lx}
of the luminaire.