Normalize $NGtxZp
Normalize the map data to the total emitted flux from all sources. 8F\Msx
This option allows you to have the flux and irradiance normalized to the total S~a:1
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emitted flux. When this box is checked, TracePro divides the values in the Etr8lm E
irradiance map and the total flux by the emitted flux. This is especially useful for 6 dS1\Y
calculating system transmittance for an optical system, or lighting efficiency for a E]eqvT NH
lighting calculation. SK c
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Example 1: System Transmittance oIL+@}u7
Suppose you need to calculate the system transmittance of an optical system. $Z7|t
You would probably use the grid raytrace option, and the emitted flux is equal to +} ! F(c
the sum of the flux in all the emitted rays. When you display an irradiance map, N>6yacTB
the system transmittance is equal to the total flux, displayed at the bottom of the 2W:?#h3
irradiance map window, divided by the emitted flux. To get the system : {N3o:
transmittance, check the Normalize to emitted flux box and press the Apply iB`WXU
button. The map will be redisplayed, and the Normalized Flux value will be equal d$pf[DJQo
to the system transmittance. zju,# %
Example 2: Lighting Efficiency I`$I0
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating iQ}sp64
a plane. You would probably choose the Surface Source raytrace option, and the 7@y!R
emitted flux is equal to the flux you specified when you defined the sources. When b5 C}K
you display an irradiance map, the total flux incident on the observation plane is uuK]<h*
displayed at the bottom of the window. The lighting efficiency is equal to the total zm3MOH^a
flux divided by the emitted flux. To get the lighting efficiency directly, check the #2vG_B<M)
Normalize to emitted flux box and press the Apply button. The map will be GwpBDM k
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency HxqV[|}0u
of the luminaire.
