Normalize %?!TqJT?{
Normalize the map data to the total emitted flux from all sources. qz|xow/ns@
This option allows you to have the flux and irradiance normalized to the total L7s
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emitted flux. When this box is checked, TracePro divides the values in the _&PF (/w
irradiance map and the total flux by the emitted flux. This is especially useful for @;>Xy!G
calculating system transmittance for an optical system, or lighting efficiency for a 9D51@b6k
lighting calculation. xd]7?L@h.I
Example 1: System Transmittance |}<!O@<|
Suppose you need to calculate the system transmittance of an optical system. I.)9:7
You would probably use the grid raytrace option, and the emitted flux is equal to GD#W= O
the sum of the flux in all the emitted rays. When you display an irradiance map, CV *
the system transmittance is equal to the total flux, displayed at the bottom of the <}1GYeP
irradiance map window, divided by the emitted flux. To get the system l# |M.V6G
transmittance, check the Normalize to emitted flux box and press the Apply _kQOax{c/
button. The map will be redisplayed, and the Normalized Flux value will be equal Px?0)^"2
to the system transmittance. gBo~NLrf
Example 2: Lighting Efficiency Xvn \~Vr
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating l7uEUMV
a plane. You would probably choose the Surface Source raytrace option, and the >~@ABLp 6
emitted flux is equal to the flux you specified when you defined the sources. When
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you display an irradiance map, the total flux incident on the observation plane is \D}$foH g
displayed at the bottom of the window. The lighting efficiency is equal to the total 9, 0}}3J
flux divided by the emitted flux. To get the lighting efficiency directly, check the qi m |=
Normalize to emitted flux box and press the Apply button. The map will be a >Xq
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency qF4DX$$<
of the luminaire.
