Normalize JY %c<
Normalize the map data to the total emitted flux from all sources. odj|" ZK
This option allows you to have the flux and irradiance normalized to the total !&19%C4
emitted flux. When this box is checked, TracePro divides the values in the yQCfn1a)
irradiance map and the total flux by the emitted flux. This is especially useful for h4.ZR={E
calculating system transmittance for an optical system, or lighting efficiency for a N5oao'7|A
lighting calculation. u^V`Ucd"R
Example 1: System Transmittance nc&V59*
Suppose you need to calculate the system transmittance of an optical system. -*tP_=- Dg
You would probably use the grid raytrace option, and the emitted flux is equal to (MbI8B>
the sum of the flux in all the emitted rays. When you display an irradiance map, <PJwBA %{
the system transmittance is equal to the total flux, displayed at the bottom of the RQ|!?\a=
irradiance map window, divided by the emitted flux. To get the system V &NOp
transmittance, check the Normalize to emitted flux box and press the Apply 5v>( xl
button. The map will be redisplayed, and the Normalized Flux value will be equal ##yi^;3Y
to the system transmittance. Ku&0bXP
Example 2: Lighting Efficiency QbS w<V
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating KVqQOh'_T
a plane. You would probably choose the Surface Source raytrace option, and the %.[GR
emitted flux is equal to the flux you specified when you defined the sources. When hv7!x=?8
you display an irradiance map, the total flux incident on the observation plane is Po=)jkW
displayed at the bottom of the window. The lighting efficiency is equal to the total b ~v
flux divided by the emitted flux. To get the lighting efficiency directly, check the qTiX;e\W
Normalize to emitted flux box and press the Apply button. The map will be _X;5ORH"
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency GD.mB[f*
of the luminaire.
