Normalize ).v;~yE
Normalize the map data to the total emitted flux from all sources. (B$2)yZY
This option allows you to have the flux and irradiance normalized to the total } k5pfz
emitted flux. When this box is checked, TracePro divides the values in the %#7M ~RB[
irradiance map and the total flux by the emitted flux. This is especially useful for .':SD{
calculating system transmittance for an optical system, or lighting efficiency for a rzqCQZHL5
lighting calculation. N66jFRA;x
Example 1: System Transmittance &2QN^)q
Suppose you need to calculate the system transmittance of an optical system. QQC0uta`
You would probably use the grid raytrace option, and the emitted flux is equal to 4jG@ #
the sum of the flux in all the emitted rays. When you display an irradiance map, D;Az>] >q
the system transmittance is equal to the total flux, displayed at the bottom of the )K5~r>n&
irradiance map window, divided by the emitted flux. To get the system /8Vh G|Wb
transmittance, check the Normalize to emitted flux box and press the Apply YJ3970c/M
button. The map will be redisplayed, and the Normalized Flux value will be equal UK _2i(I"e
to the system transmittance. ^~(bm$4r
Example 2: Lighting Efficiency S;|%'Sn|j9
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating !>>$'.nb@~
a plane. You would probably choose the Surface Source raytrace option, and the Oh8 ;YE-%
emitted flux is equal to the flux you specified when you defined the sources. When #lJF$
you display an irradiance map, the total flux incident on the observation plane is 4=q\CK2 ^A
displayed at the bottom of the window. The lighting efficiency is equal to the total k U3]
eh\I
flux divided by the emitted flux. To get the lighting efficiency directly, check the iT.hXzPzr*
Normalize to emitted flux box and press the Apply button. The map will be N4H nW0
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency yP-.8[;
of the luminaire.
