Normalize 5qkG~YO-
Normalize the map data to the total emitted flux from all sources. ?[Od.
This option allows you to have the flux and irradiance normalized to the total VLW<"7I 6\
emitted flux. When this box is checked, TracePro divides the values in the Z~^)B8
irradiance map and the total flux by the emitted flux. This is especially useful for .OM m"RtK
calculating system transmittance for an optical system, or lighting efficiency for a f&glY`s#
lighting calculation. dxkq*
Example 1: System Transmittance ANEW^\
Suppose you need to calculate the system transmittance of an optical system. A-\OB
Nh
You would probably use the grid raytrace option, and the emitted flux is equal to B&&:A4
the sum of the flux in all the emitted rays. When you display an irradiance map, Hu|;cbK
the system transmittance is equal to the total flux, displayed at the bottom of the DVxW2J
irradiance map window, divided by the emitted flux. To get the system ^)Xl7d|m+
transmittance, check the Normalize to emitted flux box and press the Apply 5v4
,YHD
button. The map will be redisplayed, and the Normalized Flux value will be equal !(PAUWS@
to the system transmittance. Jg=[!j0(
Example 2: Lighting Efficiency v*'dA^Q
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating ^ZX 71-
a plane. You would probably choose the Surface Source raytrace option, and the 59:Xu%Hp
emitted flux is equal to the flux you specified when you defined the sources. When )J4XM(
you display an irradiance map, the total flux incident on the observation plane is <zE,T@c
displayed at the bottom of the window. The lighting efficiency is equal to the total smQ<lwA
flux divided by the emitted flux. To get the lighting efficiency directly, check the sf4NKe2*
Normalize to emitted flux box and press the Apply button. The map will be !6hUTjhW7z
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency H%`Ja('"p
of the luminaire.