Normalize
xD[Gq% Normalize the map data to the total emitted flux from all sources.
V6 #K2 This option allows you to have the flux and irradiance normalized to the total
/3:q#2'v emitted flux. When this box is checked, TracePro divides the values in the
IGFR4+ irradiance map and the total flux by the emitted flux. This is especially useful for
_}VloiY calculating system transmittance for an optical system, or lighting efficiency for a
^=SD9V lighting calculation.
i?:_ :"^x Example 1: System Transmittance
s)2fG\1 Suppose you need to calculate the system transmittance of an optical system.
9n5<]Q ( You would probably use the grid raytrace option, and the emitted flux is equal to
`zt_7MD the sum of the flux in all the emitted rays. When you display an irradiance map,
z,:a8LB#[ the system transmittance is equal to the total flux, displayed at the bottom of the
`o? Ph&p} irradiance map window, divided by the emitted flux. To get the system
(%o2jroQ# transmittance, check the Normalize to emitted flux box and press the Apply
R%
,<\d7 button. The map will be redisplayed, and the Normalized Flux value will be equal
{ TRsd to the system transmittance.
?zJOh^ Example 2: Lighting Efficiency
3lq Mucr Suppose you need to calculate the lighting efficiency of a luminaire in illuminating
S&Ee,((E( a plane. You would probably choose the Surface Source raytrace option, and the
gzD@cx?V emitted flux is equal to the flux you specified when you defined the sources. When
xOHgp=#D you display an irradiance map, the total flux incident on the observation plane is
0{PzUIM,W
