Normalize ] C_g: |q
Normalize the map data to the total emitted flux from all sources. ,0%P 3
This option allows you to have the flux and irradiance normalized to the total 8 P85qa@w
emitted flux. When this box is checked, TracePro divides the values in the y
E-H-r~I
irradiance map and the total flux by the emitted flux. This is especially useful for 3IQ)%EN
calculating system transmittance for an optical system, or lighting efficiency for a 0KO_bF#EB=
lighting calculation. x=Z\c,@O
Example 1: System Transmittance ..6 : _{wg
Suppose you need to calculate the system transmittance of an optical system. 8aZuI |z
You would probably use the grid raytrace option, and the emitted flux is equal to
&SfJwdG*=
the sum of the flux in all the emitted rays. When you display an irradiance map, _Qg^>}]A1
the system transmittance is equal to the total flux, displayed at the bottom of the &Q O~p3M
irradiance map window, divided by the emitted flux. To get the system yep`~``_
transmittance, check the Normalize to emitted flux box and press the Apply oV utHt
button. The map will be redisplayed, and the Normalized Flux value will be equal ?;@xAj
to the system transmittance. X{zg-k(@
Example 2: Lighting Efficiency T- ID {i
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating g\;AU2?p7
a plane. You would probably choose the Surface Source raytrace option, and the yz r>]"o
emitted flux is equal to the flux you specified when you defined the sources. When `RDl k
you display an irradiance map, the total flux incident on the observation plane is N p9N# m?
displayed at the bottom of the window. The lighting efficiency is equal to the total z2Sp
flux divided by the emitted flux. To get the lighting efficiency directly, check the $ s<,xY 9
Normalize to emitted flux box and press the Apply button. The map will be ktLXL;~X
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency <Z5ak4P
of the luminaire.
