Normalize qb(#{Sw0
Normalize the map data to the total emitted flux from all sources. .w/#S-at
This option allows you to have the flux and irradiance normalized to the total >C y
emitted flux. When this box is checked, TracePro divides the values in the r`XIn#o
irradiance map and the total flux by the emitted flux. This is especially useful for |7]7~ 6l
calculating system transmittance for an optical system, or lighting efficiency for a WXu:mv,'e
lighting calculation. tW 53&q\=
Example 1: System Transmittance UMwB. *
Suppose you need to calculate the system transmittance of an optical system. 7)$U>|=
You would probably use the grid raytrace option, and the emitted flux is equal to 0cZyO$.
the sum of the flux in all the emitted rays. When you display an irradiance map, ;l>
xXSB7$
the system transmittance is equal to the total flux, displayed at the bottom of the $fhrGe
irradiance map window, divided by the emitted flux. To get the system Dww]D|M
transmittance, check the Normalize to emitted flux box and press the Apply @;kw6f:{d
button. The map will be redisplayed, and the Normalized Flux value will be equal q9.)p
to the system transmittance. au7%K5
Example 2: Lighting Efficiency (Z5=GJM?$
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating F{)YdqQ
a plane. You would probably choose the Surface Source raytrace option, and the 2
P+RfE`o
emitted flux is equal to the flux you specified when you defined the sources. When ;Q&38qI
you display an irradiance map, the total flux incident on the observation plane is u8qL?Aj^
displayed at the bottom of the window. The lighting efficiency is equal to the total O-Hu:KuIf
flux divided by the emitted flux. To get the lighting efficiency directly, check the {9U<!
Normalize to emitted flux box and press the Apply button. The map will be /Y5I0Ko Uw
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency 'EU{%\qM
of the luminaire.