Normalize k+D"LA%J
Normalize the map data to the total emitted flux from all sources. =
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This option allows you to have the flux and irradiance normalized to the total ^z%ShmM&LZ
emitted flux. When this box is checked, TracePro divides the values in the ,@#)) 2<RK
irradiance map and the total flux by the emitted flux. This is especially useful for Duu)8ru
calculating system transmittance for an optical system, or lighting efficiency for a Q^H8gsv
lighting calculation. ~g|Z6-?4Jj
Example 1: System Transmittance 5S
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Suppose you need to calculate the system transmittance of an optical system. pmIOV~K
You would probably use the grid raytrace option, and the emitted flux is equal to R|&Rq(ow"
the sum of the flux in all the emitted rays. When you display an irradiance map, rEF0A &5
the system transmittance is equal to the total flux, displayed at the bottom of the fy6< KEea
irradiance map window, divided by the emitted flux. To get the system ?m(]@6qa
transmittance, check the Normalize to emitted flux box and press the Apply T|%pvTI e
button. The map will be redisplayed, and the Normalized Flux value will be equal t{ R\\j
to the system transmittance. L^{1dVGWNa
Example 2: Lighting Efficiency BIk0n;Kz<L
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating VPh0{(O^=
a plane. You would probably choose the Surface Source raytrace option, and the djk?;^ 8
emitted flux is equal to the flux you specified when you defined the sources. When WP5 QA8`3
you display an irradiance map, the total flux incident on the observation plane is OA BMI gX
displayed at the bottom of the window. The lighting efficiency is equal to the total Oe/&Ryj=mm
flux divided by the emitted flux. To get the lighting efficiency directly, check the `Nnaw+<]
Normalize to emitted flux box and press the Apply button. The map will be =Lc!L
!(,b
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency >STAPrBp+
of the luminaire.
