Normalize N|DfE{,
Normalize the map data to the total emitted flux from all sources. BAQ- 1kSz
This option allows you to have the flux and irradiance normalized to the total 6U{A6hH]
emitted flux. When this box is checked, TracePro divides the values in the `#$}P;W
irradiance map and the total flux by the emitted flux. This is especially useful for Z1 Ne p !
calculating system transmittance for an optical system, or lighting efficiency for a vIpL8B86a
lighting calculation. Z R!8hw8
Example 1: System Transmittance ILm +o$o ~
Suppose you need to calculate the system transmittance of an optical system. - +"#G?g
You would probably use the grid raytrace option, and the emitted flux is equal to &Ym):pc
the sum of the flux in all the emitted rays. When you display an irradiance map, mGE !,!s}
the system transmittance is equal to the total flux, displayed at the bottom of the x)C }
irradiance map window, divided by the emitted flux. To get the system yz68g?"
transmittance, check the Normalize to emitted flux box and press the Apply 2iNLm6"
button. The map will be redisplayed, and the Normalized Flux value will be equal &D3]O9 a0;
to the system transmittance. \\S QACN
Example 2: Lighting Efficiency e \Qys<2r
Suppose you need to calculate the lighting efficiency of a luminaire in illuminating DZ|*hQU>K
a plane. You would probably choose the Surface Source raytrace option, and the m[}P
emitted flux is equal to the flux you specified when you defined the sources. When akv i^]x
you display an irradiance map, the total flux incident on the observation plane is pyhXET
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displayed at the bottom of the window. The lighting efficiency is equal to the total n%3!)/$
flux divided by the emitted flux. To get the lighting efficiency directly, check the ?L }>9$"
Normalize to emitted flux box and press the Apply button. The map will be vx9!KWy}
redisplayed, and the Normalized Flux value will be equal to the lighting efficiency # `=Zc7gf
of the luminaire.
