算光效率 ，可以尝试使用归一化啊。 $ VLCD
System Transmittance `&-)(#
Suppose you need to calculate the system transmittance of an optical system. muqIh!nn
You would probably use the grid raytrace option, and the emitted flux is equal to NiTLQ" ~e
the sum of the flux in all the emitted rays. When you display an irradiance map, 47 _";g@X
the system transmittance is equal to the total flux, displayed at the bottom of the zHsWj^m"
irradiance map window, divided by the emitted flux. To get the system 4 9zOhG
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transmittance, check the Normalize to emitted flux box and press the Apply t!"XQ$g'
button. The map will be redisplayed, and the Normalized Flux value will be equal h#iFp9N
to the system transmittance.
