算光效率 ，可以尝试使用归一化啊。 MO_-7,.y
System Transmittance o* fNY
Suppose you need to calculate the system transmittance of an optical system. $
$=N'Q
You would probably use the grid raytrace option, and the emitted flux is equal to 'ie+/O@G
the sum of the flux in all the emitted rays. When you display an irradiance map, K &Sz8# +
the system transmittance is equal to the total flux, displayed at the bottom of the A~@u#]]<n
irradiance map window, divided by the emitted flux. To get the system TrYt(F{t
transmittance, check the Normalize to emitted flux box and press the Apply #nD]G#>e
button. The map will be redisplayed, and the Normalized Flux value will be equal c %jW'
to the system transmittance.
