算光效率 ,可以尝试使用归一化啊。 J?=Ob?+
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System Transmittance +cOI`4`$
Suppose you need to calculate the system transmittance of an optical system. qt&"cw
You would probably use the grid raytrace option, and the emitted flux is equal to 'C?f"P:X{
the sum of the flux in all the emitted rays. When you display an irradiance map, }4ghT(C}$
the system transmittance is equal to the total flux, displayed at the bottom of the d/99!+r
irradiance map window, divided by the emitted flux. To get the system p<nBS"/
transmittance, check the Normalize to emitted flux box and press the Apply ;<GTtt#D
button. The map will be redisplayed, and the Normalized Flux value will be equal ;s/b_RN
to the system transmittance.