算光效率 ，可以尝试使用归一化啊。 #y?iUv
System Transmittance sXpA^pT"T
Suppose you need to calculate the system transmittance of an optical system. 3fb"1z#
You would probably use the grid raytrace option, and the emitted flux is equal to ` !JcQ' u
the sum of the flux in all the emitted rays. When you display an irradiance map, ]:6M!+?(
the system transmittance is equal to the total flux, displayed at the bottom of the `L. kyL
irradiance map window, divided by the emitted flux. To get the system 2brxV'tk
transmittance, check the Normalize to emitted flux box and press the Apply TsvF~Gdp
button. The map will be redisplayed, and the Normalized Flux value will be equal _>k& ,p]y
to the system transmittance.
