算光效率 ，可以尝试使用归一化啊。 +6:jm54
System Transmittance =Jswd
Suppose you need to calculate the system transmittance of an optical system. )oy+-1dE
You would probably use the grid raytrace option, and the emitted flux is equal to FA{(gib@9
the sum of the flux in all the emitted rays. When you display an irradiance map, &!B4v<#, U
the system transmittance is equal to the total flux, displayed at the bottom of the ; KT/;I
irradiance map window, divided by the emitted flux. To get the system H/ar: j
transmittance, check the Normalize to emitted flux box and press the Apply +g_m|LF
button. The map will be redisplayed, and the Normalized Flux value will be equal Op:$7hv
to the system transmittance.
