算光效率 ，可以尝试使用归一化啊。 ,<7f5qg "'
System Transmittance #Uu"olX7
Suppose you need to calculate the system transmittance of an optical system. psVRdluS
You would probably use the grid raytrace option, and the emitted flux is equal to O"Q=66.CR
the sum of the flux in all the emitted rays. When you display an irradiance map, &#l M$7/
the system transmittance is equal to the total flux, displayed at the bottom of the OH w6#N$\
irradiance map window, divided by the emitted flux. To get the system kn.z8%^ (
transmittance, check the Normalize to emitted flux box and press the Apply w[&BY
button. The map will be redisplayed, and the Normalized Flux value will be equal jg(A_V
to the system transmittance.
