算光效率 ，可以尝试使用归一化啊。 {kpF etXt?
System Transmittance l f>/
Suppose you need to calculate the system transmittance of an optical system. ~lj[> |\Oj
You would probably use the grid raytrace option, and the emitted flux is equal to ?:"ABkL|+Y
the sum of the flux in all the emitted rays. When you display an irradiance map, mLhM_=
the system transmittance is equal to the total flux, displayed at the bottom of the K[z)ts-
irradiance map window, divided by the emitted flux. To get the system rwP#Yj[BK+
transmittance, check the Normalize to emitted flux box and press the Apply -<#)
]um
button. The map will be redisplayed, and the Normalized Flux value will be equal 7gC?<;\0
to the system transmittance.
