算光效率 ，可以尝试使用归一化啊。 wCU&Xb$F
System Transmittance o[6vxTH
Suppose you need to calculate the system transmittance of an optical system. *qO ]v9 j
You would probably use the grid raytrace option, and the emitted flux is equal to 6R-C0_'h
the sum of the flux in all the emitted rays. When you display an irradiance map, 4C,kA+P
the system transmittance is equal to the total flux, displayed at the bottom of the cVB |sYdf
irradiance map window, divided by the emitted flux. To get the system 3b|7[7}&
transmittance, check the Normalize to emitted flux box and press the Apply 2Ft8dfdm`
button. The map will be redisplayed, and the Normalized Flux value will be equal sP6 ):h
to the system transmittance.
