算光效率 ，可以尝试使用归一化啊。 4l/~::y
System Transmittance P=9sP:[f6
Suppose you need to calculate the system transmittance of an optical system. <P Vmr2Jp"
You would probably use the grid raytrace option, and the emitted flux is equal to geqx":gpx9
the sum of the flux in all the emitted rays. When you display an irradiance map, $ 'a]lR
the system transmittance is equal to the total flux, displayed at the bottom of the `"iPJw14
irradiance map window, divided by the emitted flux. To get the system dftX$TS
transmittance, check the Normalize to emitted flux box and press the Apply 1o
button. The map will be redisplayed, and the Normalized Flux value will be equal M&/e*Ta5
to the system transmittance.
