算光效率 ，可以尝试使用归一化啊。 WS8m^~S@\
System Transmittance kA?a}
Suppose you need to calculate the system transmittance of an optical system. j?%^N\9
You would probably use the grid raytrace option, and the emitted flux is equal to <qN0Q7
the sum of the flux in all the emitted rays. When you display an irradiance map, V{;! vt~
the system transmittance is equal to the total flux, displayed at the bottom of the 5bM/
v
irradiance map window, divided by the emitted flux. To get the system 9K~2!<
transmittance, check the Normalize to emitted flux box and press the Apply pDb5t>
button. The map will be redisplayed, and the Normalized Flux value will be equal gO%#'Eb2
to the system transmittance.
