算光效率 ，可以尝试使用归一化啊。 E&/D%} Wl
System Transmittance \sIRV}Tk}N
Suppose you need to calculate the system transmittance of an optical system. QPH2TXw
You would probably use the grid raytrace option, and the emitted flux is equal to <h/\)bPB
the sum of the flux in all the emitted rays. When you display an irradiance map, RPvOup
the system transmittance is equal to the total flux, displayed at the bottom of the KJwkkCE/=
irradiance map window, divided by the emitted flux. To get the system I54O9Aoy
transmittance, check the Normalize to emitted flux box and press the Apply ,T{(t@
button. The map will be redisplayed, and the Normalized Flux value will be equal TXi$Q%0W
to the system transmittance.
