| lightgirl |
2008-10-24 10:03 |
算光效率 ,可以尝试使用归一化啊。 ywEDy|Wn$~ System Transmittance D
M}s0O$0 Suppose you need to calculate the system transmittance of an optical system. { V0>iN:~S You would probably use the grid raytrace option, and the emitted flux is equal to .uKx>YB} the sum of the flux in all the emitted rays. When you display an irradiance map, odpUM@OAW the system transmittance is equal to the total flux, displayed at the bottom of the F@1d%c irradiance map window, divided by the emitted flux. To get the system .gq(C9<B[ transmittance, check the Normalize to emitted flux box and press the Apply $3 4j6;oN button. The map will be redisplayed, and the Normalized Flux value will be equal 5z~\5x to the system transmittance.
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