| lightgirl |
2008-10-24 10:03 |
算光效率 ,可以尝试使用归一化啊。 H]dN'c- System Transmittance wqE2n Suppose you need to calculate the system transmittance of an optical system. $0M7P5]N*G You would probably use the grid raytrace option, and the emitted flux is equal to #)T'a the sum of the flux in all the emitted rays. When you display an irradiance map, Q."rE"}< the system transmittance is equal to the total flux, displayed at the bottom of the ]VN1Y) irradiance map window, divided by the emitted flux. To get the system /PBK:B transmittance, check the Normalize to emitted flux box and press the Apply aXbj pb+ button. The map will be redisplayed, and the Normalized Flux value will be equal odvUU#l to the system transmittance.
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