lightgirl |
2008-10-24 10:03 |
算光效率 ,可以尝试使用归一化啊。 -S]ercar System Transmittance T U_'1 Suppose you need to calculate the system transmittance of an optical system. 0O'M^[=d.8 You would probably use the grid raytrace option, and the emitted flux is equal to 7#"NKxb the sum of the flux in all the emitted rays. When you display an irradiance map, hb*Y-$Zp the system transmittance is equal to the total flux, displayed at the bottom of the ^jL)<y4` irradiance map window, divided by the emitted flux. To get the system [\Wl~
a l transmittance, check the Normalize to emitted flux box and press the Apply qfT9g>EF button. The map will be redisplayed, and the Normalized Flux value will be equal -<x% to the system transmittance.
|
|