应该选择哪种内建模型（散射模型）来模拟玻璃diffuser的表面？

• The scattered ray projection vector has equal probability anywhere on the projected plane    
• The scattered intensity varies like cos(q_s)    
• The scattered intensity is independent of the incident angle

• The scattering distribution is symmetric in direction cosine space    
• s determines the width of the Gaussian distribution on the projected plane    
• Maximum value allowed for s is 5 (for s > 5, distribution is nearly Lambertian)

• Widely used to model scattering due to random isotropic surface roughness    
• Input values for A, B, and g are provided in an ASCII file (in the <data>\ABg_Data\ directory)    
• Input value limitations: A >= 0, B >= 1.0E-12 (unless g = 0, then B = 0 is allowed)

mang2004:楼主， V#Px  
从diffusion power vs. angle 曲线看，朗伯散射模型是不合适的，考虑用高斯和ABg散射模型更现实。 v,] &[`  
如需要具体模型参数，请告知。 lW!}OzE(m  
祝成功！ =QiVcw,G#  
MANG2004 %S
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....... (2012-01-20 02:37)  MzY~-74aF  

mang2004:楼主， B4<W%lm  
从diffusion power vs. angle 曲线看，朗伯散射模型是不合适的，考虑用高斯和ABg散射模型更现实。 $8{|25 *E  
如需要具体模型参数，请告知。 WCg*TL}  
祝成功！ Nf#8V|  
MANG2004 Aj9Onz,Lg  
....... (2012-01-20 02:37)  ZwV`} 2{