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， 6Z%U`,S  
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。 (X3Tav  
如需要具体模型参数，请告知。 SV~~Q_U9  
祝成功！ |VNnOM  
MANG2004 07^iP>?  
....... (2012-01-20 02:37)  A"rf
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mang2004:楼主， mSb#Nn6W  
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。 \Yc
'~2n  
如需要具体模型参数，请告知。 G'ei/Me6{  
祝成功！ xk5@d6Y{r  
MANG2004 5a|w+HO,  
....... (2012-01-20 02:37)  [k;\SXDZo