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， ytr~} M%  
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。 m`E8gVC  
如需要具体模型参数，请告知。 ;%hlh)k$  
祝成功！ ad }^Dj/  
MANG2004 L@9"6&  
....... (2012-01-20 02:37)  7J7uHl`yq`  

mang2004:楼主， SP97Q-  
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。 r8}GiP0|  
如需要具体模型参数，请告知。 LezM=om.  
祝成功！ }q)oLC  
MANG2004 jx+%X\zokA  
....... (2012-01-20 02:37)  .COY%fz