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， .'>d7  
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。 PeIKx$$Kl{  
如需要具体模型参数，请告知。 l9e=dV:pH  
祝成功！ W_6gV  
MANG2004 =ld!=II  
....... (2012-01-20 02:37)   //0Y#"  

mang2004:楼主， 7{l~\]6d  
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。 OO'zIC<z  
如需要具体模型参数，请告知。 24 .'+3  
祝成功！ ?o`:V|<v  
MANG2004 0x<
G\ l4  
....... (2012-01-20 02:37)  ]omBq<ox'Y