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， U/2g N H  
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。 eiJO;%fl>l  
如需要具体模型参数，请告知。 o
Vsj Q  
祝成功！ `CI9~h@k  
MANG2004 Ek+L"7  
....... (2012-01-20 02:37)  U
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mang2004:楼主， !W/Og 5n  
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。 ](NSpU|*  
如需要具体模型参数，请告知。 tnbaU%;|J  
祝成功！ {a9Z<
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MANG2004 ;h_"5/#  
....... (2012-01-20 02:37)  2](R}