[求助]应该选择哪种内建模型（散射模型）来模拟玻璃diffuser的表面？ [复制链接]

请教各位GGJJ， w yP|#Z\  
我想用zemax的非序列模式仿真玻璃diffuser的透射及反射场。 )$XW~oA'  
我用的是thorlabs ground glass diffuser,技术参数如下： ?!=yp#  
Material: N-BK7 (Uncoated)Scratch-Dig: 80-50Clear Aperture: >90% DiameterPolished Side Surface Irregularity: <4λGaussian Intensity Profile120, 220, 600, or 1500 grit iB;EV8E  
请问是否可以使用zemax的内建散射模型？如果可以，应该使用哪一种？谢谢！！

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LeDty_  
W 86`R  
Built-in scattering models QH:k5V~  
Lambertian K' xN>qc  
BSDF = 1/p

• 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

e^)+bmh  
Gaussian v#1}( hb  
BSDF(x) = A*exp[-|x|²/s²]

• 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)

kH'LG!O  
ABg x%Ph``XI  
BSDF(x) = A/[B + |x|^g]

• 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)

楼主， 4D+S\S0bk  
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。
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如需要具体模型参数，请告知。 = F*SAz  
祝成功！ |>_e&}Y%L  
MANG2004 1iNq|~  

mang2004:楼主， M\m6|P  
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。 ][D/=-  
如需要具体模型参数，请告知。 \d:AV(u  
祝成功！ :t)<$dtf[  
MANG2004 -F->l5  
....... (2012-01-20 02:37)  {7F?30: ]  

:o37 V!  
同求ABg模型具体参数一份!感谢版主大大！

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mang2004:楼主， 4+2hj*I  
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。 IA(+}V  
如需要具体模型参数，请告知。 ,]cb3nP  
祝成功！ *<IQ+oat,a  
MANG2004 ;FH_qF`.  
....... (2012-01-20 02:37)  \CKf/:"  

$?Yw{%W  
同求ABg模型具体参数一份~~感谢版主~~O(∩_∩)O谢谢。我的邮箱私信给您哈

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