[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， 8sI$  
我想用zemax的非序列模式仿真玻璃diffuser的透射及反射场。 <ycR/X  
我用的是thorlabs ground glass diffuser,技术参数如下： b9T6JS j  
Material: N-BK7 (Uncoated)Scratch-Dig: 80-50Clear Aperture: >90% DiameterPolished Side Surface Irregularity: <4λGaussian Intensity Profile120, 220, 600, or 1500 grit IW@phKz  
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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Built-in scattering models "szJ[ _B  
Lambertian UpSJ%%.n  
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

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Gaussian #bG6+"g{=L  
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)

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ABg k*,+ag*j  
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， 4qsxlN>4O
 
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。 S^EAE]  
如需要具体模型参数，请告知。 61gyx6v  
祝成功！ QSM3qke  
MANG2004 .O#7X  

mang2004:楼主， =#<bB)59  
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。 BB(v,W  
如需要具体模型参数，请告知。 3=} P l,  
祝成功！ Q|S>C%4?  
MANG2004 =20 +(<  
....... (2012-01-20 02:37)  [cl+AV "  

C-h?#/#?y  
同求ABg模型具体参数一份!感谢版主大大！

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mang2004:楼主， \@N~{72:k  
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。 A*81}P_  
如需要具体模型参数，请告知。 o^*:  
祝成功！ udBIEW,`  
MANG2004 yg* #~,  
....... (2012-01-20 02:37)  "Y&   

'-[hy>t  
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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