[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， ~9oS~fP?I  
我想用zemax的非序列模式仿真玻璃diffuser的透射及反射场。 eS@RA2  
我用的是thorlabs ground glass diffuser,技术参数如下： (p
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Material: N-BK7 (Uncoated)Scratch-Dig: 80-50Clear Aperture: >90% DiameterPolished Side Surface Irregularity: <4λGaussian Intensity Profile120, 220, 600, or 1500 grit m ]K.0E  
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！！

3Uag[ms

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nfDPM\FFD  
[1nI%/</>  
Built-in scattering models >/bl r}5 H  
Lambertian V7401@F  
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

C [2tH2*#  
Gaussian 5Ll[vBW  
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)

XY4s  
ABg 9$DVG/  
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)

学习，厉害厉害厉害了

mang2004:楼主， wd]Yjr#%Ii  
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。 f*
5"Jh@  
如需要具体模型参数，请告知。 Qpc{7#bp  
祝成功！ 0PfFli`2;  
MANG2004 m,KY_1%M  
....... (2012-01-20 02:37)   A:!{+  

Yx%%+c?.  
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

学习学习

mang2004:楼主， |pqpF?h5|  
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。 ?/(K7>`  
如需要具体模型参数，请告知。 {nefS\#{  
祝成功！ ".%LBs~$  
MANG2004 O+?zn:  
....... (2012-01-20 02:37)  VK;x6*Y  

bJm0  
同求ABg模型具体参数一份!感谢版主大大！

楼主， k8e"5 he  
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。 1gm/{w6O  
如需要具体模型参数，请告知。 ?d<:V.1U@  
祝成功！ ^-GX&O
Da  
MANG2004 9*;isMkq<