請教各位GGJJ， wO.B~`y  
我想用zemax的非序列模式仿真玻璃diffuser的透射及反射場。 @^HwrwRA  
我用的是thorlabs ground glass diffuser,技術(shù)參數(shù)如下： \(9p&"Q-  
Material: N-BK7 (Uncoated)Scratch-Dig: 80-50Clear Aperture: >90% DiameterPolished Side Surface Irregularity: <4λGaussian Intensity Profile120, 220, 600, or 1500 grit #_p  
請問是否可以使用zemax的內(nèi)建散射模型？如果可以，應(yīng)該使用哪一種？謝謝��！

$~o3}&az

Lw*1 .~

+3?`M<L0  
}~GV'7d1  
Built-in scattering models p2a?9R  
Lambertian >Jiij  
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

ORtg>az\%  
Gaussian ?1DUNZ6  
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)

V<W02\Hs  
ABg !h/
dZ`#  
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)

樓主， iUpSN0XkMM  
從diffusion power vs. angle 曲線看，朗伯散射模型是不合適的，考慮用高斯和ABg散射模型更現(xiàn)實(shí)。 <EOg,"F  
如需要具體模型參數(shù)，請告知。 z.{HD9TD  
祝成功！ y8}"DfU.  
MANG2004 l#|J rU!  

mang2004:樓主， (9Fabo\SH  
從diffusion power vs. angle 曲線看，朗伯散射模型是不合適的，考慮用高斯和ABg散射模型更現(xiàn)實(shí)。 _K*\}un2  
如需要具體模型參數(shù)，請告知。 +R3\cRM  
祝成功！ "u .)X3  
MANG2004 ~%