[求助]请帮忙写个圆孔衍射的程序 [复制链接]

偶是新手，不明白里面的衍射是怎么弄的，请各位大侠帮忙写个圆孔衍射的程序看看行吗？在DETECTOR显示出衍射图样来？希望把程序命令帖出来。 qNC.|R  
谢谢！ 2EQ:mjxk  
自己根据例子改了一个，但是发现出来的图像和matlab的不一样，相差很大，觉得应该是错了，请大家帮忙看看呗？ ~Jp\'P7*  
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SYSTEM NEW v;?t=}NwF  
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PI=4*ATAN(1) OHp 121  
COATING PROPERTIES 8l+\Qyj  
  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  'ABSORB' hh <=D.u  
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    INTERFACE COATING ABSORB AIR SCHOTT_BK7 c5R58#XK=  
    FACETS 4 4 %CD}A%~  
    REDEFINE COLOR 1 `)1_^# k  
    ROTATE X 90 Z3~$"V*ZB{  
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PARABASAL 4 iN<&  
BEAMS COHERENT DIFFRACT vZhN% DfY  
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WIDTHS 1.6 E
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DISPLAY B9>3xxp(by  
  PICTURE .FXq4who  
RETURN

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  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0   'TRANSMIT' &
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  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0   'REFLECT' `N_NzH  
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!! DETECTOR 8;5 UO,`T  
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  OBJECT 'DETECTOR' 3G~ T_J&  
    INTERFACE COATING ABSORB AIR SCHOTT_BK7 r\F`xtR(  
    FACETS 4 4 >/.-N  
    REDEFINE COLOR 1 LrX7WI  
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PARABASAL 4 K=;z&E=<c  
BEAMS COHERENT DIFFRACT GO.mT/rB  
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WIDTHS 1.6 ?dl7!I@<E<  
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SPREAD NORMAL Smzy EMT
 
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SPREAD NORMAL {9q~bt  
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DISPLAY )@Fuw*  
  PICTURE AifnC4  
RETURN CPWe (
 
自己根据例子改的 Cb~_{$A  
为什么出来的衍射图和MATLAB的不一样的 NRe{0U}nO  
相差很大 |QHDg(   
自己觉得不对 Zg"g/I.+d  
请高手指点一下