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    [讨论]公差分析结果的疑问 [复制链接]

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    离线sansummer
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    只看楼主 倒序阅读 楼主  发表于: 2011-06-21
    我现在在初学zemax的公差分析，找了一个双胶合透镜 0%,?z`UY  
    n36iY'<)G  
    sE!g!ht  
    }]<|`FNc  
    然后添加了默认公差分析，基本没变 gv i!|!M=  
    rV?@Kgxi  
     ':DL  
    :"b:uQ  
    然后运行分析的结果如下： -3 "<znv  
    G]mD_J1$  
    Analysis of Tolerances }wI +e Mr  
    7s;;2<k;_  
    File : E:\光学设计资料\zemax练习\f500.ZMX =EU;%f  
    Title: tCA0H\';  
    Date : TUE JUN 21 2011 4Y4zBD=<  
    NgF"1E  
    Units are Millimeters. 1Tev&J  
    All changes are computed using linear differences. K}GR U)  
    (uC@cVk P  
    Paraxial Focus compensation only. Md8<IFi9]Q  
    $@L2zl1  
    WARNING: Solves should be removed prior to tolerancing. ^+k= ;nl  
    nKI?Sc  
    Mnemonics: =)*Z rD  
    TFRN: Tolerance on curvature in fringes. Lr= ^0  
    TTHI: Tolerance on thickness. yJ6g{#X4K<  
    TSDX: Tolerance on surface decentering in x. E}<i?;  
    TSDY: Tolerance on surface decentering in y. C@<gCMj,"  
    TSTX: Tolerance on surface tilt in x (degrees). A5]yC\*zt  
    TSTY: Tolerance on surface tilt in y (degrees). oq|`;k   
    TIRR: Tolerance on irregularity (fringes). 8!@}\6qM  
    TIND: Tolerance on Nd index of refraction. MD3iWgM  
    TEDX: Tolerance on element decentering in x. 7#7|+%W0  
    TEDY: Tolerance on element decentering in y. 7W5Cm\  
    TETX: Tolerance on element tilt in x (degrees). @P i]kWW})  
    TETY: Tolerance on element tilt in y (degrees). 1'8-+?r  
    ,mC=MpfzJ  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 5w+&plIJ  
    |WfL'_?$  
    WARNING: Boundary constraints on compensators will be ignored. 6s ~!B{Q  
    $xF[j9nM  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm u,N<U t  
    Mode                : Sensitivities R|` `A5zQ  
    Sampling            : 2 VWzuV&;P  
    Nominal Criterion   : 0.54403234 \w(0k^<7  
    Test Wavelength     : 0.6328 :2')`xT  
    Ww#!-,*]o  
    B7'yc`)H  
    Fields: XY Symmetric Angle in degrees FV,aQ#  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY NzeiGj  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 9]1LwX!M2  
     C ?'s  
    Sensitivity Analysis: rw0s$~'  
    cRNVqMpg  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 6o5,d]  
    Type                      Value      Criterion        Change          Value      Criterion        Change 2iOYC0`!  
    Fringe tolerance on surface 1 :Gx5vo  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 uY/C iTWr  
    Change in Focus                :      -0.000000                            0.000000 XD_!5+\H1  
    Fringe tolerance on surface 2 |`{$Ego:  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Q~P|=*  
    Change in Focus                :       0.000000                            0.000000 y7GgTC/H  
    Fringe tolerance on surface 3 jB0Ts;5  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ugTnz$  
    Change in Focus                :      -0.000000                            0.000000 jpTk@  
    Thickness tolerance on surface 1 L .}sN.  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 U}5]Vm$]  
    Change in Focus                :       0.000000                            0.000000 ?I"?J/zm  
    Thickness tolerance on surface 2 UISsiiG(  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 @L0)k^:  
    Change in Focus                :       0.000000                           -0.000000 v$g\]QS p  
    Decenter X tolerance on surfaces 1 through 3 .WuSW[g  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 2$A"{2G  
    Change in Focus                :       0.000000                            0.000000 rq}xuSFI  
    Decenter Y tolerance on surfaces 1 through 3 -dfs8[i  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,068IEs  
    Change in Focus                :       0.000000                            0.000000 vz1I/IdTd  
    Tilt X tolerance on surfaces 1 through 3 (degrees) {k[dg0UV  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 [ q[2\F?CE  
    Change in Focus                :       0.000000                            0.000000  a3a:H  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) P_75-0G  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 s~ o\j/  
    Change in Focus                :       0.000000                            0.000000 {SRD\&J[  
    Decenter X tolerance on surface 1 ,]das  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 kmtkh "  
    Change in Focus                :       0.000000                            0.000000 JRj{Q 1J  
    Decenter Y tolerance on surface 1 t%f>*}*P*  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 tAujm*|&  
    Change in Focus                :       0.000000                            0.000000 FT J{  
    Tilt X tolerance on surface (degrees) 1 vGI)c&C>  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 /;E=)(w  
    Change in Focus                :       0.000000                            0.000000 YNKvR  
    Tilt Y tolerance on surface (degrees) 1 R|Uu  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ap"pQ[t;  
    Change in Focus                :       0.000000                            0.000000 tT]mMlKJ  
    Decenter X tolerance on surface 2 &0J8I Cd=  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %[azMlp<  
    Change in Focus                :       0.000000                            0.000000 K*4ib/'E a  
    Decenter Y tolerance on surface 2 s vS)7]{cU  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7m?fv Ky  
    Change in Focus                :       0.000000                            0.000000 b' ~WS4xlD  
    Tilt X tolerance on surface (degrees) 2 bMv[.Z@v(  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 %P(2uesd  
    Change in Focus                :       0.000000                            0.000000 HYY+Fv5  
    Tilt Y tolerance on surface (degrees) 2 q]SH'Wd  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 i<=2 L?[.I  
    Change in Focus                :       0.000000                            0.000000 :()K2<E  
    Decenter X tolerance on surface 3 LZE9]Gd  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 I#7H)^us  
    Change in Focus                :       0.000000                            0.000000 0(&Rm R  
    Decenter Y tolerance on surface 3 s%6L94\t  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 2t>>08T  
    Change in Focus                :       0.000000                            0.000000 78?cCj{e  
    Tilt X tolerance on surface (degrees) 3 Wc;N;K52   
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 :lmimAMt  
    Change in Focus                :       0.000000                            0.000000 =5YbK1Q^  
    Tilt Y tolerance on surface (degrees) 3 sN5Mm8~  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 W2M[w_~QE  
    Change in Focus                :       0.000000                            0.000000 $Q,]2/o6n  
    Irregularity of surface 1 in fringes wu b7w#  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 [MKt\(  
    Change in Focus                :       0.000000                            0.000000 |8GLS4.]t  
    Irregularity of surface 2 in fringes +$/NTUOP  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 wnQi5P+  
    Change in Focus                :       0.000000                            0.000000 "1%k"+&  
    Irregularity of surface 3 in fringes mS0;2x U  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 &>K|F >7q  
    Change in Focus                :       0.000000                            0.000000 7vI ROK~  
    Index tolerance on surface 1 ~~I]SI k{  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Ay%]l| Gm  
    Change in Focus                :       0.000000                            0.000000 _.%g'=14f  
    Index tolerance on surface 2 w=0zVh_`(  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 P*hYh5a  
    Change in Focus                :       0.000000                           -0.000000 h53G$Ol.  
    Ln/*lLIOb  
    Worst offenders: XIl#0-E0X  
    Type                      Value      Criterion        Change s:z  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 *e<'|Kq  
    TSTY   2             0.20000000     0.35349910    -0.19053324 !vHCftKel  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 7;?7q  
    TSTX   2             0.20000000     0.35349910    -0.19053324 2^U?Ztth6  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 %?8.UW\m  
    TSTY   1             0.20000000     0.42678383    -0.11724851 %+UTs'I  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 z(>:LX"xz  
    TSTX   1             0.20000000     0.42678383    -0.11724851 -OKXfN]  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 gI@nE:(m  
    TSTY   3             0.20000000     0.42861670    -0.11541563 t$R0UprK  
    /1=x8Sb  
    Estimated Performance Changes based upon Root-Sum-Square method: v`:!$U* H=  
    Nominal MTF                 :     0.54403234 `q1-yH0~4  
    Estimated change            :    -0.36299231 m93{K7O2e  
    Estimated MTF               :     0.18104003 H$ :BJ$x@  
    ^?0?*  
    Compensator Statistics: %0 U@k!lP  
    Change in back focus: oDG BC  
    Minimum            :        -0.000000 dKw[#(m5v  
    Maximum            :         0.000000 2o W'B^-  
    Mean               :        -0.000000 DLe>EU;vS  
    Standard Deviation :         0.000000 !!Yf>0u#  
    ygUX]*m!  
    Monte Carlo Analysis: m+ #G*  
    Number of trials: 20 blaXAqe  
    Uf?+oc'{  
    Initial Statistics: Normal Distribution 6r[pOl:  
    _LWMz=U=J/  
      Trial       Criterion        Change j2 >WHh  
          1     0.42804416    -0.11598818 M[_Ptqjb  
    Change in Focus                :      -0.400171 xq%BR[1  
          2     0.54384387    -0.00018847 p-7?S^!l  
    Change in Focus                :       1.018470 LVL#qNIu  
          3     0.44510003    -0.09893230 u(ETc* D]  
    Change in Focus                :      -0.601922 t6)R 37  
          4     0.18154684    -0.36248550 " ;\EU4R  
    Change in Focus                :       0.920681 qa6HwlC1  
          5     0.28665820    -0.25737414 xz7CnW1  
    Change in Focus                :       1.253875 j1ap,<\.k  
          6     0.21263372    -0.33139862 *$mb~k^R  
    Change in Focus                :      -0.903878 Ie8K [ >  
          7     0.40051424    -0.14351809 u=(.}  
    Change in Focus                :      -1.354815 M?['HoRo  
          8     0.48754161    -0.05649072 x3jjtjf  
    Change in Focus                :       0.215922 CwO$EL:[`  
          9     0.40357468    -0.14045766 wvr`~e  
    Change in Focus                :       0.281783 .wtYost v  
         10     0.26315315    -0.28087919 Nvd(Tad  
    Change in Focus                :      -1.048393 PK_2  
         11     0.26120585    -0.28282649 ;b_<5S  
    Change in Focus                :       1.017611 ;\T~Hc}&;  
         12     0.24033815    -0.30369419 B5;94YIN  
    Change in Focus                :      -0.109292 ZCfd<NS?  
         13     0.37164046    -0.17239188 X{h[    
    Change in Focus                :      -0.692430 V:gXP1P  
         14     0.48597489    -0.05805744 nyG5sWMpe  
    Change in Focus                :      -0.662040 wFBSux$  
         15     0.21462327    -0.32940907 QxBH{TG  
    Change in Focus                :       1.611296 ~AF' 6"A  
         16     0.43378226    -0.11025008 aZ ta%3`)  
    Change in Focus                :      -0.640081 h?GE-F  
         17     0.39321881    -0.15081353 W:2]d  
    Change in Focus                :       0.914906 .e5rKkkT  
         18     0.20692530    -0.33710703 G/KTF2wl7  
    Change in Focus                :       0.801607 SMQC/t]HT  
         19     0.51374068    -0.03029165 ^4{{ +G)j  
    Change in Focus                :       0.947293 6(q8y(.`  
         20     0.38013374    -0.16389860 g_"B:DR  
    Change in Focus                :       0.667010 G[P<!6Id!p  
    !zfV (&  
    Number of traceable Monte Carlo files generated: 20 7TZ,bD_  
    pWb8X}M  
    Nominal     0.54403234 VB4ir\nF  
    Best        0.54384387    Trial     2 rFto1m  
    Worst       0.18154684    Trial     4 H.[(`wi!I  
    Mean        0.35770970 ,Fu[o6x<^  
    Std Dev     0.11156454 .5#+)] l  
    01+TVWKX  
    q6P5:@  
    Compensator Statistics: TZObjSm_v  
    Change in back focus: P_ b8_ydU  
    Minimum            :        -1.354815 6N.MC B^  
    Maximum            :         1.611296 2j[; M-3  
    Mean               :         0.161872 @^b>S6d "  
    Standard Deviation :         0.869664 o~VZ%B  
    <!?ZH"F0  
    90% >       0.20977951               /8lmNA  
    80% >       0.22748071               F[0w*i&u5  
    50% >       0.38667627               ;]%Syrzp  
    20% >       0.46553746               1]7v3m  
    10% >       0.50064115                b .xG'  
    s>ZlW:jY  
    End of Run. nTz( {q  
    }wGy#!CSza  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 q9(hn_X@/  
    /,ISx }  
    sg_%=;  
    是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 -.UUa  
    :U'Oc3l#Y  
    不吝赐教
     
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    只看该作者 1楼 发表于: 2011-06-21
    我又试了试，原来是得根据上面的结果不断修改公差，放松或者变紧，然后在做公差分析，不断提高蒙特卡罗的结果。但是比如就拿我这个来说，理想是达到30lp处>0.6，那么实际做蒙特卡罗公差分析时，百分之多少以上的MTF是合格的呢？
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 ljk,R G  
    80% >       0.22748071                 l gTw>r   
    50% >       0.38667627                 5Fa/Q>N  
    20% >       0.46553746                 X"v)9 p  
    10% >       0.50064115 7iH%1f  
    I<$m%  
    最后这个数值是MTF值呢，还是MTF的公差？ w;V+)r?w  
    UAtdRVi]M  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   }j|YX&`p  
    SHe547X1  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : t-$Hti7Lk  
    90% >       0.20977951                 y'U-y"7y  
    80% >       0.22748071                 !jyy`q=  
    50% >       0.38667627                 bDM;7fFp$  
    20% >       0.46553746                 =FXq=x%9+  
    10% >       0.50064115 P(Q}r 7F~(  
    ....... =fy'w3m  
    F]`_akE  
    zr[|~-  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   udGZ%Mr_  
    Mode                : Sensitivities <l"rnM%  
    Sampling            : 2 TWT h!  
    Nominal Criterion   : 0.54403234 ]m"6a-,`  
    Test Wavelength     : 0.6328 JzuP A I  
    %Y<3v \`_  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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    只看该作者 6楼 发表于: 2011-06-24
    回 5楼(天地大同) 的帖子
    谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ 'w~e>$WI  
    "IKbb7x  
    这个评价标准和我理想的设计结果的0.6有什么联系吗，另外这个 0.54403234  是这么来的？
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    只看该作者 7楼 发表于: 2011-06-24
    回 6楼(sansummer) 的帖子
    你试试把原来的系统波长改成632.8nm，看看Geometric MTF    30 per mm 的mtf值是不是0.54403234
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    只看该作者 8楼 发表于: 2011-06-24
    回 7楼(天地大同) 的帖子
    啊...这倒也是。换了波长的确可能有所变化。另外还有就是如果现在百分比太低，我是否应该考虑把最敏感的公差再紧一些，就会好了？
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    只看该作者 9楼 发表于: 2011-06-28
    回 8楼(sansummer) 的帖子
    恩，多多尝试
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