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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 UR[UZ4G  
    j8ac8J,}c  
    .3xf!E*  
    [ _&z+  
    然后添加了默认公差分析，基本没变  ;.~D!  
    gy/bA  
    ES[]A&tf  
    4TaHS!9  
    然后运行分析的结果如下： 6H|&HV(!R  
    _(KzjOMt  
    Analysis of Tolerances `(@{t:L  
    >+*lG>!z  
    File : E:\光学设计资料\zemax练习\f500.ZMX -4S4I  
    Title: IVG77+O# }  
    Date : TUE JUN 21 2011 M =GF@C;b  
    e`% <D[-  
    Units are Millimeters. alZ83^YN'  
    All changes are computed using linear differences. 6yMaW eT  
    BNbz{tbX"  
    Paraxial Focus compensation only. 0JLQ.%_  
    *BQy$dfE  
    WARNING: Solves should be removed prior to tolerancing. Q_|Lv&  
    u:\DqdlU`  
    Mnemonics: ]DI%7kw'  
    TFRN: Tolerance on curvature in fringes. R%;dt<Dh  
    TTHI: Tolerance on thickness. M V~3~h8  
    TSDX: Tolerance on surface decentering in x. n*N`].r#{=  
    TSDY: Tolerance on surface decentering in y. CSMx]jbb  
    TSTX: Tolerance on surface tilt in x (degrees). \2)~dV:6+  
    TSTY: Tolerance on surface tilt in y (degrees). _Ns_$_  
    TIRR: Tolerance on irregularity (fringes). AJt4I W@  
    TIND: Tolerance on Nd index of refraction. ks<+gL{K|i  
    TEDX: Tolerance on element decentering in x. l`*R !\  
    TEDY: Tolerance on element decentering in y. 7]8apei|  
    TETX: Tolerance on element tilt in x (degrees). Br"K{g?  
    TETY: Tolerance on element tilt in y (degrees). Bet?]4\_  
    wmFS+F4`2  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. /3 d6Og  
    S{qsq\X  
    WARNING: Boundary constraints on compensators will be ignored. 9 H~OC8R:  
    `qj24ehc  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm fMRMQR=6B  
    Mode                : Sensitivities f_tC:T4a  
    Sampling            : 2 /QVhT  
    Nominal Criterion   : 0.54403234 &y:SK)  
    Test Wavelength     : 0.6328 5=P*<Dnj  
    CrEC@5 j  
    F2mW<REg{  
    Fields: XY Symmetric Angle in degrees >3y:cPTM5  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Z<$ y)bf  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 (/Dr=D{ `  
    &, WQr  
    Sensitivity Analysis: Z`kI6  
    hN.{H:skL)  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 1Ozy;;\-9  
    Type                      Value      Criterion        Change          Value      Criterion        Change RL1cx|  
    Fringe tolerance on surface 1 |j7{zsH  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 |ea}+N  
    Change in Focus                :      -0.000000                            0.000000 k54Vh=p  
    Fringe tolerance on surface 2 47 9yG/+\  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 of?'FrU  
    Change in Focus                :       0.000000                            0.000000 2k"!o~s^  
    Fringe tolerance on surface 3 # ,27,#  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 qX!P:M  
    Change in Focus                :      -0.000000                            0.000000 PkxhR;4  
    Thickness tolerance on surface 1 "9yQDS:  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 f;%\4TH?  
    Change in Focus                :       0.000000                            0.000000 Y` tB5P  
    Thickness tolerance on surface 2 l*<RKY8  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Fs;_z9ej-u  
    Change in Focus                :       0.000000                           -0.000000 :/FT>UCL  
    Decenter X tolerance on surfaces 1 through 3 ;Fm7!@u^0  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 e'1}5Ky  
    Change in Focus                :       0.000000                            0.000000 eEMU,zCl  
    Decenter Y tolerance on surfaces 1 through 3 44(l1xEN+  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ':_1z5  
    Change in Focus                :       0.000000                            0.000000 ayoqitXD?  
    Tilt X tolerance on surfaces 1 through 3 (degrees) /|2 hW`G  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 /l$>W<}@  
    Change in Focus                :       0.000000                            0.000000 tJ!s/|u(  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) p1(<F_Kta  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 e-e*%  
    Change in Focus                :       0.000000                            0.000000 mA>u6Rlc  
    Decenter X tolerance on surface 1 e`Vb.E)  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ![4<6/2gy  
    Change in Focus                :       0.000000                            0.000000 '"14(BvW  
    Decenter Y tolerance on surface 1 q3-V_~5^/z  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 W=@]YI  
    Change in Focus                :       0.000000                            0.000000 dUL3UY3  
    Tilt X tolerance on surface (degrees) 1 k874tD  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 [`Dv#  
    Change in Focus                :       0.000000                            0.000000 .l(t\BfE~  
    Tilt Y tolerance on surface (degrees) 1 "OO"Ab{t  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 >@9>bI+Q  
    Change in Focus                :       0.000000                            0.000000 WaYT7 :  
    Decenter X tolerance on surface 2 Erd)P  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 1lLL9l{UVw  
    Change in Focus                :       0.000000                            0.000000 ([a[ fi  
    Decenter Y tolerance on surface 2 Pf?y!d K<  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 vTY+J$N__  
    Change in Focus                :       0.000000                            0.000000 Km9Y_`?  
    Tilt X tolerance on surface (degrees) 2 c>nXnN  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 W_ hckq.  
    Change in Focus                :       0.000000                            0.000000 ({_Dg43O'[  
    Tilt Y tolerance on surface (degrees) 2 }D>nXhO&  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 1JXa/f+  
    Change in Focus                :       0.000000                            0.000000 *iVCHQ~  
    Decenter X tolerance on surface 3 &E&e5(&$  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 llP 5  
    Change in Focus                :       0.000000                            0.000000 :;(zA_-  
    Decenter Y tolerance on surface 3 dy%#E2f  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 w0i v\yIRQ  
    Change in Focus                :       0.000000                            0.000000 \E3e vU  
    Tilt X tolerance on surface (degrees) 3 s9'lw'  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 KixS)sG  
    Change in Focus                :       0.000000                            0.000000 o|?bvFC  
    Tilt Y tolerance on surface (degrees) 3 E Z}c8b  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 N1O.U"L;  
    Change in Focus                :       0.000000                            0.000000 _H+|Ic  
    Irregularity of surface 1 in fringes -1 Ok_h"  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 9OnH3  
    Change in Focus                :       0.000000                            0.000000 ;>d uY\$<  
    Irregularity of surface 2 in fringes Rg!Fu  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 O8drR4 Pt  
    Change in Focus                :       0.000000                            0.000000 xF4>G0  
    Irregularity of surface 3 in fringes vS{zLXg  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 DZI:zsf;5Q  
    Change in Focus                :       0.000000                            0.000000 toCxY+"nbU  
    Index tolerance on surface 1 =6sL}$  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 tgPx!5U  
    Change in Focus                :       0.000000                            0.000000 "A6T'nOP  
    Index tolerance on surface 2 Mr3;B+S  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 =E?!!EIq.  
    Change in Focus                :       0.000000                           -0.000000 ;/Z9M"!u[  
    L-T3{I,3  
    Worst offenders: (79y!&9p  
    Type                      Value      Criterion        Change 1k *gbXb  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 1dy>a=W  
    TSTY   2             0.20000000     0.35349910    -0.19053324 V{j>09u  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 cJnAwIs_e`  
    TSTX   2             0.20000000     0.35349910    -0.19053324 jeM/8~^4-  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 o`8dqP  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ?{OB+f}Mo  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 &Q85Bq  
    TSTX   1             0.20000000     0.42678383    -0.11724851 +v`?j+6z  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 QKAo}1Pq  
    TSTY   3             0.20000000     0.42861670    -0.11541563 K38A;=t9  
    2$MIA?A"Y  
    Estimated Performance Changes based upon Root-Sum-Square method: !e}LB%zf  
    Nominal MTF                 :     0.54403234 v;q<h  
    Estimated change            :    -0.36299231 I-QaR  
    Estimated MTF               :     0.18104003  .UUY9@  
    o6PDCaT7  
    Compensator Statistics: cnUYhxE+s  
    Change in back focus: '<A:`V9M}v  
    Minimum            :        -0.000000 fgmIx  
    Maximum            :         0.000000 gdu8O!9)  
    Mean               :        -0.000000 19u'{/Y"  
    Standard Deviation :         0.000000 rl0sN5n  
    <9]9;   
    Monte Carlo Analysis: e*7nq ~ B5  
    Number of trials: 20 y3]7^+k  
    vT#$`M<  
    Initial Statistics: Normal Distribution kXmnLxhS/  
    |,&5.|E 7  
      Trial       Criterion        Change $R'  
          1     0.42804416    -0.11598818 F3aOKV^  
    Change in Focus                :      -0.400171 _\9|acFT2O  
          2     0.54384387    -0.00018847 uz(3ml^S  
    Change in Focus                :       1.018470 -gWqq7O  
          3     0.44510003    -0.09893230 -\b$5oa(  
    Change in Focus                :      -0.601922 XF`,mV4  
          4     0.18154684    -0.36248550 \M H\!  
    Change in Focus                :       0.920681 S+mZ.aFS0z  
          5     0.28665820    -0.25737414 jb!R  
    Change in Focus                :       1.253875 FZW)C'j  
          6     0.21263372    -0.33139862 F ;o ^.  
    Change in Focus                :      -0.903878 h@5mVTb}i  
          7     0.40051424    -0.14351809 = h _>OA  
    Change in Focus                :      -1.354815 j{i3lGaN  
          8     0.48754161    -0.05649072 8| 6:  
    Change in Focus                :       0.215922 +izB(E8&{J  
          9     0.40357468    -0.14045766 _Ra$"j  
    Change in Focus                :       0.281783 BM(8+Wj  
         10     0.26315315    -0.28087919 ;\F3~rl  
    Change in Focus                :      -1.048393 7fVlA"x  
         11     0.26120585    -0.28282649 9 a ED6  
    Change in Focus                :       1.017611 E|(T(4;  
         12     0.24033815    -0.30369419 >IL[eiiPG  
    Change in Focus                :      -0.109292 9t.u9C=!F  
         13     0.37164046    -0.17239188 QBg~b{h  
    Change in Focus                :      -0.692430 /kl41gx  
         14     0.48597489    -0.05805744 /AJ#ngXz  
    Change in Focus                :      -0.662040 ewNzRH,b  
         15     0.21462327    -0.32940907 'l%b5:  
    Change in Focus                :       1.611296 7X h'VOljB  
         16     0.43378226    -0.11025008 x<m{B@3T  
    Change in Focus                :      -0.640081 xQ[~ c1  
         17     0.39321881    -0.15081353 kEH(\3,l  
    Change in Focus                :       0.914906 .Ulrv5wJ  
         18     0.20692530    -0.33710703 i`]-rM%J#  
    Change in Focus                :       0.801607 GOT@  
         19     0.51374068    -0.03029165 [jPUAr}  
    Change in Focus                :       0.947293 0Q81$% @<  
         20     0.38013374    -0.16389860 u!=9.3  
    Change in Focus                :       0.667010 7oPLO(0L  
     q q%\  
    Number of traceable Monte Carlo files generated: 20 wABaNB=9;  
    BT|5"b}  
    Nominal     0.54403234 9] i$`y  
    Best        0.54384387    Trial     2 y4%u< /  
    Worst       0.18154684    Trial     4 3{gD'y4j  
    Mean        0.35770970 :ET05MFs\#  
    Std Dev     0.11156454 pzX684  
     V Ae@P  
    1o&] =(  
    Compensator Statistics: RTPxAp+\5  
    Change in back focus: -dCM eC  
    Minimum            :        -1.354815 MIblx  
    Maximum            :         1.611296 ~]}V"O%,  
    Mean               :         0.161872 Mw=sW5Z  
    Standard Deviation :         0.869664 [I4:R_\  
    _|VWf8?\  
    90% >       0.20977951               ~FnB!Mh}?  
    80% >       0.22748071               'hTA O1n8  
    50% >       0.38667627               ,QDS_u$xi&  
    20% >       0.46553746               E5-f{Qc  
    10% >       0.50064115                {`2R<O  
    G+k[.  
    End of Run. tY?_#rc  
    (8M^|z}q  
    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 7+I%0U}m  
    XS$5TNI  
    qTbY'V5A  
    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 wzLR]<6G  
    >C6wm^bl  
    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                 yY,O=yOjq  
    80% >       0.22748071                 ]Y#$!fIx  
    50% >       0.38667627                 "][MCVYP  
    20% >       0.46553746                 B{fPj9Y0  
    10% >       0.50064115 ]+1?T)<!  
    @"BvyS,p  
    最后这个数值是MTF值呢，还是MTF的公差？ owClnp9K  
    n@pm5f  
    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@]&[ ~  
    DNsDEU  
    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  : O@U[S.IK  
    90% >       0.20977951                 J-g#zs  
    80% >       0.22748071                 c1j)  
    50% >       0.38667627                 A(y^1Nm  
    20% >       0.46553746                 y}jX/Ln  
    10% >       0.50064115 t0Q/vp*/  
    ....... XZhX%OT!  
    KK-9[S-  
    )i&9)_ro  
    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   ADRjCk}I  
    Mode                : Sensitivities Oqzz9+  
    Sampling            : 2 ShanwaCDqv  
    Nominal Criterion   : 0.54403234 \RZFq<6>  
    Test Wavelength     : 0.6328 P[PBoRd2  
    k))*Sg  
    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？ Iw~3y{\  
    W5*%n]s~  
    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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