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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 9Gfm?.O5  
    qEX2K^y'4"  
    @4^5C-  
    ePa:_?(  
    然后添加了默认公差分析，基本没变 cEnkt=  
    YN_#x  
    p<Wb^BE  
    L7_(KCh  
    然后运行分析的结果如下： q<o*rcwf ^  
    Z^`&Z3s  
    Analysis of Tolerances H"WkZX  
    H[@uE*W  
    File : E:\光学设计资料\zemax练习\f500.ZMX F8Z<JcOI  
    Title: ~mOGNf?f  
    Date : TUE JUN 21 2011 6%H8Q v  
    4*&x% ~*  
    Units are Millimeters. Z2)f$ c  
    All changes are computed using linear differences. i:Pg&474f  
    D-9zg\\'`  
    Paraxial Focus compensation only. U8]L3&~  
    %eGxQDIXg  
    WARNING: Solves should be removed prior to tolerancing. F7^8Ej9*a  
    GRCc<TM, U  
    Mnemonics: 5#g<L ~  
    TFRN: Tolerance on curvature in fringes. it=L_zu}  
    TTHI: Tolerance on thickness. #x1AZwC  
    TSDX: Tolerance on surface decentering in x. g9}u6q  
    TSDY: Tolerance on surface decentering in y. Vo+d3  
    TSTX: Tolerance on surface tilt in x (degrees). !CtY.Lp  
    TSTY: Tolerance on surface tilt in y (degrees). {R `IA|T#k  
    TIRR: Tolerance on irregularity (fringes). Wy@Z)z?  
    TIND: Tolerance on Nd index of refraction. /D`M?nD7  
    TEDX: Tolerance on element decentering in x. E:V&:9aQ@  
    TEDY: Tolerance on element decentering in y. @g9j+DcU  
    TETX: Tolerance on element tilt in x (degrees). D;Fvd:  
    TETY: Tolerance on element tilt in y (degrees). ;_amgRP7$  
    y$r^UjJEO  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. )&1yt4 x6%  
    nT` NfN  
    WARNING: Boundary constraints on compensators will be ignored. ;!, ]}2w*X  
    6?Q&>V26Y  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm N?Mmv|  
    Mode                : Sensitivities <89@k(\ /  
    Sampling            : 2 1)/B V{n  
    Nominal Criterion   : 0.54403234 F+*>q  
    Test Wavelength     : 0.6328 %56pP"w  
    ^%~ztn 51  
    H1| -f]!  
    Fields: XY Symmetric Angle in degrees ->n<9  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY  twz  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 cCFSPT2fq[  
    r=n|MT^O  
    Sensitivity Analysis: %2^C  
    K_{x y#H  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Fly@"W4a  
    Type                      Value      Criterion        Change          Value      Criterion        Change 0(Y$xg  
    Fringe tolerance on surface 1 &YO5N4X~o  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 -?e~dLu  
    Change in Focus                :      -0.000000                            0.000000 tirw{[X0n  
    Fringe tolerance on surface 2 2]eh[fRQ  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Bh:AY@k  
    Change in Focus                :       0.000000                            0.000000 F) {f{-@)  
    Fringe tolerance on surface 3 ^c< <I-o|  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 \-GV8A2:k  
    Change in Focus                :      -0.000000                            0.000000 .2Q`. o)  
    Thickness tolerance on surface 1 ,Ot3N\%yn  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 |4-c/@D.~  
    Change in Focus                :       0.000000                            0.000000 eG|e1tK+  
    Thickness tolerance on surface 2 LoOyqJ,  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 6Kh: m-E9  
    Change in Focus                :       0.000000                           -0.000000 C+P}R]cT"  
    Decenter X tolerance on surfaces 1 through 3 m{mK;D  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 0vS%m/Zi-  
    Change in Focus                :       0.000000                            0.000000 2c5>0f  
    Decenter Y tolerance on surfaces 1 through 3 4I"QT(;  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 cy)L%`(7  
    Change in Focus                :       0.000000                            0.000000 & ?/h5<  
    Tilt X tolerance on surfaces 1 through 3 (degrees) gwThhwR  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 V?Lf& X?  
    Change in Focus                :       0.000000                            0.000000 BS*cG>T  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) eWqJ2Tt  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 a&#Z=WK4  
    Change in Focus                :       0.000000                            0.000000 20^F -,z  
    Decenter X tolerance on surface 1 BRQ9kK20  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 o4Fh`?d}  
    Change in Focus                :       0.000000                            0.000000 lADi  
    Decenter Y tolerance on surface 1 rMe` HM@  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 `!qWHm6I*  
    Change in Focus                :       0.000000                            0.000000 uz>s2I}B  
    Tilt X tolerance on surface (degrees) 1 |1g2\5Re  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ~S|Vd  
    Change in Focus                :       0.000000                            0.000000 G8QJM0VpS  
    Tilt Y tolerance on surface (degrees) 1 L$ ]D&f8:  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 /Ia=/Jj7N  
    Change in Focus                :       0.000000                            0.000000 @ )<uQ S  
    Decenter X tolerance on surface 2 D: JGd$`  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 =!U{vT  
    Change in Focus                :       0.000000                            0.000000 5y=X?hF~)  
    Decenter Y tolerance on surface 2 TUy*wp9  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 +;Cq>1x,  
    Change in Focus                :       0.000000                            0.000000 6 Y&OG>_\  
    Tilt X tolerance on surface (degrees) 2 <FS/'[P  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 >P\T nb"Q\  
    Change in Focus                :       0.000000                            0.000000 :U ?P~HI  
    Tilt Y tolerance on surface (degrees) 2 wH|\;M{0V1  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 "^_p>C)T  
    Change in Focus                :       0.000000                            0.000000 K W04  
    Decenter X tolerance on surface 3 xd(AUl4qY  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 v bb mmv  
    Change in Focus                :       0.000000                            0.000000 !!2~lG<]  
    Decenter Y tolerance on surface 3 bn<&Xe  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 CFul_qZ/e  
    Change in Focus                :       0.000000                            0.000000 !G\1$"T$  
    Tilt X tolerance on surface (degrees) 3 a2dF(H  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 g'pE z  
    Change in Focus                :       0.000000                            0.000000 He#+zE ;  
    Tilt Y tolerance on surface (degrees) 3 zXcSE"   
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 V_+3@C  
    Change in Focus                :       0.000000                            0.000000 @D0Ut9)  
    Irregularity of surface 1 in fringes ~JC``&6E=}  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 gP/]05$e  
    Change in Focus                :       0.000000                            0.000000 (5km]`7z  
    Irregularity of surface 2 in fringes {y<_S]0  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Qx.E+n\  
    Change in Focus                :       0.000000                            0.000000 lJ7k4ua\  
    Irregularity of surface 3 in fringes OE4 2{?)  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 +"' h?7'C  
    Change in Focus                :       0.000000                            0.000000 <LBMth  
    Index tolerance on surface 1 v]VIUVd  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 2jx""{  
    Change in Focus                :       0.000000                            0.000000 BAm{Gb  
    Index tolerance on surface 2 {\]SvoJnJ  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ~0/=5 dC  
    Change in Focus                :       0.000000                           -0.000000 %#7M~RB[  
     .':SD{  
    Worst offenders: rzqCQZHL5  
    Type                      Value      Criterion        Change -MB ,]m  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 v+Mt/8  
    TSTY   2             0.20000000     0.35349910    -0.19053324 +pf 7  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 {tWfLfzU  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ?\c*DNM'  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 $#KSvo{otI  
    TSTY   1             0.20000000     0.42678383    -0.11724851 h!d#=.R  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 <~:  g  
    TSTX   1             0.20000000     0.42678383    -0.11724851 uX.Aq@j  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 VaX>tUW  
    TSTY   3             0.20000000     0.42861670    -0.11541563 NiWooFPKJ  
    _ZR2?y-M  
    Estimated Performance Changes based upon Root-Sum-Square method: [f O]oTh  
    Nominal MTF                 :     0.54403234 o^7NZ]m  
    Estimated change            :    -0.36299231 H2k>E}`  
    Estimated MTF               :     0.18104003 Bb-x1{t  
    P6IhpB59  
    Compensator Statistics: v[Ar{t&  
    Change in back focus: N4HnW0  
    Minimum            :        -0.000000 yP-.8[;  
    Maximum            :         0.000000 &<!I]:Y  
    Mean               :        -0.000000 ia?8 Z"&lK  
    Standard Deviation :         0.000000 >aa-ix &  
    Q^mJ_~  
    Monte Carlo Analysis: r-'j#|^tz  
    Number of trials: 20 ~hM4({/QN  
    VK$+Nm)  
    Initial Statistics: Normal Distribution [=LQ,e$r7  
    A1YIPrav(  
      Trial       Criterion        Change Dj<Vn%d*  
          1     0.42804416    -0.11598818 t3bN P K^  
    Change in Focus                :      -0.400171 NINyg"g<  
          2     0.54384387    -0.00018847 6'qs=Ql  
    Change in Focus                :       1.018470  wl9E  
          3     0.44510003    -0.09893230 a<vCAFQ  
    Change in Focus                :      -0.601922 3!*J;Y  
          4     0.18154684    -0.36248550 oq0G@  
    Change in Focus                :       0.920681 kyY tL_SD  
          5     0.28665820    -0.25737414 uV%7|/fD  
    Change in Focus                :       1.253875 $e<3z6  
          6     0.21263372    -0.33139862 r--"JO%2  
    Change in Focus                :      -0.903878 U)c,ZxE  
          7     0.40051424    -0.14351809 #]:nQ (  
    Change in Focus                :      -1.354815 g{a_{P  
          8     0.48754161    -0.05649072 eb:uh!  
    Change in Focus                :       0.215922 _jnH!Mw  
          9     0.40357468    -0.14045766 \W*ouH  
    Change in Focus                :       0.281783 Jh }3AoD  
         10     0.26315315    -0.28087919 $=H\#e)]Ug  
    Change in Focus                :      -1.048393 BQw#PXp3  
         11     0.26120585    -0.28282649 V1"+4&R^T_  
    Change in Focus                :       1.017611 Ng;E]2"  
         12     0.24033815    -0.30369419 v)X1R/z5xw  
    Change in Focus                :      -0.109292 vT[%*)`  
         13     0.37164046    -0.17239188 %2qvK}  
    Change in Focus                :      -0.692430 v}[7)oj|  
         14     0.48597489    -0.05805744 f+gyJ#R`  
    Change in Focus                :      -0.662040 )8e_<^M  
         15     0.21462327    -0.32940907 "CLd_H*)c  
    Change in Focus                :       1.611296 +gT?{;3[i  
         16     0.43378226    -0.11025008 9Y-s],2V  
    Change in Focus                :      -0.640081 5GpR N  
         17     0.39321881    -0.15081353 ^#"!uCq]gM  
    Change in Focus                :       0.914906 T_I"Tsv  
         18     0.20692530    -0.33710703 *4+;E y  
    Change in Focus                :       0.801607 %iF< px?Vc  
         19     0.51374068    -0.03029165 K4l,YR;r  
    Change in Focus                :       0.947293 :Fm+X[n  
         20     0.38013374    -0.16389860 Q=w\)qJ  
    Change in Focus                :       0.667010 qW7S<ouh  
    J6::(0HM  
    Number of traceable Monte Carlo files generated: 20 wRUpQ~=B2  
    M[Ls:\1a  
    Nominal     0.54403234 9Y*6AaKE6  
    Best        0.54384387    Trial     2 tQUp1i{j\  
    Worst       0.18154684    Trial     4 w{Dk,9>w)  
    Mean        0.35770970 Z mYp!B_~  
    Std Dev     0.11156454 [l'~>  
    cV)C:!W2  
    XlB`Z81j  
    Compensator Statistics: .cle^P  
    Change in back focus: #9p{Y}2#  
    Minimum            :        -1.354815 xB 4A"|  
    Maximum            :         1.611296 HiVF<tN  
    Mean               :         0.161872 Ks!.$y:x  
    Standard Deviation :         0.869664 qb "H&)aHw  
    0y|}}92:  
    90% >       0.20977951               *gZ4Ub|O  
    80% >       0.22748071               f'R^MX2  
    50% >       0.38667627               }U+gJkY2  
    20% >       0.46553746               QJ pUk%Wj  
    10% >       0.50064115                1kTJMtZG~  
    5/Swn9vwl  
    End of Run. v,1.n{!;  
    (~/D*<A  
    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 8M:;9a8fh  
    -Z]?v3 9  
    O/l|\n  
    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 js7J#b7  
    lty`7(\  
    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                 rWi9'6  
    80% >       0.22748071                 Og"50-  
    50% >       0.38667627                 |5$9l#e  
    20% >       0.46553746                 `Z]a6@w~  
    10% >       0.50064115 K'N\"Y?>  
    9= \bS6w*  
    最后这个数值是MTF值呢，还是MTF的公差？ D@5&xd_@4  
    0xIr:aFF  
    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？？？   W"VN2  
    ks sXi6^  
    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  : 2"yzrwZ:  
    90% >       0.20977951                 D:8-f3  
    80% >       0.22748071                 p^5B_r:  
    50% >       0.38667627                 7{8!IcR #  
    20% >       0.46553746                 H6bomp"  
    10% >       0.50064115 <u u1e@P  
    ....... "&Q-'L!M'/  
    K)l{3\9l|  
    hY-;Wfg  
    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   AG/nX?u7)t  
    Mode                : Sensitivities uhQ3  
    Sampling            : 2 &tLg}7?iB  
    Nominal Criterion   : 0.54403234 kxTh tjgv  
    Test Wavelength     : 0.6328 Itj|0PGd  
    V6BCW;   
    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？ ~Jp\'P7*  
    9i,QCA  
    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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