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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 F9ys.Bc  
    *oby(D"p  
    $?_/`S13  
    /|<Pn!}J  
    然后添加了默认公差分析，基本没变 k? <.yr1  
    yQT cO^E  
    ^(j}'p,  
    Xkqq$A4  
    然后运行分析的结果如下： &kR*J<)V  
    l}bAwJ?  
    Analysis of Tolerances sf([8YUd  
    )j/2Z-Ev:W  
    File : E:\光学设计资料\zemax练习\f500.ZMX 3WVH8Sb  
    Title: Bi.,@7|>  
    Date : TUE JUN 21 2011 IP LKOT~  
    WE{fu{x  
    Units are Millimeters. - w{`/  
    All changes are computed using linear differences. 0N|l1Sn  
    b<\2j5  
    Paraxial Focus compensation only. i/C`]1R/  
    Wbq0K6X  
    WARNING: Solves should be removed prior to tolerancing. z4qc)- {L  
    :17Pc\:DS  
    Mnemonics: _%@dlT?  
    TFRN: Tolerance on curvature in fringes. (-no`j  
    TTHI: Tolerance on thickness. NihUCj"  
    TSDX: Tolerance on surface decentering in x. kF;N}O2?{  
    TSDY: Tolerance on surface decentering in y. ]c9\[Kdq}H  
    TSTX: Tolerance on surface tilt in x (degrees). yTxrbE  
    TSTY: Tolerance on surface tilt in y (degrees). _xefFy  
    TIRR: Tolerance on irregularity (fringes). CN{xh=2qY[  
    TIND: Tolerance on Nd index of refraction. (# c|San  
    TEDX: Tolerance on element decentering in x. tD~ n PbbB  
    TEDY: Tolerance on element decentering in y. P=[_W;->}  
    TETX: Tolerance on element tilt in x (degrees). #n7F7X  
    TETY: Tolerance on element tilt in y (degrees). tEN8S]X  
    [.(,v n?6  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. `j1b5&N;7  
    y}F;~H~P  
    WARNING: Boundary constraints on compensators will be ignored. k-Z :z?M  
    4St-Q]Y _  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Ki\\yK  
    Mode                : Sensitivities l(y,lK=YP1  
    Sampling            : 2 68?> #o865  
    Nominal Criterion   : 0.54403234 I}jem  
    Test Wavelength     : 0.6328 ;*G';VuT  
    sTxgU !_  
    g8SVuG<DI\  
    Fields: XY Symmetric Angle in degrees -U{CWn3G  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY .6=;{h4cpB  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 J2Mq1*Vpq  
    T,oZaJ<  
    Sensitivity Analysis: dC<2%y  
    oj(st{,  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| GGs7]mhA  
    Type                      Value      Criterion        Change          Value      Criterion        Change Ygbyia|  
    Fringe tolerance on surface 1 S\SYFXUl  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 l;SXR <EU  
    Change in Focus                :      -0.000000                            0.000000 I/*^s  
    Fringe tolerance on surface 2 _P` ^B  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 b8 E{~z  
    Change in Focus                :       0.000000                            0.000000 x[y}{T  
    Fringe tolerance on surface 3 G=F_{z\}  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 <])]1r8  
    Change in Focus                :      -0.000000                            0.000000 {4$aA*  
    Thickness tolerance on surface 1 <N:)Xf9`  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 8wrO64_NO  
    Change in Focus                :       0.000000                            0.000000 I 6'!b/  
    Thickness tolerance on surface 2 D$AvD7_  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 }1DzWS-hh  
    Change in Focus                :       0.000000                           -0.000000 HUChg{[  
    Decenter X tolerance on surfaces 1 through 3 z1^3~U$}  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 o%,?v 9  
    Change in Focus                :       0.000000                            0.000000 wmA TV/  
    Decenter Y tolerance on surfaces 1 through 3 ' <?=!&\D  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9X&=?+f  
    Change in Focus                :       0.000000                            0.000000 gN2oUbf8  
    Tilt X tolerance on surfaces 1 through 3 (degrees) gZ| !'  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 r1Hh @sxn  
    Change in Focus                :       0.000000                            0.000000  )$GCur~  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) H _JE)a:+  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 XtQwLH+F  
    Change in Focus                :       0.000000                            0.000000 GkIhPn(d  
    Decenter X tolerance on surface 1 Lq62  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 NM9,AG  
    Change in Focus                :       0.000000                            0.000000 2q(gWhcj  
    Decenter Y tolerance on surface 1 }H<Z`3_U%  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 01&@8z'E  
    Change in Focus                :       0.000000                            0.000000 1G6 \}El95  
    Tilt X tolerance on surface (degrees) 1 VJP#  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 |2=@8_am  
    Change in Focus                :       0.000000                            0.000000 w59q* 2  
    Tilt Y tolerance on surface (degrees) 1 I4|"Ztw  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 @^<&LG5^  
    Change in Focus                :       0.000000                            0.000000 )4h|7^6ji  
    Decenter X tolerance on surface 2 !Eg2#a?  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 BNF*1JO  
    Change in Focus                :       0.000000                            0.000000 PJ4/E  
    Decenter Y tolerance on surface 2 PhPe7^  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 _^eiN'B  
    Change in Focus                :       0.000000                            0.000000 mK/E1a)AG3  
    Tilt X tolerance on surface (degrees) 2 d!46`b$rd  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Bd 0oA )i  
    Change in Focus                :       0.000000                            0.000000 xC9{hXg!  
    Tilt Y tolerance on surface (degrees) 2 spTz}p^\O  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 XdmpfUR,13  
    Change in Focus                :       0.000000                            0.000000 M7T*J>i  
    Decenter X tolerance on surface 3 aOw#]pB|  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 8#HnV%|N  
    Change in Focus                :       0.000000                            0.000000 6.a5%:  
    Decenter Y tolerance on surface 3 op/_ :#&'  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 MGq\\hLD\-  
    Change in Focus                :       0.000000                            0.000000 i=*H|)  
    Tilt X tolerance on surface (degrees) 3 m+(g.mvK>  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 XjCx`bX^<  
    Change in Focus                :       0.000000                            0.000000 'sXrtl7{^  
    Tilt Y tolerance on surface (degrees) 3 R?;mu^B  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 zy%0;%  
    Change in Focus                :       0.000000                            0.000000 ^pH8'^n  
    Irregularity of surface 1 in fringes J<0d"'  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Dkb`_HI  
    Change in Focus                :       0.000000                            0.000000 `d^Q!QxE  
    Irregularity of surface 2 in fringes \<(EV,m2  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 0e+#{k  
    Change in Focus                :       0.000000                            0.000000 9-V'U\}L  
    Irregularity of surface 3 in fringes M 87CP=yc  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 m?4hEwQxf  
    Change in Focus                :       0.000000                            0.000000 6Q\|8a  
    Index tolerance on surface 1 |O6/p7+.  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 S[2?,C<2=  
    Change in Focus                :       0.000000                            0.000000 qjhk#\y  
    Index tolerance on surface 2 FNuE-_  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ~;]kqYIJ  
    Change in Focus                :       0.000000                           -0.000000 : .-z!  
    ZgG~xl\My  
    Worst offenders: n?$c"}  
    Type                      Value      Criterion        Change W7'<Jom|?  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ?>U=bA  
    TSTY   2             0.20000000     0.35349910    -0.19053324 dt@c,McN|Q  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 T*SLM"x  
    TSTX   2             0.20000000     0.35349910    -0.19053324 W6}>iB  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 1<1+nGO  
    TSTY   1             0.20000000     0.42678383    -0.11724851 n42\ty9  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 3N-pND0>p  
    TSTX   1             0.20000000     0.42678383    -0.11724851 4ryG_p52l  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 I<CrEL<5}~  
    TSTY   3             0.20000000     0.42861670    -0.11541563 M_Ag *?2I  
    m7y[Y  
    Estimated Performance Changes based upon Root-Sum-Square method: =]-z?O6^`  
    Nominal MTF                 :     0.54403234 \eNB L[  
    Estimated change            :    -0.36299231 Q.$Rhjb  
    Estimated MTF               :     0.18104003 o+}k$i!6  
    UO&$1rV  
    Compensator Statistics: .4R.$`z4  
    Change in back focus: lH`TF_  
    Minimum            :        -0.000000 RqGX(Iuv  
    Maximum            :         0.000000 MTCfs~}m  
    Mean               :        -0.000000 !L9OJ1F  
    Standard Deviation :         0.000000 ^Z#G_%\Y:  
    >h\u[I$7  
    Monte Carlo Analysis: ~WTkX(\  
    Number of trials: 20 2/r8% Sq  
    ]"HaE-`%  
    Initial Statistics: Normal Distribution wpYk`L r  
    ,>rvl P  
      Trial       Criterion        Change ;veD?|  
          1     0.42804416    -0.11598818 5v)bs\x6  
    Change in Focus                :      -0.400171 m N}szW,  
          2     0.54384387    -0.00018847 j\IdB:}j  
    Change in Focus                :       1.018470 nOL.%  
          3     0.44510003    -0.09893230 5 | ,b  
    Change in Focus                :      -0.601922  {Ba&  
          4     0.18154684    -0.36248550 PIa!N Py  
    Change in Focus                :       0.920681 V=*^C+6s  
          5     0.28665820    -0.25737414 <^Vj1s  
    Change in Focus                :       1.253875 Znb7OF^#"  
          6     0.21263372    -0.33139862 |xcI~ X7Q  
    Change in Focus                :      -0.903878 GW;%~qH[,  
          7     0.40051424    -0.14351809 PjEJ C@n  
    Change in Focus                :      -1.354815 G2kU_  
          8     0.48754161    -0.05649072 [Cv./hEQi  
    Change in Focus                :       0.215922 rX?ZUw?u&  
          9     0.40357468    -0.14045766 g?v(>#i  
    Change in Focus                :       0.281783 ; $80}TY '  
         10     0.26315315    -0.28087919 $~.YB\3  
    Change in Focus                :      -1.048393 9D1WUUa  
         11     0.26120585    -0.28282649 |K Rt$t  
    Change in Focus                :       1.017611 C$6FI `J  
         12     0.24033815    -0.30369419 T9Q3I  
    Change in Focus                :      -0.109292 aqI"4v]~b  
         13     0.37164046    -0.17239188 T8z?_ *k  
    Change in Focus                :      -0.692430 !`I@Rk]`c  
         14     0.48597489    -0.05805744 Cn3 _D  
    Change in Focus                :      -0.662040 N7J?S~x  
         15     0.21462327    -0.32940907 i^%$ydg  
    Change in Focus                :       1.611296 r)'vn[A  
         16     0.43378226    -0.11025008 `T[@-   
    Change in Focus                :      -0.640081 u3+B/ 5x  
         17     0.39321881    -0.15081353 Pn">fWRCx  
    Change in Focus                :       0.914906 e9KD mX_  
         18     0.20692530    -0.33710703 rl%,9JD!  
    Change in Focus                :       0.801607 '1ySBl1>  
         19     0.51374068    -0.03029165 F =e9o*z  
    Change in Focus                :       0.947293 O[ird`/  
         20     0.38013374    -0.16389860 #mu L-V  
    Change in Focus                :       0.667010 :Fb>=e  
    @h{|tP%"  
    Number of traceable Monte Carlo files generated: 20 ( 4L/I  
    |cma7q}p  
    Nominal     0.54403234 zW%Em81Wd  
    Best        0.54384387    Trial     2 Yn }Gj'  
    Worst       0.18154684    Trial     4 m g'q-G`\<  
    Mean        0.35770970 1W{N6+u  
    Std Dev     0.11156454 *pJGp:{6V?  
    h.>SVQzU  
    !g]5y=  
    Compensator Statistics: dyWp'vCQs\  
    Change in back focus: c,2& -T}  
    Minimum            :        -1.354815 g;63$_<  
    Maximum            :         1.611296 @=VxW U  
    Mean               :         0.161872 Kk8} m;  
    Standard Deviation :         0.869664 BUBx}dbCM  
    b]4dmc*N+  
    90% >       0.20977951               !lgL=Ys(  
    80% >       0.22748071               JkAM:,^(  
    50% >       0.38667627               .Az36wD  
    20% >       0.46553746               ;9T}h2^`B  
    10% >       0.50064115                 lln"c  
    Sf,z  
    End of Run. &ry*~"xoh  
    Zok{ndO@|f  
    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 fkzSX8a9}  
    ^U_T<x8{  
    [b3!H{b#  
    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 Wm}c-GD  
    :DN!1~ZtW  
    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                 ^{+ry<rS>  
    80% >       0.22748071                 +K 4XMf  
    50% >       0.38667627                 DB'0  
    20% >       0.46553746                 8MJJ w;  
    10% >       0.50064115 Q]k< Y  
    N"S`9B1eD(  
    最后这个数值是MTF值呢，还是MTF的公差？ %~LY'cfPse  
    j_8 YFz5  
    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？？？   5PeS/%uT@  
    66v,/#K  
    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  : {v"f){   
    90% >       0.20977951                  5wK==hZ  
    80% >       0.22748071                 N_%@_$3G]  
    50% >       0.38667627                 4H8r[  
    20% >       0.46553746                 }&v}S6T  
    10% >       0.50064115 Qf:e;1F!  
    ....... 8eT#- 9q@  
    &9e  
    P]+B}))  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   <$A,|m  
    Mode                : Sensitivities :(q4y-o6  
    Sampling            : 2 w1< pQ[A  
    Nominal Criterion   : 0.54403234 rfDGS%!O%  
    Test Wavelength     : 0.6328 4~ x>]  
    eC/{c1C  
    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
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    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？ /l `zZ>  
    %)V=)l.j  
    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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