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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 7.!`c-8 u  
    9`| ^cL*6  
    wQR0R~|M  
    %AV[vr,  
    然后添加了默认公差分析，基本没变 _c@k>"_{S  
    \1H~u,a  
    AZ'"Ua  
    .8~zgpK  
    然后运行分析的结果如下： dp=#|!jc  
    qCUn. mI  
    Analysis of Tolerances vq_v;$9}  
    O @)D%*;v  
    File : E:\光学设计资料\zemax练习\f500.ZMX cpJ(77e  
    Title:  #-^y9B  
    Date : TUE JUN 21 2011 .G/2CVMj  
    /)LI1\ o  
    Units are Millimeters. x4e8;A(y  
    All changes are computed using linear differences. tEC`-> |  
    %7n(>em  
    Paraxial Focus compensation only. {T(z@0Xu  
    BSc5@;  
    WARNING: Solves should be removed prior to tolerancing. t9Y?0O}/  
    jv5Os-  
    Mnemonics: F =Zc_  
    TFRN: Tolerance on curvature in fringes. ]fb3>HOTJ  
    TTHI: Tolerance on thickness. @`S8d%6P  
    TSDX: Tolerance on surface decentering in x. SBog7An9SI  
    TSDY: Tolerance on surface decentering in y. |.;LI= CT  
    TSTX: Tolerance on surface tilt in x (degrees). 2[e^mm&.   
    TSTY: Tolerance on surface tilt in y (degrees). k,M %"FLQ  
    TIRR: Tolerance on irregularity (fringes). lRr={ >s  
    TIND: Tolerance on Nd index of refraction. G&f~A;'7k  
    TEDX: Tolerance on element decentering in x. |`c=`xK7'  
    TEDY: Tolerance on element decentering in y. c_+y~X)i  
    TETX: Tolerance on element tilt in x (degrees). E2xcd#ZD  
    TETY: Tolerance on element tilt in y (degrees). =0gfGwD{  
     `GQ'yv  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. k2t#O%_f  
    Kulh:d:w  
    WARNING: Boundary constraints on compensators will be ignored. =j$!N# L  
    DAHQ7#qfQC  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm lWe1Q#  
    Mode                : Sensitivities +~]:oj  
    Sampling            : 2 ~V?3A/]  
    Nominal Criterion   : 0.54403234 <&Q(I+^  
    Test Wavelength     : 0.6328 qTd6UKg  
    0s+pcqOd^  
    qt&zo5  
    Fields: XY Symmetric Angle in degrees 9p '#a:  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ;~ , <8  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Ad'b{C%  
     d(>  
    Sensitivity Analysis: 'D1Sm&M2%e  
    @w]z"UCwV@  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Dw-i!dq  
    Type                      Value      Criterion        Change          Value      Criterion        Change #Emz9qTsce  
    Fringe tolerance on surface 1 RLtIn!2OU  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 rh%-va9  
    Change in Focus                :      -0.000000                            0.000000 b( qO fek  
    Fringe tolerance on surface 2 X&+*?Q^  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ' +*,|;?  
    Change in Focus                :       0.000000                            0.000000 7x ?2((   
    Fringe tolerance on surface 3 ulzQ[?OMl  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 sKU?"|G81G  
    Change in Focus                :      -0.000000                            0.000000 LsGu-Y 5^  
    Thickness tolerance on surface 1 erQ0fW  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ( 8}'JvSu  
    Change in Focus                :       0.000000                            0.000000 y7x[noGtR  
    Thickness tolerance on surface 2 &GetRDr  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 057$b!A-a  
    Change in Focus                :       0.000000                           -0.000000 cHO8%xu`  
    Decenter X tolerance on surfaces 1 through 3 R:}u(N  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 rDvz2p"R  
    Change in Focus                :       0.000000                            0.000000 7=gv4arRwt  
    Decenter Y tolerance on surfaces 1 through 3 K0bh;I  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 7vf?#^ RlV  
    Change in Focus                :       0.000000                            0.000000 5f'<0D;K  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ./ !6M  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 mhXSbo9w-  
    Change in Focus                :       0.000000                            0.000000 }[%d=NY  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) tEE1`10Mt  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314  :Ky *AI  
    Change in Focus                :       0.000000                            0.000000 QoVRZ$!p  
    Decenter X tolerance on surface 1 Zagj1 OV|  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Q'mLwD3>  
    Change in Focus                :       0.000000                            0.000000 6QC=:_M;  
    Decenter Y tolerance on surface 1 }CyS_Tc  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 on=I*?+R  
    Change in Focus                :       0.000000                            0.000000 >.]' N:5  
    Tilt X tolerance on surface (degrees) 1 w`?Rd  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 D]UqM<0Rz  
    Change in Focus                :       0.000000                            0.000000 !^ /Mn  
    Tilt Y tolerance on surface (degrees) 1 ,@b7N[h  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 V;V,G+0Re  
    Change in Focus                :       0.000000                            0.000000 cx(W{O"Jb  
    Decenter X tolerance on surface 2 Q4&|^RLLG  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7?O~3  
    Change in Focus                :       0.000000                            0.000000 m<cvx3e  
    Decenter Y tolerance on surface 2 ~^GY(J'  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 't5 I%F  
    Change in Focus                :       0.000000                            0.000000 k'd(H5A   
    Tilt X tolerance on surface (degrees) 2 }}VB#   
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 1`X- O>  
    Change in Focus                :       0.000000                            0.000000 SB3= 5"q  
    Tilt Y tolerance on surface (degrees) 2 {#c* *' 4  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Rt{`v<  
    Change in Focus                :       0.000000                            0.000000 MGmUgc  
    Decenter X tolerance on surface 3 ca!=D $  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 =`l).GnN2`  
    Change in Focus                :       0.000000                            0.000000 27NhYDo  
    Decenter Y tolerance on surface 3 $YM6}D@  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 EpO5 _T_  
    Change in Focus                :       0.000000                            0.000000 Jrkj foN  
    Tilt X tolerance on surface (degrees) 3 !w[io;  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Ve1O<i  
    Change in Focus                :       0.000000                            0.000000 VTQxg5P c  
    Tilt Y tolerance on surface (degrees) 3 ]757oAXl  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 NNt,J;  
    Change in Focus                :       0.000000                            0.000000 =eXJZPR  
    Irregularity of surface 1 in fringes }5)sS}C  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 gD\  =  
    Change in Focus                :       0.000000                            0.000000 zgdOugmmt_  
    Irregularity of surface 2 in fringes :.+?v*%;n  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 &$vW  
    Change in Focus                :       0.000000                            0.000000 <u"h'e/oW_  
    Irregularity of surface 3 in fringes  pzMli ^  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 B`/c Kfg  
    Change in Focus                :       0.000000                            0.000000 +P&;cCV`S3  
    Index tolerance on surface 1 3xJ_%AD\'  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 j|u6TG  
    Change in Focus                :       0.000000                            0.000000 =DhzV D  
    Index tolerance on surface 2 gGiLw5o,  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 5 E%dF9q  
    Change in Focus                :       0.000000                           -0.000000 3KF[ v{  
    f&\v+'[p  
    Worst offenders: -n-rKN.T  
    Type                      Value      Criterion        Change m,~ @1  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 -'tgr6=|w"  
    TSTY   2             0.20000000     0.35349910    -0.19053324 QDRgVP  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 (]Z$mv!  
    TSTX   2             0.20000000     0.35349910    -0.19053324 0$n0f u  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 (L)tC*Qjc  
    TSTY   1             0.20000000     0.42678383    -0.11724851 @+v;B:  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 P| [i{h  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ]Y3|*t(\  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 rsp?N{e  
    TSTY   3             0.20000000     0.42861670    -0.11541563 b ;Vy=f  
    4No!`O-!&  
    Estimated Performance Changes based upon Root-Sum-Square method: '~^3 =[Z  
    Nominal MTF                 :     0.54403234 w/KCu W<  
    Estimated change            :    -0.36299231 v@43 %`"Gj  
    Estimated MTF               :     0.18104003 bBQ1 ~ R  
    |/?)u$U<  
    Compensator Statistics: TB]B l.  
    Change in back focus: kpM5/=f/@  
    Minimum            :        -0.000000 m,e @bJ-  
    Maximum            :         0.000000 MSm vQ  
    Mean               :        -0.000000 %5=XszS  
    Standard Deviation :         0.000000 \(lt [=  
    $lj1924?^  
    Monte Carlo Analysis: 2EubMG  
    Number of trials: 20 4s<*rKm~  
    glk_ *x  
    Initial Statistics: Normal Distribution <}c`jN!z.  
    )+[{MR '  
      Trial       Criterion        Change Y 9eGDpW  
          1     0.42804416    -0.11598818 5Pis0fa  
    Change in Focus                :      -0.400171 MorR&K  
          2     0.54384387    -0.00018847 5@$b@jTd  
    Change in Focus                :       1.018470 ~;Ga65_6_  
          3     0.44510003    -0.09893230 SC~cryb  
    Change in Focus                :      -0.601922 (;o,t?:d  
          4     0.18154684    -0.36248550 7XE/bhe%S  
    Change in Focus                :       0.920681 Z2Bl$ \  
          5     0.28665820    -0.25737414 z G {1;  
    Change in Focus                :       1.253875 JLsy|}>  
          6     0.21263372    -0.33139862 =Tf uwhV  
    Change in Focus                :      -0.903878 a*d>WN.;U  
          7     0.40051424    -0.14351809 $/%|0tQ  
    Change in Focus                :      -1.354815 R qS2Qo]  
          8     0.48754161    -0.05649072 )#9R()n!  
    Change in Focus                :       0.215922 E3#}:6m  
          9     0.40357468    -0.14045766 (m[]A&u  
    Change in Focus                :       0.281783 `z$<1Q T  
         10     0.26315315    -0.28087919 7E$ e1=  
    Change in Focus                :      -1.048393 ,z1X{  
         11     0.26120585    -0.28282649 r"OVu~ND  
    Change in Focus                :       1.017611 (( 0%>HJ{~  
         12     0.24033815    -0.30369419 C7`FM@z  
    Change in Focus                :      -0.109292 3&!X8Lhv  
         13     0.37164046    -0.17239188 7d?'~}j  
    Change in Focus                :      -0.692430 !GcH )  
         14     0.48597489    -0.05805744 T<\Q4Coth  
    Change in Focus                :      -0.662040 k,S'i#4q4  
         15     0.21462327    -0.32940907 zE +)oQ,  
    Change in Focus                :       1.611296 tL1"Dt>  
         16     0.43378226    -0.11025008 :qi"I;=6  
    Change in Focus                :      -0.640081 i,BE]w  
         17     0.39321881    -0.15081353 QDS=M]  
    Change in Focus                :       0.914906 NAjK0]SRY  
         18     0.20692530    -0.33710703 zq g4@" p  
    Change in Focus                :       0.801607 d#.9!m~.  
         19     0.51374068    -0.03029165 |q5R5 mQ  
    Change in Focus                :       0.947293 Kw}-<y  
         20     0.38013374    -0.16389860 xI}h{AF7  
    Change in Focus                :       0.667010 UBp0;)-  
    )/h~csy:~  
    Number of traceable Monte Carlo files generated: 20 xtyzy@)QL  
    c *(]pM  
    Nominal     0.54403234 F{\MIuoy  
    Best        0.54384387    Trial     2 WRQJ6B  
    Worst       0.18154684    Trial     4 }tT"vCu  
    Mean        0.35770970 +1Oi-$ 2-  
    Std Dev     0.11156454 U]lXw+&  
    /i|T\  
    NrVrR80Y  
    Compensator Statistics: lL~T@+J~  
    Change in back focus: w? A&XB+  
    Minimum            :        -1.354815 !L"3Otd  
    Maximum            :         1.611296 c6 cGl]FL  
    Mean               :         0.161872 !']=7It{  
    Standard Deviation :         0.869664 +Gi~VW.  
    ygr[5Tl  
    90% >       0.20977951               Q*mzfsgr  
    80% >       0.22748071               OwrzD~  
    50% >       0.38667627               QD%~ A0  
    20% >       0.46553746               QIVpO /@  
    10% >       0.50064115                Esw#D90q  
    #r; ' AG  
    End of Run. {~ ZSqd  
    ce&)djC7U  
    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 Q@hx +aM  
    C)/uX5  
    WK]SHiHD  
    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 x]lv:m\)jT  
    Q4r)TR,  
    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                 n}PK0  
    80% >       0.22748071                 +ia  F$  
    50% >       0.38667627                 1ux~dP  
    20% >       0.46553746                 >K**SjVG  
    10% >       0.50064115 [4sI<aH  
    |BhfW O8p  
    最后这个数值是MTF值呢，还是MTF的公差？ ja*k\w{U'  
    3Vjuk7  
    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？？？   $8h^R#  
    2f ]CnD0$  
    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  : bf2R15|t5`  
    90% >       0.20977951                 Q# xeu  
    80% >       0.22748071                 `C"Slz::  
    50% >       0.38667627                 Cd)e_&  
    20% >       0.46553746                 JPL8fX-w  
    10% >       0.50064115 @>f]0,"(  
    ....... ']^e,9=Q  
    Ry*NRP;  
    x][vd^iW  
    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   *>%34m93  
    Mode                : Sensitivities VaZ+TE  
    Sampling            : 2 K0 .f4 o  
    Nominal Criterion   : 0.54403234 B' 6^E#9  
    Test Wavelength     : 0.6328 awuUaE  
    NWPL18*C  
    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？ f|Kd{ $VO  
    f]"][!e!,  
    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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