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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 H^1 a3L]  
    H;Qn?^  
    WHLKf  
    ~dr1Qi#j?  
    然后添加了默认公差分析，基本没变 -2ij;pkIW$  
    x,G6`|Hl  
    L[r0UXYLV  
    U7%pOpO!  
    然后运行分析的结果如下： LU7)F,ok  
    r<N*N,~  
    Analysis of Tolerances Zt0%E <C{  
    !;!~5"0~"  
    File : E:\光学设计资料\zemax练习\f500.ZMX Z3~*R7G8>  
    Title: v/+}FS=  
    Date : TUE JUN 21 2011 e+ w  
    5@A=, GPUn  
    Units are Millimeters. xt0j9{p  
    All changes are computed using linear differences. %FFm[[nxI  
    gH55c aF<  
    Paraxial Focus compensation only. Tv)y }  
     n(xlad  
    WARNING: Solves should be removed prior to tolerancing. =usDI<3r  
    -mw \?\2{  
    Mnemonics: 5T3>fw2G  
    TFRN: Tolerance on curvature in fringes. !Jn w_)  
    TTHI: Tolerance on thickness. OmbKx&>YGz  
    TSDX: Tolerance on surface decentering in x. J15T!_AW<  
    TSDY: Tolerance on surface decentering in y. ,[1`'nN@g  
    TSTX: Tolerance on surface tilt in x (degrees). !:[n3.vm   
    TSTY: Tolerance on surface tilt in y (degrees). Vy~$%H94  
    TIRR: Tolerance on irregularity (fringes). 5(`GF|  
    TIND: Tolerance on Nd index of refraction. +p6\R;_E  
    TEDX: Tolerance on element decentering in x. `0sk2fn  
    TEDY: Tolerance on element decentering in y. 7[0k5-  
    TETX: Tolerance on element tilt in x (degrees). 'c{]#E1}  
    TETY: Tolerance on element tilt in y (degrees). JP*mQzZL  
    BXw,Rz }  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. )K3 vzX  
    <qY>d,+E'  
    WARNING: Boundary constraints on compensators will be ignored. #%tL8/K*  
    [4rMUS7-m"  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm &'\+Z  
    Mode                : Sensitivities b/Q"j3  
    Sampling            : 2 0-f-  
    Nominal Criterion   : 0.54403234 (gB=!1/|G  
    Test Wavelength     : 0.6328 $%8n,FJ[  
    K"$ky,tU  
    :.df(1(RL  
    Fields: XY Symmetric Angle in degrees >*xzSd? \  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY U%\2drM&]  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 iquGLwJ  
    S*s9 ?  
    Sensitivity Analysis: *tPY  
    }0),b ?*e  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 5B/\vLHg4  
    Type                      Value      Criterion        Change          Value      Criterion        Change SJ+-H83x  
    Fringe tolerance on surface 1 B4O a7$M/U  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 $0 zL  
    Change in Focus                :      -0.000000                            0.000000 0\*<k`dY  
    Fringe tolerance on surface 2 *3($s_r>  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 cs;Gk:  
    Change in Focus                :       0.000000                            0.000000 xTm&`Xo  
    Fringe tolerance on surface 3 C,u.!g;lm  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 "T=LHjE  
    Change in Focus                :      -0.000000                            0.000000 4FdH:os  
    Thickness tolerance on surface 1 /2cOZ1G;  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 FuBRb(I  
    Change in Focus                :       0.000000                            0.000000 m uY^Fx  
    Thickness tolerance on surface 2 .6#2i <oPW  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 HbVm O]#$D  
    Change in Focus                :       0.000000                           -0.000000 Q3Lqj2r  
    Decenter X tolerance on surfaces 1 through 3 YWFHiB7x  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ve) :I  
    Change in Focus                :       0.000000                            0.000000 I!'(>VlP7  
    Decenter Y tolerance on surfaces 1 through 3 )\G#[Pc7  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 !W^II>Y  
    Change in Focus                :       0.000000                            0.000000 x%&V!L  
    Tilt X tolerance on surfaces 1 through 3 (degrees) -v@^6bQVp  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 j,jUg}b  
    Change in Focus                :       0.000000                            0.000000 n//a;m  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) O v6=|]cW  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 YO+d+5  
    Change in Focus                :       0.000000                            0.000000 t$iU|^'uV  
    Decenter X tolerance on surface 1 M - TK  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 CP^^ct-C  
    Change in Focus                :       0.000000                            0.000000 Wfy+7$14M  
    Decenter Y tolerance on surface 1 3I(H.u  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 WU_Q 7%+QS  
    Change in Focus                :       0.000000                            0.000000 &>{L"{  
    Tilt X tolerance on surface (degrees) 1 0AenDm@9  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 5w3'yA<vE  
    Change in Focus                :       0.000000                            0.000000 Mla,"~4D5  
    Tilt Y tolerance on surface (degrees) 1 %SXqJW^:  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 "H@AT$Ny(  
    Change in Focus                :       0.000000                            0.000000 n\U6oJN  
    Decenter X tolerance on surface 2 rD?o97  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 N@S;{uK  
    Change in Focus                :       0.000000                            0.000000 enM 3  
    Decenter Y tolerance on surface 2 '"a8<7  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 \g/E4U .+  
    Change in Focus                :       0.000000                            0.000000 v<4zcMv  
    Tilt X tolerance on surface (degrees) 2 {S!~pn&^Y  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 p9J(,}  
    Change in Focus                :       0.000000                            0.000000 Ycm1 _z  
    Tilt Y tolerance on surface (degrees) 2 5T`39[Fya  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 q~C6+  
    Change in Focus                :       0.000000                            0.000000 59u7q(  
    Decenter X tolerance on surface 3 GEgf_C!%@  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 LBR_Q0EP  
    Change in Focus                :       0.000000                            0.000000 @P/{x@J  
    Decenter Y tolerance on surface 3 UQ y+ &;#5  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $[e*0!e  
    Change in Focus                :       0.000000                            0.000000 J u7AxTf~  
    Tilt X tolerance on surface (degrees) 3 e2v,#3Q\  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ZN^Q!v  
    Change in Focus                :       0.000000                            0.000000 '|.u*M,b  
    Tilt Y tolerance on surface (degrees) 3 r38CPdE;}  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %' Fc%3  
    Change in Focus                :       0.000000                            0.000000 NDi@x"];  
    Irregularity of surface 1 in fringes ~mU#u\r(*  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 1L ow[i  
    Change in Focus                :       0.000000                            0.000000 APy a&TG  
    Irregularity of surface 2 in fringes HU'}c*d]  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 6|9fcIh]B  
    Change in Focus                :       0.000000                            0.000000 ):\L#>:w  
    Irregularity of surface 3 in fringes IiL?@pIq  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ;lldxS  
    Change in Focus                :       0.000000                            0.000000 q#1um @m3  
    Index tolerance on surface 1 O<5bsKw'r  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 l6RJour  
    Change in Focus                :       0.000000                            0.000000 =y ff.3mW\  
    Index tolerance on surface 2 &fWZ%C7|jC  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 WA+v&* ]  
    Change in Focus                :       0.000000                           -0.000000 *|cvx:GO  
    );C !:?  
    Worst offenders: MLJ8m  
    Type                      Value      Criterion        Change KMv|;yXYj4  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 yl*S|= 8;k  
    TSTY   2             0.20000000     0.35349910    -0.19053324 tfsG P]9$  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Q"\[ICu!,  
    TSTX   2             0.20000000     0.35349910    -0.19053324 |Ia46YS  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 SU1, +7"  
    TSTY   1             0.20000000     0.42678383    -0.11724851 _\"?:~rUN  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 MTQdyTDHl  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ?mMd6U&J  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Q8O38uZ  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ?tOzhrv  
    Jyn>:Yq(  
    Estimated Performance Changes based upon Root-Sum-Square method: b]Jh0B~Y  
    Nominal MTF                 :     0.54403234 I".r`$XZ  
    Estimated change            :    -0.36299231 tG6 o^  
    Estimated MTF               :     0.18104003 TE/2}XG)  
    R8a xdV9(  
    Compensator Statistics: JprZ6 >  
    Change in back focus: Z#0z#M`  
    Minimum            :        -0.000000 1}N5WBp  
    Maximum            :         0.000000 h/X),aK3  
    Mean               :        -0.000000 C>LkU|[  
    Standard Deviation :         0.000000 n1v%S"^  
    -7lJ  
    Monte Carlo Analysis: 4Hu.o7  
    Number of trials: 20 #fwG~Q(  
    (2S,0MHk  
    Initial Statistics: Normal Distribution 2o,%O91p  
    D[<8(~VP  
      Trial       Criterion        Change 1=s%.0  
          1     0.42804416    -0.11598818 Qv8Z64#  
    Change in Focus                :      -0.400171 K@h v[4  
          2     0.54384387    -0.00018847 upWq=_  
    Change in Focus                :       1.018470 =U?"#   
          3     0.44510003    -0.09893230 FG'1;x!  
    Change in Focus                :      -0.601922 yNO5h]o  
          4     0.18154684    -0.36248550 b afYjF< 3  
    Change in Focus                :       0.920681 S\Q/ "Y  
          5     0.28665820    -0.25737414 KktQA*G  
    Change in Focus                :       1.253875 "# JRw  
          6     0.21263372    -0.33139862 DS^PHk39  
    Change in Focus                :      -0.903878 *@/! h2  
          7     0.40051424    -0.14351809 h:l\kr|9  
    Change in Focus                :      -1.354815 l( "_JI  
          8     0.48754161    -0.05649072 98A ;R  
    Change in Focus                :       0.215922 & %1XYpA.0  
          9     0.40357468    -0.14045766 ]zu" x9-`  
    Change in Focus                :       0.281783 ,Xao{o(  
         10     0.26315315    -0.28087919 z"R-Sme  
    Change in Focus                :      -1.048393 G<$UcXg  
         11     0.26120585    -0.28282649 .' #_Z.zr  
    Change in Focus                :       1.017611 D\>CEBt  
         12     0.24033815    -0.30369419 <V9L AWeS  
    Change in Focus                :      -0.109292 0,,x|g$TpT  
         13     0.37164046    -0.17239188 s fazrz`h  
    Change in Focus                :      -0.692430 >0{{ loqq  
         14     0.48597489    -0.05805744 +DksWb D  
    Change in Focus                :      -0.662040 B;L~ hM  
         15     0.21462327    -0.32940907 :o=[Zp~B4d  
    Change in Focus                :       1.611296 3nxJ`W5j  
         16     0.43378226    -0.11025008 [CJ&Yz Ji  
    Change in Focus                :      -0.640081 fH>]>2fS  
         17     0.39321881    -0.15081353 |0dmdrKD  
    Change in Focus                :       0.914906 z6$W@-Vd  
         18     0.20692530    -0.33710703 ?-Fp rC  
    Change in Focus                :       0.801607 F+|zCEc  
         19     0.51374068    -0.03029165 rj<r6  
    Change in Focus                :       0.947293 ?HttqK)  
         20     0.38013374    -0.16389860 y$7<ZBG  
    Change in Focus                :       0.667010 Td}#o!4!  
    rE EWCt  
    Number of traceable Monte Carlo files generated: 20 GAV|x]R  
    2vT>hC?oHz  
    Nominal     0.54403234 -Y{P"!p0  
    Best        0.54384387    Trial     2 l$z\8]x  
    Worst       0.18154684    Trial     4 |lrLTI^a  
    Mean        0.35770970 7 i,}F|#8  
    Std Dev     0.11156454 pX+`qxF\  
    V07e29w  
    Pqi>,c<&mL  
    Compensator Statistics: '3 5w(  
    Change in back focus: r1]shb%J?  
    Minimum            :        -1.354815 D^$Nn*i;U  
    Maximum            :         1.611296 UJ<eF/KSmG  
    Mean               :         0.161872 4#!NVI3t  
    Standard Deviation :         0.869664 1@im+R?a  
    aovRm|aOo'  
    90% >       0.20977951               QD-#sU]  
    80% >       0.22748071               x/ lW=EQ  
    50% >       0.38667627               @;!s"!~sv  
    20% >       0.46553746               7'k+/rAO  
    10% >       0.50064115                lZ'-?xo  
    E80C0Q+V  
    End of Run. _0<qS{RW  
    dUyit-  
    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 x!"S`AM  
    dnSjXyjFB  
    zVFz}kJa  
    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 .n'z\] -/Q  
    8xW_N"P.>  
    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                 Ju4={^#  
    80% >       0.22748071                 gh>'O/9  
    50% >       0.38667627                 M}MXR=X,  
    20% >       0.46553746                 ]U.1z  
    10% >       0.50064115 h)2W}p{a4=  
    &>y[5#qOl  
    最后这个数值是MTF值呢，还是MTF的公差？ bR"hl? &c  
    H*BzwbM?  
    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？？？   /X>Fn9 mM  
    ]c%yib  
    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  : sbnNk(XINQ  
    90% >       0.20977951                 M-> /vi  
    80% >       0.22748071                 V^Gz7`^  
    50% >       0.38667627                 ` @.  
    20% >       0.46553746                 Z(g9rz']0  
    10% >       0.50064115 Oa7x(wS  
    ....... 9e^HTUFbG  
    !&4<"wQ  
    =R+z\`2  
    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   :5kgJu  
    Mode                : Sensitivities )Rhy^<xH  
    Sampling            : 2 M#v#3:&5  
    Nominal Criterion   : 0.54403234 Yr9>ATR  
    Test Wavelength     : 0.6328 B I9~% dm  
    l!Bc0  
    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？ &V. ps1  
    7D5;lM[_  
    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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