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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 C>=[fAr mO  
    vP @\"  
    ]; Z[V  
    G}V5PEF]`  
    然后添加了默认公差分析，基本没变 L}hc|(:  
    >X58 zlxk  
    2qgm(jo *y  
    @lhjO>@#I  
    然后运行分析的结果如下： Bid+,,  
    hYSzr-)  
    Analysis of Tolerances #e*jP&1S  
    3bBCA9^se  
    File : E:\光学设计资料\zemax练习\f500.ZMX $)v`roDD.  
    Title: {W11+L{8  
    Date : TUE JUN 21 2011 A8T75?lL(  
    3k_bhK zI  
    Units are Millimeters. <nk7vo?Ks  
    All changes are computed using linear differences. /3KPK4!m  
    S(ky:  
    Paraxial Focus compensation only. YW7Pimks  
    j0uu* )Rk  
    WARNING: Solves should be removed prior to tolerancing. r>,s-T!7  
    CwdeW.A"j  
    Mnemonics: 8_=MP[(H  
    TFRN: Tolerance on curvature in fringes. k/,7FDO?m  
    TTHI: Tolerance on thickness. ejh0Wfl  
    TSDX: Tolerance on surface decentering in x. A?+cdbxJw  
    TSDY: Tolerance on surface decentering in y. L )53o!  
    TSTX: Tolerance on surface tilt in x (degrees). EC`=nGF  
    TSTY: Tolerance on surface tilt in y (degrees). 6 6C_XT  
    TIRR: Tolerance on irregularity (fringes). qx f8f  
    TIND: Tolerance on Nd index of refraction. k}hTSL  
    TEDX: Tolerance on element decentering in x. mzm{p(.  
    TEDY: Tolerance on element decentering in y. ZGsI\3S  
    TETX: Tolerance on element tilt in x (degrees). khQ@DwO*\=  
    TETY: Tolerance on element tilt in y (degrees). wmDO^}>ZP  
    9NC?J@&B  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. (,I9|  
    8Xx4W^*_  
    WARNING: Boundary constraints on compensators will be ignored. `_+%  
    w<SFs#Z  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm E2i'lO\P  
    Mode                : Sensitivities FI8 vABq  
    Sampling            : 2 )F'r-I%Hi  
    Nominal Criterion   : 0.54403234 >!3r7LgK  
    Test Wavelength     : 0.6328 Y{I,ipU.  
    rr^?9M*{V  
    b<27XZ@  
    Fields: XY Symmetric Angle in degrees SQ la]%  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY T8NDS7&?  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 %Xe 74C"  
    W4p4[&c|  
    Sensitivity Analysis: V: n\skM  
    KXT9Wt=  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| {wh, "Ok_  
    Type                      Value      Criterion        Change          Value      Criterion        Change BF/l#)$yK  
    Fringe tolerance on surface 1 C+%6N@  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 NiBly  
    Change in Focus                :      -0.000000                            0.000000 ?p& ( Af)  
    Fringe tolerance on surface 2 &a!MT^anA~  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 JXQh$hs  
    Change in Focus                :       0.000000                            0.000000 0BP Ubp(  
    Fringe tolerance on surface 3 ~v6]6+   
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 2#Du5d  
    Change in Focus                :      -0.000000                            0.000000 |a!]Iqz"N  
    Thickness tolerance on surface 1 td5! S]  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 fk2p}  
    Change in Focus                :       0.000000                            0.000000 ;[B-!F>  
    Thickness tolerance on surface 2 gTb%c84  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 1O2jvt7M  
    Change in Focus                :       0.000000                           -0.000000 ']U<R=5T$  
    Decenter X tolerance on surfaces 1 through 3 vLIaTr gz  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 PVaqKCj:6W  
    Change in Focus                :       0.000000                            0.000000 .&2~g A  
    Decenter Y tolerance on surfaces 1 through 3 |_m N:(3  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 }v6@yU  
    Change in Focus                :       0.000000                            0.000000 PW+B&7{  
    Tilt X tolerance on surfaces 1 through 3 (degrees) B^@X1EE  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 x7!gmbMfK'  
    Change in Focus                :       0.000000                            0.000000 c2wgJH!g  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) s"~3.J  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 LnPG+<  
    Change in Focus                :       0.000000                            0.000000 ^@f.~4P*I  
    Decenter X tolerance on surface 1 ]cM,m2^2  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 X16vvsjw5  
    Change in Focus                :       0.000000                            0.000000 b6! 7 j  
    Decenter Y tolerance on surface 1 C#TP1~6  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 t!\B6!Fo  
    Change in Focus                :       0.000000                            0.000000 `r]C%Y4?  
    Tilt X tolerance on surface (degrees) 1 k [iT']  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 R(f6uO!m  
    Change in Focus                :       0.000000                            0.000000 {a0yHy$H  
    Tilt Y tolerance on surface (degrees) 1 SBg|V  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 g(dReC  
    Change in Focus                :       0.000000                            0.000000 o>HU4O}  
    Decenter X tolerance on surface 2 3fxcH  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 (_=R<:  
    Change in Focus                :       0.000000                            0.000000 O!P7Wu  
    Decenter Y tolerance on surface 2 z) x.6  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 nd }Z[)  
    Change in Focus                :       0.000000                            0.000000 M9~6ry-_  
    Tilt X tolerance on surface (degrees) 2 ]]P@*4!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $|t={s34  
    Change in Focus                :       0.000000                            0.000000 V[0 ZNT&  
    Tilt Y tolerance on surface (degrees) 2 M9Xq0BBu  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ajW2HH*9}A  
    Change in Focus                :       0.000000                            0.000000 ART0o7B  
    Decenter X tolerance on surface 3 ~l}\K10L*  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 W'6sY@0m  
    Change in Focus                :       0.000000                            0.000000 L *cP8v4  
    Decenter Y tolerance on surface 3 06z+xxCo  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 K[S)e!\.  
    Change in Focus                :       0.000000                            0.000000 VniU:A  
    Tilt X tolerance on surface (degrees) 3 -""(>$b 2  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 q6}KOO)  
    Change in Focus                :       0.000000                            0.000000 s8dP=_ `  
    Tilt Y tolerance on surface (degrees) 3 Qna*K7kv  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 0:JNkXZ:  
    Change in Focus                :       0.000000                            0.000000 a n0n8l  
    Irregularity of surface 1 in fringes Q/0oe())  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 iK!FVKi}  
    Change in Focus                :       0.000000                            0.000000 B!U;a=ia  
    Irregularity of surface 2 in fringes O8~RfB  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 -$$mrU  
    Change in Focus                :       0.000000                            0.000000 tX6_n%/L  
    Irregularity of surface 3 in fringes b[J0+l\!"  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 2"c5<  
    Change in Focus                :       0.000000                            0.000000  U4qk<!  
    Index tolerance on surface 1 8nwps(3  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Zv(6VVj  
    Change in Focus                :       0.000000                            0.000000 c Qe3  
    Index tolerance on surface 2 0lV;bVa%  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 >+DM TV[O  
    Change in Focus                :       0.000000                           -0.000000 "]|7%]  
    S gssNv  
    Worst offenders: ^7yaM B!  
    Type                      Value      Criterion        Change Bo\~PV[  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 2@IL  n+#  
    TSTY   2             0.20000000     0.35349910    -0.19053324 <s%Ft  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 GWLdz0`2_  
    TSTX   2             0.20000000     0.35349910    -0.19053324 b1;h6AeL  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ;y-:)7J  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ?Qx4Z3n  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 56 Z  
    TSTX   1             0.20000000     0.42678383    -0.11724851 UyFC\vQ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 _Tm]tlV  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ;NE4G;px4<  
    UD.ZnE{"  
    Estimated Performance Changes based upon Root-Sum-Square method: qHT73_R  
    Nominal MTF                 :     0.54403234 -9;?k{{[T  
    Estimated change            :    -0.36299231 4I .'./u  
    Estimated MTF               :     0.18104003 B&_Z&H=  
    T+B8SZw#}!  
    Compensator Statistics: /;{L~f=et)  
    Change in back focus: u-tD_UIck  
    Minimum            :        -0.000000 5=I"bnIU  
    Maximum            :         0.000000 y0-UO+ ;  
    Mean               :        -0.000000 H_Xk;fM  
    Standard Deviation :         0.000000 ^;F5ymb3U  
    ]0BX5Z'  
    Monte Carlo Analysis: A}}dc:$C  
    Number of trials: 20 <sw=:HU  
    n`@dk_%yI  
    Initial Statistics: Normal Distribution |5ge4,}0  
    f:y1eLl3  
      Trial       Criterion        Change 'Ebjn>"  
          1     0.42804416    -0.11598818 oz]&=>$1I  
    Change in Focus                :      -0.400171 q"oNFHYPDs  
          2     0.54384387    -0.00018847 o';/$xrH  
    Change in Focus                :       1.018470 UR9\g(  
          3     0.44510003    -0.09893230 l}r9kS  
    Change in Focus                :      -0.601922 ^do6?e`?-  
          4     0.18154684    -0.36248550 O&&_)  
    Change in Focus                :       0.920681 E m^Dg9  
          5     0.28665820    -0.25737414 |)C *i  
    Change in Focus                :       1.253875 HVhP |+  
          6     0.21263372    -0.33139862 "RM\<)IF  
    Change in Focus                :      -0.903878 jVZ<i}h0B  
          7     0.40051424    -0.14351809 J#ClQ%  
    Change in Focus                :      -1.354815 =9W\;xE S  
          8     0.48754161    -0.05649072 %n GjP^  
    Change in Focus                :       0.215922 ||.Hv[ ]V*  
          9     0.40357468    -0.14045766 $4~Z]-38#A  
    Change in Focus                :       0.281783 ^\kH^   
         10     0.26315315    -0.28087919 $d!Vxm  
    Change in Focus                :      -1.048393 >\3\&[#"  
         11     0.26120585    -0.28282649 t K/.9qP  
    Change in Focus                :       1.017611 U]w"T{;@.)  
         12     0.24033815    -0.30369419 k#u)+e.'  
    Change in Focus                :      -0.109292 Jp%5qBS^  
         13     0.37164046    -0.17239188 3"< 0_3?W  
    Change in Focus                :      -0.692430 V"'PA-z3  
         14     0.48597489    -0.05805744 ,hT.Ok={36  
    Change in Focus                :      -0.662040 yTh%[k  
         15     0.21462327    -0.32940907 X,#~[%h$-=  
    Change in Focus                :       1.611296 eG8 l^[  
         16     0.43378226    -0.11025008 )7[#Ti  
    Change in Focus                :      -0.640081 1_A_)l11  
         17     0.39321881    -0.15081353 )J0h\ky  
    Change in Focus                :       0.914906 awvP;F?q|  
         18     0.20692530    -0.33710703 h_+  
    Change in Focus                :       0.801607 nxx/26{  
         19     0.51374068    -0.03029165 E`V\/`5D  
    Change in Focus                :       0.947293 %[s%H)e)  
         20     0.38013374    -0.16389860 yN0`JI  
    Change in Focus                :       0.667010 Ej 5_d  
    -{8K/!  
    Number of traceable Monte Carlo files generated: 20 ?@;)2B|q  
    l'aCpzf  
    Nominal     0.54403234 P9f`<o  
    Best        0.54384387    Trial     2 B>m*!n: l  
    Worst       0.18154684    Trial     4 "}`)s_rt  
    Mean        0.35770970 h.F=Fhx/1  
    Std Dev     0.11156454 CfSP*g0rW  
    ;b~\ [  
    3)6-S  
    Compensator Statistics: V$w lOMp  
    Change in back focus: 'L-DMNxBr  
    Minimum            :        -1.354815 QkW'tU\^  
    Maximum            :         1.611296 dFDf/tH  
    Mean               :         0.161872 #0Y_!'j  
    Standard Deviation :         0.869664 < F;+A{M)  
    # Q,EL73;  
    90% >       0.20977951               ' h<(  
    80% >       0.22748071               {\%I;2X  
    50% >       0.38667627               7`&ISRU4  
    20% >       0.46553746               {7@*cB qN  
    10% >       0.50064115                B(94;,(  
    ^.\O)K {h  
    End of Run. d[J_iD{ &  
    MuQ)F-GSUu  
    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 PnaiSt9p?r  
    RR ^7/-  
    A;RV~!xx  
    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 \yFUQq:  
    vr'cR2  
    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                 62qjU<Z  
    80% >       0.22748071                 p\ ;|Z+0=  
    50% >       0.38667627                 yvoz 3_!  
    20% >       0.46553746                 o25rKC=o  
    10% >       0.50064115 !h7.xl OpN  
    Gw$5<%sB  
    最后这个数值是MTF值呢，还是MTF的公差？ >VkBQM-%  
    X]D,kKasG  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   R8Vf6]s_  
    pcwYgq#5  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : >5t%_/yeB  
    90% >       0.20977951                 q*l4h u%3  
    80% >       0.22748071                 3S:Lce'f  
    50% >       0.38667627                 m0"K^p  
    20% >       0.46553746                 U%nkPIFm  
    10% >       0.50064115 "tzu.V-  
    ....... P2-&Im`+  
    FvxM  
    .:r~?$(  
    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   YX0ysE*V:&  
    Mode                : Sensitivities f2i:I1 p("  
    Sampling            : 2 M3pE$KT0x  
    Nominal Criterion   : 0.54403234 o}OY,P  
    Test Wavelength     : 0.6328 0ns\:2)cEB  
    kJWg},-\  
    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？ 4<y   
    q< JCgO-F<  
    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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