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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 W ]?G}Q;  
    s.QwSbw-g  
    +RMSA^  
    SaAFz&WRl  
    然后添加了默认公差分析，基本没变 .*S#aq4S  
    ^Hnb }L  
    Ru!iR#s)!  
    )|R)Q6UJ  
    然后运行分析的结果如下： li'YDtMKCY  
    J~ zUp(>K  
    Analysis of Tolerances o!Ieb  
    6"5A%{ J  
    File : E:\光学设计资料\zemax练习\f500.ZMX gpvYb7Of0  
    Title: *-=(Q`3  
    Date : TUE JUN 21 2011 Ls$D$/:q?  
    gw3K+P  
    Units are Millimeters. PI:4m%[  
    All changes are computed using linear differences. .*?wF  
    FQ7T'G![  
    Paraxial Focus compensation only. t?-n*9,#S  
    8f)?{AX0  
    WARNING: Solves should be removed prior to tolerancing. z2_*%S@  
    =_ ./~  
    Mnemonics: vkx7paY_  
    TFRN: Tolerance on curvature in fringes. $=8  NED5  
    TTHI: Tolerance on thickness. *K6g\f]b#  
    TSDX: Tolerance on surface decentering in x. b_#m}yZ6  
    TSDY: Tolerance on surface decentering in y. %Ycy{`  
    TSTX: Tolerance on surface tilt in x (degrees). gx8ouOh  
    TSTY: Tolerance on surface tilt in y (degrees). t?x<g<PJ4  
    TIRR: Tolerance on irregularity (fringes). k}kQI~S9  
    TIND: Tolerance on Nd index of refraction. , j2Udn}  
    TEDX: Tolerance on element decentering in x. 7{)G_?Q&  
    TEDY: Tolerance on element decentering in y. 2G67NC?+  
    TETX: Tolerance on element tilt in x (degrees). %S@ZXf~:  
    TETY: Tolerance on element tilt in y (degrees). RK'\C\gMDu  
    tqvN0vY5  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 0d"[l@UU0  
    p$NQyS5C"S  
    WARNING: Boundary constraints on compensators will be ignored. Pw7]r<Q  
    <ro7vPKNa  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm LqoB 10Kc\  
    Mode                : Sensitivities F3v !AvA|  
    Sampling            : 2 B:;pvW]  
    Nominal Criterion   : 0.54403234 j9x<Y]  
    Test Wavelength     : 0.6328 HZzDVCU  
    .779pT!,M  
    L%*!`TN  
    Fields: XY Symmetric Angle in degrees 3nIU1e  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Sz)' ogl  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 SO|NaqWa  
    fNli  
    Sensitivity Analysis: 5,Jp[bw{H{  
    zUkgG61  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| E:sf{B'&  
    Type                      Value      Criterion        Change          Value      Criterion        Change N ,'GN[s  
    Fringe tolerance on surface 1 g|DF[  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ENl)Ts`y  
    Change in Focus                :      -0.000000                            0.000000 ]_mb7X>  
    Fringe tolerance on surface 2 ';w#w<yaI  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 UN;H+gNnN  
    Change in Focus                :       0.000000                            0.000000 -[4T  
    Fringe tolerance on surface 3 jiV<+T?  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ~drS} V  
    Change in Focus                :      -0.000000                            0.000000 n71r_S*  
    Thickness tolerance on surface 1 Xk~D$~4<  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525  4C6YO  
    Change in Focus                :       0.000000                            0.000000 NR 5gj-B[  
    Thickness tolerance on surface 2 a?I= !js  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ?/wm(uL  
    Change in Focus                :       0.000000                           -0.000000 :}L[sl\R  
    Decenter X tolerance on surfaces 1 through 3 \+oQd=K@  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]}<}lI9  
    Change in Focus                :       0.000000                            0.000000 [i21FX  
    Decenter Y tolerance on surfaces 1 through 3 {nBhdM:i  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ~RW+ GTe  
    Change in Focus                :       0.000000                            0.000000 >a!/QMh  
    Tilt X tolerance on surfaces 1 through 3 (degrees) Thp[+KP>  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 aD<A.Lhy  
    Change in Focus                :       0.000000                            0.000000 |sJ[0z  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) :)-Sk$  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,8S/t+H  
    Change in Focus                :       0.000000                            0.000000 O@T9x$  
    Decenter X tolerance on surface 1 |k )=0mCz  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 YFLZ%(  
    Change in Focus                :       0.000000                            0.000000 1![!+X:w  
    Decenter Y tolerance on surface 1 .9/ hHCp  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 rT=rrvV3g  
    Change in Focus                :       0.000000                            0.000000 #5Qpu  
    Tilt X tolerance on surface (degrees) 1 WrnrFz  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 FZ{h?#2?  
    Change in Focus                :       0.000000                            0.000000 9%o 32eo,3  
    Tilt Y tolerance on surface (degrees) 1 SXSgld2uS  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 G)AqbY  
    Change in Focus                :       0.000000                            0.000000 =m]v8`g  
    Decenter X tolerance on surface 2 }kw#7m54  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 DTX0  
    Change in Focus                :       0.000000                            0.000000 :(E@Gf  
    Decenter Y tolerance on surface 2 ?(@ 7r_j  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 <O(4TO  
    Change in Focus                :       0.000000                            0.000000 mxvp3t \  
    Tilt X tolerance on surface (degrees) 2 8 `v-<J  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 `[y^ :mj  
    Change in Focus                :       0.000000                            0.000000 !4ocZmj\  
    Tilt Y tolerance on surface (degrees) 2 aj-Km`5r}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Hc;[Cs0  
    Change in Focus                :       0.000000                            0.000000 +r�  
    Decenter X tolerance on surface 3 prUN)r@U   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Fx]WCQo  
    Change in Focus                :       0.000000                            0.000000 k90YV(  
    Decenter Y tolerance on surface 3 I {SjlN}d  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 pE3?"YO  
    Change in Focus                :       0.000000                            0.000000 3p$?,0ELH  
    Tilt X tolerance on surface (degrees) 3 ~T"Rw2v b  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 U"~>jZKk  
    Change in Focus                :       0.000000                            0.000000 'NbHa!  
    Tilt Y tolerance on surface (degrees) 3 '9%\;  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 `_6C {<O  
    Change in Focus                :       0.000000                            0.000000 [@_Jj3`4  
    Irregularity of surface 1 in fringes OW&!at  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 &Gc9VF]o  
    Change in Focus                :       0.000000                            0.000000 \:P>le'1  
    Irregularity of surface 2 in fringes "syI#U{  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 j}#w )M  
    Change in Focus                :       0.000000                            0.000000 ,=uD^n:  
    Irregularity of surface 3 in fringes "6("9"  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 SjK  
    Change in Focus                :       0.000000                            0.000000 8:q1~`?5"b  
    Index tolerance on surface 1 ]HbY  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578  }t!Gey  
    Change in Focus                :       0.000000                            0.000000 lPe&h]@ >  
    Index tolerance on surface 2 7kC^ 30@T3  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 !@5 9)  
    Change in Focus                :       0.000000                           -0.000000 %J}xg^+f  
    m%0p\Y-/  
    Worst offenders: ~kV/!=  
    Type                      Value      Criterion        Change Do9x XK  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 YByLoM*  
    TSTY   2             0.20000000     0.35349910    -0.19053324 .w:DFk^E]b  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 6u?>M9  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ),_@WW;k  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 )|cc X  
    TSTY   1             0.20000000     0.42678383    -0.11724851 9FF0%*tGo  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 "BAK !N$9  
    TSTX   1             0.20000000     0.42678383    -0.11724851 *nd!)t  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 v<k?Vu  
    TSTY   3             0.20000000     0.42861670    -0.11541563 T%+ #xl  
    t <~h'U  
    Estimated Performance Changes based upon Root-Sum-Square method: -$\y_?}  
    Nominal MTF                 :     0.54403234 zxEL+P  
    Estimated change            :    -0.36299231 pt?bWyKG  
    Estimated MTF               :     0.18104003 3s*mbk[J  
    ,.S~ Y  
    Compensator Statistics: />C^WQI^  
    Change in back focus: P|`8}|}a  
    Minimum            :        -0.000000 vo?9(+:|e  
    Maximum            :         0.000000 cUk7i`M;6  
    Mean               :        -0.000000 v{RZJ^1  
    Standard Deviation :         0.000000 1> ?M>vK  
    #x@$ lc=k3  
    Monte Carlo Analysis: UJUEYG  
    Number of trials: 20 , };& tR  
    ]U?^hZ_  
    Initial Statistics: Normal Distribution m5n #v  
    $L `d&$Vh  
      Trial       Criterion        Change ?PLPf>e  
          1     0.42804416    -0.11598818 #I.+aV+2oQ  
    Change in Focus                :      -0.400171 \Dm";Ay>  
          2     0.54384387    -0.00018847 Brw@g8w-X  
    Change in Focus                :       1.018470 RIR\']WN  
          3     0.44510003    -0.09893230 ?9vuuIE  
    Change in Focus                :      -0.601922 a"1t-x  
          4     0.18154684    -0.36248550 2 B1q*`6R  
    Change in Focus                :       0.920681 wKh4|Ka  
          5     0.28665820    -0.25737414 i%iL[id:w  
    Change in Focus                :       1.253875 !"AvY y9  
          6     0.21263372    -0.33139862 E#34Wh2z  
    Change in Focus                :      -0.903878 y G~?MEh{  
          7     0.40051424    -0.14351809 fy1|$d{'  
    Change in Focus                :      -1.354815 /A\8 mL8  
          8     0.48754161    -0.05649072 I@\lN&HC  
    Change in Focus                :       0.215922 Ng&%o  
          9     0.40357468    -0.14045766 AD> e?u  
    Change in Focus                :       0.281783 ;._ l 0Jw  
         10     0.26315315    -0.28087919 E, Z$pKL?  
    Change in Focus                :      -1.048393 >dXGee>'M  
         11     0.26120585    -0.28282649 ]|pe>:gf'  
    Change in Focus                :       1.017611 (M|Dx\_  
         12     0.24033815    -0.30369419 d7^}tM  
    Change in Focus                :      -0.109292 u~N?N W Q  
         13     0.37164046    -0.17239188 HdI8f!X'TG  
    Change in Focus                :      -0.692430 krxo"WgD  
         14     0.48597489    -0.05805744 Z{.8^u1I  
    Change in Focus                :      -0.662040 UBKu /@[f@  
         15     0.21462327    -0.32940907 @)+AaC#-  
    Change in Focus                :       1.611296 &<g|gsG`  
         16     0.43378226    -0.11025008  0q  
    Change in Focus                :      -0.640081 &, vcJ{.  
         17     0.39321881    -0.15081353 `cn#B BV  
    Change in Focus                :       0.914906 3d8L6GJ  
         18     0.20692530    -0.33710703 ;<Sd~M4f  
    Change in Focus                :       0.801607 Ufj`euY  
         19     0.51374068    -0.03029165 1.JK3 3  
    Change in Focus                :       0.947293 ;1W6G=m  
         20     0.38013374    -0.16389860 L< S9  
    Change in Focus                :       0.667010 \&:nFb%=  
    g9pZ\$J&  
    Number of traceable Monte Carlo files generated: 20 .<?GS{6 N  
    ? V1*cVD6i  
    Nominal     0.54403234 T~?Ff|qFC  
    Best        0.54384387    Trial     2 P{`C^W$J^  
    Worst       0.18154684    Trial     4 E`JI>7  
    Mean        0.35770970 g'f@H-KCD  
    Std Dev     0.11156454  N];NAMp  
    `RT>}_j  
    68|E9^`l  
    Compensator Statistics: ;V_e>TyG  
    Change in back focus: ]EbM9Fo-U  
    Minimum            :        -1.354815 M t|zyXyzX  
    Maximum            :         1.611296 YMyfL8bO  
    Mean               :         0.161872 ;O5zUl-`  
    Standard Deviation :         0.869664 S72+d%$  
    Y Uc+0  
    90% >       0.20977951               ,pfG  
    80% >       0.22748071               S}3fr^{.  
    50% >       0.38667627               bP#:Oi0v`  
    20% >       0.46553746               \w>y`\6mX  
    10% >       0.50064115                "Y.tht H  
    2|y"!JqE1  
    End of Run. m 0C@G5  
    hag$GX'2k  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 @7c?xQVd$  
    \7eUw,~Q>  
    /<k/7TF`  
    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% B>M7-=  
    Es`Px_k  
    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                 MchA{p&Ol  
    80% >       0.22748071                 I 34>X`[o  
    50% >       0.38667627                 gVuFHHeUz  
    20% >       0.46553746                 +=h:Vb8  
    10% >       0.50064115 #X$\&,Yn"  
    T763:v  
    最后这个数值是MTF值呢，还是MTF的公差？ ?$pCsBDo  
    9=tIz  
    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？？？   q<<v,ihh  
    e`s ~.ZF  
    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  : F41=b4/  
    90% >       0.20977951                 yf+)6D -9n  
    80% >       0.22748071                 a=2%4Wmz  
    50% >       0.38667627                 0h_|t-9j  
    20% >       0.46553746                 7NGxa6wi  
    10% >       0.50064115 z:*|a+cy  
    ....... 6&x@.1('z  
    =,M5KDk`  
    5j(k:a+!H  
    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   M= (u]%\  
    Mode                : Sensitivities })%{AfDRF  
    Sampling            : 2 ]f_p 8?j"  
    Nominal Criterion   : 0.54403234 yWSGi#)1  
    Test Wavelength     : 0.6328 @yYkti;4-  
    ~"!fP3"e  
    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？ "{t$nVJ  
    OyIw>Wfv  
    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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