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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 r%/*,lLO  
    *.DTcV  
    yS[Z%]bvU  
    -v(.]`Wo&;  
    然后添加了默认公差分析，基本没变 l;dZJ_Ut$  
    NN9` jP2  
    uE6;;Ir#mF  
    BEzF'<Z  
    然后运行分析的结果如下： 6DG:imGl  
    Q7 Clr{&  
    Analysis of Tolerances eiaL zI,O  
    B|Rnh;B-  
    File : E:\光学设计资料\zemax练习\f500.ZMX x`vIY-DS  
    Title: r%g?.4o*b  
    Date : TUE JUN 21 2011 ''f07R  
    Uaho.(_GP  
    Units are Millimeters. N'nqVYTU  
    All changes are computed using linear differences. }'KVi=qnHb  
    VzR (O B  
    Paraxial Focus compensation only. YolO-5  
    _ s]=g  
    WARNING: Solves should be removed prior to tolerancing. *8uSy/l  
    v^h \E+@  
    Mnemonics: ?N,'1I  
    TFRN: Tolerance on curvature in fringes. l*|^mx^Q  
    TTHI: Tolerance on thickness. "3*Chc  
    TSDX: Tolerance on surface decentering in x. Xh/i5}5 t  
    TSDY: Tolerance on surface decentering in y. j3bTa|UdT  
    TSTX: Tolerance on surface tilt in x (degrees). 64^dy V,;  
    TSTY: Tolerance on surface tilt in y (degrees). Ab <4F 7  
    TIRR: Tolerance on irregularity (fringes). `A)9   
    TIND: Tolerance on Nd index of refraction. ~R]E=/m|  
    TEDX: Tolerance on element decentering in x. QM1-w^  
    TEDY: Tolerance on element decentering in y. .3%eSbt0  
    TETX: Tolerance on element tilt in x (degrees). 6s833Tmb&r  
    TETY: Tolerance on element tilt in y (degrees). G"= tQ$ZU  
    d]OoJK9&&  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. pHFh7-vj  
    HV`{YuP  
    WARNING: Boundary constraints on compensators will be ignored. ,*2%6t`N?  
    Ds$8$1=L=k  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm |#x;}_>7  
    Mode                : Sensitivities Rla4XN=mf  
    Sampling            : 2 66?!"w  
    Nominal Criterion   : 0.54403234 _M+'30  
    Test Wavelength     : 0.6328 A / N$  
    b'^OW  
    )>atoA  
    Fields: XY Symmetric Angle in degrees _dj< xPO  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY zi23k=  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ~pn9x;N%H  
    U RDb  
    Sensitivity Analysis: oW-Tw@D  
    z I`'n%n=  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| w~EXO;L2  
    Type                      Value      Criterion        Change          Value      Criterion        Change "aN<3b  
    Fringe tolerance on surface 1 z0Vd(QL  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 BciwS_Qx  
    Change in Focus                :      -0.000000                            0.000000 $jb0/  
    Fringe tolerance on surface 2 v.)'b e*u  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 fMr6ZmB  
    Change in Focus                :       0.000000                            0.000000 PKR0y%Ar  
    Fringe tolerance on surface 3 Wxg,y{(`  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 z12[vN  
    Change in Focus                :      -0.000000                            0.000000 BbZ-dXC<  
    Thickness tolerance on surface 1 ^Ois]#py  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 lnW/T--  
    Change in Focus                :       0.000000                            0.000000 `LnLd;Z  
    Thickness tolerance on surface 2 .b]g# Du=  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 l!\C"f1o,  
    Change in Focus                :       0.000000                           -0.000000 ](NSpU|*  
    Decenter X tolerance on surfaces 1 through 3 C8cB Lsa[J  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 rd\mFz-SB  
    Change in Focus                :       0.000000                            0.000000 _> .TB\  
    Decenter Y tolerance on surfaces 1 through 3 t'4hWNR'  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 a J[VX)"J  
    Change in Focus                :       0.000000                            0.000000 4x=rew>Ew  
    Tilt X tolerance on surfaces 1 through 3 (degrees) sMli!u  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 h[3N/yP  
    Change in Focus                :       0.000000                            0.000000 *Xt#04_  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) :7IL|bA<  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 C/e`O|G  
    Change in Focus                :       0.000000                            0.000000 a=gTGG"9  
    Decenter X tolerance on surface 1 ?]f+)tCMs  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 -B$oq8)n*  
    Change in Focus                :       0.000000                            0.000000 <\?ySto  
    Decenter Y tolerance on surface 1 $Ha?:jSc  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 WUAjb,eo  
    Change in Focus                :       0.000000                            0.000000 o(>!T=f  
    Tilt X tolerance on surface (degrees) 1 '/SMqmi  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 h$~ NPX  
    Change in Focus                :       0.000000                            0.000000 fu9y3`  
    Tilt Y tolerance on surface (degrees) 1 a2UER1Yp"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 P6S^wjk  
    Change in Focus                :       0.000000                            0.000000 d6<,R;)  
    Decenter X tolerance on surface 2 >DQl&:-)t  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ('W#r"  
    Change in Focus                :       0.000000                            0.000000 J$&!Y[0  
    Decenter Y tolerance on surface 2 iBxCk^  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 S D] d/|y  
    Change in Focus                :       0.000000                            0.000000 @fT*fv   
    Tilt X tolerance on surface (degrees) 2 AZorzQ]s  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 x 3#1  
    Change in Focus                :       0.000000                            0.000000 5|x FY/%  
    Tilt Y tolerance on surface (degrees) 2 w@.E}%bwq  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $2 Ox;+  
    Change in Focus                :       0.000000                            0.000000 $WnK  
    Decenter X tolerance on surface 3 8;p6~&).C~  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 H0 km*5Sn  
    Change in Focus                :       0.000000                            0.000000 v@`#!iu  
    Decenter Y tolerance on surface 3 %fh ,e5(LT  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 !y'LKze+G  
    Change in Focus                :       0.000000                            0.000000 B c*Rn3i@  
    Tilt X tolerance on surface (degrees) 3 XV)ej>A-V  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 _+wou(1y  
    Change in Focus                :       0.000000                            0.000000 FM0)/6I'x  
    Tilt Y tolerance on surface (degrees) 3 W$B>O  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %H~q3|z  
    Change in Focus                :       0.000000                            0.000000 '\l(.N  
    Irregularity of surface 1 in fringes N+b" LZc  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 v/8K?$"q  
    Change in Focus                :       0.000000                            0.000000 <N=p_m 2T  
    Irregularity of surface 2 in fringes R"!.|fH6  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 :De}5BMy  
    Change in Focus                :       0.000000                            0.000000 q*@7A6:FV>  
    Irregularity of surface 3 in fringes E0>4Q\n{  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 JV/K ouL  
    Change in Focus                :       0.000000                            0.000000 W&}R7a@:<~  
    Index tolerance on surface 1 D^04b< O<x  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 QT9(s\u  
    Change in Focus                :       0.000000                            0.000000 a>.2Q<1  
    Index tolerance on surface 2 ;6L<Syl5  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 aIRCz=N  
    Change in Focus                :       0.000000                           -0.000000 K4N~ApLB+  
    T5-50nU,~  
    Worst offenders: wP6~HiC  
    Type                      Value      Criterion        Change E4HG`_cWb  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 I &YYw8&  
    TSTY   2             0.20000000     0.35349910    -0.19053324 =JOupw  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 6t *pV [  
    TSTX   2             0.20000000     0.35349910    -0.19053324 (".`#909  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 `;*Wt9  
    TSTY   1             0.20000000     0.42678383    -0.11724851 8K]fw{-$L  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 IpoZ6DB$  
    TSTX   1             0.20000000     0.42678383    -0.11724851 7sC$hm]  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 [O&2!x  
    TSTY   3             0.20000000     0.42861670    -0.11541563 zr\I1v]?1#  
    L<J';#BD  
    Estimated Performance Changes based upon Root-Sum-Square method: 2!-ZNd:(+  
    Nominal MTF                 :     0.54403234 c*1t<OAS~  
    Estimated change            :    -0.36299231 W~POS'1  
    Estimated MTF               :     0.18104003 8PDt 7 \  
    <3LyNG.  
    Compensator Statistics: f&js,NU"  
    Change in back focus:  |UZ#2  
    Minimum            :        -0.000000 f /&Dy'OV7  
    Maximum            :         0.000000 <)uUAh  
    Mean               :        -0.000000 R4_4FEo  
    Standard Deviation :         0.000000 x5WFPY$wM  
    /$! / F@^  
    Monte Carlo Analysis: Gz+Bk5#{  
    Number of trials: 20 Q SW03/_f  
    { e<J}-/?  
    Initial Statistics: Normal Distribution >E#| H6gx  
    62PtR`b >  
      Trial       Criterion        Change &AU%3b  
          1     0.42804416    -0.11598818 XGFU *g`kq  
    Change in Focus                :      -0.400171 3:PBVt=  
          2     0.54384387    -0.00018847 I$n 0aR6  
    Change in Focus                :       1.018470 P cnr  
          3     0.44510003    -0.09893230 14]!LgH  
    Change in Focus                :      -0.601922 9FP6Z[4  
          4     0.18154684    -0.36248550 ?#<Fxme  
    Change in Focus                :       0.920681 e/r41  
          5     0.28665820    -0.25737414 X<x"\Yk  
    Change in Focus                :       1.253875 n (C*LK  
          6     0.21263372    -0.33139862 [~W"$sT  
    Change in Focus                :      -0.903878 8%_XJyg  
          7     0.40051424    -0.14351809 ]N*q3y|)  
    Change in Focus                :      -1.354815 V.XHjHT  
          8     0.48754161    -0.05649072 ZK27^oG  
    Change in Focus                :       0.215922 hWJ\dwF  
          9     0.40357468    -0.14045766 ^e"BY(  
    Change in Focus                :       0.281783 Gk;==~  
         10     0.26315315    -0.28087919 |<\o%89AM  
    Change in Focus                :      -1.048393 sw[1T_S>  
         11     0.26120585    -0.28282649 )r~$N0\D  
    Change in Focus                :       1.017611 `ihlKFX  
         12     0.24033815    -0.30369419 H2BD5  
    Change in Focus                :      -0.109292 f` 2W}|(jA  
         13     0.37164046    -0.17239188 O/e5LA  
    Change in Focus                :      -0.692430 `l9Pk\X[  
         14     0.48597489    -0.05805744 I?G m  
    Change in Focus                :      -0.662040 MSUkCWt!  
         15     0.21462327    -0.32940907 k_r12Bu  
    Change in Focus                :       1.611296 *Y?rls`  
         16     0.43378226    -0.11025008 b*',(J94  
    Change in Focus                :      -0.640081 JX7_/P  
         17     0.39321881    -0.15081353 O"<D0xzF?  
    Change in Focus                :       0.914906 izebQVQO*  
         18     0.20692530    -0.33710703 W#P)v{K  
    Change in Focus                :       0.801607 Ett%Y*D+J  
         19     0.51374068    -0.03029165 T6=c9f?7  
    Change in Focus                :       0.947293 B[Fx2r`0  
         20     0.38013374    -0.16389860 MH.,dB&  
    Change in Focus                :       0.667010 Lco JltY{5  
    V k5}d[[l  
    Number of traceable Monte Carlo files generated: 20 T\:Vu{|  
    .2q7X{4=  
    Nominal     0.54403234 WogJ~N,d53  
    Best        0.54384387    Trial     2 KqG:o+V=  
    Worst       0.18154684    Trial     4 ()6(eRGJ  
    Mean        0.35770970  \U(qv(T  
    Std Dev     0.11156454 v?,_SVgAi  
    +;c)GNQ)6:  
    #(j'?|2o%  
    Compensator Statistics: ^ b{0|:  
    Change in back focus: e[$=5U~c  
    Minimum            :        -1.354815 1\z5[ _  
    Maximum            :         1.611296 \rn:/  
    Mean               :         0.161872 [w' Y3U\ i  
    Standard Deviation :         0.869664 Obgn?TAVX  
    26B]b{Iz{  
    90% >       0.20977951               #K.OJJaG  
    80% >       0.22748071               @Hw#O33/'  
    50% >       0.38667627               i^eU!^KF  
    20% >       0.46553746               X!ZUR^  
    10% >       0.50064115                RZ#b)l  
    w!,~#hbt6  
    End of Run. u27K 0}  
    -"Wp L2qD  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 >B<jR$`6@  
    |k1(|)%G  
    "_WOt Jr  
    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 J.W0F #?  
    {U?/u93~  
    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                 Mtxn@m{i;"  
    80% >       0.22748071                 P(AcDG6K  
    50% >       0.38667627                 3"afrA  
    20% >       0.46553746                 U0>Uqk",  
    10% >       0.50064115 Ot,eAiaX  
    sg0HYb%_E  
    最后这个数值是MTF值呢，还是MTF的公差？ (#,0\ea{x  
    6WUP#c@{  
    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？？？   ${fJ]  
    |hGi8  
    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  : J|Af`HJ  
    90% >       0.20977951                 vH`m W`=  
    80% >       0.22748071                 Xj;\ROBH-  
    50% >       0.38667627                 t93iU?Z  
    20% >       0.46553746                 V( /=0H/ F  
    10% >       0.50064115 zLeId83>  
    ....... yEvuTgDv  
    qYi<GI*|@  
    Q|3SYJf  
    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   1!;}#m7v  
    Mode                : Sensitivities 0xNlO9b/  
    Sampling            : 2 wd=xs7Dz<p  
    Nominal Criterion   : 0.54403234 p| #gn<z}  
    Test Wavelength     : 0.6328 [;]@PKW?w  
    TYs#v/)I  
    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？ BBg&ZIYEh  
    >QusXD"L>  
    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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