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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 _^b@>C>O  
    pEkOSG  
    `1$y(w]  
    w`0)x5 TGR  
    然后添加了默认公差分析，基本没变 n_u`B|^Pj  
    W8x[3,gT  
    fZ{&dslg  
    ^ePsIl1E  
    然后运行分析的结果如下： bz$Qk;m=H  
    LjC6?a_?l  
    Analysis of Tolerances hMz&JJ&B  
    s{cKBau  
    File : E:\光学设计资料\zemax练习\f500.ZMX rWqkdi1  
    Title: cP, ;Qbe  
    Date : TUE JUN 21 2011 ,b:n1  
    ^IYJEqK  
    Units are Millimeters. s><IykIi  
    All changes are computed using linear differences. /<6ywLD  
    K`~BL=KI  
    Paraxial Focus compensation only. ;C+cE#   
    =p5?+3" @  
    WARNING: Solves should be removed prior to tolerancing. m,=)qex  
    QTeFR&q8  
    Mnemonics: mZ~mf->%  
    TFRN: Tolerance on curvature in fringes. )&XnM69~b  
    TTHI: Tolerance on thickness. r7RU"H:j8  
    TSDX: Tolerance on surface decentering in x. d b<q-u  
    TSDY: Tolerance on surface decentering in y. jzMhJ  
    TSTX: Tolerance on surface tilt in x (degrees). WBy[m ?d  
    TSTY: Tolerance on surface tilt in y (degrees). v;Swo("  
    TIRR: Tolerance on irregularity (fringes). Lr wINVa  
    TIND: Tolerance on Nd index of refraction. XynU/Go,  
    TEDX: Tolerance on element decentering in x. ~Vwk:+):  
    TEDY: Tolerance on element decentering in y. NoJUx['6  
    TETX: Tolerance on element tilt in x (degrees). m**0rpA  
    TETY: Tolerance on element tilt in y (degrees). y-%nJD$  
    ]c5DOv&  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. mMV2h|W   
    DgC3 > yL  
    WARNING: Boundary constraints on compensators will be ignored. ]NbX`'  
    E]\D>[0O  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 4}+xeGA$  
    Mode                : Sensitivities `i=JjgG@  
    Sampling            : 2 ZGA)r0] P`  
    Nominal Criterion   : 0.54403234 B%TXw#|  
    Test Wavelength     : 0.6328 \5t`p67Ve_  
    1V-=$Q3 V7  
    7t ZW^dF  
    Fields: XY Symmetric Angle in degrees s Ke,  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Fq vQk  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 1XqIPiXJ  
    aB=vu=hF  
    Sensitivity Analysis: KbXbT  
    @bc[ eas  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| h U 9\y  
    Type                      Value      Criterion        Change          Value      Criterion        Change 8mk}nex  
    Fringe tolerance on surface 1 j?Cr31  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 d&NCFx  
    Change in Focus                :      -0.000000                            0.000000 AGl|>f)  
    Fringe tolerance on surface 2 ;,<r|.6U  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 K5 5} Wi  
    Change in Focus                :       0.000000                            0.000000 wEBtre7  
    Fringe tolerance on surface 3 i:V0fBR[>  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 yJF 2  
    Change in Focus                :      -0.000000                            0.000000 os}b?I*K  
    Thickness tolerance on surface 1 "|(rVj=  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 gsLr=  
    Change in Focus                :       0.000000                            0.000000 ?H y%ULk  
    Thickness tolerance on surface 2 <Gn8B^~$  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 a];BW)  
    Change in Focus                :       0.000000                           -0.000000 <P|`7wfxE  
    Decenter X tolerance on surfaces 1 through 3 - P\S>G.  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 fndK/~?]H  
    Change in Focus                :       0.000000                            0.000000 nu#aa#ex>  
    Decenter Y tolerance on surfaces 1 through 3 _7rqXkp%  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 6W)xj6<@  
    Change in Focus                :       0.000000                            0.000000 &sI,8X2a2  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 8FxcI!A@  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 l5{(z;xM  
    Change in Focus                :       0.000000                            0.000000 vh<]aiY  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) "V*kOb&'*Z  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ATKYjhc _  
    Change in Focus                :       0.000000                            0.000000 9=Y,["br$_  
    Decenter X tolerance on surface 1 (:_%kmu  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 jHs<s`#h  
    Change in Focus                :       0.000000                            0.000000 @o}1n?w  
    Decenter Y tolerance on surface 1 08zi/g2 3  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 {D;Xa`:O  
    Change in Focus                :       0.000000                            0.000000 UiJ^~rn  
    Tilt X tolerance on surface (degrees) 1 RY\{=f  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 y3&Tv  
    Change in Focus                :       0.000000                            0.000000 :'5G_4y)h  
    Tilt Y tolerance on surface (degrees) 1 ?D RFsA  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 F3k C"H  
    Change in Focus                :       0.000000                            0.000000 *4(/t$)pEl  
    Decenter X tolerance on surface 2 ^/_\etV  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 r!{w93rPX  
    Change in Focus                :       0.000000                            0.000000 9F2w.(m  
    Decenter Y tolerance on surface 2 PWf{aHsr  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 :N^@a-  
    Change in Focus                :       0.000000                            0.000000 OSSd;ueur$  
    Tilt X tolerance on surface (degrees) 2 -D!#W%y8  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 cJU!zG  
    Change in Focus                :       0.000000                            0.000000 Q3B'-BZe  
    Tilt Y tolerance on surface (degrees) 2 Eg@R[ ^T  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 zznPD%#Sc  
    Change in Focus                :       0.000000                            0.000000 *k3 d^9o#  
    Decenter X tolerance on surface 3 '+ o:,6  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 c[wQJc  
    Change in Focus                :       0.000000                            0.000000 #,f}lV,&  
    Decenter Y tolerance on surface 3 o9U0kI=W  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 )'BJ4[aq\  
    Change in Focus                :       0.000000                            0.000000 JLy)}8I  
    Tilt X tolerance on surface (degrees) 3 "C$!mdr7  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 1R5\GKF6o  
    Change in Focus                :       0.000000                            0.000000 &+E'1h10  
    Tilt Y tolerance on surface (degrees) 3 f_i"/xC-/  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 |QAeQWP+1  
    Change in Focus                :       0.000000                            0.000000 4 |:Q1  
    Irregularity of surface 1 in fringes "!%w9  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 veYsctK~  
    Change in Focus                :       0.000000                            0.000000 }@ O|RkY  
    Irregularity of surface 2 in fringes /(hP7_]`2  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ]MqH13`)A  
    Change in Focus                :       0.000000                            0.000000 EzD -1sJ  
    Irregularity of surface 3 in fringes ,? 0-=o  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 IyG = 7  
    Change in Focus                :       0.000000                            0.000000 ooLnJ Y#  
    Index tolerance on surface 1 877EKvsiC  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 +E q~X=x  
    Change in Focus                :       0.000000                            0.000000 "Cyo<|  
    Index tolerance on surface 2 @yU!sE:  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 wzHjEW  
    Change in Focus                :       0.000000                           -0.000000 `_J^g&y~  
    :f?,]|]+-  
    Worst offenders: s0XRL1kWr  
    Type                      Value      Criterion        Change +!L_E6pyXE  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ADLa.{  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ;+r)j"W  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 p0[,$$pM  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Ac5o K  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 =M/ UHOY  
    TSTY   1             0.20000000     0.42678383    -0.11724851 RB lOTQjv  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Q !RVD*(  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Ww'TCWk@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 V 9QvQA r  
    TSTY   3             0.20000000     0.42861670    -0.11541563 eZR8<Z %  
    K\^&_#MG  
    Estimated Performance Changes based upon Root-Sum-Square method: ctc`^#q  
    Nominal MTF                 :     0.54403234 E1l\~%A  
    Estimated change            :    -0.36299231 DK@w^ZW6JA  
    Estimated MTF               :     0.18104003 D<_,>{$gW  
    &m%Pr  
    Compensator Statistics: FfD ,cDs  
    Change in back focus: AjL?Qh4  
    Minimum            :        -0.000000 aiR|.opIb  
    Maximum            :         0.000000 BuEQ^[Ex  
    Mean               :        -0.000000 |L.~Am d  
    Standard Deviation :         0.000000 |oBdryi  
    /,rF$5G,  
    Monte Carlo Analysis: aV?}+Y{#  
    Number of trials: 20 mf*9^}l+Zn  
    Lilk8|?#W  
    Initial Statistics: Normal Distribution ^O$[Y9~*  
    ~P]HG;$?n  
      Trial       Criterion        Change shDt&_n  
          1     0.42804416    -0.11598818 I7G\X#,iz  
    Change in Focus                :      -0.400171 6wpND|cT  
          2     0.54384387    -0.00018847 ?G>5 D`V  
    Change in Focus                :       1.018470 Z+``/Q]>+  
          3     0.44510003    -0.09893230 g<hv7?"[  
    Change in Focus                :      -0.601922 * 0&i'0>  
          4     0.18154684    -0.36248550 #)PGQ)(  
    Change in Focus                :       0.920681 t5X^(@q4N  
          5     0.28665820    -0.25737414 ^+- L;XkeY  
    Change in Focus                :       1.253875 J++sTQ(!?  
          6     0.21263372    -0.33139862 q*RaX 4V  
    Change in Focus                :      -0.903878 1(:=j Ofk  
          7     0.40051424    -0.14351809 /ie3H,2  
    Change in Focus                :      -1.354815 Iu1Sj`A  
          8     0.48754161    -0.05649072 }lNuf u  
    Change in Focus                :       0.215922 H%NLL4&wu  
          9     0.40357468    -0.14045766 ZB^4(F')H  
    Change in Focus                :       0.281783 wWOT*R_  
         10     0.26315315    -0.28087919 n7,6a  
    Change in Focus                :      -1.048393 JIY ^N9_  
         11     0.26120585    -0.28282649 #nc@!+  
    Change in Focus                :       1.017611 -YRL>]1  
         12     0.24033815    -0.30369419 3U9+l0mBa  
    Change in Focus                :      -0.109292 kXZV%mnT7  
         13     0.37164046    -0.17239188 >uPde5"ZF-  
    Change in Focus                :      -0.692430 X^ ^?}>t[  
         14     0.48597489    -0.05805744 Cj4b]*Q,  
    Change in Focus                :      -0.662040 vU$O{|J  
         15     0.21462327    -0.32940907 Z;~E+dXC  
    Change in Focus                :       1.611296 #`vGg9  
         16     0.43378226    -0.11025008 ~g4rGz  
    Change in Focus                :      -0.640081 Y^jnlS)h  
         17     0.39321881    -0.15081353 DO-K  
    Change in Focus                :       0.914906 a5U2[Ko80  
         18     0.20692530    -0.33710703 h-_0 A]  
    Change in Focus                :       0.801607 aD/,c1  
         19     0.51374068    -0.03029165 MY<!\4/  
    Change in Focus                :       0.947293 : 7DVc&0  
         20     0.38013374    -0.16389860 j=jrzG+`  
    Change in Focus                :       0.667010 B> " r-O  
    E-U;8cOMv  
    Number of traceable Monte Carlo files generated: 20 dW^_tzfF7  
    !DX/^b  
    Nominal     0.54403234 c7nk~K[6  
    Best        0.54384387    Trial     2 ^`>Ysc(@&  
    Worst       0.18154684    Trial     4 |v %RjN  
    Mean        0.35770970 Znl>*e/|  
    Std Dev     0.11156454 u&d v[  
    DHumBnQ  
    ^SSOh#  
    Compensator Statistics: k89gJ5B$  
    Change in back focus: p4t!T=o/  
    Minimum            :        -1.354815 L^al1T  
    Maximum            :         1.611296 %]sEt{  
    Mean               :         0.161872 VF!kr1n!  
    Standard Deviation :         0.869664 >/HU'  
    6 9I.*[  
    90% >       0.20977951               vkd<l&zD  
    80% >       0.22748071               v"('_!  
    50% >       0.38667627               4FHX#`  
    20% >       0.46553746               D)~nAkVq  
    10% >       0.50064115                ) Q  
    > %cWTC  
    End of Run. ]S2[eS  
    eGypXf%  
    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 X3=Jp'p$h  
    x< y[na  
    /2\= sTd  
    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 KjfKo;T  
    pQMpkAX  
    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                 o-<_X&"a|5  
    80% >       0.22748071                 =2)$|KC  
    50% >       0.38667627                 F`V[G(f+r  
    20% >       0.46553746                 l3#dfW{  
    10% >       0.50064115 tBI+uu aa2  
    '\E{qlI  
    最后这个数值是MTF值呢，还是MTF的公差？ U\ E{-7  
    (tLQX~Ur  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   i\4"FO?v  
    V42*4hskL  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : =e{KtX.  
    90% >       0.20977951                 6YGr"Kj &  
    80% >       0.22748071                 u$p|hd d  
    50% >       0.38667627                 ^O*hs%eO%  
    20% >       0.46553746                 # h|< >  
    10% >       0.50064115 K"$ky,tU  
    ....... n(S-F g  
    x#mk[SV  
    q\Kdu5x{  
    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   C,u.!g;lm  
    Mode                : Sensitivities !iOu07<n&D  
    Sampling            : 2 B*N8:u  
    Nominal Criterion   : 0.54403234 ~J:lC u  
    Test Wavelength     : 0.6328 (oEA)yc|  
    ovFfTP<3V  
    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？ U6PUt'Kk@  
    ]!w52kF7  
    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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