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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 d\WnuQR[  
    GxL5yeN@(  
    &uI`Xq.  
    'Pk ( 1:  
    然后添加了默认公差分析，基本没变 W! v8'T  
    dU+28  
    I:Wrwd  
    J'`,];su  
    然后运行分析的结果如下： !>W _3Ea  
    @x3x/g U  
    Analysis of Tolerances 'z0@|a  
    y)X1!3~(  
    File : E:\光学设计资料\zemax练习\f500.ZMX D|} y{~  
    Title: O+A/thI%*S  
    Date : TUE JUN 21 2011 .e%PK  
    m!L&_ Z|j  
    Units are Millimeters. (dvCejc^p  
    All changes are computed using linear differences. 'kPc`) \  
    B@D3aOvO  
    Paraxial Focus compensation only. C vfm ,BL  
    ,Ua`BWF  
    WARNING: Solves should be removed prior to tolerancing. y[BUWas(  
    Q"n|<!DN  
    Mnemonics: ;0(|06=  
    TFRN: Tolerance on curvature in fringes. (Vnv"= (  
    TTHI: Tolerance on thickness. N '2Nv  
    TSDX: Tolerance on surface decentering in x. V\r!H>  
    TSDY: Tolerance on surface decentering in y. 7'\<\oT  
    TSTX: Tolerance on surface tilt in x (degrees). yyb8l l?@a  
    TSTY: Tolerance on surface tilt in y (degrees). _"%mLH=!8  
    TIRR: Tolerance on irregularity (fringes). '+LC.lM  
    TIND: Tolerance on Nd index of refraction. m~mw1r  
    TEDX: Tolerance on element decentering in x. JJ[.K*dO  
    TEDY: Tolerance on element decentering in y. E8j>Toz  
    TETX: Tolerance on element tilt in x (degrees). MX2 Zm  
    TETY: Tolerance on element tilt in y (degrees). oMk6ZzZ,>  
    GZ( W6 4  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. |{]W (/  
    A J<Sa=  
    WARNING: Boundary constraints on compensators will be ignored. `Nmw  
    6OuB}*  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 'F.Da#st!}  
    Mode                : Sensitivities o<Hk/e~  
    Sampling            : 2 {3cT\u  
    Nominal Criterion   : 0.54403234 YMx]i,u'+  
    Test Wavelength     : 0.6328 ~{lSc/SP|  
    KfD=3h=  
    &g%9$*gmT  
    Fields: XY Symmetric Angle in degrees PLlad\  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY },zP,y:cH  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 |X@ZM  
    _3v6c  
    Sensitivity Analysis: Wv!#B$J~U  
    a~jU~('4}w  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ;G_{$)P.o  
    Type                      Value      Criterion        Change          Value      Criterion        Change I(!i"b9  
    Fringe tolerance on surface 1 ErmlM#u  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ?T]3I.3 2^  
    Change in Focus                :      -0.000000                            0.000000 a hQdBoj  
    Fringe tolerance on surface 2 vJTdZ p  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 LCKCg[D  
    Change in Focus                :       0.000000                            0.000000 }n/6.%  
    Fringe tolerance on surface 3 oZm)@Vv;  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 m X2i^.zH  
    Change in Focus                :      -0.000000                            0.000000 /Ilve U`E  
    Thickness tolerance on surface 1 b?S,%  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 fg"]4&`j-  
    Change in Focus                :       0.000000                            0.000000 t+7|/GLs2  
    Thickness tolerance on surface 2 Yl}'hRp  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ((OQs.  
    Change in Focus                :       0.000000                           -0.000000 ZYf0FC=-  
    Decenter X tolerance on surfaces 1 through 3 zpi Q;P  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 x~3N})T5  
    Change in Focus                :       0.000000                            0.000000 R|4a9G  
    Decenter Y tolerance on surfaces 1 through 3 v__n>*x  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 REqQJ7a/  
    Change in Focus                :       0.000000                            0.000000 #_oN.1u57  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ZbBz@1O  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "&!7wH ,A  
    Change in Focus                :       0.000000                            0.000000 jUnS&1]MF  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) }.`no  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 UYOveQ;  
    Change in Focus                :       0.000000                            0.000000 rBY)rUDd4  
    Decenter X tolerance on surface 1 |AD" }8  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <K6gzi0fl  
    Change in Focus                :       0.000000                            0.000000 i{T mn  
    Decenter Y tolerance on surface 1 w4I&SLm-b  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671  \_GG6  
    Change in Focus                :       0.000000                            0.000000 EL/~c*a/  
    Tilt X tolerance on surface (degrees) 1 ?xkw~3Yfi  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 2H\ }N^;f  
    Change in Focus                :       0.000000                            0.000000 @-B)a Z  
    Tilt Y tolerance on surface (degrees) 1 o;w 5;TkY  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 6b!F7ky g  
    Change in Focus                :       0.000000                            0.000000 8s+9PE  
    Decenter X tolerance on surface 2 ,hO*W-a% 1  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ^~dBO %M^  
    Change in Focus                :       0.000000                            0.000000 F"|OcKAA}h  
    Decenter Y tolerance on surface 2 b({K6#?'[  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ohLM9mc9  
    Change in Focus                :       0.000000                            0.000000 ?LxBH -o(  
    Tilt X tolerance on surface (degrees) 2 /2s=;tA1  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 c\P,ct }>  
    Change in Focus                :       0.000000                            0.000000 ZwzN=03T  
    Tilt Y tolerance on surface (degrees) 2 ICvl;Q  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 3rdrNc  
    Change in Focus                :       0.000000                            0.000000 \ t=ls  
    Decenter X tolerance on surface 3 `#g62wb,HY  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 'sII/sq`(  
    Change in Focus                :       0.000000                            0.000000 o54/r#~fi  
    Decenter Y tolerance on surface 3 H^TU?vz} <  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 W%&gvZre.  
    Change in Focus                :       0.000000                            0.000000 p+.xye U(  
    Tilt X tolerance on surface (degrees) 3 r(qw zUI  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Qq7%{`< }  
    Change in Focus                :       0.000000                            0.000000 ;#)vw;XR  
    Tilt Y tolerance on surface (degrees) 3 )I{~Pcq  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 #B$r|rqamq  
    Change in Focus                :       0.000000                            0.000000 V7S[rI<<r  
    Irregularity of surface 1 in fringes 2h;#BJ))  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Hoj'zY  
    Change in Focus                :       0.000000                            0.000000 w %2|Po5  
    Irregularity of surface 2 in fringes )/:j$aq  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 L>3-z>u,  
    Change in Focus                :       0.000000                            0.000000 ~DL-@*&  
    Irregularity of surface 3 in fringes :q>uj5%  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 m=K46i+NE  
    Change in Focus                :       0.000000                            0.000000 D!g \-y  
    Index tolerance on surface 1 Jx+e_k$gHO  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 |a|##/  
    Change in Focus                :       0.000000                            0.000000 ;5dA  
    Index tolerance on surface 2 }+/F?_I= %  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 -J& b~t@  
    Change in Focus                :       0.000000                           -0.000000 7*MjQzg-P  
    eaWK2%v  
    Worst offenders: 'pa8h L  
    Type                      Value      Criterion        Change SHA6;y+U/~  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 'Szk!,_  
    TSTY   2             0.20000000     0.35349910    -0.19053324 oC  }  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 -)pVgf  
    TSTX   2             0.20000000     0.35349910    -0.19053324 KvvG H-]  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 }C'h<%[P  
    TSTY   1             0.20000000     0.42678383    -0.11724851 O<\h_   
    TSTX   1            -0.20000000     0.42678383    -0.11724851 RD_l  
    TSTX   1             0.20000000     0.42678383    -0.11724851 cx_$`H  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 gw^X-  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Z,QSbw@,7  
    CBu$8]9=  
    Estimated Performance Changes based upon Root-Sum-Square method: CubBD+h l*  
    Nominal MTF                 :     0.54403234 .a_xQ]eQ  
    Estimated change            :    -0.36299231 #I-qL/Lm  
    Estimated MTF               :     0.18104003 6DxT(VU}  
    I AFj_VWC0  
    Compensator Statistics: +01bjM6F_1  
    Change in back focus: 5uAUi=XA>S  
    Minimum            :        -0.000000 W5U;{5  
    Maximum            :         0.000000 )J(@e4;Rv  
    Mean               :        -0.000000 #W2#'J:l  
    Standard Deviation :         0.000000 E/Adi^  
    a IgV"3  
    Monte Carlo Analysis: ,9"A"p*R  
    Number of trials: 20 xN>+!&3%w  
    cHw-;  
    Initial Statistics: Normal Distribution JPmZ%]wA  
    T,uVt^.R+  
      Trial       Criterion        Change Wg[ThaZ  
          1     0.42804416    -0.11598818 Bc1MKE5  
    Change in Focus                :      -0.400171 'Im&&uSkr  
          2     0.54384387    -0.00018847 HI!bq%TZ4  
    Change in Focus                :       1.018470 lj+}5ySG/  
          3     0.44510003    -0.09893230 G&\!!i|IQ  
    Change in Focus                :      -0.601922 fK1^fzV  
          4     0.18154684    -0.36248550 tKLAA+Z  
    Change in Focus                :       0.920681 2`cVi"U  
          5     0.28665820    -0.25737414 Y6ORI  
    Change in Focus                :       1.253875 z\6/?5D#v  
          6     0.21263372    -0.33139862 K/D,sH!  
    Change in Focus                :      -0.903878 Y^ ti;:  
          7     0.40051424    -0.14351809 _/RP3"#  
    Change in Focus                :      -1.354815 q,fk@GI'2  
          8     0.48754161    -0.05649072 :qxd s>Xm  
    Change in Focus                :       0.215922 kOLS<>.  
          9     0.40357468    -0.14045766 Yvxp(  
    Change in Focus                :       0.281783 ghVxcK  
         10     0.26315315    -0.28087919 2\L}Ka|v  
    Change in Focus                :      -1.048393 V1>>]]PS  
         11     0.26120585    -0.28282649  j.vBld  
    Change in Focus                :       1.017611 xyaU!E*  
         12     0.24033815    -0.30369419 }c;h:CE#  
    Change in Focus                :      -0.109292 *+>R^\uT  
         13     0.37164046    -0.17239188 ]qNPOnlp  
    Change in Focus                :      -0.692430 JrVBd hLr  
         14     0.48597489    -0.05805744 >a5avSn  
    Change in Focus                :      -0.662040 c69M   
         15     0.21462327    -0.32940907  i'NN  
    Change in Focus                :       1.611296 cwKOE?!  
         16     0.43378226    -0.11025008 %{K6   
    Change in Focus                :      -0.640081 G[[NDK  
         17     0.39321881    -0.15081353 dD}!E  
    Change in Focus                :       0.914906 t.tdY  
         18     0.20692530    -0.33710703 }dSxrT  
    Change in Focus                :       0.801607 sow/JLlbC  
         19     0.51374068    -0.03029165 i4*!t.eI  
    Change in Focus                :       0.947293 >6cENe_@t  
         20     0.38013374    -0.16389860 y1zep\-D  
    Change in Focus                :       0.667010 K#],4OG  
    26\*x  
    Number of traceable Monte Carlo files generated: 20 -"Q[n,"Y  
    D:Y `{{  
    Nominal     0.54403234 | QI-gw  
    Best        0.54384387    Trial     2  !B\[Q$  
    Worst       0.18154684    Trial     4 )#n>))   
    Mean        0.35770970 %D:5 S?{  
    Std Dev     0.11156454 R WU,v{I9  
    _ Oe|ZQ  
    -!p -nk@9|  
    Compensator Statistics: 3kBpH7h4  
    Change in back focus: 3` aJ"qQE  
    Minimum            :        -1.354815 JI}p{ yI  
    Maximum            :         1.611296 Y)X58_En  
    Mean               :         0.161872 #O .-/&Z  
    Standard Deviation :         0.869664 &Jw4^ob  
    M B,P#7|  
    90% >       0.20977951               hrr;=q$  
    80% >       0.22748071               ,w/f :-y  
    50% >       0.38667627               6uH1dsD  
    20% >       0.46553746               4$+9k;m'  
    10% >       0.50064115                WsCzC_'j.  
    y|+ltAK  
    End of Run. @9rmm)TZ  
    N#`aVW'{v2  
    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 'D4KaM.d  
    fJ3qL# '  
    uPpRzp  
    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 y'k4>,`9e  
    I({ 7a i  
    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                 /d >fp  
    80% >       0.22748071                 $XI5fa4Tt  
    50% >       0.38667627                 \Rp)n=|  
    20% >       0.46553746                 yg2~qa:dZ  
    10% >       0.50064115 @ec QVk  
    xL>0&R  
    最后这个数值是MTF值呢，还是MTF的公差？ @/JGC%!  
    {F k]X#j  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   \+MR`\|3  
    \FTv N  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : f8&=D4)-w  
    90% >       0.20977951                 @W @L%<  
    80% >       0.22748071                 W;-Qze\D  
    50% >       0.38667627                 }dXL= ul  
    20% >       0.46553746                 )nJ>kbO~8  
    10% >       0.50064115 0Hz3nd?v  
    ....... -%N (X8  
    Qp=uiXs  
    Zka;}UL&Q  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Qxvz}r.l]  
    Mode                : Sensitivities |-|BM'Y  
    Sampling            : 2 l1:j/[B=  
    Nominal Criterion   : 0.54403234 82=][9d #  
    Test Wavelength     : 0.6328 -12v/an]L7  
    aH$~':[93  
    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？ D[r  
    +?<jSmGW  
    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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