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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 X~T"n<:a>  
    |Qo;=~7  
    Kzfa4C  
    d:|X|0#\uH  
    然后添加了默认公差分析，基本没变 !Y8us"   
    T&   
    : 2Ho  
    GNlP]9wX  
    然后运行分析的结果如下： %qfql  
     K!VIY|U  
    Analysis of Tolerances : " 9F.U  
    .^6"nnfA#  
    File : E:\光学设计资料\zemax练习\f500.ZMX ]cdKd)  
    Title: VImcW;Xa  
    Date : TUE JUN 21 2011 t9685s  
    Pwn"!pk  
    Units are Millimeters. 7@NAky(  
    All changes are computed using linear differences. gNY}`'~hr  
    wws)**]J8  
    Paraxial Focus compensation only. M.iR5Uh  
    RcIGIt  
    WARNING: Solves should be removed prior to tolerancing. d h#4/Wa,  
    l8/ tR  
    Mnemonics: {{7%z4l  
    TFRN: Tolerance on curvature in fringes. [#S}L(  
    TTHI: Tolerance on thickness. /ldE (!^n  
    TSDX: Tolerance on surface decentering in x. 0wU8PZ Nj  
    TSDY: Tolerance on surface decentering in y. +YVnA?r?  
    TSTX: Tolerance on surface tilt in x (degrees).  ^AS*X2y  
    TSTY: Tolerance on surface tilt in y (degrees). ^R',P(@oL  
    TIRR: Tolerance on irregularity (fringes). {%.FIw k  
    TIND: Tolerance on Nd index of refraction. =(Y 1y$  
    TEDX: Tolerance on element decentering in x. gs wp:82e2  
    TEDY: Tolerance on element decentering in y. !*_5 B'  
    TETX: Tolerance on element tilt in x (degrees). >bWx!M]  
    TETY: Tolerance on element tilt in y (degrees). qPY OO  
    +`O8cHx  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. pCS2sq8RC  
    He^u+N@B  
    WARNING: Boundary constraints on compensators will be ignored. UE33e(Q<  
    b0|q@!z>  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm uKHkC.g  
    Mode                : Sensitivities o_>id^$>B  
    Sampling            : 2 >Ng7q?h   
    Nominal Criterion   : 0.54403234 -h+=^,  
    Test Wavelength     : 0.6328 WlVp|s{TYP  
    \' (_r  
    (jv!q@@2C.  
    Fields: XY Symmetric Angle in degrees 9t:P1  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY GInU7y904  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ~= qJSb  
    G?e"A0,  
    Sensitivity Analysis: 8q*MhH>6I  
    d:jD  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| SZW+<X  
    Type                      Value      Criterion        Change          Value      Criterion        Change C,T9xm  
    Fringe tolerance on surface 1 {a -bew  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 &(a#I]`9M  
    Change in Focus                :      -0.000000                            0.000000 Rd7[e^HSN  
    Fringe tolerance on surface 2 O]rAo  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 6) {jHnk)  
    Change in Focus                :       0.000000                            0.000000 cz<8Kb/XV  
    Fringe tolerance on surface 3 +NL^/y<;  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 <\uz",e}  
    Change in Focus                :      -0.000000                            0.000000 }? j>V  
    Thickness tolerance on surface 1 8Yfg@"Tn  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 U%oh ?g  
    Change in Focus                :       0.000000                            0.000000 FRa@T N/Ic  
    Thickness tolerance on surface 2 k{_ Op/k}V  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Z'sAu#C  
    Change in Focus                :       0.000000                           -0.000000 J!r,ktO^U?  
    Decenter X tolerance on surfaces 1 through 3 P{2V@ <}  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Z^?1MJ:`  
    Change in Focus                :       0.000000                            0.000000 `;Qw/xl_N  
    Decenter Y tolerance on surfaces 1 through 3 |tL57Wu93  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 X :2%U  
    Change in Focus                :       0.000000                            0.000000 +76{S_CZ  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 242dT/j  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 n^<3E; a  
    Change in Focus                :       0.000000                            0.000000 x;A"S  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) E+wd9/;  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 3exv k  
    Change in Focus                :       0.000000                            0.000000 +oKp>-  
    Decenter X tolerance on surface 1 1n}q6oa=  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 aRFLh  
    Change in Focus                :       0.000000                            0.000000 UUb n7&  
    Decenter Y tolerance on surface 1 |X&.+RI  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 VA4>!t)  
    Change in Focus                :       0.000000                            0.000000 m# #( uSh  
    Tilt X tolerance on surface (degrees) 1 x:'M\c7  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 /7WN,a  
    Change in Focus                :       0.000000                            0.000000 s|iph~W!L  
    Tilt Y tolerance on surface (degrees) 1 V=yRE  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 JNhHQvi\  
    Change in Focus                :       0.000000                            0.000000 6{h+(|.(  
    Decenter X tolerance on surface 2 +Kc1a;  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Wn;B~  
    Change in Focus                :       0.000000                            0.000000 c2M-/ x-:  
    Decenter Y tolerance on surface 2 {v&c5B~,\  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 @\-i3EhR  
    Change in Focus                :       0.000000                            0.000000 zh5'oE&[yC  
    Tilt X tolerance on surface (degrees) 2 l5sBDiir%  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ]3.Un,F  
    Change in Focus                :       0.000000                            0.000000 RQ?T~ASs  
    Tilt Y tolerance on surface (degrees) 2 OO%< ~H  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 IT,d(UV_  
    Change in Focus                :       0.000000                            0.000000 I5RV:e5b  
    Decenter X tolerance on surface 3 :1%z;  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $*)??uU  
    Change in Focus                :       0.000000                            0.000000 vfID@g`!q+  
    Decenter Y tolerance on surface 3 !eb} jL  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $HjKELoJ<  
    Change in Focus                :       0.000000                            0.000000 M%=V vE.I  
    Tilt X tolerance on surface (degrees) 3 !3~VoNh,  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 emZ^d/A  
    Change in Focus                :       0.000000                            0.000000 >dH5n$Gb  
    Tilt Y tolerance on surface (degrees) 3 piIr .]  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 @8zp(1.  
    Change in Focus                :       0.000000                            0.000000 .Z=4,m>  
    Irregularity of surface 1 in fringes Fy4jujP<  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 GKPC9;{W  
    Change in Focus                :       0.000000                            0.000000 x+~IXi>Ig  
    Irregularity of surface 2 in fringes ]W,K}~!   
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 /<Nb/#8  
    Change in Focus                :       0.000000                            0.000000 **\BP,]}  
    Irregularity of surface 3 in fringes m9*Lo[EXO  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 oZvQ/|:p!  
    Change in Focus                :       0.000000                            0.000000 6;/>asf  
    Index tolerance on surface 1 (s?`*i:2  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ]7WBoC8  
    Change in Focus                :       0.000000                            0.000000 z`gdE0@;d3  
    Index tolerance on surface 2 1VW;[ ocQ  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 `Pj7O/!)#!  
    Change in Focus                :       0.000000                           -0.000000 S312h'K j  
    4m++>q  
    Worst offenders: m35Blg34  
    Type                      Value      Criterion        Change |xI\)V E^  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Ks&~VU  
    TSTY   2             0.20000000     0.35349910    -0.19053324 \ iL&Aq}BO  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 K GlO;Q~7  
    TSTX   2             0.20000000     0.35349910    -0.19053324 OHnHSb'?\  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 0x'-\)v>3  
    TSTY   1             0.20000000     0.42678383    -0.11724851 _E5%Px5>L  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 4-q7o]%5<  
    TSTX   1             0.20000000     0.42678383    -0.11724851 s:Us*i=H,  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 eqbxf#H!  
    TSTY   3             0.20000000     0.42861670    -0.11541563 rl)(4ad=  
    DQg:W |A  
    Estimated Performance Changes based upon Root-Sum-Square method: \GtZX!0  
    Nominal MTF                 :     0.54403234 E-,74B&H  
    Estimated change            :    -0.36299231 p},6W,f  
    Estimated MTF               :     0.18104003 -&Fxg>FrYb  
    }G&#pw2  
    Compensator Statistics: )>LQ{ X.  
    Change in back focus: ? WWnt^  
    Minimum            :        -0.000000 ?{#P.2  
    Maximum            :         0.000000 sg 12C  
    Mean               :        -0.000000 i |>K  
    Standard Deviation :         0.000000 W38My j!  
    ~p~8T  
    Monte Carlo Analysis: u(JC 4w'  
    Number of trials: 20 VVuL+i  
    k/nOz*  
    Initial Statistics: Normal Distribution [|UW_Bz  
    `gqBJi  
      Trial       Criterion        Change E0=-6j  
          1     0.42804416    -0.11598818 puS'9Lpp  
    Change in Focus                :      -0.400171 <\x/Y$jm0n  
          2     0.54384387    -0.00018847 R!xs;|]  
    Change in Focus                :       1.018470 b:7;zOtF  
          3     0.44510003    -0.09893230 JJ56d)37.  
    Change in Focus                :      -0.601922 BQf}S +  
          4     0.18154684    -0.36248550 Kp"mV=RG2T  
    Change in Focus                :       0.920681 wgSA6mQZ  
          5     0.28665820    -0.25737414 pTZPOv#?Q  
    Change in Focus                :       1.253875  ,[ +  
          6     0.21263372    -0.33139862 VL"ZC:n)-  
    Change in Focus                :      -0.903878 !m pRLBH  
          7     0.40051424    -0.14351809 wP1dPl_j:0  
    Change in Focus                :      -1.354815 9QJ=?bIC#  
          8     0.48754161    -0.05649072 %iIryv;  
    Change in Focus                :       0.215922 </<_e0  
          9     0.40357468    -0.14045766 zsI0Q47\  
    Change in Focus                :       0.281783 I"3Qdi  
         10     0.26315315    -0.28087919 7"=  
    Change in Focus                :      -1.048393 BZ1@?3  
         11     0.26120585    -0.28282649 xk86?2b{)  
    Change in Focus                :       1.017611 IDzP<u8v  
         12     0.24033815    -0.30369419 !.L%kw7z  
    Change in Focus                :      -0.109292 D`e!CprF  
         13     0.37164046    -0.17239188 r4NI(\gU  
    Change in Focus                :      -0.692430 ;: Hfkyy]  
         14     0.48597489    -0.05805744 D>c%5h  
    Change in Focus                :      -0.662040 5@j?7%_8  
         15     0.21462327    -0.32940907 =,-80WNsX  
    Change in Focus                :       1.611296 iUA2/ A  
         16     0.43378226    -0.11025008 jL 8&  
    Change in Focus                :      -0.640081 UuT>qWxQ8  
         17     0.39321881    -0.15081353 4cJ^L <  
    Change in Focus                :       0.914906 -O~WHi5}  
         18     0.20692530    -0.33710703 2DTH|Yv  
    Change in Focus                :       0.801607 m*P~X*St  
         19     0.51374068    -0.03029165  ^]wm Y  
    Change in Focus                :       0.947293 -+|0LXo  
         20     0.38013374    -0.16389860 $a\q<fN}  
    Change in Focus                :       0.667010  A`#v-  
    S7wZCQe  
    Number of traceable Monte Carlo files generated: 20 UOF5&>MLb  
    8[f]9P/i  
    Nominal     0.54403234 30FYq?  
    Best        0.54384387    Trial     2 e@k ti@ZJ  
    Worst       0.18154684    Trial     4 ezwcOYMXK  
    Mean        0.35770970 [ $.oyjd  
    Std Dev     0.11156454 ~,R_  
    z^~uq:  
    {>QrI4*A  
    Compensator Statistics: lqqY5l6j  
    Change in back focus: QEUg=*3W=  
    Minimum            :        -1.354815 JS&l h  
    Maximum            :         1.611296 U@D=.6\B  
    Mean               :         0.161872 3z&,>CEX  
    Standard Deviation :         0.869664 p`{<q -  
    0plRsZ}  
    90% >       0.20977951               \C}tK,79  
    80% >       0.22748071               Jd1eOeS  
    50% >       0.38667627               JEY%(UR8  
    20% >       0.46553746               sdS<-! %u4  
    10% >       0.50064115                z(1h^.  
    QHMXQyr(  
    End of Run. plfz)x3  
    , X$S4>  
    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 _PNU*E%s<  
    zCO5 `%14  
    w'M0Rd]  
    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 c)@M7UK[  
    jE2ziK  
    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                 CUxSmN2[  
    80% >       0.22748071                 n4Q!lJ  
    50% >       0.38667627                 |_O; U=2  
    20% >       0.46553746                 BIcE3}dS8  
    10% >       0.50064115 ,dh*GJ{5  
    {'d?vm!r  
    最后这个数值是MTF值呢，还是MTF的公差？ P\N`E?lJL  
    2d$hgR#v  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   I[[rVts  
    lfj>]om$  
    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  : M(/%w"R  
    90% >       0.20977951                 S!g&&RDx  
    80% >       0.22748071                 6=  9  
    50% >       0.38667627                 E[_Z%zd^  
    20% >       0.46553746                 _G'.VSGH  
    10% >       0.50064115 v3@)q0@  
    ....... ]bS\*q0Zf(  
    u2U@Qrs2  
    B`KpaE]  
    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   (T`x-wTl  
    Mode                : Sensitivities wV(_=LF  
    Sampling            : 2 6o6m"6  
    Nominal Criterion   : 0.54403234 9N u;0  
    Test Wavelength     : 0.6328 $x`U)pv  
    &os* @0h4  
    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？ /j.V0%  
    vbA9 V<c&  
    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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