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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 F'55BY*!  
    Zk # C!]=  
    s=XqI@  
    ?nozB|*>ut  
    然后添加了默认公差分析，基本没变 A:?w1"7gT  
    "'c =(P  
    8 =3$U+  
    n(\VP!u5r  
    然后运行分析的结果如下： M,eq-MEK  
    jE$]Z(Ab  
    Analysis of Tolerances +B OuU#  
    {Yt i  
    File : E:\光学设计资料\zemax练习\f500.ZMX zh4m`}p  
    Title: M5B?`mTl  
    Date : TUE JUN 21 2011 T) cbpkH4  
    84-7!< 6i  
    Units are Millimeters. g@S?5S.Av  
    All changes are computed using linear differences. ?tYc2R9x6"  
    jhE3@c@pT  
    Paraxial Focus compensation only. ACH!Gw~  
    7/Mhz{o;W  
    WARNING: Solves should be removed prior to tolerancing. SG3qNM: g  
    M+\LH  
    Mnemonics: o(5 ( ]bJ  
    TFRN: Tolerance on curvature in fringes. #]Q.B\\  
    TTHI: Tolerance on thickness. g8;JpPw  
    TSDX: Tolerance on surface decentering in x. UyOoyyd.  
    TSDY: Tolerance on surface decentering in y. 6H!"oC&  
    TSTX: Tolerance on surface tilt in x (degrees). dRLvej,  
    TSTY: Tolerance on surface tilt in y (degrees). }!Xj{Eoc  
    TIRR: Tolerance on irregularity (fringes). yl~h `b4  
    TIND: Tolerance on Nd index of refraction. u}KEH@yv  
    TEDX: Tolerance on element decentering in x. LwIX&\Ub  
    TEDY: Tolerance on element decentering in y. 4Yl:1rz  
    TETX: Tolerance on element tilt in x (degrees). Edav }z  
    TETY: Tolerance on element tilt in y (degrees). .Ue1}'v*,  
    p"/B3  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ^1+&)6s7V  
    zI3Bb?4.  
    WARNING: Boundary constraints on compensators will be ignored. $.r:  
    Uzd\#edxJ  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm gR) )K)  
    Mode                : Sensitivities #k<j`0kiq  
    Sampling            : 2 L-(.v*  
    Nominal Criterion   : 0.54403234 "npLl]XM  
    Test Wavelength     : 0.6328 cXvq=Rb  
    @C6.~OiP  
    J;7O`5J  
    Fields: XY Symmetric Angle in degrees "# BI"  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY giz#(61j^  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 |0/~7l  
    khtSZ"8X  
    Sensitivity Analysis: Sj<WiQ%<  
    ] 'ybu&22  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| {QTnVS't 0  
    Type                      Value      Criterion        Change          Value      Criterion        Change '`Iuf\  
    Fringe tolerance on surface 1 o@KK/f  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 5m&Zq_Qe  
    Change in Focus                :      -0.000000                            0.000000 l>O~^41[  
    Fringe tolerance on surface 2 )R'~{;z }  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 B @8 ]!  
    Change in Focus                :       0.000000                            0.000000 rSvQarT  
    Fringe tolerance on surface 3 Th)Z?\8zk  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 \4OX]{  
    Change in Focus                :      -0.000000                            0.000000 pT`oC&  
    Thickness tolerance on surface 1 [<M~6]  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 7}e73  
    Change in Focus                :       0.000000                            0.000000 mxJ& IV  
    Thickness tolerance on surface 2 WD7IF+v  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 td#B$$[  
    Change in Focus                :       0.000000                           -0.000000 nuip  
    Decenter X tolerance on surfaces 1 through 3 /&#Gh?z  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Qs5^kddz=  
    Change in Focus                :       0.000000                            0.000000 B#T4m]E/  
    Decenter Y tolerance on surfaces 1 through 3 GF-\WD  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 CQx#Xp>=s  
    Change in Focus                :       0.000000                            0.000000 zg2}R4h  
    Tilt X tolerance on surfaces 1 through 3 (degrees) = j,Hxq  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ``Wf%~  
    Change in Focus                :       0.000000                            0.000000 af<R.  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Xo:!U=m/#  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ;L458fYs  
    Change in Focus                :       0.000000                            0.000000 Gd8FXk,.!  
    Decenter X tolerance on surface 1 >qBQfz:U>  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ?(4E le  
    Change in Focus                :       0.000000                            0.000000 9=J+5V^qD<  
    Decenter Y tolerance on surface 1 $R2iSu{kO  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 eZMDtB  
    Change in Focus                :       0.000000                            0.000000 1]i{b/ 4  
    Tilt X tolerance on surface (degrees) 1 V_T.#"C4=z  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 *|T]('xwC  
    Change in Focus                :       0.000000                            0.000000 Pu=,L#+FN  
    Tilt Y tolerance on surface (degrees) 1 L:ox$RU  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 0Y81B;/F  
    Change in Focus                :       0.000000                            0.000000 tJ NJ S  
    Decenter X tolerance on surface 2 )oRF/Xx`g  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 S}Q/CT?au  
    Change in Focus                :       0.000000                            0.000000 u._B7R&>  
    Decenter Y tolerance on surface 2  M[^  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 msyC."j0jU  
    Change in Focus                :       0.000000                            0.000000 W/3,vf1  
    Tilt X tolerance on surface (degrees) 2 ;|.^_Xs  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 (|EnRk-E  
    Change in Focus                :       0.000000                            0.000000 em+dQ15  
    Tilt Y tolerance on surface (degrees) 2 ?9E shw2  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 I0 78[3b  
    Change in Focus                :       0.000000                            0.000000 w@&4dau  
    Decenter X tolerance on surface 3 `5V=U9zdE  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 K\7\  
    Change in Focus                :       0.000000                            0.000000 avmuI^LLs  
    Decenter Y tolerance on surface 3 f.%mp$~T  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6fozc2h@x%  
    Change in Focus                :       0.000000                            0.000000 -_bnGY%,  
    Tilt X tolerance on surface (degrees) 3 7S_rN!E1i*  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 7<<-\7`  
    Change in Focus                :       0.000000                            0.000000 ETw7/S${  
    Tilt Y tolerance on surface (degrees) 3 p5C:MA~*  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 yM *-e m  
    Change in Focus                :       0.000000                            0.000000 aL9 yNj}2  
    Irregularity of surface 1 in fringes OD*\<Sc  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 X0\2qD  
    Change in Focus                :       0.000000                            0.000000 5/vfmDt3'G  
    Irregularity of surface 2 in fringes N%hV+># Z  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _(K)(&  
    Change in Focus                :       0.000000                            0.000000 b) k\?'j  
    Irregularity of surface 3 in fringes [z2XK4\e1T  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 g[Z$\A?ZbZ  
    Change in Focus                :       0.000000                            0.000000 p(jY2&g  
    Index tolerance on surface 1 "$->nC.  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 66P'87G  
    Change in Focus                :       0.000000                            0.000000 WF)(Q~op0U  
    Index tolerance on surface 2 0Jz5i4B  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 n9 LTrhLqp  
    Change in Focus                :       0.000000                           -0.000000 3@qy}Nm  
    0zQ^ 6@  
    Worst offenders: @H{QHi  
    Type                      Value      Criterion        Change O_zW/#  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 emhI1 *}  
    TSTY   2             0.20000000     0.35349910    -0.19053324 8T7ex(w  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 64)Fz}  
    TSTX   2             0.20000000     0.35349910    -0.19053324 {XHAQ9'  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 S(B$[)(  
    TSTY   1             0.20000000     0.42678383    -0.11724851 4pvT?s>68  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 y9K U&L2  
    TSTX   1             0.20000000     0.42678383    -0.11724851 k<.$7Pl3U  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 9O8na 'w  
    TSTY   3             0.20000000     0.42861670    -0.11541563 BHVC&F*>  
    Zj+S "`P  
    Estimated Performance Changes based upon Root-Sum-Square method: :y/1Jf'2f  
    Nominal MTF                 :     0.54403234 |WiE`&?xP  
    Estimated change            :    -0.36299231 DzfgPY_Py  
    Estimated MTF               :     0.18104003 pyvH [  
    WH>=*\  
    Compensator Statistics: BBV"nm_(/  
    Change in back focus:  ;Y6XX_  
    Minimum            :        -0.000000 jGg,)~)Y  
    Maximum            :         0.000000 ?Uq;>  
    Mean               :        -0.000000 : 3J0Q  
    Standard Deviation :         0.000000 *oby(D"p  
    !"v[\||1  
    Monte Carlo Analysis: 'n:|D7t  
    Number of trials: 20 S:bYeD4  
    !lVOZ %  
    Initial Statistics: Normal Distribution J0ys Z]  
    /C[Q?  
      Trial       Criterion        Change x7<2K(  
          1     0.42804416    -0.11598818  hTEwp.  
    Change in Focus                :      -0.400171 B(pxyv)  
          2     0.54384387    -0.00018847 Z<wJ!|f  
    Change in Focus                :       1.018470 i\zVP.c])*  
          3     0.44510003    -0.09893230 i;flK*HOZ9  
    Change in Focus                :      -0.601922 ww}4   
          4     0.18154684    -0.36248550 Q#Tg)5.\  
    Change in Focus                :       0.920681 lm;Dy*|<  
          5     0.28665820    -0.25737414 ]C;X/8'Jf5  
    Change in Focus                :       1.253875 Udi  
          6     0.21263372    -0.33139862 .+07 Ui]I!  
    Change in Focus                :      -0.903878 K2XRKoG  
          7     0.40051424    -0.14351809 NJNS8\4  
    Change in Focus                :      -1.354815 w)rd--9f  
          8     0.48754161    -0.05649072 <2n5|.:>  
    Change in Focus                :       0.215922 ^xyU *A}D  
          9     0.40357468    -0.14045766 W\c1QY$E  
    Change in Focus                :       0.281783 >1}@Q(n/}{  
         10     0.26315315    -0.28087919 +]3kcm7B  
    Change in Focus                :      -1.048393 r|_@S[hZg  
         11     0.26120585    -0.28282649 o=nF.y  
    Change in Focus                :       1.017611 ;u8a%h!  
         12     0.24033815    -0.30369419 e=cb%  
    Change in Focus                :      -0.109292 0h=}BCb+i  
         13     0.37164046    -0.17239188 r4isn^g  
    Change in Focus                :      -0.692430 }@y(-7t  
         14     0.48597489    -0.05805744 `SH14A*  
    Change in Focus                :      -0.662040 O"GuVC}B  
         15     0.21462327    -0.32940907 ^Q\Hy\  
    Change in Focus                :       1.611296 ` pYyr/  
         16     0.43378226    -0.11025008 }Q?a6(4  
    Change in Focus                :      -0.640081 kR+7JUq]  
         17     0.39321881    -0.15081353 QZm7 Q4  
    Change in Focus                :       0.914906 9Q.@RO$%C  
         18     0.20692530    -0.33710703 ;e"dxAUe!^  
    Change in Focus                :       0.801607 {>3J96  
         19     0.51374068    -0.03029165 AI^!?nJ%'  
    Change in Focus                :       0.947293 _UA|0a!-  
         20     0.38013374    -0.16389860 y;if+  
    Change in Focus                :       0.667010 ]#\De73K   
    Ei7Oi!1  
    Number of traceable Monte Carlo files generated: 20 q'Nafa&a)  
    kz*6%Cg*~  
    Nominal     0.54403234 r j.X"  
    Best        0.54384387    Trial     2  SDc8\ms  
    Worst       0.18154684    Trial     4 j"A<qI  
    Mean        0.35770970 3&!v"ms  
    Std Dev     0.11156454 k%TBpG:T  
    aXyFpGdb9  
    :4r{t?ytXw  
    Compensator Statistics: i5,yrPF  
    Change in back focus: Dv*d$  
    Minimum            :        -1.354815 Pav W@  
    Maximum            :         1.611296 B'e@RhU;  
    Mean               :         0.161872 | .gE9'"bv  
    Standard Deviation :         0.869664 -@tj0OHg  
    TILH[r&Jg  
    90% >       0.20977951               y9N6!M|'y  
    80% >       0.22748071               v:P=t2q  
    50% >       0.38667627               l>?f+70  
    20% >       0.46553746               ~dC.,"  
    10% >       0.50064115                1l'JoU.<  
    rb*0YCi  
    End of Run. %>y`VN D  
    zsLMROo3  
    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 )<f4F!?,A  
    5\EnD, y  
    *10qP?0H  
    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 ?iZM.$![  
    +c8t~2tuN  
    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                 M7T*J>i  
    80% >       0.22748071                 k<P`  
    50% >       0.38667627                 4x}U+1B  
    20% >       0.46553746                 d#XgO5eyO  
    10% >       0.50064115 Uf|uFGb  
    ]R>NmjAI  
    最后这个数值是MTF值呢，还是MTF的公差？ >tPf.xI|l  
    vQp'bRR  
    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？？？   :?j=MV  
    U?d  I  
    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  : _~;%zFX  
    90% >       0.20977951                 7@>/O)>(AS  
    80% >       0.22748071                 _"B.V(  
    50% >       0.38667627                 @L~erg>8=  
    20% >       0.46553746                 B7[d^Y60B  
    10% >       0.50064115 *|g[Mn  
    ....... a-E}3a  
    hXth\e\[{`  
    u%e~a]  
    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   ^_|kEvk0  
    Mode                : Sensitivities g?v(>#i  
    Sampling            : 2 F""9O6u  
    Nominal Criterion   : 0.54403234 C h>F11kC  
    Test Wavelength     : 0.6328 i,*m(C@F}  
    #O}}pF  
    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？ R>"Fc/{y  
    ZAgXz{!H(  
    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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