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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 W0y '5`  
    VLS0XKI)  
    sc|_Q/`\.  
    ?HTj mIb  
    然后添加了默认公差分析，基本没变 ~"!] 3C,L  
    RS"H8P 4W  
    `NnUyQ;T  
    TkE 8D n  
    然后运行分析的结果如下： C+?Hm1  
    us ;YV<)d  
    Analysis of Tolerances 9:fOYT$8  
    yW+yg{Gg:  
    File : E:\光学设计资料\zemax练习\f500.ZMX K\>tA)IPSV  
    Title: N/]o4o  
    Date : TUE JUN 21 2011 q`|LRz&al  
    *YW/_  
    Units are Millimeters. m$`RcwO  
    All changes are computed using linear differences. Jpj}@,  
    YCdS!&^UN  
    Paraxial Focus compensation only. _]04lGx27  
    /|r^W\DV&x  
    WARNING: Solves should be removed prior to tolerancing. BS /G("oZ[  
    \qR7mI/*  
    Mnemonics: z3`-plE  
    TFRN: Tolerance on curvature in fringes. w3#Wh|LQ-  
    TTHI: Tolerance on thickness. ]p*l%(dhY  
    TSDX: Tolerance on surface decentering in x. +~'865{  
    TSDY: Tolerance on surface decentering in y. cmBB[pk\  
    TSTX: Tolerance on surface tilt in x (degrees). wi hH?~]  
    TSTY: Tolerance on surface tilt in y (degrees). ~Cl){8o  
    TIRR: Tolerance on irregularity (fringes). `k OD[*  
    TIND: Tolerance on Nd index of refraction. zw+B9PYqX  
    TEDX: Tolerance on element decentering in x. H70LhN  
    TEDY: Tolerance on element decentering in y. rE i Ki  
    TETX: Tolerance on element tilt in x (degrees). #?5 (o  
    TETY: Tolerance on element tilt in y (degrees). WF2}-NU"  
    <!L>Exh&r  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. wDcj,:h`  
    s<*XN NE7  
    WARNING: Boundary constraints on compensators will be ignored. / rg*p  
    |w_7_J2  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm =2[7 E  
    Mode                : Sensitivities GRGzP&}@  
    Sampling            : 2 z|=}1; (.  
    Nominal Criterion   : 0.54403234 JQ}$Aqk  
    Test Wavelength     : 0.6328 W^fuScG)c  
    E8>Ru i@9  
    h lkn%  
    Fields: XY Symmetric Angle in degrees .nG#co"r}3  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY q+P|l5_ t  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 T~QWRBO  
     =Qh\D  
    Sensitivity Analysis: Fp@TCPe#  
    &L#UGp $,  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| +cIUGF p}  
    Type                      Value      Criterion        Change          Value      Criterion        Change NZ ;{t\  
    Fringe tolerance on surface 1 Fkvl%n  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ^m?KRm2  
    Change in Focus                :      -0.000000                            0.000000 xm%Um\Pb7  
    Fringe tolerance on surface 2 ZPiq-q  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 _8"O$w  
    Change in Focus                :       0.000000                            0.000000 eK.e| z|  
    Fringe tolerance on surface 3 }Mo=PWI1?  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 7.C;NT  
    Change in Focus                :      -0.000000                            0.000000 3mYiQ2  
    Thickness tolerance on surface 1 9l}FU$  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 $"0MU  
    Change in Focus                :       0.000000                            0.000000 $tz;<M7B  
    Thickness tolerance on surface 2 WtViW=j'  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 j*F`"df  
    Change in Focus                :       0.000000                           -0.000000 XD|E=s  
    Decenter X tolerance on surfaces 1 through 3 XS`M-{f`  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #Xhdn\7  
    Change in Focus                :       0.000000                            0.000000 rrQQZ5fhb  
    Decenter Y tolerance on surfaces 1 through 3 , FhekaA  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 !lEY=1nHOJ  
    Change in Focus                :       0.000000                            0.000000 ()K " c#  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 7nHF@Y|*"  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 [!}:KD2yX  
    Change in Focus                :       0.000000                            0.000000 Yiry["[]Q  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) m<{< s T  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 r)Ap8?+  
    Change in Focus                :       0.000000                            0.000000 an4GSL  
    Decenter X tolerance on surface 1 F_Y7@Ei/  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 t=_J9|  
    Change in Focus                :       0.000000                            0.000000 7h6,c/<  
    Decenter Y tolerance on surface 1 BDVHol*g  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 M7+nW ; e%  
    Change in Focus                :       0.000000                            0.000000 `VKf3&|<A  
    Tilt X tolerance on surface (degrees) 1 ?47@ o1  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 >y.%xK  
    Change in Focus                :       0.000000                            0.000000 &07]LF$]  
    Tilt Y tolerance on surface (degrees) 1 0GB:GBhZ  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Xv< B1  
    Change in Focus                :       0.000000                            0.000000 GytXFL3`:  
    Decenter X tolerance on surface 2 -:30:oq  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 43={Xy   
    Change in Focus                :       0.000000                            0.000000 F;=4vS]\  
    Decenter Y tolerance on surface 2 N-I5X2  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 'rMN=1:iu"  
    Change in Focus                :       0.000000                            0.000000 /I)yU>o  
    Tilt X tolerance on surface (degrees) 2 )t$,e2FY  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 '|S%a MLZ)  
    Change in Focus                :       0.000000                            0.000000 [[>wB[w  
    Tilt Y tolerance on surface (degrees) 2 *H?!;u=8  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $-#Yl&?z9  
    Change in Focus                :       0.000000                            0.000000 U>V&-kxtV  
    Decenter X tolerance on surface 3 \2ZPj)&-E  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ?*?RP)V  
    Change in Focus                :       0.000000                            0.000000 sXi=70o  
    Decenter Y tolerance on surface 3 )Psb>'X  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 F;gx%[$GX  
    Change in Focus                :       0.000000                            0.000000 eFpTW&9n  
    Tilt X tolerance on surface (degrees) 3 6&bY}i^K  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 .pfP7weQ  
    Change in Focus                :       0.000000                            0.000000 3l3+A+ n  
    Tilt Y tolerance on surface (degrees) 3 Z9575CI<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 X@k`3X  
    Change in Focus                :       0.000000                            0.000000 DA2}{  
    Irregularity of surface 1 in fringes .C2TQ:B,.  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 @O@GRq&V  
    Change in Focus                :       0.000000                            0.000000 3 n'V\H vz  
    Irregularity of surface 2 in fringes M7ers|&{  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 t5'V6nv  
    Change in Focus                :       0.000000                            0.000000  EI_  
    Irregularity of surface 3 in fringes deM7fN4lTi  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ?[)}l9  
    Change in Focus                :       0.000000                            0.000000 C8 vOE`U,J  
    Index tolerance on surface 1 ]UH`Pdlt  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 OCZ[D{i9@  
    Change in Focus                :       0.000000                            0.000000 $/=nU*pd  
    Index tolerance on surface 2 iCW*]U  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 %^1cyk  
    Change in Focus                :       0.000000                           -0.000000 O!Oumw,$  
    wk6NG/<  
    Worst offenders: 2RN)<\P  
    Type                      Value      Criterion        Change wjh=Q  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 >. '<J]  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Qu} W/j|3  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 abJ" [  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Y$Q|J4z  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 O~59FuL  
    TSTY   1             0.20000000     0.42678383    -0.11724851 br0++}vwL  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 U5-@2YcH  
    TSTX   1             0.20000000     0.42678383    -0.11724851  ?p(/_@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 lW(px^&IN  
    TSTY   3             0.20000000     0.42861670    -0.11541563 QHWBAGA  
    X=Ys<TM,  
    Estimated Performance Changes based upon Root-Sum-Square method: {_Lg tu  
    Nominal MTF                 :     0.54403234 wMdal:n^  
    Estimated change            :    -0.36299231 Wm);C~Le  
    Estimated MTF               :     0.18104003 -S$1Yn  
    c%[#~;E  
    Compensator Statistics: K]j0_~3s  
    Change in back focus: +V{7")px6  
    Minimum            :        -0.000000 /F4pb]U!*  
    Maximum            :         0.000000 _UT$,0u_i  
    Mean               :        -0.000000 !'j?.F $}  
    Standard Deviation :         0.000000 7<jZ`qdq_  
    x5QaM.+=J  
    Monte Carlo Analysis: .Wq@gV  
    Number of trials: 20 E@-KGsdhK  
    b8%C *r7  
    Initial Statistics: Normal Distribution IBQ@{QB  
    XuD=E  
      Trial       Criterion        Change \EKU*5\Hp>  
          1     0.42804416    -0.11598818 B9T!j]'  
    Change in Focus                :      -0.400171 ,oNOC3 U  
          2     0.54384387    -0.00018847 5w\fSY  
    Change in Focus                :       1.018470 ,SQZD,3v4  
          3     0.44510003    -0.09893230 !A>z(eIsv`  
    Change in Focus                :      -0.601922 <)\y#N  
          4     0.18154684    -0.36248550 =xsTDjH>  
    Change in Focus                :       0.920681 ZkIgL  
          5     0.28665820    -0.25737414 &f7fK|}  
    Change in Focus                :       1.253875 (u]N  
          6     0.21263372    -0.33139862 _=q! BW  
    Change in Focus                :      -0.903878 @^;j)%F}  
          7     0.40051424    -0.14351809 w|CZ7|6  
    Change in Focus                :      -1.354815 Qc[3Fq,f  
          8     0.48754161    -0.05649072 uP<0WCN  
    Change in Focus                :       0.215922 W`"uu.~f  
          9     0.40357468    -0.14045766 ?7 M.o  
    Change in Focus                :       0.281783 0<8XI>.3D  
         10     0.26315315    -0.28087919 r}0\}~'?c  
    Change in Focus                :      -1.048393 M[z)6 .  
         11     0.26120585    -0.28282649 nOQa_G]Gz  
    Change in Focus                :       1.017611 #-8\JEn  
         12     0.24033815    -0.30369419 ?6nF~9Z'  
    Change in Focus                :      -0.109292 T ]j.=|,d  
         13     0.37164046    -0.17239188 <5G{"U+ \  
    Change in Focus                :      -0.692430 Oky**B[D'  
         14     0.48597489    -0.05805744 ,jC3Fcly  
    Change in Focus                :      -0.662040 (YY~{W$w(  
         15     0.21462327    -0.32940907 0W3i()  
    Change in Focus                :       1.611296 i 9g>9  
         16     0.43378226    -0.11025008 RJy=pNztm  
    Change in Focus                :      -0.640081 8scc%t7  
         17     0.39321881    -0.15081353 'kYwz;gp  
    Change in Focus                :       0.914906 :5/Uh/sX  
         18     0.20692530    -0.33710703 Yk42(!  
    Change in Focus                :       0.801607 K_ lVISBQ  
         19     0.51374068    -0.03029165 I+ es8  
    Change in Focus                :       0.947293 (_4;') 9  
         20     0.38013374    -0.16389860 Dw7vv]+ S  
    Change in Focus                :       0.667010 ,v&L:a  
    hoT/KWD,  
    Number of traceable Monte Carlo files generated: 20 /t6X(*xoy  
    XX1Il;1G#  
    Nominal     0.54403234 peJKNX.!q  
    Best        0.54384387    Trial     2 XyMG.r-,  
    Worst       0.18154684    Trial     4 DI`%zLDcY  
    Mean        0.35770970 saU]`w_Z*  
    Std Dev     0.11156454 QZX~T|Ckv  
    tTN?r 8  
    GabYfUkO  
    Compensator Statistics: PyA&ZkX>  
    Change in back focus: 8?*RIA.a  
    Minimum            :        -1.354815 k8,?hX:  
    Maximum            :         1.611296 l88A=iLgv  
    Mean               :         0.161872 _/S?#   
    Standard Deviation :         0.869664 3+J0!FVla  
    AH4EtZC=W  
    90% >       0.20977951               *_ +7ni  
    80% >       0.22748071               x f4{r+  
    50% >       0.38667627               kAM1TWbaVQ  
    20% >       0.46553746               YUQtMf9  
    10% >       0.50064115                7O`o ovW$  
    >K# ,cxY  
    End of Run. htm{!Z]s0  
    !GW ,\y  
    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 >xA),^ YT  
    /U6% %%-D`  
    o$C| J]%  
    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 dr{y0`CCN  
    yAL1O94  
    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                 rOD1_X-  
    80% >       0.22748071                 Lc<eRVNd,  
    50% >       0.38667627                 E?PGu!&u  
    20% >       0.46553746                 JO@ Bf  
    10% >       0.50064115 nzX@:7g  
    Uz%Z&K  
    最后这个数值是MTF值呢，还是MTF的公差？ ? 8 1X  
    lEPAP|~uw  
    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？？？   [O-sVYB  
    d~ng6pA  
    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  : X, fu!  
    90% >       0.20977951                 2P~)I)3V  
    80% >       0.22748071                 ?F$6;N6x  
    50% >       0.38667627                 9q4_j  
    20% >       0.46553746                 -$4kBYC l+  
    10% >       0.50064115 4L:>4X[T  
    ....... E'dX)J9e$/  
    V 7<eQ0;m  
    oh}^?p  
    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   .LE+/n  
    Mode                : Sensitivities ( tn< VK.  
    Sampling            : 2 X8 qIia  
    Nominal Criterion   : 0.54403234 Cd~LsdKE5  
    Test Wavelength     : 0.6328 h[U7!aM  
    #( uj$[o  
    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？ A'g,:8Ou  
    5faj;I{%JY  
    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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