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    [讨论]公差分析结果的疑问 [复制链接]

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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 CV=qcD  
    fwA8=o SZd  
    1MO-60  
    oR~d<^z(  
    然后添加了默认公差分析，基本没变 j[R.UB3J  
    co\Il]`R/  
    rp"5176  
    jTg~]PQ^  
    然后运行分析的结果如下： PW5)") z  
    =NY55t.  
    Analysis of Tolerances X=1o$:7  
    WvArppANo  
    File : E:\光学设计资料\zemax练习\f500.ZMX 'ZI8nMY  
    Title: ?B e}{Qqlg  
    Date : TUE JUN 21 2011 opm_|0  
    &b^~0Z  
    Units are Millimeters. (K8Ob3zN_  
    All changes are computed using linear differences. )=iv3nF?6N  
    ?ZGsh7<k  
    Paraxial Focus compensation only. {PxFG<^U  
    k]$oir  
    WARNING: Solves should be removed prior to tolerancing. (p12=EB<  
    :] U\{;q2  
    Mnemonics: 0,m]W)  
    TFRN: Tolerance on curvature in fringes. +'5I8FE-  
    TTHI: Tolerance on thickness. 8kdJtEW3  
    TSDX: Tolerance on surface decentering in x. vK+reXE  
    TSDY: Tolerance on surface decentering in y. EZjtZMnj  
    TSTX: Tolerance on surface tilt in x (degrees). Bf #cBI  
    TSTY: Tolerance on surface tilt in y (degrees). >w7KOVbN3  
    TIRR: Tolerance on irregularity (fringes). ZQfPDH=  
    TIND: Tolerance on Nd index of refraction. -L]-u6kC[  
    TEDX: Tolerance on element decentering in x. Mh~}RA"H  
    TEDY: Tolerance on element decentering in y. &V~l(1  
    TETX: Tolerance on element tilt in x (degrees). $Z;/Sh  
    TETY: Tolerance on element tilt in y (degrees). 2'-"&d+ O  
    w$9LcN  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Q0K$ZWM`7  
    IKP GqoM  
    WARNING: Boundary constraints on compensators will be ignored. \ B84  
    6MY<6t0a  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm v ;}s`P\"  
    Mode                : Sensitivities jMTM:~0N  
    Sampling            : 2 /; Bmh=  
    Nominal Criterion   : 0.54403234 J+E,UiZU  
    Test Wavelength     : 0.6328 O8bxd6xb  
    EV{Ys}3M  
    !YjxCx  
    Fields: XY Symmetric Angle in degrees 4L8hn4F  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY O HpV%8`  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 EI 35&7(  
    4RtAwB  
    Sensitivity Analysis: bz#]>RD  
    -c0ypz  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| hF0,{v  
    Type                      Value      Criterion        Change          Value      Criterion        Change fM"*;LN!N  
    Fringe tolerance on surface 1 77)WNL/ x  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 \298SH(!7  
    Change in Focus                :      -0.000000                            0.000000 /IRXk[  
    Fringe tolerance on surface 2 W!? h2[  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 NvJ5[W  
    Change in Focus                :       0.000000                            0.000000 \z0HHCn'"  
    Fringe tolerance on surface 3 S=mqxIo@m  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 |0=UZK7%O  
    Change in Focus                :      -0.000000                            0.000000 1\&j)3mC  
    Thickness tolerance on surface 1 m:?"|.]  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 kc^,V|Nbq6  
    Change in Focus                :       0.000000                            0.000000 3)W zX  
    Thickness tolerance on surface 2 z.SC^/\o|  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 "hf |7E_  
    Change in Focus                :       0.000000                           -0.000000 w(6n  
    Decenter X tolerance on surfaces 1 through 3 *|dr-e_j  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 %?PFe}  
    Change in Focus                :       0.000000                            0.000000 &R%'s1]o  
    Decenter Y tolerance on surfaces 1 through 3 I!S Eb  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ?PT> V,&  
    Change in Focus                :       0.000000                            0.000000 Mq Ai}z%  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 'q)g, 2B%  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ~.%HZzR6&  
    Change in Focus                :       0.000000                            0.000000 =otO@22Np  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ~pQN#C)CO>  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 be,Rj,-  
    Change in Focus                :       0.000000                            0.000000 @9B*V~ <  
    Decenter X tolerance on surface 1 ^E.L8  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;[Mvk6^'R  
    Change in Focus                :       0.000000                            0.000000 \uJRjw+  
    Decenter Y tolerance on surface 1 kJ_8|  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 T[bCY 6  
    Change in Focus                :       0.000000                            0.000000 9aJIq{`E  
    Tilt X tolerance on surface (degrees) 1 7pyzPc#_  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 3OZPy|".ax  
    Change in Focus                :       0.000000                            0.000000 !,m  
    Tilt Y tolerance on surface (degrees) 1 uX6yhaOp|  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 P"Al*{:J  
    Change in Focus                :       0.000000                            0.000000 (h3L=  
    Decenter X tolerance on surface 2 a]T:wUYG'  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 qcj {rG18  
    Change in Focus                :       0.000000                            0.000000 hF,|()E[  
    Decenter Y tolerance on surface 2 i3,IEN  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 2jFuF71  
    Change in Focus                :       0.000000                            0.000000 ?Afe }  
    Tilt X tolerance on surface (degrees) 2 -r={P _E6  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  yfZNL?2x  
    Change in Focus                :       0.000000                            0.000000 i41~-?Bc  
    Tilt Y tolerance on surface (degrees) 2 7 $e6H|j@  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 C!VhVOy>d  
    Change in Focus                :       0.000000                            0.000000 lT|Gkm<G  
    Decenter X tolerance on surface 3 c1yRy|  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 J-v1"7[2GC  
    Change in Focus                :       0.000000                            0.000000 )XN_|zCk  
    Decenter Y tolerance on surface 3 !ZYPz}&N_  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 =&bI-  
    Change in Focus                :       0.000000                            0.000000 S(zp_  
    Tilt X tolerance on surface (degrees) 3 }5;4'l8  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 6:ettdj  
    Change in Focus                :       0.000000                            0.000000 /4&gA5BS]  
    Tilt Y tolerance on surface (degrees) 3 -]Z7^  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 R~\R>\  
    Change in Focus                :       0.000000                            0.000000 [7Lr"  
    Irregularity of surface 1 in fringes QqA=QTZ}  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 (~GQncqa  
    Change in Focus                :       0.000000                            0.000000 uuC ["Z  
    Irregularity of surface 2 in fringes tVAi0`DV  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047  w4U,7%V  
    Change in Focus                :       0.000000                            0.000000 AW]\n;f  
    Irregularity of surface 3 in fringes zjpZ] $  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 3p0v  
    Change in Focus                :       0.000000                            0.000000 x b,XI/  
    Index tolerance on surface 1 yLnQ9BXB&  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 -s3`mc}*  
    Change in Focus                :       0.000000                            0.000000 }L\;W:0  
    Index tolerance on surface 2 {R}F4k  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 P.Z:`P)  
    Change in Focus                :       0.000000                           -0.000000 hNN>Pd~;  
    YOl$sgg}  
    Worst offenders: ?jmP] MM  
    Type                      Value      Criterion        Change 0q}i5%m7  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 xXe3E&  
    TSTY   2             0.20000000     0.35349910    -0.19053324 uX_H;,n  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 5Gz!Bf@!!  
    TSTX   2             0.20000000     0.35349910    -0.19053324 M/N8bIC! Q  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 v:t;Uk^Y  
    TSTY   1             0.20000000     0.42678383    -0.11724851 0*gvHVd/l  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 D:z'`v0j  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ^A$=6=CX  
    TSTY   3            -0.20000000     0.42861670    -0.11541563  {^N,=m\  
    TSTY   3             0.20000000     0.42861670    -0.11541563 YuK+ N  
    ?I}RX~Tgg  
    Estimated Performance Changes based upon Root-Sum-Square method: m2PUU/8B/  
    Nominal MTF                 :     0.54403234 >y3FU1w5d  
    Estimated change            :    -0.36299231 ${f<}  
    Estimated MTF               :     0.18104003 fAs b:P  
    S!(3-{nC  
    Compensator Statistics: TSB2]uH  
    Change in back focus: &jE\D^>ko  
    Minimum            :        -0.000000 ,!#Am13  
    Maximum            :         0.000000 'C]w3Rh'  
    Mean               :        -0.000000 B=|R?t (*  
    Standard Deviation :         0.000000 V]7/hN-Y}  
    O$*lPA[  
    Monte Carlo Analysis: qSY\a\.<  
    Number of trials: 20 D=e*rrL7a  
    2W,9HSu8  
    Initial Statistics: Normal Distribution giakEPl  
    _Mw3>GNl  
      Trial       Criterion        Change )w7vE\n3  
          1     0.42804416    -0.11598818 -xn-A f!v  
    Change in Focus                :      -0.400171 ;UQGi}?CD  
          2     0.54384387    -0.00018847 +_5*4>MC  
    Change in Focus                :       1.018470 lw@Yn>eza  
          3     0.44510003    -0.09893230 hA7=:LG  
    Change in Focus                :      -0.601922 ~KK} $iM  
          4     0.18154684    -0.36248550 x[0T$  
    Change in Focus                :       0.920681 1j?P$%p  
          5     0.28665820    -0.25737414 gIB3DuUo  
    Change in Focus                :       1.253875 %3z[;&*3O  
          6     0.21263372    -0.33139862 DbMVbgz<e  
    Change in Focus                :      -0.903878 z?byNd8  
          7     0.40051424    -0.14351809 JRl=j2z  
    Change in Focus                :      -1.354815 ]s\r3I]  
          8     0.48754161    -0.05649072 $$9H1)Ny  
    Change in Focus                :       0.215922 iLy^U*yK  
          9     0.40357468    -0.14045766 20c5U%  
    Change in Focus                :       0.281783 "qmSwdM  
         10     0.26315315    -0.28087919 +Mo4g2W  
    Change in Focus                :      -1.048393 lc,k-}n  
         11     0.26120585    -0.28282649 NI?O  
    Change in Focus                :       1.017611 MBWoPK  
         12     0.24033815    -0.30369419 TU|#Pz7n-Z  
    Change in Focus                :      -0.109292 S?688  
         13     0.37164046    -0.17239188 8eXe b|?J  
    Change in Focus                :      -0.692430 lC5zqyG  
         14     0.48597489    -0.05805744 Z(MZbzY7Hq  
    Change in Focus                :      -0.662040 R"cQyG4  
         15     0.21462327    -0.32940907 ufXWK3~\  
    Change in Focus                :       1.611296 6#z8 %k aX  
         16     0.43378226    -0.11025008 yYz{*hq  
    Change in Focus                :      -0.640081 g[} L ?  
         17     0.39321881    -0.15081353 GfONm6A  
    Change in Focus                :       0.914906 a 0SZw  
         18     0.20692530    -0.33710703 wd`p>  
    Change in Focus                :       0.801607 hK?GIbRZ  
         19     0.51374068    -0.03029165 <*5S7)]BP  
    Change in Focus                :       0.947293 [2@:jLth=  
         20     0.38013374    -0.16389860 "6U0 !.ro@  
    Change in Focus                :       0.667010 um9&f~M  
    Ej(BE@6>s  
    Number of traceable Monte Carlo files generated: 20 oCT,v0+4O  
    a6 Vfd&  
    Nominal     0.54403234 G&oD;NY@/  
    Best        0.54384387    Trial     2 7Z>vQf B  
    Worst       0.18154684    Trial     4 qiz(k:\o  
    Mean        0.35770970 B^2r4 9vC  
    Std Dev     0.11156454 bxa>:71  
    vHi%UaD-y  
    \(Ma>E4PNU  
    Compensator Statistics: mm>l:M TF  
    Change in back focus: 6u_i >z  
    Minimum            :        -1.354815 c7CYulm  
    Maximum            :         1.611296 OY1bFIE  
    Mean               :         0.161872 o*K7(yUL4  
    Standard Deviation :         0.869664 ?`+VWa[,e  
    .$\-{)  
    90% >       0.20977951               4)iP%%JH  
    80% >       0.22748071               Kw-<o!~  
    50% >       0.38667627               Bz'.7" ":0  
    20% >       0.46553746               c/$].VG0  
    10% >       0.50064115                a;[\nCK  
    Do4hg $:40  
    End of Run. ULK] ' Rn  
    |X@s {?  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 zY/Oh9`=v  
    i$kB6B#==  
    t?9J'.p  
    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 HS |Gz3~  
    `,4yGgD!4  
    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                 r.)n>  
    80% >       0.22748071                 ZC2aIJ  
    50% >       0.38667627                 t,LK92?  
    20% >       0.46553746                 qJF'KHyU{l  
    10% >       0.50064115 R:n|1]*f3X  
    ,R=!ts[qi  
    最后这个数值是MTF值呢，还是MTF的公差？ z:S:[X 0  
    iZk4KX  
    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？？？   >3&  
    x .@O]}UH  
    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  : W|;`R{<I%  
    90% >       0.20977951                 SANb g&$  
    80% >       0.22748071                 ;=%cA#}_0  
    50% >       0.38667627                 i< imE#  
    20% >       0.46553746                 UC`sq-n  
    10% >       0.50064115 B~Z61   
    ....... A$~H`W<yxB  
    mGwJ>'+d  
    = ?/6hB=7<  
    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   L`:V]p  
    Mode                : Sensitivities KKg\n^  
    Sampling            : 2 0aGauG[  
    Nominal Criterion   : 0.54403234 K)Ya%%6[U#  
    Test Wavelength     : 0.6328 Q[!?SSX%  
    cy8r}wD  
    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？ ]G! APE  
    bL:+(/:  
    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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