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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 *wd@YMOP  
    b)e';M  
    T0Kjnzs  
    !go$J]T  
    然后添加了默认公差分析，基本没变 8F;f&&L"y  
    Q~y) V  
    dHUcu@,  
    cj5; XK  
    然后运行分析的结果如下： \@K KX  
    !SxZN dv  
    Analysis of Tolerances eM1=r:jgE  
    F70_N($i  
    File : E:\光学设计资料\zemax练习\f500.ZMX _x&fK$Y)B  
    Title: t V:oBT*  
    Date : TUE JUN 21 2011 2l YA% n  
    H ({Y  
    Units are Millimeters. O7x'q<PFU  
    All changes are computed using linear differences. 7F;dLd'  
    itpljh  
    Paraxial Focus compensation only. ]5_6m;g  
    Z{".(?+}1  
    WARNING: Solves should be removed prior to tolerancing. $UX^$gG  
    1yg5d9  
    Mnemonics: 5e|2b] f$  
    TFRN: Tolerance on curvature in fringes. 9cO m$  
    TTHI: Tolerance on thickness. hHoc>S6^M  
    TSDX: Tolerance on surface decentering in x. ]%4rL S  
    TSDY: Tolerance on surface decentering in y. %dN',  
    TSTX: Tolerance on surface tilt in x (degrees). <8SRt-Cr  
    TSTY: Tolerance on surface tilt in y (degrees). nG+L'SmI  
    TIRR: Tolerance on irregularity (fringes). Onqd2'%<  
    TIND: Tolerance on Nd index of refraction. @ a$HJ:  
    TEDX: Tolerance on element decentering in x. ER)<Twj  
    TEDY: Tolerance on element decentering in y. .Y^UPxf@  
    TETX: Tolerance on element tilt in x (degrees). j0]|$p  
    TETY: Tolerance on element tilt in y (degrees). ^-|yF2>`  
    v)VhR2d3  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. UojHlTg#bT  
    -y+u0,=p.  
    WARNING: Boundary constraints on compensators will be ignored. i,h)  
    aV6l"A]  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm [:MpOl-KIz  
    Mode                : Sensitivities `"#0\Wh  
    Sampling            : 2 {;kH&Pp  
    Nominal Criterion   : 0.54403234 Y unY'xY  
    Test Wavelength     : 0.6328 !6 k{]v  
    {Yp;R  
    |}O9'fyU8  
    Fields: XY Symmetric Angle in degrees Hh<3k- *d  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY }_A#O|dxO  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000  Du*O|  
    jxt^d  
    Sensitivity Analysis: J6s55 v  
    qU/,&C  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 2Y2J)5,  
    Type                      Value      Criterion        Change          Value      Criterion        Change 'B$ bGQ  
    Fringe tolerance on surface 1 FQ72VY  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 |RdiM&C7  
    Change in Focus                :      -0.000000                            0.000000 yzml4/X  
    Fringe tolerance on surface 2 n* 7mP   
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 [8sL);pJO  
    Change in Focus                :       0.000000                            0.000000 pKM5<1J  
    Fringe tolerance on surface 3 ic+tn9f\  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Ju~8C\Dd  
    Change in Focus                :      -0.000000                            0.000000 jgb>:]:  
    Thickness tolerance on surface 1 ?_NhR   
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 GsG9;6c+u  
    Change in Focus                :       0.000000                            0.000000 e+ZC<Bdh  
    Thickness tolerance on surface 2 Hsoe?kUHF  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 4*<27  
    Change in Focus                :       0.000000                           -0.000000 6}vPwI  
    Decenter X tolerance on surfaces 1 through 3 4/rd r80  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #&hu-gMV  
    Change in Focus                :       0.000000                            0.000000 m9Z3q ;  
    Decenter Y tolerance on surfaces 1 through 3 ~TGk`cAM>  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 N8Mq0Ck{$  
    Change in Focus                :       0.000000                            0.000000 @Lj28&4:<  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 9bpY>ze  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314  ?2g\y@  
    Change in Focus                :       0.000000                            0.000000 & q(D90w.  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Q\>Kd N{  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ZA;wv+hF=  
    Change in Focus                :       0.000000                            0.000000 [}/\W`C  
    Decenter X tolerance on surface 1 igV4nL  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 T]5JsrT  
    Change in Focus                :       0.000000                            0.000000 *+E9@r=HF  
    Decenter Y tolerance on surface 1 TT(d CHft  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 LZ@4,Uj  
    Change in Focus                :       0.000000                            0.000000 @nJ#kd[  
    Tilt X tolerance on surface (degrees) 1 RyGce' q  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Mb I';Mq  
    Change in Focus                :       0.000000                            0.000000 >,8DwNuq  
    Tilt Y tolerance on surface (degrees) 1 27;t,Oq}  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 !50Fue^JM  
    Change in Focus                :       0.000000                            0.000000 ZW}0{8Dk  
    Decenter X tolerance on surface 2 *lN>RWbM%  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %h ?c  
    Change in Focus                :       0.000000                            0.000000 j HOE%  
    Decenter Y tolerance on surface 2 07T"alXf:A  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 (+Yerc.NQt  
    Change in Focus                :       0.000000                            0.000000 rZ~.tT|(  
    Tilt X tolerance on surface (degrees) 2 )ow|n^D($M  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 & >AXB6  
    Change in Focus                :       0.000000                            0.000000 w*})ZYIUT  
    Tilt Y tolerance on surface (degrees) 2 C^po*(W6  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 (~r"N?`  
    Change in Focus                :       0.000000                            0.000000 N'fE^jqU  
    Decenter X tolerance on surface 3 H\f.a R=  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ]F@XGJN  
    Change in Focus                :       0.000000                            0.000000 \advFKN  
    Decenter Y tolerance on surface 3 Y9TaU]7]  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 T(<C8  
    Change in Focus                :       0.000000                            0.000000  /{ .  
    Tilt X tolerance on surface (degrees) 3 ]-$0?/`p8  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 CL*i,9:NR  
    Change in Focus                :       0.000000                            0.000000 fjUyx:  
    Tilt Y tolerance on surface (degrees) 3 |wKC9O@%  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 /5@V $c8  
    Change in Focus                :       0.000000                            0.000000 21$YZlhJ  
    Irregularity of surface 1 in fringes AepAlnI@  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 /-wAy-W  
    Change in Focus                :       0.000000                            0.000000 a;Q6S  
    Irregularity of surface 2 in fringes 2 $^n@<uZ@  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 -.|V S|y  
    Change in Focus                :       0.000000                            0.000000 slV+2b  
    Irregularity of surface 3 in fringes 'AX/?Srd  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Uhc2`r#q  
    Change in Focus                :       0.000000                            0.000000 -{i;!XE$SR  
    Index tolerance on surface 1 6@-VLO))O  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Y"&&=M#  
    Change in Focus                :       0.000000                            0.000000 KZ/U2.{O<  
    Index tolerance on surface 2 vMsb@@O\\  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ">}l8MA  
    Change in Focus                :       0.000000                           -0.000000 (gQ^jmZPG  
    Kb~s'cTxIO  
    Worst offenders: )+c4n]  
    Type                      Value      Criterion        Change hL#5:~(  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Gb6t`dSzz  
    TSTY   2             0.20000000     0.35349910    -0.19053324 48CLnyYiF  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 gaaW:**y  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Kc+;"4/#q  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 < @9p|[!  
    TSTY   1             0.20000000     0.42678383    -0.11724851 'dYjbQ}~;  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 s+>VqyHgf  
    TSTX   1             0.20000000     0.42678383    -0.11724851 P agzp%m  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 k=2]@K$%  
    TSTY   3             0.20000000     0.42861670    -0.11541563 bv`gjR  
    CUgXpU*  
    Estimated Performance Changes based upon Root-Sum-Square method: 0wV!mC  
    Nominal MTF                 :     0.54403234 u+eA>{  
    Estimated change            :    -0.36299231 L+7j4:$B8  
    Estimated MTF               :     0.18104003 r3oAP[+n  
    -o<L%Y<n2  
    Compensator Statistics: 'f9 fw^  
    Change in back focus: cg$@x\fJ  
    Minimum            :        -0.000000 |ahleu  
    Maximum            :         0.000000 6R V]9  
    Mean               :        -0.000000 o0b}:`  
    Standard Deviation :         0.000000 >cEc##:5  
    RwMK%^b  
    Monte Carlo Analysis: AAjsb<P  
    Number of trials: 20 B5>h@p-UV  
    $E@L{5Yt  
    Initial Statistics: Normal Distribution /T`L;YE  
    nj99!"_   
      Trial       Criterion        Change pqO}=*v@  
          1     0.42804416    -0.11598818 !uLW-[F,  
    Change in Focus                :      -0.400171 8Czy<}S<G  
          2     0.54384387    -0.00018847 @e#eAJhU  
    Change in Focus                :       1.018470 W8j)2nKD  
          3     0.44510003    -0.09893230 DQM\Y{y|3  
    Change in Focus                :      -0.601922 jZu">Eh,  
          4     0.18154684    -0.36248550 vdrV)^  
    Change in Focus                :       0.920681 Q#8}pBw  
          5     0.28665820    -0.25737414 /NCEZ@2BN,  
    Change in Focus                :       1.253875 0lR/6CB  
          6     0.21263372    -0.33139862 K2,oP )0.Y  
    Change in Focus                :      -0.903878 .8hB <G  
          7     0.40051424    -0.14351809 "/Fp_g6#:  
    Change in Focus                :      -1.354815 y*A#}b*0  
          8     0.48754161    -0.05649072 i,NU%be  
    Change in Focus                :       0.215922 1UX"iO x(  
          9     0.40357468    -0.14045766 jPg8>Z&D  
    Change in Focus                :       0.281783 DytH } U"  
         10     0.26315315    -0.28087919 6r/NdI  
    Change in Focus                :      -1.048393 [8AGW7_  
         11     0.26120585    -0.28282649 az@{O4  
    Change in Focus                :       1.017611 B Jp\a7`;  
         12     0.24033815    -0.30369419 <@xp. Y  
    Change in Focus                :      -0.109292 mMm_=cfv  
         13     0.37164046    -0.17239188 BuMBnbT  
    Change in Focus                :      -0.692430 %E Jv!u*-  
         14     0.48597489    -0.05805744 sh(G{Yz@  
    Change in Focus                :      -0.662040 `9rwu:3i  
         15     0.21462327    -0.32940907 .C(Ir  
    Change in Focus                :       1.611296 N*w/\|  
         16     0.43378226    -0.11025008 b[,J-/;JNL  
    Change in Focus                :      -0.640081 :RR<-N5+  
         17     0.39321881    -0.15081353 mw)KyU#l,:  
    Change in Focus                :       0.914906 [<P(S~J  
         18     0.20692530    -0.33710703 S'qEBz  
    Change in Focus                :       0.801607 h}fz`ti U  
         19     0.51374068    -0.03029165 {#N](yUm  
    Change in Focus                :       0.947293 6}"P m  
         20     0.38013374    -0.16389860 /,dcr*  
    Change in Focus                :       0.667010 rLO1Sv  
    <RY5ZP  
    Number of traceable Monte Carlo files generated: 20 /n;-f%dL  
    T X.YTU  
    Nominal     0.54403234 ?_q e 2R.  
    Best        0.54384387    Trial     2 X[b=25Ct  
    Worst       0.18154684    Trial     4 E>f+E8?  
    Mean        0.35770970 j#d=V@=a  
    Std Dev     0.11156454 {pMbkA Q@  
    braHWC'VYg  
    @Z> {/  
    Compensator Statistics: 5BnO-[3  
    Change in back focus: i:W.,w%8  
    Minimum            :        -1.354815 :xISS  
    Maximum            :         1.611296 S 4uX utd  
    Mean               :         0.161872 /tI8JXcUK  
    Standard Deviation :         0.869664 qeLfO  
    x? 3U3\W  
    90% >       0.20977951               lPyGL-Q  
    80% >       0.22748071               c}GmS@  
    50% >       0.38667627               P3X;&iT  
    20% >       0.46553746               )8]O|Z-CU  
    10% >       0.50064115                f*KNt_|:  
    K|nh`r   
    End of Run. Yl%1e|WV  
    ^6j: lL  
    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 Iko1%GJ1Z  
    9 I>qD  
    3Ob"R%Yo  
    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 P6'Oe|+'  
    sFv68Ag+  
    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                 +KV?W+g)`  
    80% >       0.22748071                 BUcPMF%\y:  
    50% >       0.38667627                 tt5t(+5j  
    20% >       0.46553746                 /}+VH_N1  
    10% >       0.50064115 |f5WN&c  
    6S]K@C=r  
    最后这个数值是MTF值呢，还是MTF的公差？ SOE 5`  
    )CgKZ"  
    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？？？   W^j;"qj  
    j9Qd 45  
    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  : 2YW| /o4  
    90% >       0.20977951                 Ca2He}r`  
    80% >       0.22748071                 cA,`!dG2,  
    50% >       0.38667627                 *|Bu7nwg  
    20% >       0.46553746                 f0^;*Y  
    10% >       0.50064115 'R-Ly^:Qd  
    ....... E \p Qh  
    s (2/]f$  
    1')_^]  
    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^(CFE  
    Mode                : Sensitivities Y5/SbQYf1  
    Sampling            : 2 z+5ZUS2~&  
    Nominal Criterion   : 0.54403234 HL`=zB%  
    Test Wavelength     : 0.6328 .="/n8B  
    B=<Z@u  
    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？ c e\|eN[  
    =i1+t"=  
    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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