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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 1t=Y+|vA9  
    5+:b #B  
    Qpiv,n  
    j(6:   
    然后添加了默认公差分析，基本没变 &$jg *Kr  
    ]oP2T:A  
    BIDmZU9tL  
    '(Uyju=  
    然后运行分析的结果如下： n@{fqj  
    fm87?RgXD  
    Analysis of Tolerances EnA) Rz  
    7J./SBhB  
    File : E:\光学设计资料\zemax练习\f500.ZMX PTIC2  
    Title: h=YY> x  
    Date : TUE JUN 21 2011 Hkg^  
    1K^blOLXe  
    Units are Millimeters. 3SVI|A5(d  
    All changes are computed using linear differences. :+ @-F>Q  
    )<9g+^  
    Paraxial Focus compensation only.  >>Hsx2M  
    zC!]bWsD  
    WARNING: Solves should be removed prior to tolerancing. o1MI&}r  
    )-|A|1Uo  
    Mnemonics: `da6}Vqj:  
    TFRN: Tolerance on curvature in fringes. -r]s #$  
    TTHI: Tolerance on thickness. n_AW0i .  
    TSDX: Tolerance on surface decentering in x. jii2gtu'U  
    TSDY: Tolerance on surface decentering in y. uCF+Mp  
    TSTX: Tolerance on surface tilt in x (degrees). N+\#k*n?  
    TSTY: Tolerance on surface tilt in y (degrees). `r'q(M  
    TIRR: Tolerance on irregularity (fringes). =t<!W  
    TIND: Tolerance on Nd index of refraction. |^C?~g  
    TEDX: Tolerance on element decentering in x. r-'\<d(J$  
    TEDY: Tolerance on element decentering in y. ?RiW:TQ*  
    TETX: Tolerance on element tilt in x (degrees). je9[S_Z:Y  
    TETY: Tolerance on element tilt in y (degrees). 2,/("lV@0  
    B@e,3:  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. c%>t(ce`Tl  
    9 }|Bs=q  
    WARNING: Boundary constraints on compensators will be ignored. /#20`;~F)  
    Thn-8DT  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm xO9,,w47  
    Mode                : Sensitivities p]*$m=t0r  
    Sampling            : 2 LTS3[=AB  
    Nominal Criterion   : 0.54403234 B{H;3{0  
    Test Wavelength     : 0.6328 . Uv7{(  
    f,d @*E  
    \yNjsG@,  
    Fields: XY Symmetric Angle in degrees G~a;q+7v'$  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY >*,Zc  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 kR7IZo" q  
     7.CzS  
    Sensitivity Analysis: "'94E,W  
    mV@.JFXKP  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| -5>K pgXo\  
    Type                      Value      Criterion        Change          Value      Criterion        Change )K -@{v^|  
    Fringe tolerance on surface 1 =bded(3Z  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 YTL [z:k}  
    Change in Focus                :      -0.000000                            0.000000 (-(,~E  
    Fringe tolerance on surface 2 ggVB8QN{  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ] ?#f=/  
    Change in Focus                :       0.000000                            0.000000 z(g4D!  
    Fringe tolerance on surface 3 Ec8Y}C,{7<  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 37?%xQ!  
    Change in Focus                :      -0.000000                            0.000000 }EE  
    Thickness tolerance on surface 1 9Vxsv*OR,  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 xVuGean Cv  
    Change in Focus                :       0.000000                            0.000000 jeN_ sm81b  
    Thickness tolerance on surface 2 %((F} 9_6  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 !\JG]2 \  
    Change in Focus                :       0.000000                           -0.000000 L q'*B9  
    Decenter X tolerance on surfaces 1 through 3 qeQTW@6 F  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 .ZxSJ"Rk  
    Change in Focus                :       0.000000                            0.000000 #?}k0Y  
    Decenter Y tolerance on surfaces 1 through 3 ']u w,b  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 7F4$k4r<  
    Change in Focus                :       0.000000                            0.000000 $ Etf'.  
    Tilt X tolerance on surfaces 1 through 3 (degrees) (+4gq6b  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 {{ R/:-6?@  
    Change in Focus                :       0.000000                            0.000000 K*'(;1AiW  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) t&mw@bj  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _T6WA&;8  
    Change in Focus                :       0.000000                            0.000000 ORs<<H.d  
    Decenter X tolerance on surface 1 $bF.6  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671  %3KWc-  
    Change in Focus                :       0.000000                            0.000000 !a[ voUS  
    Decenter Y tolerance on surface 1 702&E(rx,  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 OC#oJwC  
    Change in Focus                :       0.000000                            0.000000 j()_ VoB1  
    Tilt X tolerance on surface (degrees) 1 zY(w`Hm2  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 _;yp^^S  
    Change in Focus                :       0.000000                            0.000000 j{7_p$JM  
    Tilt Y tolerance on surface (degrees) 1 #h /-  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ym2\o_^(  
    Change in Focus                :       0.000000                            0.000000 uDafPTF  
    Decenter X tolerance on surface 2 8|dl t$  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7xVI,\qV  
    Change in Focus                :       0.000000                            0.000000 jsf=S{^2  
    Decenter Y tolerance on surface 2 <& 8cq@<  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 @_FL,AC&m  
    Change in Focus                :       0.000000                            0.000000 A_{QY&%m  
    Tilt X tolerance on surface (degrees) 2 Fw!5hR`,  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 CP7Zin1S/w  
    Change in Focus                :       0.000000                            0.000000 -J:](p  
    Tilt Y tolerance on surface (degrees) 2 O2:m)@  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Pgr>qcbql  
    Change in Focus                :       0.000000                            0.000000 m589C+7  
    Decenter X tolerance on surface 3 udqGa)&0  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195  |}QDC/  
    Change in Focus                :       0.000000                            0.000000 s+yBxgQ/  
    Decenter Y tolerance on surface 3 Q6MDhv,  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +C/K@:p  
    Change in Focus                :       0.000000                            0.000000 EqUiC*u8{I  
    Tilt X tolerance on surface (degrees) 3 u&STGc[  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 _66zXfM<  
    Change in Focus                :       0.000000                            0.000000 o8KlY?hX  
    Tilt Y tolerance on surface (degrees) 3 |B)e! #  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 2(5wFc  
    Change in Focus                :       0.000000                            0.000000 5;>M&qmN  
    Irregularity of surface 1 in fringes l#~Sh3@L(  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ;g^QH r  
    Change in Focus                :       0.000000                            0.000000 ^+mSf`5  
    Irregularity of surface 2 in fringes zXbTpm  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 @gE +T37x2  
    Change in Focus                :       0.000000                            0.000000 h[C!cX  
    Irregularity of surface 3 in fringes ^-4mZXAy1|  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 +m:U9K(\h  
    Change in Focus                :       0.000000                            0.000000 "0`r]5 5d  
    Index tolerance on surface 1 (4$lB{%  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 V>gEF'g  
    Change in Focus                :       0.000000                            0.000000 f|Z3VS0x  
    Index tolerance on surface 2 I?4J69'  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 zST# X}  
    Change in Focus                :       0.000000                           -0.000000 / w_ Sc{  
     42Gr0+Mb  
    Worst offenders: v_{`O'#j^  
    Type                      Value      Criterion        Change #ZCgpg$wM  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 6\\B{%3R2  
    TSTY   2             0.20000000     0.35349910    -0.19053324 9 ?MOeOV8  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 _AI2\e  
    TSTX   2             0.20000000     0.35349910    -0.19053324 OJ@';ZyT=  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 2i |wQU5w  
    TSTY   1             0.20000000     0.42678383    -0.11724851 7#MBT-ih  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 .DHZs#R  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Ea!}r| ~]0  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 _f|Au`7m  
    TSTY   3             0.20000000     0.42861670    -0.11541563 K&BlWXT  
    kQ.atr`?e  
    Estimated Performance Changes based upon Root-Sum-Square method: u-OwL1S+  
    Nominal MTF                 :     0.54403234 Te$/[`<U  
    Estimated change            :    -0.36299231 jn]hqTy8  
    Estimated MTF               :     0.18104003 fa\<![8LAU  
    BB--UM{7  
    Compensator Statistics: s3g$F23  
    Change in back focus: +_:Ih,-   
    Minimum            :        -0.000000 ^=OjsN  
    Maximum            :         0.000000 Fdm7k){A  
    Mean               :        -0.000000 ,EcmMI^A  
    Standard Deviation :         0.000000 7Ar4:iNvX  
    0z#+^  
    Monte Carlo Analysis: o[+1O  
    Number of trials: 20 =c-j4xna>  
    ?.\ CUVK  
    Initial Statistics: Normal Distribution MA(\ r  
    wMt?yc:X  
      Trial       Criterion        Change fAUtqkB  
          1     0.42804416    -0.11598818 zclt2?  
    Change in Focus                :      -0.400171 `9a%}PVQ-  
          2     0.54384387    -0.00018847 P8DJv-f`  
    Change in Focus                :       1.018470 DI!NP;E  
          3     0.44510003    -0.09893230 tq<7BO<6  
    Change in Focus                :      -0.601922 n$5,B*  
          4     0.18154684    -0.36248550 k-e_lSYk&c  
    Change in Focus                :       0.920681 A[htG\A` 0  
          5     0.28665820    -0.25737414 )P:TVe9`  
    Change in Focus                :       1.253875 egx(N <  
          6     0.21263372    -0.33139862 J%j#gyTU  
    Change in Focus                :      -0.903878 B wtD!de$  
          7     0.40051424    -0.14351809 T>vHZZiO  
    Change in Focus                :      -1.354815 }k\a~<'X  
          8     0.48754161    -0.05649072 Pk~P  
    Change in Focus                :       0.215922 {(ey!O  
          9     0.40357468    -0.14045766 |5e/.T$  
    Change in Focus                :       0.281783 ^YenS6`F  
         10     0.26315315    -0.28087919 W$?1" F.  
    Change in Focus                :      -1.048393 f*W<N06EZ  
         11     0.26120585    -0.28282649 9Hlu%R  
    Change in Focus                :       1.017611 ^Bm9y R  
         12     0.24033815    -0.30369419 B`"-~4YAf  
    Change in Focus                :      -0.109292 j,EE`g&  
         13     0.37164046    -0.17239188 [g&Q_+,j  
    Change in Focus                :      -0.692430 :V}8a!3h  
         14     0.48597489    -0.05805744 uZm<:d2%)  
    Change in Focus                :      -0.662040 qO&:J\d  
         15     0.21462327    -0.32940907 =ZzhH};aX  
    Change in Focus                :       1.611296 ~}8 3\LI}  
         16     0.43378226    -0.11025008 78dmXOZ'_h  
    Change in Focus                :      -0.640081 (tyo4Tz1  
         17     0.39321881    -0.15081353 g 4Vt"2|  
    Change in Focus                :       0.914906 JS({au  
         18     0.20692530    -0.33710703 %J~8a_vO  
    Change in Focus                :       0.801607 5T8X2fS:  
         19     0.51374068    -0.03029165 V)!Oss;i  
    Change in Focus                :       0.947293 ?#pL\1"E  
         20     0.38013374    -0.16389860 [A*vl9=  
    Change in Focus                :       0.667010 8{%/!ylJz  
    iu*u|e  
    Number of traceable Monte Carlo files generated: 20 +;FF0_   
    pfZn<n5p  
    Nominal     0.54403234 W 86S)+h  
    Best        0.54384387    Trial     2 .? !{.D  
    Worst       0.18154684    Trial     4 ik7#Og~ 3  
    Mean        0.35770970 MI',E?#yB  
    Std Dev     0.11156454 yq6!8OkF  
    s![=F}ck  
    ={={ W  
    Compensator Statistics: XRP/E_4  
    Change in back focus: Ls*.=ARq  
    Minimum            :        -1.354815 wnt^WW=a[  
    Maximum            :         1.611296 9dqD(S#C;"  
    Mean               :         0.161872 c?jjY4u  
    Standard Deviation :         0.869664 ScZ$&n  
    +-qD!(&-6  
    90% >       0.20977951               0S/&^  
    80% >       0.22748071               >4LX!^V"  
    50% >       0.38667627               1;.}u= 8  
    20% >       0.46553746               /~g M,*  
    10% >       0.50064115                6Oo'&3@  
    /xrt,M@  
    End of Run. sE>'~ +1_O  
    //H+S q66  
    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 ^6J*yV%  
    >a_K:O|AJ  
    -W+dsZ Sv8  
    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 g6 7*Bs  
    g.F{yX]  
    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                 8)R )h/E>  
    80% >       0.22748071                 xA&G91|s  
    50% >       0.38667627                 zZ;tSKL  
    20% >       0.46553746                 ;'=!Fv  
    10% >       0.50064115 (CuaBHR  
    6pr}A  
    最后这个数值是MTF值呢，还是MTF的公差？ {d^&$~  
    9D8el}uHf  
    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？？？   J5|Dduv  
    d/R:-{J)c  
    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  : \zgRzO'N  
    90% >       0.20977951                 xN2{Vi{ad  
    80% >       0.22748071                  l R;<6  
    50% >       0.38667627                 F(@|p]3*  
    20% >       0.46553746                 #7gOtP#{  
    10% >       0.50064115 wm@1jLjrQ  
    ....... <\Y>y+$3  
    !;fkc0&!  
    VbA#D4;  
    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   mN ~;MR;  
    Mode                : Sensitivities tEf-BV;\y  
    Sampling            : 2 #4~Ivj  
    Nominal Criterion   : 0.54403234 4my8 p Fk  
    Test Wavelength     : 0.6328 Sy8o/-  
    C{e:xGJK  
    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？ _(oJ8h(  
    RHE< QG  
    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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