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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
    助理工程师
     
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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 $dp;$X3  
    _U"9#<  
    4[ 7) $  
    =wEqI)Td  
    然后添加了默认公差分析，基本没变 %`cP|k  
    E26zw9d  
    H 40~i=.  
    BP6|^Q  
    然后运行分析的结果如下： mP@< UjxI  
    ?J<V-,i  
    Analysis of Tolerances cF[L6{Oe  
    TA.ugF)h  
    File : E:\光学设计资料\zemax练习\f500.ZMX DaV:Slp9  
    Title: @nuMl5C-`  
    Date : TUE JUN 21 2011 $fhb-c3  
    !5hNG('f  
    Units are Millimeters. 5ir[}I^z  
    All changes are computed using linear differences. {*Ag[HS0u  
    [=})^t?8  
    Paraxial Focus compensation only. 1gA9h-'w  
    J\kGD  
    WARNING: Solves should be removed prior to tolerancing. _NfdJ=[Xh  
    J 8z|ua  
    Mnemonics: pQGlg[i2/  
    TFRN: Tolerance on curvature in fringes. zT\nj&7  
    TTHI: Tolerance on thickness. h&t/ L  
    TSDX: Tolerance on surface decentering in x. DHUK_#!  
    TSDY: Tolerance on surface decentering in y. tJ{3Z}K  
    TSTX: Tolerance on surface tilt in x (degrees). J-6l<%962%  
    TSTY: Tolerance on surface tilt in y (degrees). "G^Z>Z-`  
    TIRR: Tolerance on irregularity (fringes). 00?_10x)  
    TIND: Tolerance on Nd index of refraction. 3KyIBrdi?  
    TEDX: Tolerance on element decentering in x. ps DY}y\"  
    TEDY: Tolerance on element decentering in y. *Vbf ;=Mb  
    TETX: Tolerance on element tilt in x (degrees). J <"=c z$  
    TETY: Tolerance on element tilt in y (degrees). H%LoI)w  
    ,G q?  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 0^H"eQO  
    CNo'qlvF5N  
    WARNING: Boundary constraints on compensators will be ignored. (;9-8Y&_d  
    LFzL{rny!U  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Yq6e=?-  
    Mode                : Sensitivities  b6`_;Z  
    Sampling            : 2 gQ < >S  
    Nominal Criterion   : 0.54403234 "Je*70LG#  
    Test Wavelength     : 0.6328 !O`aaLc  
    ;;^OKrzWW  
    8=GgTpO5  
    Fields: XY Symmetric Angle in degrees Io|3zE*<  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY t",=]k  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ~rUcko8  
    | ODi[~y  
    Sensitivity Analysis: /IO<TF(X  
    HX;JO[0  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| #~_ZG% u  
    Type                      Value      Criterion        Change          Value      Criterion        Change GOKca%DT=  
    Fringe tolerance on surface 1 `X["Bgk$!T  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 c Y C@@?  
    Change in Focus                :      -0.000000                            0.000000 m-< "`:+  
    Fringe tolerance on surface 2 ;?{N=x8  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 oMb&a0-7u  
    Change in Focus                :       0.000000                            0.000000 '`)r<lYN,  
    Fringe tolerance on surface 3 qZV.~F+  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 g< F7UA  
    Change in Focus                :      -0.000000                            0.000000 \>DMN #  
    Thickness tolerance on surface 1 ^&!S nM  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ajy +%sXf=  
    Change in Focus                :       0.000000                            0.000000 4x2 ;@Pd  
    Thickness tolerance on surface 2 S'h{["P~ 0  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Vr<eU>W  
    Change in Focus                :       0.000000                           -0.000000 r1jsw j%7  
    Decenter X tolerance on surfaces 1 through 3 \l_U+d,qq  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 6h5,XcO4  
    Change in Focus                :       0.000000                            0.000000 W$>AK_Y}  
    Decenter Y tolerance on surfaces 1 through 3 ;(F_2&he  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 >" &&,~  
    Change in Focus                :       0.000000                            0.000000 `|rr<Tsy\  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 2C@ui728  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 u ? }T)B  
    Change in Focus                :       0.000000                            0.000000 8mmHefZ}2!  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) V-7A80!5  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 J)o =0i>*  
    Change in Focus                :       0.000000                            0.000000 !4/s|b9K  
    Decenter X tolerance on surface 1 o^\L41x3  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 $`wo8A|)  
    Change in Focus                :       0.000000                            0.000000 !W4X4@  
    Decenter Y tolerance on surface 1 @ptE&m  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 vNA~EV02  
    Change in Focus                :       0.000000                            0.000000 z'!sc"]W6  
    Tilt X tolerance on surface (degrees) 1 <hv {,1p-r  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 s|O4 >LsG  
    Change in Focus                :       0.000000                            0.000000 mdB~~j  
    Tilt Y tolerance on surface (degrees) 1 0dKv%X#\  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 -Wt (t2  
    Change in Focus                :       0.000000                            0.000000 A7hWAq  
    Decenter X tolerance on surface 2 hmG^l4B.T  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 *#| lhf'  
    Change in Focus                :       0.000000                            0.000000 pR,eus;8  
    Decenter Y tolerance on surface 2  {ch+G~oS  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 H6vO}pq) r  
    Change in Focus                :       0.000000                            0.000000 9R1S20O  
    Tilt X tolerance on surface (degrees) 2 m~<<ok_  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 2Sha&Z*CE  
    Change in Focus                :       0.000000                            0.000000 FRR`<do5$,  
    Tilt Y tolerance on surface (degrees) 2 K]Rb~+a<  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Q2 S!}A  
    Change in Focus                :       0.000000                            0.000000 ^h5h kIx0  
    Decenter X tolerance on surface 3 A4mnm6Tf  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ]iHSUP  
    Change in Focus                :       0.000000                            0.000000 5/f"dX  
    Decenter Y tolerance on surface 3 Q$B\)9`v[  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6$y$ VeW  
    Change in Focus                :       0.000000                            0.000000 b;~?a#Z}  
    Tilt X tolerance on surface (degrees) 3 l.Yq4qW  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 lI&5.,2MP  
    Change in Focus                :       0.000000                            0.000000 U'Mxf'q  
    Tilt Y tolerance on surface (degrees) 3 @@QB,VS;{<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 upc-Qvk  
    Change in Focus                :       0.000000                            0.000000 Vgg' 5o&.  
    Irregularity of surface 1 in fringes 4*Y`Pn@  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 X[;-SXq  
    Change in Focus                :       0.000000                            0.000000 i9O;D*  
    Irregularity of surface 2 in fringes KrzIL[;2o  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 D3 .$Vl,.  
    Change in Focus                :       0.000000                            0.000000 '#ow 9w+^  
    Irregularity of surface 3 in fringes ys DGF@wZC  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 pLtAusx  
    Change in Focus                :       0.000000                            0.000000 )"sJaHx<  
    Index tolerance on surface 1 8n~ o="  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 v9K=\ j  
    Change in Focus                :       0.000000                            0.000000 Pgh)+>ON  
    Index tolerance on surface 2 F./$nwb  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 <3WaFi u  
    Change in Focus                :       0.000000                           -0.000000 rIRkXO)  
    .EXxNB]%Y&  
    Worst offenders: 3zsjL=ta  
    Type                      Value      Criterion        Change @Z[XV"w|  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 7c>{og6  
    TSTY   2             0.20000000     0.35349910    -0.19053324 .cCB,re  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 )ipTm{  
    TSTX   2             0.20000000     0.35349910    -0.19053324 I;rh(FMV  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 j@778fvM\t  
    TSTY   1             0.20000000     0.42678383    -0.11724851 *T:gx:Sg/  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Hr}pO"%  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ?'%9  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 m1{OaHxKh  
    TSTY   3             0.20000000     0.42861670    -0.11541563 "}ZUa~7  
    eGE[4Z  
    Estimated Performance Changes based upon Root-Sum-Square method: (|t)MnPfY  
    Nominal MTF                 :     0.54403234 skzTw66W.  
    Estimated change            :    -0.36299231 1yT\|2ARZ%  
    Estimated MTF               :     0.18104003 ^oH!FN`;{  
    D]B;5f  
    Compensator Statistics: 88~ lP7J  
    Change in back focus: LP:U6 Z  
    Minimum            :        -0.000000 A"pV 7 y  
    Maximum            :         0.000000 &br_opNi  
    Mean               :        -0.000000 cjyb:gAO  
    Standard Deviation :         0.000000 > a"4aYj  
    F2WMts  
    Monte Carlo Analysis: 1WJ%n;  
    Number of trials: 20 rG"QK!R5  
    Ou,Eu05jt'  
    Initial Statistics: Normal Distribution YH-+s   
    oaMh5 FPy  
      Trial       Criterion        Change vI1UFD D  
          1     0.42804416    -0.11598818 l~j{i/>  
    Change in Focus                :      -0.400171 ;{S7bH'6m  
          2     0.54384387    -0.00018847 OaCp3No  
    Change in Focus                :       1.018470 QbG`F8dj  
          3     0.44510003    -0.09893230 (8d"G9R(  
    Change in Focus                :      -0.601922 .In8!hjYy4  
          4     0.18154684    -0.36248550 n.tJ-l5[  
    Change in Focus                :       0.920681 r}~|,O3bc'  
          5     0.28665820    -0.25737414 kp>AZVk  
    Change in Focus                :       1.253875 +8eW/Bs@2  
          6     0.21263372    -0.33139862 ~h@<14c{X  
    Change in Focus                :      -0.903878 f3M~2jbv'p  
          7     0.40051424    -0.14351809 ^ e4y:#Nu  
    Change in Focus                :      -1.354815 C Y K W4  
          8     0.48754161    -0.05649072 M%@ =BT  
    Change in Focus                :       0.215922 ;&?l1Vu  
          9     0.40357468    -0.14045766 a]nyZdt`  
    Change in Focus                :       0.281783 &.`/ln  
         10     0.26315315    -0.28087919 $bo 5:c  
    Change in Focus                :      -1.048393 +t`QHvxv  
         11     0.26120585    -0.28282649 l! 9G  
    Change in Focus                :       1.017611 D`fi\A  
         12     0.24033815    -0.30369419 ZW>?y$C+  
    Change in Focus                :      -0.109292 &bw ``e&c  
         13     0.37164046    -0.17239188 ~ @Au<   
    Change in Focus                :      -0.692430 8"2X 8C8  
         14     0.48597489    -0.05805744 2 }HS`) /  
    Change in Focus                :      -0.662040 :"e,& %  
         15     0.21462327    -0.32940907 =h/0k y  
    Change in Focus                :       1.611296 +'fdAc:5',  
         16     0.43378226    -0.11025008 'l`T(_zL\%  
    Change in Focus                :      -0.640081 =`y.L5  
         17     0.39321881    -0.15081353 :.%Hu9=GL  
    Change in Focus                :       0.914906 q"%;),@  
         18     0.20692530    -0.33710703 "J(7fL$!  
    Change in Focus                :       0.801607 ?iQA>P9B  
         19     0.51374068    -0.03029165 UB&)U\hn  
    Change in Focus                :       0.947293 KtY_m`DY4R  
         20     0.38013374    -0.16389860 8 ?+t+m[  
    Change in Focus                :       0.667010 .-W_m7&}  
    l: X]$2;  
    Number of traceable Monte Carlo files generated: 20 %U$PcHOo  
    2 - ?  
    Nominal     0.54403234 +""8aA  
    Best        0.54384387    Trial     2 I_/kJ#7vj  
    Worst       0.18154684    Trial     4 l|onH;g\  
    Mean        0.35770970 )s';m$  
    Std Dev     0.11156454 B\z4o\am%  
    d,0Yi u.p  
    Nq3q##Ut:  
    Compensator Statistics: #Kp/A N5YC  
    Change in back focus: ,0=@cJ  
    Minimum            :        -1.354815 lY_&P.B  
    Maximum            :         1.611296 >kJEa8  
    Mean               :         0.161872 u  teI[Q  
    Standard Deviation :         0.869664 ctg[C$<q|  
    2rK<UPIq  
    90% >       0.20977951               hiN6]jL|O  
    80% >       0.22748071               1vF^<{%v  
    50% >       0.38667627               Y)=89s&t  
    20% >       0.46553746               "77 j(Vs9  
    10% >       0.50064115                $A/$M\ :  
    ]c \gUU  
    End of Run. i1#\S0jN  
    8yDu(.Q  
    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 ZJxUv {J  
    2nFSu9}+r  
    9V%s1@K  
    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 j+c<0,Kj  
    `Al5(0Q  
    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                 l)glT]G3+  
    80% >       0.22748071                 zUM;Qwl  
    50% >       0.38667627                 @LS*WJ< w-  
    20% >       0.46553746                 k;w1y(  
    10% >       0.50064115 wjF/c  
    o yBBW?m  
    最后这个数值是MTF值呢，还是MTF的公差？ JRkC~fv  
    SsDe\"?Q  
    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？？？   x?:[:Hf   
    &k /uR;yw  
    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  : @:u>  
    90% >       0.20977951                 P,-f]k[_  
    80% >       0.22748071                 q}[g/%  
    50% >       0.38667627                 G+2!+N\P  
    20% >       0.46553746                 dWbSrl  
    10% >       0.50064115 ]n9o=^q/  
    ....... `)Z"||8K  
    ocCq$%Ka  
    d[mmwgSR?I  
    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?_'OwaY  
    Mode                : Sensitivities KE>|,U r  
    Sampling            : 2 4&b*|"Iw  
    Nominal Criterion   : 0.54403234 FXMrD,qVg  
    Test Wavelength     : 0.6328 ?=zF]J:G1w  
    Jbv66)0M  
    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？ l9Xz,H   
    okwkMd-yW  
    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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