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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 DgdW.Kj|IL  
    ZGf=/Ra a  
    u7/M>YJ`T  
    jk|0<-3  
    然后添加了默认公差分析，基本没变 E`i;9e'S  
    ?832#a?FZ;  
    k @ Hu0x  
    `jV0;sPd;  
    然后运行分析的结果如下： /`1zkBj<&  
    $]Q_x?  
    Analysis of Tolerances `S!`=26Z!  
    ';1 c  
    File : E:\光学设计资料\zemax练习\f500.ZMX I@hC$o  
    Title: =v_ju;C=  
    Date : TUE JUN 21 2011 ss[8d%V  
    ^Dh2_vbI  
    Units are Millimeters. 5'o.v^l  
    All changes are computed using linear differences. x[vX|oE!A  
    I*#~@:4*  
    Paraxial Focus compensation only. ^|8cS0dK]Q  
    <q!{<(:  
    WARNING: Solves should be removed prior to tolerancing. Y`M.hYBXk  
    3*FktXmI}  
    Mnemonics: 74KFsir@  
    TFRN: Tolerance on curvature in fringes. [iDa6mcth  
    TTHI: Tolerance on thickness. N%T-Q9k  
    TSDX: Tolerance on surface decentering in x. @p!["v&  
    TSDY: Tolerance on surface decentering in y. `xtN+y F  
    TSTX: Tolerance on surface tilt in x (degrees). v!x=fjr<  
    TSTY: Tolerance on surface tilt in y (degrees). eQ*gnV}rE%  
    TIRR: Tolerance on irregularity (fringes). C6Kz6_DQZ  
    TIND: Tolerance on Nd index of refraction. Qc3 !FW<26  
    TEDX: Tolerance on element decentering in x. ,@P3!|  
    TEDY: Tolerance on element decentering in y. K,So#Ui  
    TETX: Tolerance on element tilt in x (degrees). qOng?(I  
    TETY: Tolerance on element tilt in y (degrees). P[Qr[74 )  
    4gYP .h:,  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. s#d>yx_b  
    .M_;mhRI  
    WARNING: Boundary constraints on compensators will be ignored. '8}\! i&  
    < *XC`Ii  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm K46mE   
    Mode                : Sensitivities  1 ft. ZJ  
    Sampling            : 2 %~6+=*(\  
    Nominal Criterion   : 0.54403234 p>MX}^6  
    Test Wavelength     : 0.6328 UboOIx5:  
    $H_4Y-xOi  
    @]cpPW-b  
    Fields: XY Symmetric Angle in degrees |C5i3?  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY w("jyvV[C  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 -8EdTc@  
    Q,s,EooIx  
    Sensitivity Analysis: !{SEm"J^  
    j Sddjs  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Z3S\@_/;  
    Type                      Value      Criterion        Change          Value      Criterion        Change C#gQJ=!B  
    Fringe tolerance on surface 1 /A_ IS`  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 +[cm  
    Change in Focus                :      -0.000000                            0.000000 hwexv 9""  
    Fringe tolerance on surface 2 b?r0n]  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 bi,%QZZ  
    Change in Focus                :       0.000000                            0.000000 & ??)gMM[  
    Fringe tolerance on surface 3 I{M2nQi  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 F9d][ P@@  
    Change in Focus                :      -0.000000                            0.000000 ~)()PO  
    Thickness tolerance on surface 1 YrB-;R 1+  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 EK#w: "  
    Change in Focus                :       0.000000                            0.000000 xE+Go  
    Thickness tolerance on surface 2 ysL8w"t  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 l ='lV]  
    Change in Focus                :       0.000000                           -0.000000 .%*.nq  
    Decenter X tolerance on surfaces 1 through 3 \ 0:ITz  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 S?D2`b  
    Change in Focus                :       0.000000                            0.000000 .}Xkr+ +]  
    Decenter Y tolerance on surfaces 1 through 3 o]jo R3  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 oE5+   
    Change in Focus                :       0.000000                            0.000000 ~r!jVK>^  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 5Lue.U%a  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +[z(N  
    Change in Focus                :       0.000000                            0.000000 E{j6OX\  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ]bRu8kn  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 u |#ruFR  
    Change in Focus                :       0.000000                            0.000000 @UvjJ  
    Decenter X tolerance on surface 1 m V^dIm  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 y*zZ }>  
    Change in Focus                :       0.000000                            0.000000 b5yb~;0  
    Decenter Y tolerance on surface 1 ,E/vHI8  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 71wyZJ  
    Change in Focus                :       0.000000                            0.000000 4,)=r3;&!  
    Tilt X tolerance on surface (degrees) 1 N\H(AzMw  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ujwI4oj"c  
    Change in Focus                :       0.000000                            0.000000 :Z&ipd!yY  
    Tilt Y tolerance on surface (degrees) 1 c5U1N&k5&  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 \2~.r/`1  
    Change in Focus                :       0.000000                            0.000000 /oWB7l&  
    Decenter X tolerance on surface 2 ` 3<#DZ;!  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 4N*^%  
    Change in Focus                :       0.000000                            0.000000 5nEvnnx0  
    Decenter Y tolerance on surface 2 x!G\-2#  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 W&rjJZY6  
    Change in Focus                :       0.000000                            0.000000 g |2D(J  
    Tilt X tolerance on surface (degrees) 2 1tg   
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 n NAJ8z}Nt  
    Change in Focus                :       0.000000                            0.000000 /x`H6'3?  
    Tilt Y tolerance on surface (degrees) 2 \*_qP*vq@  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  {!x-kF_  
    Change in Focus                :       0.000000                            0.000000 ))eR  
    Decenter X tolerance on surface 3 ?t<wp3bZ  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195  vlE#z  
    Change in Focus                :       0.000000                            0.000000 xXLKL6F(\  
    Decenter Y tolerance on surface 3 P^&+ehp  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 r}XD{F}"  
    Change in Focus                :       0.000000                            0.000000 $KtMv +m"  
    Tilt X tolerance on surface (degrees) 3 ~~h9yvW7&  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 SUx\qz)  
    Change in Focus                :       0.000000                            0.000000 g%^Zq"  
    Tilt Y tolerance on surface (degrees) 3 6`EyzB%.$  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 WukCE  
    Change in Focus                :       0.000000                            0.000000 l1YyZ^Z  
    Irregularity of surface 1 in fringes mB_ba1r  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 y5l4H8{h}  
    Change in Focus                :       0.000000                            0.000000 3{,Mpb@  
    Irregularity of surface 2 in fringes {K:/(\  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _{T`ka  
    Change in Focus                :       0.000000                            0.000000 "%0RR?  
    Irregularity of surface 3 in fringes i"_JF-IbN  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 en#W<"_"  
    Change in Focus                :       0.000000                            0.000000 X~W5Z(w(O  
    Index tolerance on surface 1 W*VQ"CW{^]  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 _pk=IHGsB  
    Change in Focus                :       0.000000                            0.000000 mAXTO7  
    Index tolerance on surface 2 g[!sGa &  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Xa%Z0% {  
    Change in Focus                :       0.000000                           -0.000000 R'&^)_  
    I7]45pF  
    Worst offenders: >Utn[']~  
    Type                      Value      Criterion        Change ~l.]3wyk  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 g"<kj"  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ;Q-sie(#  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 P]INYH  
    TSTX   2             0.20000000     0.35349910    -0.19053324 w=O:|Xu#*  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 US4X CJxB  
    TSTY   1             0.20000000     0.42678383    -0.11724851 4|x5-m+T  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 .bew,92  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ]_5C5m  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 9KCnitU  
    TSTY   3             0.20000000     0.42861670    -0.11541563 At.WBa3j%{  
    R?^FO:nM%!  
    Estimated Performance Changes based upon Root-Sum-Square method: >uxak2nM-  
    Nominal MTF                 :     0.54403234 #F[6$. Gr  
    Estimated change            :    -0.36299231 A@&+!sO  
    Estimated MTF               :     0.18104003 8=t?rA  
    &>sG x K  
    Compensator Statistics: r+\it&cW+  
    Change in back focus: R%}OZJ_  
    Minimum            :        -0.000000 R"K{@8b  
    Maximum            :         0.000000 33-=Z9|r  
    Mean               :        -0.000000 DR^mT$  
    Standard Deviation :         0.000000 4 YI,:  
    |yw-H2k1  
    Monte Carlo Analysis: )FE'#\  
    Number of trials: 20 |+ @  
    W9.Z hpM  
    Initial Statistics: Normal Distribution trM8 p  
    qo4AQ}0 <  
      Trial       Criterion        Change {.eC"  
          1     0.42804416    -0.11598818 ; N!K/[p=  
    Change in Focus                :      -0.400171 NIQa{R/H  
          2     0.54384387    -0.00018847 >P+V!-%#  
    Change in Focus                :       1.018470 #P18vK5  
          3     0.44510003    -0.09893230 #S_LKc  
    Change in Focus                :      -0.601922 ;I]TM#qGF  
          4     0.18154684    -0.36248550 }?8KFe7U  
    Change in Focus                :       0.920681 u~% m(  
          5     0.28665820    -0.25737414 (w4#?_  
    Change in Focus                :       1.253875 5+giT5K*h  
          6     0.21263372    -0.33139862 vg *+>lbA  
    Change in Focus                :      -0.903878 9JP{F  
          7     0.40051424    -0.14351809 !=I:Uc-Y  
    Change in Focus                :      -1.354815 SO8Ej)m  
          8     0.48754161    -0.05649072 UV@<55)K  
    Change in Focus                :       0.215922 B% BO  
          9     0.40357468    -0.14045766 v]Pw]m5=U  
    Change in Focus                :       0.281783 K\=bpc"Fy  
         10     0.26315315    -0.28087919 Ab8~'<F$B  
    Change in Focus                :      -1.048393 ]X@/0  
         11     0.26120585    -0.28282649 < _c84,[V  
    Change in Focus                :       1.017611 2-UZ|y  
         12     0.24033815    -0.30369419 ukvz#hdE  
    Change in Focus                :      -0.109292 \ >1M?  
         13     0.37164046    -0.17239188 R0-ARq#0<  
    Change in Focus                :      -0.692430 u;1#eP\;  
         14     0.48597489    -0.05805744 `hI1  
    Change in Focus                :      -0.662040 jAN(r>zVL  
         15     0.21462327    -0.32940907 xLq+n jH E  
    Change in Focus                :       1.611296 dax|4R  
         16     0.43378226    -0.11025008 ~d){7OG  
    Change in Focus                :      -0.640081 irgjq/&d  
         17     0.39321881    -0.15081353 [uZU p*.V  
    Change in Focus                :       0.914906 q>!T*BQ  
         18     0.20692530    -0.33710703 9]7+fu  
    Change in Focus                :       0.801607 DlfXzKn;  
         19     0.51374068    -0.03029165 &> }MoB  
    Change in Focus                :       0.947293 A7~)h}~   
         20     0.38013374    -0.16389860 kZSe#'R's  
    Change in Focus                :       0.667010 #d(6q$IE  
    aN%t>*?Xa  
    Number of traceable Monte Carlo files generated: 20 8t0i j  
    JnV$)EYi  
    Nominal     0.54403234 #q(BR{A>t  
    Best        0.54384387    Trial     2 ;bkS0Vmg  
    Worst       0.18154684    Trial     4 >Py;6K  
    Mean        0.35770970 ;cxYX/fJ  
    Std Dev     0.11156454 /xj'Pq((}p  
    kd!f/'E!  
    >L[,.}(9  
    Compensator Statistics: :mL\KQ  
    Change in back focus: 9Ni$nZN  
    Minimum            :        -1.354815 Y2<Z"D`  
    Maximum            :         1.611296 qd!$nr  
    Mean               :         0.161872 "R4~ 8r  
    Standard Deviation :         0.869664 YPGn8A  
    kX5v!pm[  
    90% >       0.20977951               yd#4b`8U`  
    80% >       0.22748071               ?8YHz  
    50% >       0.38667627               JFR,QUT  
    20% >       0.46553746               0`,a@Q4  
    10% >       0.50064115                "2Js[uf  
    _aa3Qw x  
    End of Run. 78y4nRQ*  
    [<8<+lH=P  
    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 )k0bP1oGS  
    LW ntZ.  
    $].< /  
    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 C0KP,JS&  
    tdZ:w  
    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                 0o(/%31]  
    80% >       0.22748071                 0m51nw~B  
    50% >       0.38667627                  Ur]5AJ  
    20% >       0.46553746                 )jCAfdnCs  
    10% >       0.50064115 YX@[z 5*  
    YuLW]Q?v  
    最后这个数值是MTF值呢，还是MTF的公差？ @Je{;1   
    wArNWBM  
    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？？？   #{i\t E  
    ?ry`+nx  
    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  : N[ z7<$$  
    90% >       0.20977951                 5e6]v2 k  
    80% >       0.22748071                 |SQ5Sb  
    50% >       0.38667627                 YRAWylm  
    20% >       0.46553746                 kd9hz-*  
    10% >       0.50064115 28>gAz.#  
    ....... H '&x4[J:  
    i|)<#Ywl  
    ?b:l.0m  
    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   Wg3y y8vIW  
    Mode                : Sensitivities /RIvUC1  
    Sampling            : 2 zdlysr#  
    Nominal Criterion   : 0.54403234 w|O MT>.  
    Test Wavelength     : 0.6328 AQDT6E:  
    b(wW;C'#0p  
    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？ ] bz']`  
    uosFpa  
    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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