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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 AL;"S;8  
    f 6q@  
    &5a>5ZG}  
    V7^?jck  
    然后添加了默认公差分析，基本没变 Rpr# ,|  
    ^v},Sa/ot]  
    o _-t/ ?  
    <Z&gAqj 2  
    然后运行分析的结果如下： N*xgVj*  
    56 )B/0=  
    Analysis of Tolerances ijTtyTC  
    "P|G^*"~2  
    File : E:\光学设计资料\zemax练习\f500.ZMX wOsr#t7  
    Title: 2P|-V};9  
    Date : TUE JUN 21 2011 giTlXz3D9  
    #?/.LMn{  
    Units are Millimeters. x:2_FoQ  
    All changes are computed using linear differences. sq^,l6es>  
    '%MIG88  
    Paraxial Focus compensation only. lz(9pz  
    wD<G+Y}  
    WARNING: Solves should be removed prior to tolerancing. xs:{%ki  
    |gaZq!l  
    Mnemonics: k X-AC5]  
    TFRN: Tolerance on curvature in fringes. ZLV~It&)  
    TTHI: Tolerance on thickness. g&[g?L  
    TSDX: Tolerance on surface decentering in x. Bm?Ku7}.  
    TSDY: Tolerance on surface decentering in y. m/ukH{H1%  
    TSTX: Tolerance on surface tilt in x (degrees). *iR`mZb  
    TSTY: Tolerance on surface tilt in y (degrees). qg|+BIi Uz  
    TIRR: Tolerance on irregularity (fringes). 6->b(B V $  
    TIND: Tolerance on Nd index of refraction. ufo?ZFq@$L  
    TEDX: Tolerance on element decentering in x. P~#jvm!  
    TEDY: Tolerance on element decentering in y. *qqFIp^  
    TETX: Tolerance on element tilt in x (degrees).  WsoB!m  
    TETY: Tolerance on element tilt in y (degrees). <s:Xj  
    4>|5B:  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. p?`N<ykF<  
    yTEuf@  
    WARNING: Boundary constraints on compensators will be ignored. Uag1vW,c  
    =FKB)#N  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm OU##A:gI  
    Mode                : Sensitivities M]2 c-  
    Sampling            : 2 $D89|sy  
    Nominal Criterion   : 0.54403234 t EeMl =u  
    Test Wavelength     : 0.6328 DXiD>1(q  
    8}0 D?  
    N+tS:$V  
    Fields: XY Symmetric Angle in degrees 4rx|6NV6  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY =f["M=)ZJ  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 _&M>f?l  
    }_;nl n?t(  
    Sensitivity Analysis: i6-K!  
    ks;%f34  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| =_86{wlk  
    Type                      Value      Criterion        Change          Value      Criterion        Change #i,O "`4  
    Fringe tolerance on surface 1 ( r O j,D  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 e`oc#Od&x]  
    Change in Focus                :      -0.000000                            0.000000 Ju\"l8[f  
    Fringe tolerance on surface 2 -1o1k-8d  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 5Q88OxH  
    Change in Focus                :       0.000000                            0.000000 o#Y1Uamkf  
    Fringe tolerance on surface 3 0 QpWt  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 s6egd%r  
    Change in Focus                :      -0.000000                            0.000000 ,i|f8pZ  
    Thickness tolerance on surface 1 ]]7T5'.  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 o]Ki+ U  
    Change in Focus                :       0.000000                            0.000000 |( V3  
    Thickness tolerance on surface 2 Nt'5}  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 XVfQscZe  
    Change in Focus                :       0.000000                           -0.000000 fP|\1Y?CS  
    Decenter X tolerance on surfaces 1 through 3 IlrmXSr  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Dmw,Bi*  
    Change in Focus                :       0.000000                            0.000000 x:xQXjJ  
    Decenter Y tolerance on surfaces 1 through 3 3:gk:j#  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 S]N4o'K}q  
    Change in Focus                :       0.000000                            0.000000 71%u|k8|  
    Tilt X tolerance on surfaces 1 through 3 (degrees) /[s$A?  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 87Kx7CKF"  
    Change in Focus                :       0.000000                            0.000000 '3Ri/V,  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) _e'mG'P(  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 x#^kv)  
    Change in Focus                :       0.000000                            0.000000 (}:xs,Ax  
    Decenter X tolerance on surface 1 %9lxE[/  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6PH*]#PfoD  
    Change in Focus                :       0.000000                            0.000000 N_<n$3P\?f  
    Decenter Y tolerance on surface 1 by<2hLB9Q  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 $d"+Njd  
    Change in Focus                :       0.000000                            0.000000 fCfY.vd5  
    Tilt X tolerance on surface (degrees) 1 J3]m*i5A  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 *.RVH<W=8  
    Change in Focus                :       0.000000                            0.000000 q~3&f  
    Tilt Y tolerance on surface (degrees) 1 b$`O|S  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 -%.V0=G(Z  
    Change in Focus                :       0.000000                            0.000000 4!jHZ<2 Z  
    Decenter X tolerance on surface 2 d(!N$B\[5T  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 `g=~u{ 0  
    Change in Focus                :       0.000000                            0.000000 k-U/x"Pl  
    Decenter Y tolerance on surface 2 ,b4&$W].  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {aSq3C<r  
    Change in Focus                :       0.000000                            0.000000 93\,m+-  
    Tilt X tolerance on surface (degrees) 2 2}b bdXx  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 sn( }5;  
    Change in Focus                :       0.000000                            0.000000 BP6Shc|C  
    Tilt Y tolerance on surface (degrees) 2 7h2bL6Y88  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 S\A[Z&k 0  
    Change in Focus                :       0.000000                            0.000000 7L*`nU|h  
    Decenter X tolerance on surface 3 U~m.I  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 (R-Q9F+;  
    Change in Focus                :       0.000000                            0.000000 i`qh|w/b_  
    Decenter Y tolerance on surface 3 YLGLr @:q  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 TTpF m~?(  
    Change in Focus                :       0.000000                            0.000000 .Dm{mV@*T  
    Tilt X tolerance on surface (degrees) 3 ]_?y[@ZP  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Xhi?b|  
    Change in Focus                :       0.000000                            0.000000 vknFtpx  
    Tilt Y tolerance on surface (degrees) 3 ,whNh  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 #pfosC[  
    Change in Focus                :       0.000000                            0.000000 U:r2hqegd  
    Irregularity of surface 1 in fringes 5MJ'/Fy(  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 %Qq)=J<H ;  
    Change in Focus                :       0.000000                            0.000000 ]Ho`*$dD  
    Irregularity of surface 2 in fringes 8H?AL RG  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 PvwIO_W  
    Change in Focus                :       0.000000                            0.000000 1tdCzbEn+  
    Irregularity of surface 3 in fringes 3iw9jhK!W  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 #EUgb7  
    Change in Focus                :       0.000000                            0.000000 :(Bi {cw  
    Index tolerance on surface 1 ^%pwyY\t  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Ks(U]G"V  
    Change in Focus                :       0.000000                            0.000000 ?sYjFiE  
    Index tolerance on surface 2 0 ,-b %X  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ]6 wi  
    Change in Focus                :       0.000000                           -0.000000 E6M: ^p*<  
    *\",  qMp  
    Worst offenders: e% 6{P  
    Type                      Value      Criterion        Change m12 B:f  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 P hu| hx<  
    TSTY   2             0.20000000     0.35349910    -0.19053324 -::%9D}P|  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 "'Uk0>d=_I  
    TSTX   2             0.20000000     0.35349910    -0.19053324 sdQv:nd'R  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 c ?XUb[  
    TSTY   1             0.20000000     0.42678383    -0.11724851 mNoqs&UB  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 "M^W:4_  
    TSTX   1             0.20000000     0.42678383    -0.11724851 VsEAo  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Hw&M2a  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ^ {f ^WL=  
    E e>j7k.G.  
    Estimated Performance Changes based upon Root-Sum-Square method: &,]+>  
    Nominal MTF                 :     0.54403234 p)xI5,b$9  
    Estimated change            :    -0.36299231 ton`ji\^  
    Estimated MTF               :     0.18104003 ^~ $&  
    nX%'o`f  
    Compensator Statistics: tL{~O=  
    Change in back focus: <9a_wGs  
    Minimum            :        -0.000000 ecpUp39\  
    Maximum            :         0.000000 *J5RueUG  
    Mean               :        -0.000000 A'iF'<%  
    Standard Deviation :         0.000000 TZNgtR{q  
    n5*7~K "C  
    Monte Carlo Analysis: - oBas4J  
    Number of trials: 20 + t4m\/y  
    QYXx7h r=$  
    Initial Statistics: Normal Distribution y4We}/-<  
    &>.1%x@R  
      Trial       Criterion        Change x=Jn&4q  
          1     0.42804416    -0.11598818 NqE7[wH  
    Change in Focus                :      -0.400171 ID#qKFFW  
          2     0.54384387    -0.00018847 cu!bg+,zl  
    Change in Focus                :       1.018470 OB^?cA>  
          3     0.44510003    -0.09893230 tkqBCKpDa  
    Change in Focus                :      -0.601922 3}{5 X'  
          4     0.18154684    -0.36248550 /(ju  
    Change in Focus                :       0.920681 EZQ+HECpK  
          5     0.28665820    -0.25737414 2%C5P0;QX  
    Change in Focus                :       1.253875 =v$s+`cP  
          6     0.21263372    -0.33139862 Ej09RO"pB  
    Change in Focus                :      -0.903878 g{)H" 8L  
          7     0.40051424    -0.14351809 3H#/u! W  
    Change in Focus                :      -1.354815 :*:fu n  
          8     0.48754161    -0.05649072 }lUpC}aq_  
    Change in Focus                :       0.215922 Ny,A#-?  
          9     0.40357468    -0.14045766 0nq}SH  
    Change in Focus                :       0.281783 ZQ-`l:G  
         10     0.26315315    -0.28087919 1idjX"'  
    Change in Focus                :      -1.048393 >"g<-!p@  
         11     0.26120585    -0.28282649 wU)5Evp[  
    Change in Focus                :       1.017611 &9w%n  
         12     0.24033815    -0.30369419 L_1_y, 0N  
    Change in Focus                :      -0.109292 Po11EZa$a  
         13     0.37164046    -0.17239188 |4> r"  
    Change in Focus                :      -0.692430 w+q;dc8  
         14     0.48597489    -0.05805744 m2q;^o:J  
    Change in Focus                :      -0.662040 fwv T2G4  
         15     0.21462327    -0.32940907 *R\/#Y|  
    Change in Focus                :       1.611296 C1B3VG  
         16     0.43378226    -0.11025008 gq_7_Y/  
    Change in Focus                :      -0.640081 QC5f:BwM  
         17     0.39321881    -0.15081353 GHC?Tp   
    Change in Focus                :       0.914906 (&S[R{=^j  
         18     0.20692530    -0.33710703 P,;b'-5C  
    Change in Focus                :       0.801607 4:eq{n  
         19     0.51374068    -0.03029165 G q:4rG|  
    Change in Focus                :       0.947293 ddq 1NW  
         20     0.38013374    -0.16389860 ciGpluQF  
    Change in Focus                :       0.667010 4IP\iw#w  
    kH8$nkeev  
    Number of traceable Monte Carlo files generated: 20 m7wc)"`t  
    {_toh/8)r  
    Nominal     0.54403234 r>:L$_]L  
    Best        0.54384387    Trial     2 UG"6RW @  
    Worst       0.18154684    Trial     4 ]AZ\5C-J  
    Mean        0.35770970 2u*h*/  
    Std Dev     0.11156454 PMN2VzE4{  
    J={OOj  
    Bw]L2=d  
    Compensator Statistics: O`[iz/7m  
    Change in back focus:  @6YBK+"  
    Minimum            :        -1.354815 ZA_zKJ[[7  
    Maximum            :         1.611296 %V<F<  
    Mean               :         0.161872 xngeV_xc2  
    Standard Deviation :         0.869664 w{e3U7;  
    : >wQwf  
    90% >       0.20977951               Fi?Q 4b  
    80% >       0.22748071               VU`z|nBW@  
    50% >       0.38667627               4)odFq:  
    20% >       0.46553746               eN| HJ=  
    10% >       0.50064115                k99gjL`  
    9!xD~(Kr  
    End of Run. 6}i&6@Snq?  
    >^H'ZYzw  
    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 \at-"[.  
    <nw <v9Z  
    (o*e<y,}W  
    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 ]D ?# \|  
    qJ X+[PJ  
    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                 -GDV[Bg  
    80% >       0.22748071                 .8T\Nr\~2  
    50% >       0.38667627                 Z7/vrME6  
    20% >       0.46553746                 _&; ZmNNhc  
    10% >       0.50064115 YW8K $W  
    [^?13xMb  
    最后这个数值是MTF值呢，还是MTF的公差？ :b<-[8d&  
    "xD}6(NL(r  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   U;x1}eFT  
    0(Y%,q  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : dj3|f{kg{  
    90% >       0.20977951                 kX igX-  
    80% >       0.22748071                 6e,Apj 0  
    50% >       0.38667627                 nARxn#<+  
    20% >       0.46553746                 'n>K^rA  
    10% >       0.50064115 ?x:m;z/  
    ....... ~q{\;  
    %'$f ?y  
    \^yXc*C  
    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   xf'LR[M  
    Mode                : Sensitivities Dq|GQdZ>o  
    Sampling            : 2 B@d1xjp)']  
    Nominal Criterion   : 0.54403234 E\ tL   
    Test Wavelength     : 0.6328 ^Fn%K].X  
    Hyf"iYv+  
    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？ <&`:&7  
    f#1/}Hq/I  
    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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