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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 `c^ _5:euX  
    Ds4n>V,o  
    :xitV]1.   
    S{7*uK3$  
    然后添加了默认公差分析，基本没变 }+K SZ,  
    m L#-U)?F  
    NGD?.^ (G  
    bE-{ U/;  
    然后运行分析的结果如下： ?u/Uov@rD  
    P;D)5yP092  
    Analysis of Tolerances tN&x6O+@  
    / vI sX3v  
    File : E:\光学设计资料\zemax练习\f500.ZMX !7MC[z(|N  
    Title: #>+O=YO  
    Date : TUE JUN 21 2011 Np4';H  
     =,q,W$-  
    Units are Millimeters. -hav/7g  
    All changes are computed using linear differences. @B;2z_Y!l  
    =.9L/74@  
    Paraxial Focus compensation only. B w1ir  
    ;iJ*.wVq  
    WARNING: Solves should be removed prior to tolerancing. 6Y^UC2TBs  
    !/W[6'M#p  
    Mnemonics: a"^0;a  
    TFRN: Tolerance on curvature in fringes. &ah!g!o3  
    TTHI: Tolerance on thickness. :-B,Q3d  
    TSDX: Tolerance on surface decentering in x. QMoh<[3qu  
    TSDY: Tolerance on surface decentering in y. zQJ9V\0  
    TSTX: Tolerance on surface tilt in x (degrees). Az29?|e  
    TSTY: Tolerance on surface tilt in y (degrees). pqmS w  
    TIRR: Tolerance on irregularity (fringes). RF/I*5  
    TIND: Tolerance on Nd index of refraction. .lVC>UT  
    TEDX: Tolerance on element decentering in x. `+_UG^aeW  
    TEDY: Tolerance on element decentering in y. -POV#1s  
    TETX: Tolerance on element tilt in x (degrees). \2(Uqf#_  
    TETY: Tolerance on element tilt in y (degrees). A`Vz5WB  
    vd Fy}#X  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. R}MdBE  
    .4c*  _$  
    WARNING: Boundary constraints on compensators will be ignored. 1 "'t5?XW  
    GAONgz|ZI  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 3n;UXYJ%  
    Mode                : Sensitivities ~1&%,$fZ  
    Sampling            : 2 1Zc1CUMG  
    Nominal Criterion   : 0.54403234 >p4#AfGF  
    Test Wavelength     : 0.6328 HS3] 8nJW  
    x8i;uH\8  
    n?vw|'(}  
    Fields: XY Symmetric Angle in degrees +cQGX5 K  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY q_eGY&M  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ~1xln?Q  
    0d!1;jy,T  
    Sensitivity Analysis: m\>531&  
    tu}AJ  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| h#Cq-^D#~  
    Type                      Value      Criterion        Change          Value      Criterion        Change ~kUdHne (  
    Fringe tolerance on surface 1 R)% Jr.U  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 EoM}Co  
    Change in Focus                :      -0.000000                            0.000000 tZlz0BY!  
    Fringe tolerance on surface 2 f/t1@d!  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 <11pk  
    Change in Focus                :       0.000000                            0.000000 va \ 5  
    Fringe tolerance on surface 3 c,a+u  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 qkB)CY7  
    Change in Focus                :      -0.000000                            0.000000 ?;!d5Xuu  
    Thickness tolerance on surface 1 ~^*IP1.3  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 nQ4s  
    Change in Focus                :       0.000000                            0.000000 9 p6QNDp  
    Thickness tolerance on surface 2 / /63?s+  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 x&qC~F*QR%  
    Change in Focus                :       0.000000                           -0.000000 Fy!u xT-\  
    Decenter X tolerance on surfaces 1 through 3 Mf)0Y~_:R#  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 U$o\?4  
    Change in Focus                :       0.000000                            0.000000 7Io]2)V  
    Decenter Y tolerance on surfaces 1 through 3 16"eyt>  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 / sI0{  
    Change in Focus                :       0.000000                            0.000000 >vE1,JD)w  
    Tilt X tolerance on surfaces 1 through 3 (degrees) bl. y4  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 EsR_J/:Qe  
    Change in Focus                :       0.000000                            0.000000 rb_ cm  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) xBH`=e <  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 S2nF13u  
    Change in Focus                :       0.000000                            0.000000 u4QPO:,a4  
    Decenter X tolerance on surface 1 4naL2 Y!  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ,c#IxB/0  
    Change in Focus                :       0.000000                            0.000000 $Lpt2:.((  
    Decenter Y tolerance on surface 1 k$`~,LJp  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 L~N<<8?\   
    Change in Focus                :       0.000000                            0.000000 ]$[J_f*x  
    Tilt X tolerance on surface (degrees) 1 X;JptF^  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 g3~e#vdz  
    Change in Focus                :       0.000000                            0.000000 9Z}Y2:l'  
    Tilt Y tolerance on surface (degrees) 1 4qq+7B  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 jbx@ty  
    Change in Focus                :       0.000000                            0.000000 K5-wuD1  
    Decenter X tolerance on surface 2 $_s"16s  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 fD1J@57  
    Change in Focus                :       0.000000                            0.000000 @QiuCB  
    Decenter Y tolerance on surface 2 P_11N9C  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .nCF`5T!  
    Change in Focus                :       0.000000                            0.000000 s5 ? 1w   
    Tilt X tolerance on surface (degrees) 2 PLDg'4DMg  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 j:'sbU  
    Change in Focus                :       0.000000                            0.000000 SP][xdN7  
    Tilt Y tolerance on surface (degrees) 2 f\CJ |tKX  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ER0nrTlB<  
    Change in Focus                :       0.000000                            0.000000 rlSar$  
    Decenter X tolerance on surface 3 ^Glmg}>q  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 sE87}Lz  
    Change in Focus                :       0.000000                            0.000000 |^jl^oW  
    Decenter Y tolerance on surface 3 0ut/ ')[  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ^`ah\L  
    Change in Focus                :       0.000000                            0.000000 $$7Mq*a>  
    Tilt X tolerance on surface (degrees) 3 ]`%}Q  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ` #Qlr+X  
    Change in Focus                :       0.000000                            0.000000 {+~}iF<%  
    Tilt Y tolerance on surface (degrees) 3 FncK#hZ.  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 LQ T^1|nq  
    Change in Focus                :       0.000000                            0.000000 po@=$HK  
    Irregularity of surface 1 in fringes < GoUth.#  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 QkbXm[K.Z  
    Change in Focus                :       0.000000                            0.000000 HGqT"N Jr  
    Irregularity of surface 2 in fringes 1} 1.5[4d  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ?@"F\Bv<h  
    Change in Focus                :       0.000000                            0.000000 !d Ns3d  
    Irregularity of surface 3 in fringes QcBuUFf!c  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 H_gY)m  
    Change in Focus                :       0.000000                            0.000000 m$^Wyk}  
    Index tolerance on surface 1 _ ;baZ-  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 5 [{l9  
    Change in Focus                :       0.000000                            0.000000 r;}%} /IX  
    Index tolerance on surface 2 P|,@En 1!  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 $#R@x.=  
    Change in Focus                :       0.000000                           -0.000000  + ]I7]  
    #- S%aeB  
    Worst offenders: gA 0:qEL\  
    Type                      Value      Criterion        Change )C^ZzmB  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 .Cq'D.  
    TSTY   2             0.20000000     0.35349910    -0.19053324 R42+^'af  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 U .?N  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ] %A mX-U  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 aLZza"W  
    TSTY   1             0.20000000     0.42678383    -0.11724851 .Jk[thyU  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 !S6zC >  
    TSTX   1             0.20000000     0.42678383    -0.11724851 t>nx#ErS  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 >bQ'*!  
    TSTY   3             0.20000000     0.42861670    -0.11541563 1/b5i8I2 v  
    Q<4Sd:P`"  
    Estimated Performance Changes based upon Root-Sum-Square method: fTb&k;'LR<  
    Nominal MTF                 :     0.54403234 D#VUx9kugv  
    Estimated change            :    -0.36299231 $oF0[}S  
    Estimated MTF               :     0.18104003 `M0m`Up  
    8YroEX[5l  
    Compensator Statistics: "^/3?W>  
    Change in back focus: sw<GlF"  
    Minimum            :        -0.000000 (^h2 'uB  
    Maximum            :         0.000000 ft |W  
    Mean               :        -0.000000 nPlg5&E  
    Standard Deviation :         0.000000 Y3%_IwSJ|  
    Jz"Yb  
    Monte Carlo Analysis: 1 Hw%DJ  
    Number of trials: 20 0?@;zTE0  
    Y!!w*G9b  
    Initial Statistics: Normal Distribution 2G=prS`s  
    ck0K^o v  
      Trial       Criterion        Change W(~7e?fO  
          1     0.42804416    -0.11598818 6uNWL `v  
    Change in Focus                :      -0.400171 bF_SD\/  
          2     0.54384387    -0.00018847 "{TVd>9_  
    Change in Focus                :       1.018470 @\ udaZc  
          3     0.44510003    -0.09893230 JDbRv'F:(  
    Change in Focus                :      -0.601922 ~w Ekbq=  
          4     0.18154684    -0.36248550 Epo/}y  
    Change in Focus                :       0.920681 Fa ]|Y  
          5     0.28665820    -0.25737414 pNt,RRoR  
    Change in Focus                :       1.253875 yRd[ $p  
          6     0.21263372    -0.33139862 MS7rD%(,'  
    Change in Focus                :      -0.903878 "pRi1Y5)l  
          7     0.40051424    -0.14351809 =}F}XSvXH  
    Change in Focus                :      -1.354815 _+B{n^ {  
          8     0.48754161    -0.05649072 f2*e&+LjTP  
    Change in Focus                :       0.215922 Qs\m"yx  
          9     0.40357468    -0.14045766 LH_VdLds  
    Change in Focus                :       0.281783 &/+LY_r'<I  
         10     0.26315315    -0.28087919 H6o_*Y  
    Change in Focus                :      -1.048393 ;W~H|M  
         11     0.26120585    -0.28282649 i#4}xvi  
    Change in Focus                :       1.017611 gUa-6@  
         12     0.24033815    -0.30369419 Z'!Ii+'6  
    Change in Focus                :      -0.109292 $?Dcp^  
         13     0.37164046    -0.17239188 L!| `IK  
    Change in Focus                :      -0.692430 obzdH:S  
         14     0.48597489    -0.05805744 uT#4"G9A[  
    Change in Focus                :      -0.662040 %]"eN{Uvn  
         15     0.21462327    -0.32940907 >f\$~cp  
    Change in Focus                :       1.611296 Rz03he  
         16     0.43378226    -0.11025008 UlNx5l+k  
    Change in Focus                :      -0.640081 d?6\  
         17     0.39321881    -0.15081353 h/s8".\  
    Change in Focus                :       0.914906 L9Z\|L5  
         18     0.20692530    -0.33710703 xI>HY9i )  
    Change in Focus                :       0.801607 eeVzOq(  
         19     0.51374068    -0.03029165 qh~$AJ9sB  
    Change in Focus                :       0.947293 s#BSZP  
         20     0.38013374    -0.16389860 OCN:{  
    Change in Focus                :       0.667010 +T8h jOkC  
    mb GL)NI  
    Number of traceable Monte Carlo files generated: 20 >1*Dg?/=S  
    '/U%-/@  
    Nominal     0.54403234 # A#,]XP  
    Best        0.54384387    Trial     2 KFhnv`a.0  
    Worst       0.18154684    Trial     4 nN'>>'@>  
    Mean        0.35770970 4R}$P1 E  
    Std Dev     0.11156454 &iTTal.6  
    boeIO\2}P0  
    -IE=?23Do?  
    Compensator Statistics: |-Q="7b%  
    Change in back focus: w678  
    Minimum            :        -1.354815 W.sH  
    Maximum            :         1.611296 b O9PpOk+z  
    Mean               :         0.161872 {36QZV*P  
    Standard Deviation :         0.869664 Dzr(Fb  
    Bk;/>gD  
    90% >       0.20977951               os[i  
    80% >       0.22748071               jBr3Ay@<  
    50% >       0.38667627               k &6$S9  
    20% >       0.46553746               =`EVg>+^  
    10% >       0.50064115                ]N^>>k  
    mV;)V8'  
    End of Run. ' JAcN@q~z  
    Z}`A'#!  
    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 =<.h.n  
    fO{'$?K  
    G\C>fwrP_  
    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 z^Y4:^L~I  
    ,e@707d`\  
    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                 x0ICpt{;  
    80% >       0.22748071                 _Bq[c  
    50% >       0.38667627                 U,tWLX$@  
    20% >       0.46553746                 X@^"@  
    10% >       0.50064115 q":0\ar&QT  
    jB0ED0)wX  
    最后这个数值是MTF值呢，还是MTF的公差？ <lf6gb  
    :=2l1Y[-G  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   .WpvDDUK3  
    r=:o$e  
    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  : aIW W[xZ  
    90% >       0.20977951                 {fAj*,pzl  
    80% >       0.22748071                 *m 9,_~t  
    50% >       0.38667627                 u@eKh3!  
    20% >       0.46553746                 - |j4u#z  
    10% >       0.50064115 2[Q/|D}}|  
    ....... GPVqt"TY  
    [Csv/  
    +\@WOs  
    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   Bk9? =  
    Mode                : Sensitivities \"^.>+  
    Sampling            : 2 T($6L7 j9  
    Nominal Criterion   : 0.54403234 L4C_qb k;:  
    Test Wavelength     : 0.6328 FELTmQUV  
    sHi *\  
    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？ n'-?CMH`  
    Q+]9Glz9  
    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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