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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 ILAn2W  
    :8oJG8WH  
    >l AtfN='  
    ihwJBN>(  
    然后添加了默认公差分析，基本没变 4c(Em+ 4  
    A&Aj!#  
    sfr+W-7kx  
    8Vj'&UY  
    然后运行分析的结果如下： Kw?3joy  
    @>VVB{1@,]  
    Analysis of Tolerances p)iEwl}!j  
    /N_:npbJF  
    File : E:\光学设计资料\zemax练习\f500.ZMX UsFn!!+  
    Title: }]mx Kz  
    Date : TUE JUN 21 2011 Kf BT'6t  
    (oX!D(OI  
    Units are Millimeters. M :}u|  
    All changes are computed using linear differences. 2 HQ3G~U  
    aif;h! ?y  
    Paraxial Focus compensation only. qT(6TP  
    h,m 90Hd+  
    WARNING: Solves should be removed prior to tolerancing. 37jxl+  
    0]  
    Mnemonics: Z#H<+S(  
    TFRN: Tolerance on curvature in fringes. 77)WNL/ x  
    TTHI: Tolerance on thickness. +Z|3[#W  
    TSDX: Tolerance on surface decentering in x. ]'(D*4  
    TSDY: Tolerance on surface decentering in y. \|{/.R  
    TSTX: Tolerance on surface tilt in x (degrees). m?<E >-bI  
    TSTY: Tolerance on surface tilt in y (degrees). \z0HHCn'"  
    TIRR: Tolerance on irregularity (fringes). S=mqxIo@m  
    TIND: Tolerance on Nd index of refraction. |0=UZK7%O  
    TEDX: Tolerance on element decentering in x. 1\&j)3mC  
    TEDY: Tolerance on element decentering in y. m:?"|.]  
    TETX: Tolerance on element tilt in x (degrees). kc^,V|Nbq6  
    TETY: Tolerance on element tilt in y (degrees). 3)W zX  
    z.SC^/\o|  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. "hf |7E_  
    w(6n  
    WARNING: Boundary constraints on compensators will be ignored. *|dr-e_j  
    %?PFe}  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm &R%'s1]o  
    Mode                : Sensitivities I!S Eb  
    Sampling            : 2 P$z_A8}  
    Nominal Criterion   : 0.54403234 g5@g_~ g  
    Test Wavelength     : 0.6328 R03 Te gwA  
    :HO5 T  
    m<-ShRr*b  
    Fields: XY Symmetric Angle in degrees MY@&^71i4  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY }LT&BNZj  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Xv-p7$?f  
    Y/FPkH4  
    Sensitivity Analysis: r!2U#rz  
    Q- |Y  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| R{H[< s+n  
    Type                      Value      Criterion        Change          Value      Criterion        Change R2Fjv@Egk  
    Fringe tolerance on surface 1 8#7qHT;cx  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 FzJ7 OE |  
    Change in Focus                :      -0.000000                            0.000000 ;ItH2Lw<&  
    Fringe tolerance on surface 2 CP~ZIIip"  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 LTTMa-]Yy  
    Change in Focus                :       0.000000                            0.000000 ;KlYiu  
    Fringe tolerance on surface 3 aaR& -M@  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 lhGJ/By- -  
    Change in Focus                :      -0.000000                            0.000000 -d\sKc  
    Thickness tolerance on surface 1 nMyl( kF[  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Mqr_w!8d  
    Change in Focus                :       0.000000                            0.000000 gYB!KM *v  
    Thickness tolerance on surface 2 "0An'7'm  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Wb-C0^dTn  
    Change in Focus                :       0.000000                           -0.000000 sE pI)9  
    Decenter X tolerance on surfaces 1 through 3 }4A] x`3  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 RRIh;HhX  
    Change in Focus                :       0.000000                            0.000000 < (xqw<)  
    Decenter Y tolerance on surfaces 1 through 3 0ra'H/>Ly  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 <e2l@@#oy  
    Change in Focus                :       0.000000                            0.000000 _p-e)J$7  
    Tilt X tolerance on surfaces 1 through 3 (degrees) +i&<`ov  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 1[!v{F%]  
    Change in Focus                :       0.000000                            0.000000 q!ZM Wg  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) o.{W_k/n  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 vk92j?  
    Change in Focus                :       0.000000                            0.000000 Ek_5% n  
    Decenter X tolerance on surface 1 l-+=Yk!X  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 C`[<6>&y  
    Change in Focus                :       0.000000                            0.000000 {o}U"b<+Ra  
    Decenter Y tolerance on surface 1 p0Jr{hM  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 O[Vet/^)  
    Change in Focus                :       0.000000                            0.000000 Jb QK$[z"  
    Tilt X tolerance on surface (degrees) 1 8s1nE_3  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 rAH!%~  
    Change in Focus                :       0.000000                            0.000000 C^J<qq &  
    Tilt Y tolerance on surface (degrees) 1 Jka>Er  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 heVk CM :  
    Change in Focus                :       0.000000                            0.000000 g+ c*VmY  
    Decenter X tolerance on surface 2 nkW})LyB\  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 NKu[6J?)  
    Change in Focus                :       0.000000                            0.000000 MCKN.f%lP  
    Decenter Y tolerance on surface 2 7n7Xyb  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 jRJG .hcB5  
    Change in Focus                :       0.000000                            0.000000 YB38K(  
    Tilt X tolerance on surface (degrees) 2 tbFAVGcAM  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 P.Z:`P)  
    Change in Focus                :       0.000000                            0.000000 hNN>Pd~;  
    Tilt Y tolerance on surface (degrees) 2 YOl$sgg}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ?jmP] MM  
    Change in Focus                :       0.000000                            0.000000 \^!;r9z=A  
    Decenter X tolerance on surface 3 lPy|>&Yc  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 H;/do-W[  
    Change in Focus                :       0.000000                            0.000000 Xs0)4U  
    Decenter Y tolerance on surface 3 *~vB6V|1  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 =;Gq:mHi  
    Change in Focus                :       0.000000                            0.000000 XF!L.'zH  
    Tilt X tolerance on surface (degrees) 3 |oY{TQ<<d  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ,md_eGF  
    Change in Focus                :       0.000000                            0.000000 g#5R|| r  
    Tilt Y tolerance on surface (degrees) 3 ?I}RX~Tgg  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 'ygKP6M  
    Change in Focus                :       0.000000                            0.000000 Q{[@n  
    Irregularity of surface 1 in fringes b] 5weS-<  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 daE.y_9y  
    Change in Focus                :       0.000000                            0.000000 $}9jv3>)  
    Irregularity of surface 2 in fringes GX>8B:]o|  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Q5,zs_j  
    Change in Focus                :       0.000000                            0.000000 vqm|D&HU  
    Irregularity of surface 3 in fringes Coi[cfg0  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 {L-^J`> G  
    Change in Focus                :       0.000000                            0.000000 u{sHuVl  
    Index tolerance on surface 1 1djZ5`+  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 1oQw)X  
    Change in Focus                :       0.000000                            0.000000 0AQ azhm  
    Index tolerance on surface 2 )bUnk +_  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ^O07GYF  
    Change in Focus                :       0.000000                           -0.000000 l6  G6H$  
    @{Rb]d?&F?  
    Worst offenders: @8L5 UT  
    Type                      Value      Criterion        Change ] ZV[}7I.  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 CMj =4e  
    TSTY   2             0.20000000     0.35349910    -0.19053324 +A}t_u3<  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 msl.{  
    TSTX   2             0.20000000     0.35349910    -0.19053324 [l}H:%O,  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 aU!}j'5Q  
    TSTY   1             0.20000000     0.42678383    -0.11724851 sscbf  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Q((&Q?Vi  
    TSTX   1             0.20000000     0.42678383    -0.11724851 x~e._k=  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 n7t}G'*Y!^  
    TSTY   3             0.20000000     0.42861670    -0.11541563 qG9a!sj   
    H*=cw<  
    Estimated Performance Changes based upon Root-Sum-Square method: )U&9d  
    Nominal MTF                 :     0.54403234 %e iV^>  
    Estimated change            :    -0.36299231 pN9!  
    Estimated MTF               :     0.18104003 Q]WBH_j  
    ynI e4b  
    Compensator Statistics: <ToS&  
    Change in back focus: qc8Ge\3s  
    Minimum            :        -0.000000 jSI1tW8  
    Maximum            :         0.000000 (?z?/4>7<  
    Mean               :        -0.000000 csP4Oq\g[  
    Standard Deviation :         0.000000 K~L&Z?~|E  
    m$vq %[/#  
    Monte Carlo Analysis: )N.3Q1g-  
    Number of trials: 20 \{h_i FU!  
    "wcaJ;Os  
    Initial Statistics: Normal Distribution +( LH!\{^  
    _^iY;&  
      Trial       Criterion        Change q5f QTV  
          1     0.42804416    -0.11598818 j7}mh  
    Change in Focus                :      -0.400171 j.=:S;  
          2     0.54384387    -0.00018847 6n9/`D!  
    Change in Focus                :       1.018470 9g6$"',H  
          3     0.44510003    -0.09893230 v "l).G?  
    Change in Focus                :      -0.601922 2S8;=x}/  
          4     0.18154684    -0.36248550 }B0[S_mw  
    Change in Focus                :       0.920681 +XWTu!  
          5     0.28665820    -0.25737414 }&0LoW/  
    Change in Focus                :       1.253875 ChiIQWFE  
          6     0.21263372    -0.33139862 fFJ7Y+^  
    Change in Focus                :      -0.903878 tA(oD4H9  
          7     0.40051424    -0.14351809 9\8ektq}Z  
    Change in Focus                :      -1.354815 mERkC,$  
          8     0.48754161    -0.05649072 ZqclmCi  
    Change in Focus                :       0.215922 e$9a9twl  
          9     0.40357468    -0.14045766  a*p|Ij  
    Change in Focus                :       0.281783 Ag8/%a~(  
         10     0.26315315    -0.28087919 A7L;ims7  
    Change in Focus                :      -1.048393 \uZpAV)5  
         11     0.26120585    -0.28282649 /\1'.GR  
    Change in Focus                :       1.017611 rN1]UaT  
         12     0.24033815    -0.30369419 t|U5]$5  
    Change in Focus                :      -0.109292 ?mNB:-Q  
         13     0.37164046    -0.17239188 ilL%  
    Change in Focus                :      -0.692430 h0F=5| B  
         14     0.48597489    -0.05805744 gS FZ>v*6  
    Change in Focus                :      -0.662040 =z. hJu  
         15     0.21462327    -0.32940907 ?`+VWa[,e  
    Change in Focus                :       1.611296 .$\-{)  
         16     0.43378226    -0.11025008 %n$f#Ml_r  
    Change in Focus                :      -0.640081 Kw-<o!~  
         17     0.39321881    -0.15081353 Bz'.7" ":0  
    Change in Focus                :       0.914906 c/$].VG0  
         18     0.20692530    -0.33710703 a;[\nCK  
    Change in Focus                :       0.801607 SPqJ [ F  
         19     0.51374068    -0.03029165 QGN+f)  
    Change in Focus                :       0.947293 7;Ze>"W>  
         20     0.38013374    -0.16389860 &$s:h5HoX  
    Change in Focus                :       0.667010 nmpc<&<<  
    .=:f]fs  
    Number of traceable Monte Carlo files generated: 20 i ;B^I8  
    gdIk%m4  
    Nominal     0.54403234 +.Vh<:?  
    Best        0.54384387    Trial     2 "rMfe>;FJ  
    Worst       0.18154684    Trial     4 `,4yGgD!4  
    Mean        0.35770970 x<I[?GT=  
    Std Dev     0.11156454 OV{v6,>O  
    t,YRM$P  
    g;Ugr8  
    Compensator Statistics: syu/"KY^!  
    Change in back focus: M"*NV(".g  
    Minimum            :        -1.354815 w6Gez~ 8  
    Maximum            :         1.611296 4D&L]eJ  
    Mean               :         0.161872 _#\Nw0{  
    Standard Deviation :         0.869664 $6m@gW]N  
    6wpW!SWD  
    90% >       0.20977951               )q{qWobS0  
    80% >       0.22748071               d5-Q}D,P  
    50% >       0.38667627               ^?{&v19m  
    20% >       0.46553746               Tu-lc)  
    10% >       0.50064115                T[4xt,[a  
    <,$*(dX)(  
    End of Run. QyCrz{/  
    |ufT)+:  
    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 SE*;6&yL  
    |6^a[x3/U  
    _wXT9`|3  
    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 }h`z2%5o  
    |8E~C~d  
    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                 !^Ay !  
    80% >       0.22748071                 xuHP4$<h3  
    50% >       0.38667627                 ~*1Z1aZ  
    20% >       0.46553746                 y}FG5'5$13  
    10% >       0.50064115 Ho}*Bn~ic  
    GR(m+%Vw!  
    最后这个数值是MTF值呢，还是MTF的公差？ {{gd}g  
     %o/@0.w  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   \1-lda  
    |Zn;O6c#L5  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : yWN'va1+$  
    90% >       0.20977951                 p&xj7qwp@F  
    80% >       0.22748071                 %"E!E1_Sv  
    50% >       0.38667627                 3<Z@!ft8  
    20% >       0.46553746                 ^}gZ+!kA  
    10% >       0.50064115 -e51 /lhpd  
    ....... v-F|#4Q=ut  
    0ly6  |:  
    `Lw Z(M-hI  
    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   &` "uKO]  
    Mode                : Sensitivities |f}`uF  
    Sampling            : 2 A,#z_2~  
    Nominal Criterion   : 0.54403234 {Z$]Rj  
    Test Wavelength     : 0.6328 >G0ihhVt  
    F9IPA%  
    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？ ;UQ&yj%x  
    k a8=`cn  
    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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