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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 v?F~fRH  
    J~9l+?  
    0&E{[~Pv  
    ]e@'9`G-'  
    然后添加了默认公差分析，基本没变 sc\4.Ux%Q  
    R@-rc|FunJ  
    sqFMO+  
    g|tnYN  
    然后运行分析的结果如下： WBLfxr  
    Ho9 a#9  
    Analysis of Tolerances UaA6  
    kaQn'5  
    File : E:\光学设计资料\zemax练习\f500.ZMX Z6\OkD  
    Title: # kl?ww U  
    Date : TUE JUN 21 2011 ~]a:9Ev*  
    ,d'x]&a  
    Units are Millimeters. f mILkXKz  
    All changes are computed using linear differences. ^5x\cR  
    HWG5Ghu8,)  
    Paraxial Focus compensation only. @2c Gx/1#  
    ;0(|06=  
    WARNING: Solves should be removed prior to tolerancing. (Vnv"= (  
    N '2Nv  
    Mnemonics: V\r!H>  
    TFRN: Tolerance on curvature in fringes. 7'\<\oT  
    TTHI: Tolerance on thickness. yyb8l l?@a  
    TSDX: Tolerance on surface decentering in x. _"%mLH=!8  
    TSDY: Tolerance on surface decentering in y. '+LC.lM  
    TSTX: Tolerance on surface tilt in x (degrees). m~mw1r  
    TSTY: Tolerance on surface tilt in y (degrees). JJ[.K*dO  
    TIRR: Tolerance on irregularity (fringes). . S4Xw2MS  
    TIND: Tolerance on Nd index of refraction. m?VA 1  
    TEDX: Tolerance on element decentering in x. & F\HR  
    TEDY: Tolerance on element decentering in y. =Bu> }$BD  
    TETX: Tolerance on element tilt in x (degrees). MgyV {`  
    TETY: Tolerance on element tilt in y (degrees). C qOvVv  
    U<QO@5  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ?G%C}8a  
    wGD*25M7$  
    WARNING: Boundary constraints on compensators will be ignored. ]E$h7I  
    ")LcB' C  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Ucr$5^ME  
    Mode                : Sensitivities Q{1Q w'+@  
    Sampling            : 2 Ey7SQb  
    Nominal Criterion   : 0.54403234 &6V[@gmD  
    Test Wavelength     : 0.6328 P0,@#M&  
    Y@N-q   
    ( `T;nz  
    Fields: XY Symmetric Angle in degrees #InuN8sI  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ]  }XsP  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 f*U3s N^y  
     _dCdyf  
    Sensitivity Analysis: 1'ts>6b  
    3BHPD;U  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| I~ Q2jg2  
    Type                      Value      Criterion        Change          Value      Criterion        Change C.`C T7  
    Fringe tolerance on surface 1 IJ >qs8  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ^ z!g3  
    Change in Focus                :      -0.000000                            0.000000  1$nlRQi  
    Fringe tolerance on surface 2 W u?A} fH  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ~.\CG'g  
    Change in Focus                :       0.000000                            0.000000 &[QvMh  
    Fringe tolerance on surface 3 ,`kag~bZ  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 p,#t[K  
    Change in Focus                :      -0.000000                            0.000000 +P YX.  
    Thickness tolerance on surface 1 5DB4vh  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 mN+ w,  
    Change in Focus                :       0.000000                            0.000000 /o@6? UH  
    Thickness tolerance on surface 2 Mkc   
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 n$]78\C  
    Change in Focus                :       0.000000                           -0.000000 ;\1/4;m  
    Decenter X tolerance on surfaces 1 through 3 W%Jw\ z=  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 3azyqpwU$  
    Change in Focus                :       0.000000                            0.000000 NPc@;g]d"  
    Decenter Y tolerance on surfaces 1 through 3 0m8mHJ<&  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 cP8g. +  
    Change in Focus                :       0.000000                            0.000000 APye  
    Tilt X tolerance on surfaces 1 through 3 (degrees) [\|`C4@3a  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $#2zxpr,  
    Change in Focus                :       0.000000                            0.000000  rvP Y  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ol^uM .k%_  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 B<^yT@Wc  
    Change in Focus                :       0.000000                            0.000000 Jkf%k3H3I*  
    Decenter X tolerance on surface 1 \0bao<  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 \.!+'2!m  
    Change in Focus                :       0.000000                            0.000000 :'hc&wk`  
    Decenter Y tolerance on surface 1 ~1xfE C/  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 gl.uDO%.  
    Change in Focus                :       0.000000                            0.000000 *GUQz  
    Tilt X tolerance on surface (degrees) 1 | R\PQ/)  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 b3j?@31AD  
    Change in Focus                :       0.000000                            0.000000 wAt|'wP :  
    Tilt Y tolerance on surface (degrees) 1 .5?e)o)  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 u?Pec:3%  
    Change in Focus                :       0.000000                            0.000000 \ B \G=Y  
    Decenter X tolerance on surface 2 (%N=7?  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {S l#z }@s  
    Change in Focus                :       0.000000                            0.000000 7\;4 d4u  
    Decenter Y tolerance on surface 2 st4WjX_Q  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807  Z|t`}lK  
    Change in Focus                :       0.000000                            0.000000 z8VcV*6  
    Tilt X tolerance on surface (degrees) 2 ,1|Qm8O  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 d1[;~)  
    Change in Focus                :       0.000000                            0.000000 $%:=;1Jl  
    Tilt Y tolerance on surface (degrees) 2 ?ZF ~U  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Qk5pRoL_  
    Change in Focus                :       0.000000                            0.000000 :r+BL@9  
    Decenter X tolerance on surface 3 Ka4KsJN  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 GMv.G  
    Change in Focus                :       0.000000                            0.000000 Fy6(N{hql  
    Decenter Y tolerance on surface 3 .5_zh; `  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 4`X]$.  
    Change in Focus                :       0.000000                            0.000000 PH1jN?OEwZ  
    Tilt X tolerance on surface (degrees) 3 o&U'zaj  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ":I@>t{H*  
    Change in Focus                :       0.000000                            0.000000 s@$SM,tnn  
    Tilt Y tolerance on surface (degrees) 3 V7S[rI<<r  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 2h;#BJ))  
    Change in Focus                :       0.000000                            0.000000 uge~*S  
    Irregularity of surface 1 in fringes w %2|Po5  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 )/:j$aq  
    Change in Focus                :       0.000000                            0.000000 L>3-z>u,  
    Irregularity of surface 2 in fringes ~DL-@*&  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 :q>uj5%  
    Change in Focus                :       0.000000                            0.000000 YqQAogy h  
    Irregularity of surface 3 in fringes N9S?c  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Zws[C  
    Change in Focus                :       0.000000                            0.000000 hJc^NU5  
    Index tolerance on surface 1 dEu\}y|  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 a#pM9n~a  
    Change in Focus                :       0.000000                            0.000000 xo GX&^=  
    Index tolerance on surface 2 S%6V(L|  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Z@ dS,M*  
    Change in Focus                :       0.000000                           -0.000000 n/ CP2A  
    kJ_XG;8  
    Worst offenders: >gT QD\k:D  
    Type                      Value      Criterion        Change l0&U7gr  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 AMSn^ 75  
    TSTY   2             0.20000000     0.35349910    -0.19053324 j e;^i,&  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 J|uSj/8  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Fs_zNN  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ^ZD0rp(l  
    TSTY   1             0.20000000     0.42678383    -0.11724851 .  g8WMm  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 6j6P&[  
    TSTX   1             0.20000000     0.42678383    -0.11724851 D/`b ~Yl  
    TSTY   3            -0.20000000     0.42861670    -0.11541563  QUb#84  
    TSTY   3             0.20000000     0.42861670    -0.11541563 4_KRH1  
    1i=p5,|  
    Estimated Performance Changes based upon Root-Sum-Square method: #I-qL/Lm  
    Nominal MTF                 :     0.54403234 6DxT(VU}  
    Estimated change            :    -0.36299231 I AFj_VWC0  
    Estimated MTF               :     0.18104003 +01bjM6F_1  
    5uAUi=XA>S  
    Compensator Statistics: jQ X9KwSP  
    Change in back focus: i}_d&.DbF  
    Minimum            :        -0.000000 UNhM:!A  
    Maximum            :         0.000000 KkPr08  
    Mean               :        -0.000000 +rOfQ'lQ  
    Standard Deviation :         0.000000 z#Cgd-^7.#  
    'iikcf*)C  
    Monte Carlo Analysis: A5 <T7~U  
    Number of trials: 20 "tUc  
    5X}OUn8  
    Initial Statistics: Normal Distribution J]gtgt^   
    pP^"p"<s  
      Trial       Criterion        Change b l]YPx8  
          1     0.42804416    -0.11598818 3BK_$Fy  
    Change in Focus                :      -0.400171 r.10b]b  
          2     0.54384387    -0.00018847 <,+6:NmT  
    Change in Focus                :       1.018470 $E35 W=~)  
          3     0.44510003    -0.09893230 &?0hj@kd~  
    Change in Focus                :      -0.601922 c]3^2Ag,  
          4     0.18154684    -0.36248550 f' &  
    Change in Focus                :       0.920681 &aWY{ ?_  
          5     0.28665820    -0.25737414 qy,X#y'FuE  
    Change in Focus                :       1.253875 Mw{skK>b  
          6     0.21263372    -0.33139862 *rmwTD"  
    Change in Focus                :      -0.903878 W}.p,d  
          7     0.40051424    -0.14351809 BDc "0XH  
    Change in Focus                :      -1.354815 1IeB_t  
          8     0.48754161    -0.05649072 i= s>a;*#  
    Change in Focus                :       0.215922 <^YZ#3~1T  
          9     0.40357468    -0.14045766 Ku<_N]9  
    Change in Focus                :       0.281783 V~ [I /Vi  
         10     0.26315315    -0.28087919 X0zE-h6P  
    Change in Focus                :      -1.048393 ~\~XD+jy"  
         11     0.26120585    -0.28282649 %q5iy0~P  
    Change in Focus                :       1.017611 S$%Y{  
         12     0.24033815    -0.30369419 HH aerc  
    Change in Focus                :      -0.109292 ~8^)[n+)x  
         13     0.37164046    -0.17239188 +Heen3  
    Change in Focus                :      -0.692430 h| ]BA}D  
         14     0.48597489    -0.05805744 M$AQZ')9  
    Change in Focus                :      -0.662040 d +Bz pS@p  
         15     0.21462327    -0.32940907 *l\vqgv.Z  
    Change in Focus                :       1.611296 -E>se8%"  
         16     0.43378226    -0.11025008 Bg0 aLU)[  
    Change in Focus                :      -0.640081 $C?G7Vs  
         17     0.39321881    -0.15081353 ~zA{=|I2  
    Change in Focus                :       0.914906 aFrVP  
         18     0.20692530    -0.33710703 C@q&0\HN  
    Change in Focus                :       0.801607 Co^a$K  
         19     0.51374068    -0.03029165 &m>txzo  
    Change in Focus                :       0.947293 0CS80 pC  
         20     0.38013374    -0.16389860 G9uWn%5r  
    Change in Focus                :       0.667010 wJF Fg :  
    ne\N1`AU  
    Number of traceable Monte Carlo files generated: 20 X>6VucH{\  
    ,wlSNb@'  
    Nominal     0.54403234 tf@x}  
    Best        0.54384387    Trial     2 NurbioFL  
    Worst       0.18154684    Trial     4 M[ZuXH}  
    Mean        0.35770970 )B' U_*  
    Std Dev     0.11156454 ;o0o6pF  
    *tZ#^YG{(  
    -?AaRwZ,  
    Compensator Statistics: m%?b"kxL[  
    Change in back focus: Bt^];DjH  
    Minimum            :        -1.354815 ]0wmvTR  
    Maximum            :         1.611296 K\GIh8L  
    Mean               :         0.161872 .cX,"2;n  
    Standard Deviation :         0.869664 P$|DiiH  
    PX1Scvi  
    90% >       0.20977951               @5# RGM)5^  
    80% >       0.22748071                YErn50L  
    50% >       0.38667627               o ) FjWf;  
    20% >       0.46553746               Q,A`"e#:  
    10% >       0.50064115                +6* .lRA  
    v1j]&3O  
    End of Run. V-(LHv  
    7" wn0 24  
    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 /@bLc1"  
    #2!M+S  
    D|D1`CIM  
    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 (dC<N3  
    It\o b7n  
    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                 5hpb=2  
    80% >       0.22748071                 T[XI  
    50% >       0.38667627                 C({L4O#?o  
    20% >       0.46553746                 _V{WXsOx(  
    10% >       0.50064115 =I/J !}.  
    vfegIoZ  
    最后这个数值是MTF值呢，还是MTF的公差？ 7Hpsmfm  
    xsFWF*HPs  
    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？？？   'EREut,>'  
    #IBBaxOk  
    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  : ;OKQP~^iH2  
    90% >       0.20977951                 d=5D 9' +  
    80% >       0.22748071                 "7<4NV@yQ  
    50% >       0.38667627                 |;_ yAL  
    20% >       0.46553746                 -%N (X8  
    10% >       0.50064115 Qp=uiXs  
    ....... []2GN{m  
    e+6~JbMV  
    gEe}xI  
    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   r"Bf@va  
    Mode                : Sensitivities 1Jd:%+T  
    Sampling            : 2 lR(&Wc\j  
    Nominal Criterion   : 0.54403234 .U3p~M+  
    Test Wavelength     : 0.6328 )5t_tPv  
    L9kP8&&KK  
    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？ r%#qbsN  
    h>/ViB@"W|  
    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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