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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 []3}(8yxGb  
    +mOtYf W  
    T>%ny\?tHW  
    GiwA$^Hg\  
    然后添加了默认公差分析，基本没变 P2JRsZ.  
    X@q1;J  
    =?Md&%j  
    qML*Kwg  
    然后运行分析的结果如下： Vot+gCZ  
    jF_I4H  
    Analysis of Tolerances pP,bW~rk  
    Z|S7 " ,  
    File : E:\光学设计资料\zemax练习\f500.ZMX F/>Pv q]  
    Title: * .VZ(wX  
    Date : TUE JUN 21 2011 ~RAH -]  
    7O^ S.(  
    Units are Millimeters. T5_Cu9>ax  
    All changes are computed using linear differences. bu&y w~  
    9,eR=M]+:  
    Paraxial Focus compensation only. !QS<;)N@  
    N4jLbnA  
    WARNING: Solves should be removed prior to tolerancing. 'k Z1&_{  
    /-4B)mL  
    Mnemonics: J4#]8!A  
    TFRN: Tolerance on curvature in fringes. S5a<L_  
    TTHI: Tolerance on thickness. rXPx* /C  
    TSDX: Tolerance on surface decentering in x. wT yM9wz&  
    TSDY: Tolerance on surface decentering in y. JW'acD  
    TSTX: Tolerance on surface tilt in x (degrees). a\_,_psK  
    TSTY: Tolerance on surface tilt in y (degrees). #'h CohL  
    TIRR: Tolerance on irregularity (fringes). r!,V_a4n  
    TIND: Tolerance on Nd index of refraction. 3*2pacHpE  
    TEDX: Tolerance on element decentering in x. U/o}{,$A  
    TEDY: Tolerance on element decentering in y. Pp hQa!F$  
    TETX: Tolerance on element tilt in x (degrees). =W*`HV-w  
    TETY: Tolerance on element tilt in y (degrees). Qo *]l_UO;  
    !PIdw~YC  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 53 05N!  
    eJp-s" %  
    WARNING: Boundary constraints on compensators will be ignored. y<d#sv(s  
    w/6@R 4)p  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 'FFc"lqj  
    Mode                : Sensitivities <U pjAuG8  
    Sampling            : 2 Fsj[JE  
    Nominal Criterion   : 0.54403234 3y,?>-  
    Test Wavelength     : 0.6328 Ps\^OJR  
    26K~m@  
    k"{U}Y/}  
    Fields: XY Symmetric Angle in degrees 9(j!#`O7&  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY kq0m^`  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 hz<J8'U  
    Ntiz-qW  
    Sensitivity Analysis: 1tpD|  
    c iX2G  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ,$-PC=Ti(  
    Type                      Value      Criterion        Change          Value      Criterion        Change [F EQ@  
    Fringe tolerance on surface 1 |Wk G='02  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 musxX58%  
    Change in Focus                :      -0.000000                            0.000000 HCK4h DKo}  
    Fringe tolerance on surface 2 {hz :[  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 #KW:OFT  
    Change in Focus                :       0.000000                            0.000000 T<)z2Bi  
    Fringe tolerance on surface 3 (mlc' ]F  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Lai"D[N  
    Change in Focus                :      -0.000000                            0.000000 *Fws]y2t~  
    Thickness tolerance on surface 1 ^&HYnwk  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 0aWb s$FyU  
    Change in Focus                :       0.000000                            0.000000 KL4/"$l]  
    Thickness tolerance on surface 2 1[^d8!U  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 W$S.?[X  
    Change in Focus                :       0.000000                           -0.000000 N<99K!   
    Decenter X tolerance on surfaces 1 through 3 o:<3n,T  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 e_V(G  
    Change in Focus                :       0.000000                            0.000000 =w-H )  
    Decenter Y tolerance on surfaces 1 through 3 >qA&;M  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 'zK*?= ^jk  
    Change in Focus                :       0.000000                            0.000000 |=s3a5sl  
    Tilt X tolerance on surfaces 1 through 3 (degrees) :f;|^(]"  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 J~.kb k  
    Change in Focus                :       0.000000                            0.000000 Ji q[VeLe  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 4+Y5u4 `t  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ez{&Y>n  
    Change in Focus                :       0.000000                            0.000000 t/|^Nt@XT  
    Decenter X tolerance on surface 1 y e'5 A   
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 h# 8b#  
    Change in Focus                :       0.000000                            0.000000 I2'?~Lt  
    Decenter Y tolerance on surface 1 fF%r$`2  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 c&&UT-Z  
    Change in Focus                :       0.000000                            0.000000 &bQ^J%\  
    Tilt X tolerance on surface (degrees) 1 e-mlvi^-  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 4a-wGx#h  
    Change in Focus                :       0.000000                            0.000000 u:ISwAp  
    Tilt Y tolerance on surface (degrees) 1 ^iNR(cwgX  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 0P(}e[~Z  
    Change in Focus                :       0.000000                            0.000000 7~'@m(9e  
    Decenter X tolerance on surface 2 DxHeZQ"LL  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {Hu0  
    Change in Focus                :       0.000000                            0.000000 jLTs1`I/F  
    Decenter Y tolerance on surface 2 t At+5H  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 bxs@_fH  
    Change in Focus                :       0.000000                            0.000000 yFG&Ir  
    Tilt X tolerance on surface (degrees) 2 X*KT=q^?n  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *?{)i~  
    Change in Focus                :       0.000000                            0.000000 M3%< kk-_  
    Tilt Y tolerance on surface (degrees) 2 ']Z8C)tK  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 T[~X~dqwn"  
    Change in Focus                :       0.000000                            0.000000 #'qW?8d}  
    Decenter X tolerance on surface 3 RMXP)[  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 k:sh:G+=$d  
    Change in Focus                :       0.000000                            0.000000 #7{a~-S  
    Decenter Y tolerance on surface 3 N *fN&0r  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 I$$!YMm.N  
    Change in Focus                :       0.000000                            0.000000 c{~*\&  
    Tilt X tolerance on surface (degrees) 3 L6T_&AiL$  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 D$ \ EZ   
    Change in Focus                :       0.000000                            0.000000 `|R{^Sk1o  
    Tilt Y tolerance on surface (degrees) 3 eIJQ|p<v  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 o%:eYl  
    Change in Focus                :       0.000000                            0.000000 x)*[>d2yd  
    Irregularity of surface 1 in fringes v!2`hq O  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 mYCGGwD  
    Change in Focus                :       0.000000                            0.000000 $\H>dm  
    Irregularity of surface 2 in fringes TO<g@u]*  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 d=[ .   
    Change in Focus                :       0.000000                            0.000000 %llG/]q#  
    Irregularity of surface 3 in fringes < javZJ  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Z,*VRuA  
    Change in Focus                :       0.000000                            0.000000 3jeR;N]x  
    Index tolerance on surface 1 >|<6s],v  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 @:}z\qBM  
    Change in Focus                :       0.000000                            0.000000 V;$lgTs|'  
    Index tolerance on surface 2 !T}`h'  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ][3 "xP  
    Change in Focus                :       0.000000                           -0.000000 52oR^ |  
    F XbNmBXF  
    Worst offenders: sB $!X@  
    Type                      Value      Criterion        Change CXa$QSu>  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 so;aN'{6@  
    TSTY   2             0.20000000     0.35349910    -0.19053324 \>+gZc]an  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 =3FXU{"Qi4  
    TSTX   2             0.20000000     0.35349910    -0.19053324 PqfH}d0l  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 `+U-oqs  
    TSTY   1             0.20000000     0.42678383    -0.11724851 8_>R'u[  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 `| fF)kI  
    TSTX   1             0.20000000     0.42678383    -0.11724851 `|gCbs95  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ,W.O*vCA  
    TSTY   3             0.20000000     0.42861670    -0.11541563 D`u{U]  
    T6tJwSS4:  
    Estimated Performance Changes based upon Root-Sum-Square method: m#uutomi0  
    Nominal MTF                 :     0.54403234 H=0Y4 T@)T  
    Estimated change            :    -0.36299231 1Z`zdZs  
    Estimated MTF               :     0.18104003 \!_ >ul  
    &4DWLI  
    Compensator Statistics: qu?D`29  
    Change in back focus: !+i  
    Minimum            :        -0.000000 f+rBIE  
    Maximum            :         0.000000 *h`zV<j  
    Mean               :        -0.000000 W)KV"A3C  
    Standard Deviation :         0.000000 \hg12],#:@  
    ^+-i7`|=  
    Monte Carlo Analysis: \5Hfe;ny-~  
    Number of trials: 20 4]Krx m`8  
    %.]qkGZe#  
    Initial Statistics: Normal Distribution 8kk$:8  
    K1Uur>Pk%  
      Trial       Criterion        Change d35,[  
          1     0.42804416    -0.11598818 S^3I"B  
    Change in Focus                :      -0.400171 zH.7!jeE  
          2     0.54384387    -0.00018847 a4c~ThbI  
    Change in Focus                :       1.018470 }psJ'aiG*  
          3     0.44510003    -0.09893230 nM@S`"  
    Change in Focus                :      -0.601922 'En6h"{  
          4     0.18154684    -0.36248550 F;kNc:X`)  
    Change in Focus                :       0.920681 QHK$2xtq|  
          5     0.28665820    -0.25737414 NI3_wV  
    Change in Focus                :       1.253875 leiP/D6s  
          6     0.21263372    -0.33139862 O>UR\l|+:2  
    Change in Focus                :      -0.903878 <Dl7|M  
          7     0.40051424    -0.14351809 g^=p)h3  
    Change in Focus                :      -1.354815 >=wlS\:"  
          8     0.48754161    -0.05649072 KATt9ox@  
    Change in Focus                :       0.215922 K"eW.$  
          9     0.40357468    -0.14045766 JBp^@j{_  
    Change in Focus                :       0.281783 "Q ^Ck7  
         10     0.26315315    -0.28087919 Po% V%~  
    Change in Focus                :      -1.048393 "+p_{J/P  
         11     0.26120585    -0.28282649 Mc9%s$MT  
    Change in Focus                :       1.017611 9|fg\C  
         12     0.24033815    -0.30369419 %6L{Z*(  
    Change in Focus                :      -0.109292 G;MmD?VJ g  
         13     0.37164046    -0.17239188 =j6f/8   
    Change in Focus                :      -0.692430 !M6*A1g5  
         14     0.48597489    -0.05805744 |.X?IJ`  
    Change in Focus                :      -0.662040 Pr9$( 6MX  
         15     0.21462327    -0.32940907 XB zcbS+  
    Change in Focus                :       1.611296 :A>cf}  
         16     0.43378226    -0.11025008 *zJ}=%)f  
    Change in Focus                :      -0.640081 )bXiw3'A  
         17     0.39321881    -0.15081353 M#UW#+*g!  
    Change in Focus                :       0.914906 ,F]Y,"x:  
         18     0.20692530    -0.33710703 6|L<? X  
    Change in Focus                :       0.801607 5?{a=r9  
         19     0.51374068    -0.03029165 5$/ED3mcK  
    Change in Focus                :       0.947293 m\RU |Z  
         20     0.38013374    -0.16389860 \}Z5}~S  
    Change in Focus                :       0.667010 /{6PwlP5  
    ihdN{Mx<2  
    Number of traceable Monte Carlo files generated: 20 o[X 'We;  
    h${+{1](6  
    Nominal     0.54403234 D:4Iex9$F"  
    Best        0.54384387    Trial     2 OW;]= k/(  
    Worst       0.18154684    Trial     4 oSq4g{xvMH  
    Mean        0.35770970 W{<_gD9  
    Std Dev     0.11156454 _SY4Q s`d  
     R5(<:]  
    VyK[*k yN  
    Compensator Statistics: fYBmW')  
    Change in back focus: {1Z8cV   
    Minimum            :        -1.354815 ~dg7c{o5  
    Maximum            :         1.611296 OrNi<TY>  
    Mean               :         0.161872 2r4owB?  
    Standard Deviation :         0.869664 u_shC"X:  
    jvv3;lWDL.  
    90% >       0.20977951               R7pdwKD  
    80% >       0.22748071               MOi.bHCQJP  
    50% >       0.38667627               d0vn/k2I  
    20% >       0.46553746               /}t>o* x  
    10% >       0.50064115                t"4RGO)jh  
    AwN7/M~'  
    End of Run. K Rs e  
    GgwO>[T  
    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 {}RE;5n\['  
    O eLM*Zi  
    ^E{M[;sF3y  
    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 ~$cz`A  
    w/ &)mm{  
    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                 10.u  
    80% >       0.22748071                 `eZ +Pf".  
    50% >       0.38667627                 R;yi58Be  
    20% >       0.46553746                 .0ov>4,R  
    10% >       0.50064115 ,^Ug[pGG-  
    7 k:w3M  
    最后这个数值是MTF值呢，还是MTF的公差？ R k'5L  
    "p Rr>Fa  
    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？？？   ^lw0} i  
    HV0!G-h  
    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  : cUDo}Yu  
    90% >       0.20977951                 _=g;K+%fb  
    80% >       0.22748071                 GEd JB=  
    50% >       0.38667627                 l2.L h<G  
    20% >       0.46553746                 ;ND)h pD+  
    10% >       0.50064115 6xC$R q  
    ....... sM  _m  
    ", Ge:\TR=  
    -~HyzX\cZB  
    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   4\rwJD<  
    Mode                : Sensitivities HuRq0/"  
    Sampling            : 2 4xl}kmvv  
    Nominal Criterion   : 0.54403234 &X%vp?p  
    Test Wavelength     : 0.6328 qVe&nXo  
    $ KAOJc4<  
    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？ `(Eiu$h6V-  
    =TcT`](o  
    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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