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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 !ae@g q'  
    J3$`bK6F6  
    M$! 0ikh  
    >x!N@G  
    然后添加了默认公差分析，基本没变 8 eh C^Cg  
    lFc3 5  
    V#3VRh  
    "T~Ps$  
    然后运行分析的结果如下： Rw$ @%o%  
    qIb(uF@l"  
    Analysis of Tolerances &<tji8Dj  
    /Zm@.%.  
    File : E:\光学设计资料\zemax练习\f500.ZMX dW:  
    Title: D+ jk0*bJ  
    Date : TUE JUN 21 2011 0;k3  
    0&5}[9?V'  
    Units are Millimeters. 'JkK0a2D  
    All changes are computed using linear differences. d%]7:  
    R^PQ`$W 'R  
    Paraxial Focus compensation only. ~_S`zzcZy4  
    =#y&xWxL  
    WARNING: Solves should be removed prior to tolerancing. |/p ^e  
    rbP.N ?YU%  
    Mnemonics: (TnYUyFP`  
    TFRN: Tolerance on curvature in fringes. "QiUuD=  
    TTHI: Tolerance on thickness. *&5G+d2  
    TSDX: Tolerance on surface decentering in x. sM?DNE^BvW  
    TSDY: Tolerance on surface decentering in y. `bH Eu"(,  
    TSTX: Tolerance on surface tilt in x (degrees). xmVK{Q YT$  
    TSTY: Tolerance on surface tilt in y (degrees). JBU qZ  
    TIRR: Tolerance on irregularity (fringes). #m8Oy|Y9`  
    TIND: Tolerance on Nd index of refraction. *qpmI9m  
    TEDX: Tolerance on element decentering in x. B\<zU  
    TEDY: Tolerance on element decentering in y. rH-_L&  
    TETX: Tolerance on element tilt in x (degrees). /CX<k gz@  
    TETY: Tolerance on element tilt in y (degrees). 'i`;Frmg  
    +x4o#N  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. '4O1Y0K  
    %ecg19~L/}  
    WARNING: Boundary constraints on compensators will be ignored. PDGh\Y[AK,  
    'etCIl3  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ;)cl Cm46  
    Mode                : Sensitivities ;zh|*F>  
    Sampling            : 2 +VU,U`W  
    Nominal Criterion   : 0.54403234 fE^rTUtn  
    Test Wavelength     : 0.6328 {8JJ$_  
    }O!LTD  
    zL7+HY* 3o  
    Fields: XY Symmetric Angle in degrees hVR=g!e#X  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY xQ$*K]VP  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 wk-ziw  
    8E$KR:/:4  
    Sensitivity Analysis: T> 1E  
    7H./o Vl  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| =o5hD,>e  
    Type                      Value      Criterion        Change          Value      Criterion        Change T=>&`aZH  
    Fringe tolerance on surface 1 3S <5s}  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Ag?@fuk$J  
    Change in Focus                :      -0.000000                            0.000000 2I#fwsb  
    Fringe tolerance on surface 2 Ct.Q)p-wn  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 |yqx ]  
    Change in Focus                :       0.000000                            0.000000 -5E%f|U  
    Fringe tolerance on surface 3 YZmD:P  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 5[;p<GqGN  
    Change in Focus                :      -0.000000                            0.000000 Nf3Kz#!B  
    Thickness tolerance on surface 1 .@xwl}o$OL  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 M)-+j{<  
    Change in Focus                :       0.000000                            0.000000 fe&K2C%bm  
    Thickness tolerance on surface 2 9]d$G$Kv9  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 OcIJT1  
    Change in Focus                :       0.000000                           -0.000000 1UmV &  
    Decenter X tolerance on surfaces 1 through 3 +]I7)  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ig S.U  
    Change in Focus                :       0.000000                            0.000000 fxyPh  
    Decenter Y tolerance on surfaces 1 through 3 Z*`CK^^~  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 !d"J,.)  
    Change in Focus                :       0.000000                            0.000000 ]Nm_<%lT  
    Tilt X tolerance on surfaces 1 through 3 (degrees) bBg?x 4bu  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 <0Q`:'\.>  
    Change in Focus                :       0.000000                            0.000000 z3>}(+  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) :%;K`w  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 =f{r+'[;^  
    Change in Focus                :       0.000000                            0.000000 7gPkg63  
    Decenter X tolerance on surface 1 #&Biu }4D  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 18|H  
    Change in Focus                :       0.000000                            0.000000 N{E >R&,q  
    Decenter Y tolerance on surface 1 >JnEhVRQJ9  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 I`FH^=  
    Change in Focus                :       0.000000                            0.000000 9jJ&QACn  
    Tilt X tolerance on surface (degrees) 1 f}#pKsX.  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 h-#Glse<  
    Change in Focus                :       0.000000                            0.000000 3hb1^HNT  
    Tilt Y tolerance on surface (degrees) 1 dG6Mo76  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 |-2,k#|  
    Change in Focus                :       0.000000                            0.000000 #  ,GpZ  
    Decenter X tolerance on surface 2 iPI6 _h  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 *mq+w&  
    Change in Focus                :       0.000000                            0.000000 a0y;c@pkO  
    Decenter Y tolerance on surface 2 22(0Jb\_  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 [x,_0-_  
    Change in Focus                :       0.000000                            0.000000 7GE.>h5  
    Tilt X tolerance on surface (degrees) 2 y%3Yr?]  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 |'1[\<MM3  
    Change in Focus                :       0.000000                            0.000000 xS*f{5Hr8  
    Tilt Y tolerance on surface (degrees) 2 {3`9A7bG  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 8 =J6{{E  
    Change in Focus                :       0.000000                            0.000000 /Nb&e  
    Decenter X tolerance on surface 3 orEwP/L:  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 /sC$;l  
    Change in Focus                :       0.000000                            0.000000 F) < f8F  
    Decenter Y tolerance on surface 3 [4sbOl5yZ  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 2h u;N  
    Change in Focus                :       0.000000                            0.000000 @cSz!E}  
    Tilt X tolerance on surface (degrees) 3 V,{ydxfB  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 U%j=)VD ])  
    Change in Focus                :       0.000000                            0.000000 :`oYD  
    Tilt Y tolerance on surface (degrees) 3 @[.%A;E4  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 64`V+Hd  
    Change in Focus                :       0.000000                            0.000000 [V}I34UN  
    Irregularity of surface 1 in fringes Hza{"I*^  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 =U3 !D;XP  
    Change in Focus                :       0.000000                            0.000000 H@5:x8  
    Irregularity of surface 2 in fringes -F@Rpfrj_#  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 c7P"1  
    Change in Focus                :       0.000000                            0.000000 0SA  c1  
    Irregularity of surface 3 in fringes p@>_1A}qh_  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 V$<og  
    Change in Focus                :       0.000000                            0.000000 d];E99}  
    Index tolerance on surface 1 :] {+ 3A  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Cc/?-0a2!  
    Change in Focus                :       0.000000                            0.000000 |cUlXg=  
    Index tolerance on surface 2 H?UmHww E  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 LW0't} z  
    Change in Focus                :       0.000000                           -0.000000 !x|OgvJ  
    ;R 'OdQ$o  
    Worst offenders: j<wWPv  
    Type                      Value      Criterion        Change cm]8m_!  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 P+,\x&Vr  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Y7]N.G3,]  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Bk~WHg>@G  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Ah) _mxK  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 )m \}ITf  
    TSTY   1             0.20000000     0.42678383    -0.11724851 X=mzo\Aos  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 x gnt)&7T  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Xn9TQ"[4  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 8%>  Ls  
    TSTY   3             0.20000000     0.42861670    -0.11541563 _`*x}  
    ?VO*s-G:J  
    Estimated Performance Changes based upon Root-Sum-Square method: wp$C J09f*  
    Nominal MTF                 :     0.54403234 *ZF7m_8u{  
    Estimated change            :    -0.36299231 L]9uY  
    Estimated MTF               :     0.18104003 T&X*[kP  
    Quc9lL  
    Compensator Statistics: cAV9.VS<L  
    Change in back focus: a[[u>oHyd  
    Minimum            :        -0.000000 8yA :C  
    Maximum            :         0.000000 v-2.OS<o  
    Mean               :        -0.000000 h 5t,5e}  
    Standard Deviation :         0.000000 P%g[!9 '  
    fp|b@  
    Monte Carlo Analysis: 8'@pX<  
    Number of trials: 20 +#A >[,U  
    -Q<3Q_  
    Initial Statistics: Normal Distribution ?)'j;1_=E3  
    I[WW1P5  
      Trial       Criterion        Change a UAPh  
          1     0.42804416    -0.11598818 #4Xe zj,g*  
    Change in Focus                :      -0.400171 G@BF<e{  
          2     0.54384387    -0.00018847 H&6lQ30/)  
    Change in Focus                :       1.018470 z2A7:[  
          3     0.44510003    -0.09893230 wJ/k\  
    Change in Focus                :      -0.601922 n$F&gx'^  
          4     0.18154684    -0.36248550 IM7k\  
    Change in Focus                :       0.920681 w%GEOIj}  
          5     0.28665820    -0.25737414 FzXVNUMP  
    Change in Focus                :       1.253875 =YR/X@&  
          6     0.21263372    -0.33139862 7-nwfp&|$  
    Change in Focus                :      -0.903878 `LEk/b1(P  
          7     0.40051424    -0.14351809 -A[iTI"  
    Change in Focus                :      -1.354815 i:ZpAo+Z{  
          8     0.48754161    -0.05649072 xoA\^AA  
    Change in Focus                :       0.215922 yOxJx7uD  
          9     0.40357468    -0.14045766 O\q|b#q}/  
    Change in Focus                :       0.281783 V+W,# 5  
         10     0.26315315    -0.28087919 X0* y8"  
    Change in Focus                :      -1.048393 e(@YBQ/Z  
         11     0.26120585    -0.28282649 XuVbi=pN.2  
    Change in Focus                :       1.017611 bT@3fuL4  
         12     0.24033815    -0.30369419 s,\!@[N  
    Change in Focus                :      -0.109292 dUk^DI,:l  
         13     0.37164046    -0.17239188 aqK<}jy  
    Change in Focus                :      -0.692430 =.#*MYB.l  
         14     0.48597489    -0.05805744 w3a`G|  
    Change in Focus                :      -0.662040 24}r;=U  
         15     0.21462327    -0.32940907 J'sVT{@GS  
    Change in Focus                :       1.611296 .\7R/cP}{A  
         16     0.43378226    -0.11025008 _1VtVfiZ{  
    Change in Focus                :      -0.640081 D[x0sly  
         17     0.39321881    -0.15081353 HWi0m/J  
    Change in Focus                :       0.914906 _8)9I?jH  
         18     0.20692530    -0.33710703 ^PMP2\JQA  
    Change in Focus                :       0.801607 N5Eb.a9S  
         19     0.51374068    -0.03029165 sF :3|Yy0  
    Change in Focus                :       0.947293 | y\B*P  
         20     0.38013374    -0.16389860 l 'fUa  
    Change in Focus                :       0.667010 vZ\~+qV,A  
    Ratg!l|'-  
    Number of traceable Monte Carlo files generated: 20 %u-l6<w# R  
    *6cP-Vzd  
    Nominal     0.54403234 40<ifz[7  
    Best        0.54384387    Trial     2 {n2mh%I  
    Worst       0.18154684    Trial     4 M;ac U~J  
    Mean        0.35770970 we9R4 *j  
    Std Dev     0.11156454 2_6x2Ia4  
    '=EaZ>=  
     )f>s\T  
    Compensator Statistics: f*04=R?w7>  
    Change in back focus: V/j+Z1ZW  
    Minimum            :        -1.354815 ]xBQ7Xqf|  
    Maximum            :         1.611296 8QV+DDZx  
    Mean               :         0.161872 7Co }4  
    Standard Deviation :         0.869664 -z)I;R  
    /m%i"kki  
    90% >       0.20977951               D0/ \  
    80% >       0.22748071               |d?0ZA:z  
    50% >       0.38667627               ,~w)~fMb8  
    20% >       0.46553746               C S"2Sd 1`  
    10% >       0.50064115                HA&][%^  
    ymT&[+V  
    End of Run. a]|P rjPI  
    sNZ{OD+  
    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 @5K/z<p%  
    ;>{B K,  
    !run3ip`Z  
    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 =ltT6of@o  
    r5t C  
    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                 oY{L0B[  
    80% >       0.22748071                 |{udd~oE&  
    50% >       0.38667627                 .I_Mmaq;i  
    20% >       0.46553746                 MgyV {`  
    10% >       0.50064115 C qOvVv  
    U<QO@5  
    最后这个数值是MTF值呢，还是MTF的公差？ E Mq P  
    >J,Rx!fq3  
    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？？？   1Ys6CJ#  
    i_8v >F  
    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  : CYkU-  
    90% >       0.20977951                 `X;'*E]e  
    80% >       0.22748071                 N>a. dYXr  
    50% >       0.38667627                 Tnd)4}2 p  
    20% >       0.46553746                 <V?csx/eRd  
    10% >       0.50064115 lQ5d.}O&  
    ....... /?(\6Z_A  
    R9 +0ZoS  
    )I&,kH)+  
    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   )s-[d_g  
    Mode                : Sensitivities FqWW[Bgd  
    Sampling            : 2  m[>pv1o  
    Nominal Criterion   : 0.54403234 %2q0lFdcM  
    Test Wavelength     : 0.6328 ^pc?oDPSg  
    |!Uul0O  
    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？ L\cb Y6b  
    5$PDA*]9  
    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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