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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 JYrY[',u  
    uch>AuF:  
    ZAJp%   
    -+7uy.@cS  
    然后添加了默认公差分析，基本没变 A a= u+  
    L7= Q<D<  
    Sr&515  
    yz-,)GB6  
    然后运行分析的结果如下： VA"*6F   
    q}/WQ]p} <  
    Analysis of Tolerances M t*6}Cl  
    /,MJq#@K  
    File : E:\光学设计资料\zemax练习\f500.ZMX zaFt*~@X  
    Title: Kx. X7R  
    Date : TUE JUN 21 2011 .s<*'B7&  
    9Ro6fjjE  
    Units are Millimeters. yfj K2  
    All changes are computed using linear differences. %'xb%`t  
    v~T7`  
    Paraxial Focus compensation only. Vs)--t  
    S@}1t4Ls:  
    WARNING: Solves should be removed prior to tolerancing. Iq#ZhAk  
    b{d4xU8'  
    Mnemonics: kaxvP v1  
    TFRN: Tolerance on curvature in fringes. (]RM6i7  
    TTHI: Tolerance on thickness. DNR~_3Aq  
    TSDX: Tolerance on surface decentering in x. kdxz!  
    TSDY: Tolerance on surface decentering in y. nI/kw%<  
    TSTX: Tolerance on surface tilt in x (degrees). 277ASCWLkU  
    TSTY: Tolerance on surface tilt in y (degrees). zF@o2<cD@  
    TIRR: Tolerance on irregularity (fringes). s-Aw<Q)d  
    TIND: Tolerance on Nd index of refraction. \":?xh_H  
    TEDX: Tolerance on element decentering in x. !" JfOu  
    TEDY: Tolerance on element decentering in y. 7R3fqU.Rq  
    TETX: Tolerance on element tilt in x (degrees). nLwiCf e  
    TETY: Tolerance on element tilt in y (degrees). ui "3ak+F  
    Fhv2V,nZ<  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. CvPioi  
    rrnNn'  
    WARNING: Boundary constraints on compensators will be ignored. ?\U!huu  
    v}sY|p"  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm \X F}?*8  
    Mode                : Sensitivities ~XydQJ^*  
    Sampling            : 2 c{>uqPTY  
    Nominal Criterion   : 0.54403234 )jCo%P/  
    Test Wavelength     : 0.6328 D?~8za`5  
    [k[u*5hP|F  
    mv atUe  
    Fields: XY Symmetric Angle in degrees hKNY+S})g  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY O1D6^3w  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ZkP {[^6d\  
    B_ja&) !s1  
    Sensitivity Analysis: Uu"0rUzt  
    Um)>2|rp}  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| FG%j {_Ez  
    Type                      Value      Criterion        Change          Value      Criterion        Change TZ;p0^(  
    Fringe tolerance on surface 1 7 uMd ZpD  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 EQIUSh)M  
    Change in Focus                :      -0.000000                            0.000000 2$ !D* <  
    Fringe tolerance on surface 2 Z?NEO>h7  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 _Cy:]2o  
    Change in Focus                :       0.000000                            0.000000 U{~SXk'2+  
    Fringe tolerance on surface 3 %d m-?`  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Eq^uKi  
    Change in Focus                :      -0.000000                            0.000000 mmEp'E  
    Thickness tolerance on surface 1 |!H?+Jj:  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Sd))vS^g  
    Change in Focus                :       0.000000                            0.000000 ~=&t0D  
    Thickness tolerance on surface 2 xU S]P)R  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 C}?0`!Cc%  
    Change in Focus                :       0.000000                           -0.000000 SQWafD  
    Decenter X tolerance on surfaces 1 through 3 #FYAV%pi  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 3+xy4 G@L  
    Change in Focus                :       0.000000                            0.000000 mxFn7.|r~  
    Decenter Y tolerance on surfaces 1 through 3 zTo8OPr  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 }wwe}E-e  
    Change in Focus                :       0.000000                            0.000000 'P laMOy  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ?0<w  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 tZ2K$!/B  
    Change in Focus                :       0.000000                            0.000000 u/Fj'*M  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) a :HNg  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 | A:@ &|  
    Change in Focus                :       0.000000                            0.000000 K?u(1  
    Decenter X tolerance on surface 1 TNY4z(r  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [m'CR 4(|  
    Change in Focus                :       0.000000                            0.000000 DlyMJ#a  
    Decenter Y tolerance on surface 1 J?n<ydZSH  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 u>.y:>  
    Change in Focus                :       0.000000                            0.000000  m@rSz  
    Tilt X tolerance on surface (degrees) 1 .G>t72DpU  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 BF8"rq}r0  
    Change in Focus                :       0.000000                            0.000000 mzD^ Y<LTd  
    Tilt Y tolerance on surface (degrees) 1 zzZg$9PT[  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Di Or{)a  
    Change in Focus                :       0.000000                            0.000000 8 Op.eYe  
    Decenter X tolerance on surface 2 kGN||h  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 >_ X/[<  
    Change in Focus                :       0.000000                            0.000000  0=6/yc  
    Decenter Y tolerance on surface 2 ,smF^l   
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 cs_}&!c{  
    Change in Focus                :       0.000000                            0.000000 uD>z@J-v  
    Tilt X tolerance on surface (degrees) 2 beZ(o?uK  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 oP,9#FC|(  
    Change in Focus                :       0.000000                            0.000000 GlR~%q-jiQ  
    Tilt Y tolerance on surface (degrees) 2 UP2.]B!d  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 VY'Q|[  
    Change in Focus                :       0.000000                            0.000000 jB@4b 'y  
    Decenter X tolerance on surface 3 )u@c3?$6  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 tSv0" L  
    Change in Focus                :       0.000000                            0.000000 S7n"3.k  
    Decenter Y tolerance on surface 3 zW4 O4b$T  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 gbOCR1PBg  
    Change in Focus                :       0.000000                            0.000000 *j*Du+  
    Tilt X tolerance on surface (degrees) 3 `Y3(~~YGn  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ~!+h?[miV  
    Change in Focus                :       0.000000                            0.000000 b;9n'UX\  
    Tilt Y tolerance on surface (degrees) 3 i (HByI  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 'I/h(  
    Change in Focus                :       0.000000                            0.000000 CJNG) p  
    Irregularity of surface 1 in fringes ;R[&pDx  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 +T_ p8W+j  
    Change in Focus                :       0.000000                            0.000000 ,EhVSrh)_4  
    Irregularity of surface 2 in fringes @R:#"  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 +lp{#1q0  
    Change in Focus                :       0.000000                            0.000000 sms1%%~  
    Irregularity of surface 3 in fringes M%=P)cC  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 RfbdBsL  
    Change in Focus                :       0.000000                            0.000000 DBbc|I/[l  
    Index tolerance on surface 1 }. %s xw  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 N&;\PfG  
    Change in Focus                :       0.000000                            0.000000 qj?2%mK`  
    Index tolerance on surface 2 {-*\w-~G  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 qw:9zYG}qW  
    Change in Focus                :       0.000000                           -0.000000 zS% m_,t  
    b>q6:=((  
    Worst offenders: yMIT(  
    Type                      Value      Criterion        Change Hc!!tbBQ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ha'qIT 3&  
    TSTY   2             0.20000000     0.35349910    -0.19053324 hhq$g{+[  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 fykI,!  
    TSTX   2             0.20000000     0.35349910    -0.19053324 8[\ 79|  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 aR(E7mXQ  
    TSTY   1             0.20000000     0.42678383    -0.11724851 S|2VP8xY9  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 1=TSJ2{ 9  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Hptq,~_t  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 h=f6~5l5  
    TSTY   3             0.20000000     0.42861670    -0.11541563 wr@GN8e`  
    (Nt[v;BnO  
    Estimated Performance Changes based upon Root-Sum-Square method: z<QIuq  
    Nominal MTF                 :     0.54403234 w~v<v&  
    Estimated change            :    -0.36299231 8xo;E=`   
    Estimated MTF               :     0.18104003 sQ(1/"gb  
    j6X LyeG7  
    Compensator Statistics: Qg>L,ZO  
    Change in back focus: ]I XAucI]  
    Minimum            :        -0.000000 X\G)81Q.S  
    Maximum            :         0.000000 wG:$6  
    Mean               :        -0.000000 -><QFJ  
    Standard Deviation :         0.000000 LD@7(?mlU  
    ~j}J<4&OvC  
    Monte Carlo Analysis: Gmgeve  
    Number of trials: 20 1nXqi)&?;  
    m3%ef  
    Initial Statistics: Normal Distribution -,@bA @&  
    z\h, SX<U  
      Trial       Criterion        Change zPE#[\O21B  
          1     0.42804416    -0.11598818 9 d] tjT  
    Change in Focus                :      -0.400171 1HXlHic  
          2     0.54384387    -0.00018847 z6}Pj>1  
    Change in Focus                :       1.018470 p[;8  
          3     0.44510003    -0.09893230 Rf8:+d[Jj|  
    Change in Focus                :      -0.601922 $nc, ?)i!  
          4     0.18154684    -0.36248550 5\+EHW!o  
    Change in Focus                :       0.920681 (l;C%O7*  
          5     0.28665820    -0.25737414 .r6YrB@['  
    Change in Focus                :       1.253875 DrV0V .t,  
          6     0.21263372    -0.33139862 u mqKFM$  
    Change in Focus                :      -0.903878 I W8.  
          7     0.40051424    -0.14351809 m\} =4b  
    Change in Focus                :      -1.354815 dWIZ37w+D  
          8     0.48754161    -0.05649072 }RDb1~6C  
    Change in Focus                :       0.215922 WxDb3l~  
          9     0.40357468    -0.14045766 iZu:uMoc  
    Change in Focus                :       0.281783 I-,Xwj-  
         10     0.26315315    -0.28087919 ~ \-r  
    Change in Focus                :      -1.048393 %,Q;<axzi  
         11     0.26120585    -0.28282649 D;J|eC>^  
    Change in Focus                :       1.017611 j`+0.Zlq  
         12     0.24033815    -0.30369419 :MdEr//w  
    Change in Focus                :      -0.109292 # s,Y% Bce  
         13     0.37164046    -0.17239188 +Gp!cGaAm  
    Change in Focus                :      -0.692430 )MMhlcNC  
         14     0.48597489    -0.05805744 [ArO$X3\  
    Change in Focus                :      -0.662040 JYl\<Z' {  
         15     0.21462327    -0.32940907 u& AQl.u  
    Change in Focus                :       1.611296 j& <tdORT  
         16     0.43378226    -0.11025008 +H?<}N*T  
    Change in Focus                :      -0.640081 )fy <P;g  
         17     0.39321881    -0.15081353 dqL  -'  
    Change in Focus                :       0.914906 mC% %)F'Zf  
         18     0.20692530    -0.33710703 lJ("6aT?  
    Change in Focus                :       0.801607 nh?9R&  
         19     0.51374068    -0.03029165 %h3L  
    Change in Focus                :       0.947293 } =xI3;7  
         20     0.38013374    -0.16389860 Q Id"Cl)3  
    Change in Focus                :       0.667010 k62$:9`5  
    65;|cmjv  
    Number of traceable Monte Carlo files generated: 20 d"LoK,p#  
    p"g1V7B  
    Nominal     0.54403234 b-,]A2.  
    Best        0.54384387    Trial     2 [}jj<!9A_;  
    Worst       0.18154684    Trial     4 )A"ZV[eOoQ  
    Mean        0.35770970 wK2yt?  
    Std Dev     0.11156454 V^9$t/c &  
    -MQZiq7H4  
    xcAF  
    Compensator Statistics: d?Ia#K9 3G  
    Change in back focus: B#| Z`mZ  
    Minimum            :        -1.354815 d*]Dv,#X  
    Maximum            :         1.611296 r.Y*{!t  
    Mean               :         0.161872 uDpf2(>s  
    Standard Deviation :         0.869664 wBg<Q{J  
    t5I^1u6  
    90% >       0.20977951               E~rs11  
    80% >       0.22748071               D)f5pEq'  
    50% >       0.38667627               l6',  
    20% >       0.46553746               y21)~  
    10% >       0.50064115                `wP/Zp{Hy  
    M@',3  
    End of Run. \.K\YAM<  
    ./7&_9| <  
    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 j|3g(_v4W  
    ~uP r]#  
    Y\+(rC27  
    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 -d$8WSI 8  
    Ib_n'$5#z  
    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                 zIAu3  
    80% >       0.22748071                 0)6i~MglY  
    50% >       0.38667627                 !s#'pTZk4  
    20% >       0.46553746                 dy2_@/T7  
    10% >       0.50064115 O<eWq]  
    78^UgO/  
    最后这个数值是MTF值呢，还是MTF的公差？ Yj^avO=;  
    E3FW*UNg[y  
    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？？？   ';;p8bv+  
    i-:8TfI,  
    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  : \yX !P1  
    90% >       0.20977951                 M::IE|h  
    80% >       0.22748071                 @7HOL-i  
    50% >       0.38667627                 /|u]Y/ *  
    20% >       0.46553746                 \9|]  
    10% >       0.50064115 c~L6fvS  
    ....... &x0TnW"g  
    n?P 5pJ  
    `6BS-AVO7  
    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&=GB\`:a  
    Mode                : Sensitivities Bbt8fJA~  
    Sampling            : 2 4gv XJK-  
    Nominal Criterion   : 0.54403234 6:EH5IO  
    Test Wavelength     : 0.6328 hPeKQwzC0  
    55\X\> 0C7  
    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？ ~Yz/t  
    $9i5<16  
    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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