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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 Y?hC/ 6$7  
    ?}%Gr,tj2  
    j[YzBXd V  
    k;:v~7VF  
    然后添加了默认公差分析，基本没变 "Iu[)O%  
    H n+1I  
    `pY\Mmgv1  
    eSXt"t  
    然后运行分析的结果如下： 9@C3jZ+9`H  
    (A?{6  
    Analysis of Tolerances 9"R]"v3BA  
    5=Mm=HyI2  
    File : E:\光学设计资料\zemax练习\f500.ZMX Y-&r_s_~  
    Title: +NPk9jn  
    Date : TUE JUN 21 2011 ;nG"y:qq  
    Ojp)OeF\  
    Units are Millimeters. rKq/=Avv  
    All changes are computed using linear differences. (5{|']G  
    o7VNw8Bp  
    Paraxial Focus compensation only. CFqoD l  
    vTjgW?9  
    WARNING: Solves should be removed prior to tolerancing. (r`+q[  
    49}yw3-  
    Mnemonics: 2}]6~i  
    TFRN: Tolerance on curvature in fringes. WZ5[tZf  
    TTHI: Tolerance on thickness. k|-`d  
    TSDX: Tolerance on surface decentering in x. ?RvXO'ml  
    TSDY: Tolerance on surface decentering in y. Z$0r+phQk=  
    TSTX: Tolerance on surface tilt in x (degrees). z h0m3|9O  
    TSTY: Tolerance on surface tilt in y (degrees). I#@iA!  
    TIRR: Tolerance on irregularity (fringes). > ZkcL7t9  
    TIND: Tolerance on Nd index of refraction. XETY)<g  
    TEDX: Tolerance on element decentering in x. -h*Yd)  
    TEDY: Tolerance on element decentering in y. 6BVV2j)zl:  
    TETX: Tolerance on element tilt in x (degrees). B?-RzWB\3  
    TETY: Tolerance on element tilt in y (degrees). tx&>Eo  
    (w]w 2&Y D  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. !U}A1)  
    nul?5{z@  
    WARNING: Boundary constraints on compensators will be ignored. ;6t>!2I>C  
    oT&JQ,i[2Q  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm k);z}`7  
    Mode                : Sensitivities Dqe)8 r  
    Sampling            : 2 @8Drhx  
    Nominal Criterion   : 0.54403234 RGhl` ;  
    Test Wavelength     : 0.6328 ~j 3B'  
    shxr^   
    28SlFu?  
    Fields: XY Symmetric Angle in degrees wQ!~c2a<8  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY >h<eEv/  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ;|w &n  
    93 x.b]] "  
    Sensitivity Analysis: u1` 8f]qt  
    c }ivYH?`w  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------|  wxsJB2  
    Type                      Value      Criterion        Change          Value      Criterion        Change +@]1!|@(  
    Fringe tolerance on surface 1 :7Rs$ -*Uk  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 MTb}um.($  
    Change in Focus                :      -0.000000                            0.000000 9 f-T>}  
    Fringe tolerance on surface 2 D/V. o}X$  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 og MLv}  
    Change in Focus                :       0.000000                            0.000000 O 4N_lr~  
    Fringe tolerance on surface 3 W)^:*z  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 /`hr)  
    Change in Focus                :      -0.000000                            0.000000 ?Li^XONz  
    Thickness tolerance on surface 1 ixBM>mRK  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 tzi+A;>c(v  
    Change in Focus                :       0.000000                            0.000000 sxgR;gf6  
    Thickness tolerance on surface 2 seHwn'Jn  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 %2BFbaE  
    Change in Focus                :       0.000000                           -0.000000 nX5*pTfjL3  
    Decenter X tolerance on surfaces 1 through 3 #i ?@S$  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9/}i6j8Z  
    Change in Focus                :       0.000000                            0.000000 (J.(Fl>^  
    Decenter Y tolerance on surfaces 1 through 3 qS&PMQ"$  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 .`Z{ptt>  
    Change in Focus                :       0.000000                            0.000000 >1pD'UZIy7  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 90sMS]a  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 <Ml,H%F  
    Change in Focus                :       0.000000                            0.000000 n8[sR;r5f  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) jm RYL("  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ;DC0LJ  
    Change in Focus                :       0.000000                            0.000000 ?MKf=! w  
    Decenter X tolerance on surface 1 :m8ED[9b  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 KrMIJA4>  
    Change in Focus                :       0.000000                            0.000000 }S*6+4  
    Decenter Y tolerance on surface 1 ^ eM=h  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 )@eBe^  
    Change in Focus                :       0.000000                            0.000000 t8i"f L  
    Tilt X tolerance on surface (degrees) 1 lU Uq|Qr  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 HZ 8 j[kO  
    Change in Focus                :       0.000000                            0.000000 (N;Jw^C@  
    Tilt Y tolerance on surface (degrees) 1 [7<X&Q  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Z;%  
    Change in Focus                :       0.000000                            0.000000 hp-< 8Mf  
    Decenter X tolerance on surface 2 d/Py,  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 cnLC>_hY  
    Change in Focus                :       0.000000                            0.000000 v^@L?{" }8  
    Decenter Y tolerance on surface 2 ~lDLdUs  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 yp@mxI@1  
    Change in Focus                :       0.000000                            0.000000 x ?^c:`.  
    Tilt X tolerance on surface (degrees) 2 ~|DF-t V  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 V]q{N-Iq  
    Change in Focus                :       0.000000                            0.000000 %M}zi'qQ?  
    Tilt Y tolerance on surface (degrees) 2 )[p8  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 X'k w5P!sq  
    Change in Focus                :       0.000000                            0.000000 =7e8N&-nv  
    Decenter X tolerance on surface 3 w-B\AK?}  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 (R6ZoBZ  
    Change in Focus                :       0.000000                            0.000000 P? 9CBhN  
    Decenter Y tolerance on surface 3 ]VwAHT&je  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 v~jN,f*  
    Change in Focus                :       0.000000                            0.000000 EAY9~b6~c  
    Tilt X tolerance on surface (degrees) 3 N->;q^  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 JYSw!!eC  
    Change in Focus                :       0.000000                            0.000000 >F+:ej  
    Tilt Y tolerance on surface (degrees) 3 T&R`s+7  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 e\yj>tQJg  
    Change in Focus                :       0.000000                            0.000000 U">OdoZ,E+  
    Irregularity of surface 1 in fringes @=;6:akz`  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 aNq Vs|H  
    Change in Focus                :       0.000000                            0.000000 Lvp/} /H/  
    Irregularity of surface 2 in fringes r#Pd@SV  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 +uT=Wb \  
    Change in Focus                :       0.000000                            0.000000 F)gL=6h  
    Irregularity of surface 3 in fringes iGhapD  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 L1F){8[  
    Change in Focus                :       0.000000                            0.000000 E_H1X'|qS4  
    Index tolerance on surface 1 qS2%U?S7  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ?0?'  
    Change in Focus                :       0.000000                            0.000000 :lE7v~!Z  
    Index tolerance on surface 2 I7uYsjh@u  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ko5\*!|:lj  
    Change in Focus                :       0.000000                           -0.000000 KDXo9FzF  
    gIRCJ=e[b  
    Worst offenders: AGv;8'`  
    Type                      Value      Criterion        Change ITsJjcYw  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 &a|oJ'clz  
    TSTY   2             0.20000000     0.35349910    -0.19053324 B "qG-ci  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 {'b8;x8h  
    TSTX   2             0.20000000     0.35349910    -0.19053324 0)P18n"$  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 K[ \z'9Q  
    TSTY   1             0.20000000     0.42678383    -0.11724851 t%TZu>(1O  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 |SxEJ  
    TSTX   1             0.20000000     0.42678383    -0.11724851 :?p{ga9  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 HhpP}9P;  
    TSTY   3             0.20000000     0.42861670    -0.11541563 \O0fo^+U,,  
    t{ 7l.>kf  
    Estimated Performance Changes based upon Root-Sum-Square method: o?b%L  
    Nominal MTF                 :     0.54403234 lyi}q"Kn*;  
    Estimated change            :    -0.36299231 R80R{Ze  
    Estimated MTF               :     0.18104003 )ld7^G  
    [-CG&l2?L  
    Compensator Statistics: p;5WLAF  
    Change in back focus: !;xE7w  
    Minimum            :        -0.000000 /F4:1 }  
    Maximum            :         0.000000 JxvwquI  
    Mean               :        -0.000000 */\.-L{h  
    Standard Deviation :         0.000000 7'8O*EoB'  
    ~FsUK;?  
    Monte Carlo Analysis: 3Yf$WE8#l  
    Number of trials: 20 x)?\g{JH  
    ry T8*}o  
    Initial Statistics: Normal Distribution Q?tV:jogY  
    g|zK%tR_P  
      Trial       Criterion        Change OP&[5X+Y  
          1     0.42804416    -0.11598818 68!]q(!6F  
    Change in Focus                :      -0.400171 Cn55%:  
          2     0.54384387    -0.00018847 MvW>ktkU  
    Change in Focus                :       1.018470 4w?7AI]Ej  
          3     0.44510003    -0.09893230 w\mF2h  
    Change in Focus                :      -0.601922 ~3%3{a a  
          4     0.18154684    -0.36248550 g\l;>  
    Change in Focus                :       0.920681 xL BG}C  
          5     0.28665820    -0.25737414 C:K\-P9  
    Change in Focus                :       1.253875 U<t-LF3  
          6     0.21263372    -0.33139862 nx4aGS"F:  
    Change in Focus                :      -0.903878 G<z)Ydh_  
          7     0.40051424    -0.14351809 f8 ja Mn9o  
    Change in Focus                :      -1.354815 j{^(TE  
          8     0.48754161    -0.05649072 c`+ITNV  
    Change in Focus                :       0.215922 HDEG/k/~m  
          9     0.40357468    -0.14045766 9,W-KM  
    Change in Focus                :       0.281783 K$.zO4  
         10     0.26315315    -0.28087919 ./ :86@O  
    Change in Focus                :      -1.048393 :qbG%_PJ  
         11     0.26120585    -0.28282649 Q*8-d9C  
    Change in Focus                :       1.017611 4yA`);r62  
         12     0.24033815    -0.30369419 f+920/>!Z  
    Change in Focus                :      -0.109292 QdTe!f|  
         13     0.37164046    -0.17239188 AAW7@\q.  
    Change in Focus                :      -0.692430 Kzb@JBIF  
         14     0.48597489    -0.05805744 ["F,|e{y$  
    Change in Focus                :      -0.662040 eTc`FXw`  
         15     0.21462327    -0.32940907 E8i:ER $$7  
    Change in Focus                :       1.611296 {X$Mwqhpp;  
         16     0.43378226    -0.11025008 /4?`F} 7)  
    Change in Focus                :      -0.640081 f*],j  
         17     0.39321881    -0.15081353 Ic}ofBK  
    Change in Focus                :       0.914906 ]Yg EnZ  
         18     0.20692530    -0.33710703 Dkb&/k:)  
    Change in Focus                :       0.801607 `VsGa  
         19     0.51374068    -0.03029165 !`_f\  
    Change in Focus                :       0.947293 d]3sC  
         20     0.38013374    -0.16389860 vR$5ItnT  
    Change in Focus                :       0.667010 uE j6A  
    +][P*/Ek  
    Number of traceable Monte Carlo files generated: 20 {9".o,  
    ra>`J_  
    Nominal     0.54403234 %?hLo8  
    Best        0.54384387    Trial     2 lc-|Q#$3$  
    Worst       0.18154684    Trial     4 :Y>] 6  
    Mean        0.35770970 E5 oD|'=WA  
    Std Dev     0.11156454 u`@f ~QP0  
    zfb _ )  
    S=p u  
    Compensator Statistics: (OB8vTRXP  
    Change in back focus: ]5f M?:<l  
    Minimum            :        -1.354815 }yw;L(3  
    Maximum            :         1.611296 + nS/jW  
    Mean               :         0.161872 XL^N5  
    Standard Deviation :         0.869664 ^gzNP#A<'o  
    df *#?Ok  
    90% >       0.20977951               ^4pKsO3ul  
    80% >       0.22748071               t3$gwO$  
    50% >       0.38667627               ~C'nBV  
    20% >       0.46553746               gF6j6  
    10% >       0.50064115                Ok&>[qu  
    hxVM]e[  
    End of Run. oh~ vo!  
    g@i>R>  
    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 DA)v3Nd  
    "GI&S%F  
    WgJAr73 l  
    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 Us,[x Q  
    Tki/ 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                 6!%d-Z7)  
    80% >       0.22748071                 _SIs19"lR  
    50% >       0.38667627                 `)=A !x y  
    20% >       0.46553746                 w$lfR ,  
    10% >       0.50064115 Uk *;C  
    m/hi~. D9  
    最后这个数值是MTF值呢，还是MTF的公差？ I0w@S7  
    rw8J:?0x  
    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？？？   R_>TEYZ  
    Q;XHHk  
    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  : Z:_m}Ya|  
    90% >       0.20977951                 4Vu'r?  
    80% >       0.22748071                 W{fULl  
    50% >       0.38667627                 ,J~,ga~  
    20% >       0.46553746                 %rpR-}j  
    10% >       0.50064115 #<a_: m)@  
    ....... ;[{:'^n  
    '2|1%NSW9  
    {BFT  
    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   gB(9vhj $  
    Mode                : Sensitivities ;Y Dv.I  
    Sampling            : 2 ]s*5[ =uc2  
    Nominal Criterion   : 0.54403234 2}^+ ]5  
    Test Wavelength     : 0.6328 b7,  
    t{_!Z(Rt5)  
    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？ W;^N8ap%  
    CXBzX:T?#  
    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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