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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 @r#v[I  
    R$[#+X!  
    %7"X(Ts7B  
     :@%4  
    然后添加了默认公差分析，基本没变 "NgxkbDEbG  
    | \'rP_I>  
    Ytz)d/3T  
    qjf[zF  
    然后运行分析的结果如下： eU<]o< \Qo  
    b!sRk@LGZ  
    Analysis of Tolerances F{eU";D  
    BO~PT,QrF  
    File : E:\光学设计资料\zemax练习\f500.ZMX MxGu>r  
    Title: L5#P[cHzz  
    Date : TUE JUN 21 2011 wQwQXNG  
    s<oNE)xe  
    Units are Millimeters. ^go7_y  
    All changes are computed using linear differences. "Qja1TQ  
    6ek;8dL  
    Paraxial Focus compensation only. wvbPnf^y  
    4eikLRD,  
    WARNING: Solves should be removed prior to tolerancing. 7b<je=G6PA  
    /%&2HDA)  
    Mnemonics: vgUb{D  
    TFRN: Tolerance on curvature in fringes. q{t*34R  
    TTHI: Tolerance on thickness. WAn~ +=Ax  
    TSDX: Tolerance on surface decentering in x. r6&5 4f  
    TSDY: Tolerance on surface decentering in y. UEozAY  
    TSTX: Tolerance on surface tilt in x (degrees). P?t" jKp'  
    TSTY: Tolerance on surface tilt in y (degrees). B x (uRj  
    TIRR: Tolerance on irregularity (fringes). [P 06lIO  
    TIND: Tolerance on Nd index of refraction. DdVF,  
    TEDX: Tolerance on element decentering in x. /c2w/+ _  
    TEDY: Tolerance on element decentering in y. 0&/b42W  
    TETX: Tolerance on element tilt in x (degrees). L{(QpgHZ  
    TETY: Tolerance on element tilt in y (degrees). mml<9fbH  
    tQ H+)*  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ^4,a8`  
    (cN}Epi(D  
    WARNING: Boundary constraints on compensators will be ignored. iVG-_RsKK  
    hi0R.V&  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm _>9.v%5cs(  
    Mode                : Sensitivities | fSe>uVZ  
    Sampling            : 2 L2, 1Kt7  
    Nominal Criterion   : 0.54403234 |37 g ~  
    Test Wavelength     : 0.6328 Nkp)Ax&  
    wc!onZX5  
     w~ [b*$  
    Fields: XY Symmetric Angle in degrees xA9:*>+>  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY z}{afEb  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 M-;4   
    ^_ kJKM,  
    Sensitivity Analysis: BRk0CLr5  
    ]|sAK%/  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| BQ @huns3  
    Type                      Value      Criterion        Change          Value      Criterion        Change Er{#ziN+  
    Fringe tolerance on surface 1 K^ B%/T]d  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ~i21%$  
    Change in Focus                :      -0.000000                            0.000000 @DZB9DDR  
    Fringe tolerance on surface 2 WHlYo5?  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 =e8bNg  
    Change in Focus                :       0.000000                            0.000000 %/YcL6o(  
    Fringe tolerance on surface 3 bks/ `rIA  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 KyzFnVH3)  
    Change in Focus                :      -0.000000                            0.000000 <x&%~6j  
    Thickness tolerance on surface 1 1P(|[W1  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ] Puy!Q  
    Change in Focus                :       0.000000                            0.000000 ({NAMc*  
    Thickness tolerance on surface 2 04*6(L)h*  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 #( 1j#\  
    Change in Focus                :       0.000000                           -0.000000 _>v<(7  
    Decenter X tolerance on surfaces 1 through 3 Vo7dAHHL  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 59#lU~Kv  
    Change in Focus                :       0.000000                            0.000000 `\m*+Bk[5  
    Decenter Y tolerance on surfaces 1 through 3 1c;6xc,ub  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 x3u4v~ "-  
    Change in Focus                :       0.000000                            0.000000 '&sE=.  
    Tilt X tolerance on surfaces 1 through 3 (degrees) E=cwq"  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 P1NJ^rX  
    Change in Focus                :       0.000000                            0.000000 m\ddp_l  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) %/>Y/!;  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 U-:ieao@  
    Change in Focus                :       0.000000                            0.000000 Z*])6=2Q  
    Decenter X tolerance on surface 1 ?_ dIIQ  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 |=EZ1<KzD  
    Change in Focus                :       0.000000                            0.000000 on8WQf'A#  
    Decenter Y tolerance on surface 1 h(F<h_  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 8@PX7!9  
    Change in Focus                :       0.000000                            0.000000 =+x yI  
    Tilt X tolerance on surface (degrees) 1 AQc,>{Lm  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 6: ]*c[7  
    Change in Focus                :       0.000000                            0.000000 ;/0 Q1-  
    Tilt Y tolerance on surface (degrees) 1 ) /v6l  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 iR\Hv'|  
    Change in Focus                :       0.000000                            0.000000 nwN@DqO  
    Decenter X tolerance on surface 2 B}eA\O4}I  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 l$YC/ bP  
    Change in Focus                :       0.000000                            0.000000 \T;\XAGr  
    Decenter Y tolerance on surface 2 &<+ A((/i  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #BQ.R,  
    Change in Focus                :       0.000000                            0.000000 4]/7 )x?R  
    Tilt X tolerance on surface (degrees) 2 ^+ wD43  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 /5#rADOS  
    Change in Focus                :       0.000000                            0.000000 ?\#N9 +{W  
    Tilt Y tolerance on surface (degrees) 2 wP57Pf0  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 o=RM-tR`v  
    Change in Focus                :       0.000000                            0.000000 7y`}PMn  
    Decenter X tolerance on surface 3 E( h<$w8s  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 }/,HM9Ke  
    Change in Focus                :       0.000000                            0.000000 RID]pek  
    Decenter Y tolerance on surface 3 5"/J^"!h  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 :aG#~-Q  
    Change in Focus                :       0.000000                            0.000000 z`Hy'{1  
    Tilt X tolerance on surface (degrees) 3 @m?QR(LJ  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 suH&jE$x  
    Change in Focus                :       0.000000                            0.000000 l?iSxqdT  
    Tilt Y tolerance on surface (degrees) 3 ^T.E+2=>z  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Sggq3l$Qc  
    Change in Focus                :       0.000000                            0.000000 jt@SZI`  
    Irregularity of surface 1 in fringes ](B@5-^  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 9z I.pv+]  
    Change in Focus                :       0.000000                            0.000000 q\rC5gk >  
    Irregularity of surface 2 in fringes O8] 'o*<]  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 fA=#Fzk2  
    Change in Focus                :       0.000000                            0.000000 j Y6MjZI  
    Irregularity of surface 3 in fringes X]loJoM9  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 QW_agm  
    Change in Focus                :       0.000000                            0.000000 &vovA} F  
    Index tolerance on surface 1 /cK%n4l.y  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 P"lBB8\eku  
    Change in Focus                :       0.000000                            0.000000 4 V1bLm  
    Index tolerance on surface 2 xvNo(>  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 X1tXqHJF}  
    Change in Focus                :       0.000000                           -0.000000 -AYA~O(&  
    cE iu)2*e  
    Worst offenders: >\ u<&>i  
    Type                      Value      Criterion        Change F/1#l@qN  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Ke-)vPc  
    TSTY   2             0.20000000     0.35349910    -0.19053324 `mH %!{P  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 L'i-fM[#  
    TSTX   2             0.20000000     0.35349910    -0.19053324 [~\PQYm'  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 muW!xY  
    TSTY   1             0.20000000     0.42678383    -0.11724851 B$KwkhMe  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 $hR)i  
    TSTX   1             0.20000000     0.42678383    -0.11724851 93IFcmO.H@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 \tyg(srw0  
    TSTY   3             0.20000000     0.42861670    -0.11541563 #&8}<8V  
    !'=15&5@  
    Estimated Performance Changes based upon Root-Sum-Square method: 8wH.et25k  
    Nominal MTF                 :     0.54403234 Zs2-u^3&  
    Estimated change            :    -0.36299231 K={qU[_O  
    Estimated MTF               :     0.18104003 <P%}|@  
    uE=$p)  
    Compensator Statistics: 7*wVI+  
    Change in back focus: QHBtWQgS  
    Minimum            :        -0.000000 +KEkmXZ  
    Maximum            :         0.000000 `N/RHb%  
    Mean               :        -0.000000 T88Y qI  
    Standard Deviation :         0.000000 !5}l&7:(MN  
    hIJ)MZU|  
    Monte Carlo Analysis: 6 fz}  
    Number of trials: 20 utlpY1#q/  
    ?yXAu0  
    Initial Statistics: Normal Distribution /q\_&@  
    ~Z$bf>[(R7  
      Trial       Criterion        Change (IbW; bV  
          1     0.42804416    -0.11598818 B6}FIg)  
    Change in Focus                :      -0.400171  6qo^2  
          2     0.54384387    -0.00018847 D~K;~nI  
    Change in Focus                :       1.018470 ]J2:194  
          3     0.44510003    -0.09893230 fR-C0"c  
    Change in Focus                :      -0.601922 ,}D}oo*  
          4     0.18154684    -0.36248550 n uQM^2  
    Change in Focus                :       0.920681 )<4_:  
          5     0.28665820    -0.25737414 L3(^{W]|  
    Change in Focus                :       1.253875 Aw!gSf)  
          6     0.21263372    -0.33139862 V_U'P>_I  
    Change in Focus                :      -0.903878 r!N]$lB  
          7     0.40051424    -0.14351809 *B)yy[8j+  
    Change in Focus                :      -1.354815 S\NL+V?7h  
          8     0.48754161    -0.05649072 >n.z)ZJ  
    Change in Focus                :       0.215922 {Z{o"56f  
          9     0.40357468    -0.14045766 %1McD{  
    Change in Focus                :       0.281783 TB aVW  
         10     0.26315315    -0.28087919 |-2}j2'  
    Change in Focus                :      -1.048393 s]B"qF A  
         11     0.26120585    -0.28282649 u3tZ[Y2 c  
    Change in Focus                :       1.017611 ekf$dgoR  
         12     0.24033815    -0.30369419 qW^vz  
    Change in Focus                :      -0.109292 @=]8^?$t 0  
         13     0.37164046    -0.17239188 H ;@!?I  
    Change in Focus                :      -0.692430 {#Q\z>  
         14     0.48597489    -0.05805744 ~bA,GfSn0  
    Change in Focus                :      -0.662040 0WxCSL$#I  
         15     0.21462327    -0.32940907 e5v`;(^M  
    Change in Focus                :       1.611296 ek-!b!iI  
         16     0.43378226    -0.11025008 ^gro=Bp(  
    Change in Focus                :      -0.640081 |@VF.)_  
         17     0.39321881    -0.15081353 @y~P&HUN  
    Change in Focus                :       0.914906 \Xg?Ug*9w  
         18     0.20692530    -0.33710703 *ftC_v@p5  
    Change in Focus                :       0.801607 XbvDi+R 2A  
         19     0.51374068    -0.03029165 ^Ip3A  
    Change in Focus                :       0.947293 fJ80tt?r  
         20     0.38013374    -0.16389860 JSMPyj  
    Change in Focus                :       0.667010 yDd[e]zS`  
    Db03Nk>#  
    Number of traceable Monte Carlo files generated: 20 l`n5~Fs  
    udqge?Tz  
    Nominal     0.54403234 j^u[F"  
    Best        0.54384387    Trial     2 ?KN:r E  
    Worst       0.18154684    Trial     4 !)H*r|*[  
    Mean        0.35770970 @] .VQ<X|0  
    Std Dev     0.11156454 7t(Y;4<2  
    I ,FqN}  
    \gKdD S  
    Compensator Statistics: X}JWf<=q  
    Change in back focus: Uxl(96  
    Minimum            :        -1.354815 Etnb3<^[t  
    Maximum            :         1.611296 8cr NOZS6  
    Mean               :         0.161872 4Z%Y"PL(K  
    Standard Deviation :         0.869664 T[Q"}&bB  
    b&t[S[P.V  
    90% >       0.20977951               f~gSJ< t4  
    80% >       0.22748071               |+EKF.K  
    50% >       0.38667627               V2`;4dX*2  
    20% >       0.46553746               (.^8^uc 7X  
    10% >       0.50064115                6Dzs?P  
    C!UEXj`l9  
    End of Run. !]DuZ=  
    ~Yl$I,  
    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 E[S':Q  
    X5E '*W  
    lCFU1 GHH  
    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 APHPN:v  
    Y1r ,2k  
    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                 uHrb:X!q  
    80% >       0.22748071                 $ 'u \B  
    50% >       0.38667627                 ?z"YC&Tp  
    20% >       0.46553746                 U$09p;~$Ww  
    10% >       0.50064115 ;&`:|Hf*  
    `r.N  
    最后这个数值是MTF值呢，还是MTF的公差？  7kM4Ei  
    R9E6uz.j  
    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？？？   {kG;."S+K  
    \)GR\~z0h  
    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  : `fLfT'  
    90% >       0.20977951                 -#daBx ?  
    80% >       0.22748071                 DYkC'+TEX  
    50% >       0.38667627                 ([1=>Jw"  
    20% >       0.46553746                 +fkP+RVY  
    10% >       0.50064115 G}s;JJax  
    ....... [:Xn6)qz  
    qih6me8C  
    \A ;^ UxG  
    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   m\l51}xz  
    Mode                : Sensitivities =z+-l5Gu"  
    Sampling            : 2 i'U,S`L6>  
    Nominal Criterion   : 0.54403234 b_q! >&c  
    Test Wavelength     : 0.6328 zI1(F67d`  
    /7.wQeL9  
    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？ 6'S5sRA  
    B 9%yd*SJ  
    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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