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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 X<.l(9$  
    7S 8X)  
    {4A,&pR  
    7gV9m9#  
    然后添加了默认公差分析，基本没变 *xpn-hCp<  
    CJCxL\  
    82ixv<B  
    Zzg zeT+bv  
    然后运行分析的结果如下： QICxSk  
    :L+ xEL  
    Analysis of Tolerances #9r}Kr=P  
    Yb`b /BMR  
    File : E:\光学设计资料\zemax练习\f500.ZMX u&c%L0)E&  
    Title: U ^GVz%\  
    Date : TUE JUN 21 2011 p&V64L:V  
    lb}RPvQE  
    Units are Millimeters. 8rS;}Bt  
    All changes are computed using linear differences. %L]sQq,  
    Hcg7u7M{  
    Paraxial Focus compensation only. "0Z /|&  
    `:~Wu/Ogr  
    WARNING: Solves should be removed prior to tolerancing. w{dRf!b69  
    C7vBa<a  
    Mnemonics: EATVce]T  
    TFRN: Tolerance on curvature in fringes. 0fBwy/:  
    TTHI: Tolerance on thickness. ~7KH/%Z-  
    TSDX: Tolerance on surface decentering in x. N9#xTX  
    TSDY: Tolerance on surface decentering in y. RD)Vb$.B:  
    TSTX: Tolerance on surface tilt in x (degrees). <'$>&^!^  
    TSTY: Tolerance on surface tilt in y (degrees). R= mT J'y  
    TIRR: Tolerance on irregularity (fringes). R31Z(vY  
    TIND: Tolerance on Nd index of refraction. )P b$  
    TEDX: Tolerance on element decentering in x. GVlT+Rs7  
    TEDY: Tolerance on element decentering in y. YJHb\Cf.  
    TETX: Tolerance on element tilt in x (degrees). W/,:-R&'>  
    TETY: Tolerance on element tilt in y (degrees). {_*G"A 9  
    MG.c`t/w  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. c CDT27 @  
    !',%kvJI  
    WARNING: Boundary constraints on compensators will be ignored. "u4x#7n|  
    #[x*0K-h  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm /D;ugc*3  
    Mode                : Sensitivities CC"a2Hu/  
    Sampling            : 2 DMsqTB`  
    Nominal Criterion   : 0.54403234 }T\.;$f  
    Test Wavelength     : 0.6328 5vR])T/S0  
    cMT:Ij];  
    }PBL  
    Fields: XY Symmetric Angle in degrees 'Z.C&6_  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY M\k[?i  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ^&mrY[;S  
    fgj$ u  
    Sensitivity Analysis: tw<Oy^ i  
    ulW>8bW&  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Pf%I6bVN9  
    Type                      Value      Criterion        Change          Value      Criterion        Change ke;=Vg|  
    Fringe tolerance on surface 1 n.'Ps+G(  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 L"dN $ A  
    Change in Focus                :      -0.000000                            0.000000 T{^mh(3/"  
    Fringe tolerance on surface 2 B[7,Hy,R  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 #prYZcHv:_  
    Change in Focus                :       0.000000                            0.000000 e_3jyA@v  
    Fringe tolerance on surface 3 Twd*HH  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 *My9r.F5o  
    Change in Focus                :      -0.000000                            0.000000 `@1e{ ?$  
    Thickness tolerance on surface 1 LprGsqr:  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 J!~kqNI  
    Change in Focus                :       0.000000                            0.000000 1QD49)  
    Thickness tolerance on surface 2 =X5w=(&  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 J%r:"Jm[y1  
    Change in Focus                :       0.000000                           -0.000000 AD`5:G  
    Decenter X tolerance on surfaces 1 through 3 Uvc$&j^k  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 m='}t \=  
    Change in Focus                :       0.000000                            0.000000 {j`8XWLZZN  
    Decenter Y tolerance on surfaces 1 through 3 S},Cz  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ^J hs/HV  
    Change in Focus                :       0.000000                            0.000000 /8l@n dZf  
    Tilt X tolerance on surfaces 1 through 3 (degrees) QP50.P5g  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 F Xr\  
    Change in Focus                :       0.000000                            0.000000 U<sGj~"#  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) &0bq3JGW  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 J;wBS w%1  
    Change in Focus                :       0.000000                            0.000000 tw zV-8\  
    Decenter X tolerance on surface 1 YCb|eS^u  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 w[ 3a^  
    Change in Focus                :       0.000000                            0.000000  03zt^<  
    Decenter Y tolerance on surface 1 ZD|F"v.  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 (*6 .-Xn  
    Change in Focus                :       0.000000                            0.000000 z>,tP  
    Tilt X tolerance on surface (degrees) 1 }s'=w]m  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 "PN4{"`V  
    Change in Focus                :       0.000000                            0.000000 Qt>kythi  
    Tilt Y tolerance on surface (degrees) 1 5+oY c-  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 $")Gd@aR  
    Change in Focus                :       0.000000                            0.000000 q&9]4j  
    Decenter X tolerance on surface 2 lo6upir ZX  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Rsq EAdZw[  
    Change in Focus                :       0.000000                            0.000000 LQ%QFfC  
    Decenter Y tolerance on surface 2 9__Q-J  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 IOC$jab@  
    Change in Focus                :       0.000000                            0.000000 PbS1`8|4  
    Tilt X tolerance on surface (degrees) 2 .XeZjoJ$z  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 acUyz2x  
    Change in Focus                :       0.000000                            0.000000 /&47qU4PJ  
    Tilt Y tolerance on surface (degrees) 2 \zk>cQ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 45[,LJaMd  
    Change in Focus                :       0.000000                            0.000000 Ue Z(@6_:  
    Decenter X tolerance on surface 3 l4taD!WD/  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Zon7G6s9`  
    Change in Focus                :       0.000000                            0.000000 @@\px66  
    Decenter Y tolerance on surface 3 (7! pc  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 wX6-WQR  
    Change in Focus                :       0.000000                            0.000000 z ULH gG  
    Tilt X tolerance on surface (degrees) 3 OIw[sum2  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ^:ny  
    Change in Focus                :       0.000000                            0.000000 VE*`J i  
    Tilt Y tolerance on surface (degrees) 3 gn.)_  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 .9z}S=ZK  
    Change in Focus                :       0.000000                            0.000000 [hH>BEtm  
    Irregularity of surface 1 in fringes 9mXmghoCO  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 <1lB[:@%U  
    Change in Focus                :       0.000000                            0.000000 m*iSW]&  
    Irregularity of surface 2 in fringes u^^jt(j  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 rc>}3?o  
    Change in Focus                :       0.000000                            0.000000 Z<AZO ^  
    Irregularity of surface 3 in fringes ]lyQ*gM  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 !@ P{s'<:  
    Change in Focus                :       0.000000                            0.000000 jZmL7 V  
    Index tolerance on surface 1 0i8\Lu6  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 jp~Tlomp  
    Change in Focus                :       0.000000                            0.000000 $}S0LZ_H  
    Index tolerance on surface 2 `S? _=JIX  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 QALr   
    Change in Focus                :       0.000000                           -0.000000 T 8 ]*bw  
    D8E^[w!  
    Worst offenders: &Y9%Y/Y  
    Type                      Value      Criterion        Change #fx"tx6  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Ywt9^M|z;  
    TSTY   2             0.20000000     0.35349910    -0.19053324 doX`NbA  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 G eB-4img  
    TSTX   2             0.20000000     0.35349910    -0.19053324 _*sd#  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 yD!GgnW  
    TSTY   1             0.20000000     0.42678383    -0.11724851 /?Y4C)G  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Z RwN#?x  
    TSTX   1             0.20000000     0.42678383    -0.11724851 0%HAa|L,,  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 #a|r ^%D  
    TSTY   3             0.20000000     0.42861670    -0.11541563 'ju_l)(R  
    Unt]=S3u  
    Estimated Performance Changes based upon Root-Sum-Square method: m@D :t 5  
    Nominal MTF                 :     0.54403234 g~9rt_OV  
    Estimated change            :    -0.36299231 9Ou}8a?m"  
    Estimated MTF               :     0.18104003 &F[N$6:v  
    9X#]Lg?b  
    Compensator Statistics: &io+*  
    Change in back focus: ]JmE(Y1(1  
    Minimum            :        -0.000000 ?uP5("c  
    Maximum            :         0.000000 tOk=m'aUK  
    Mean               :        -0.000000 b rDyjh  
    Standard Deviation :         0.000000 9]G~i`QQ  
    E/1:4?1 S  
    Monte Carlo Analysis: ZtGk Md$  
    Number of trials: 20 SjA'<ZX>TM  
    U F89gG4  
    Initial Statistics: Normal Distribution }LEasj  
    d:]ZFk_*  
      Trial       Criterion        Change r t)[}+ox  
          1     0.42804416    -0.11598818 ?wIEXKI  
    Change in Focus                :      -0.400171 <+%y  
          2     0.54384387    -0.00018847 C\{hN  
    Change in Focus                :       1.018470 0f3>s>`M  
          3     0.44510003    -0.09893230 3a U4Z|f~  
    Change in Focus                :      -0.601922 0R]'HA>  
          4     0.18154684    -0.36248550 y6G6wk;  
    Change in Focus                :       0.920681 c5Kc iTD^  
          5     0.28665820    -0.25737414 ,]9p&xu  
    Change in Focus                :       1.253875 ^foCcO  
          6     0.21263372    -0.33139862 $|!3ks  
    Change in Focus                :      -0.903878 6 Rg>h  
          7     0.40051424    -0.14351809 .K#' Fec  
    Change in Focus                :      -1.354815 "18cD5-#  
          8     0.48754161    -0.05649072 6*|EB|%n  
    Change in Focus                :       0.215922 mv$gL  
          9     0.40357468    -0.14045766 /6 x[C  
    Change in Focus                :       0.281783 {=3'H?$  
         10     0.26315315    -0.28087919 L0%W;m  
    Change in Focus                :      -1.048393 %(\et%[]  
         11     0.26120585    -0.28282649 'XYjo&w  
    Change in Focus                :       1.017611 pd.pY*B<[  
         12     0.24033815    -0.30369419 H:z<]Rc  
    Change in Focus                :      -0.109292 Z{F^qwne  
         13     0.37164046    -0.17239188 ~Hx>yn94e  
    Change in Focus                :      -0.692430 nx{X^oc8e  
         14     0.48597489    -0.05805744 YXU2UIY<~  
    Change in Focus                :      -0.662040 Y31e1   
         15     0.21462327    -0.32940907 ,n>K$  
    Change in Focus                :       1.611296 [ 8WG  
         16     0.43378226    -0.11025008 e>uq/|.!  
    Change in Focus                :      -0.640081 bNvc@oo  
         17     0.39321881    -0.15081353 z<. 6jx@  
    Change in Focus                :       0.914906 J~ z00p`E  
         18     0.20692530    -0.33710703 uXG$YDKqC  
    Change in Focus                :       0.801607 "p>kiNu  
         19     0.51374068    -0.03029165 uF D  
    Change in Focus                :       0.947293 hb)83mH}  
         20     0.38013374    -0.16389860 H$zDk  
    Change in Focus                :       0.667010 >#.du}t  
    =C^4nP-  
    Number of traceable Monte Carlo files generated: 20 h?->A#  
    3JF" O+@  
    Nominal     0.54403234 `yRt?UQRS  
    Best        0.54384387    Trial     2 mJVru0  
    Worst       0.18154684    Trial     4 pWoeF=+y]W  
    Mean        0.35770970  @]V_%,  
    Std Dev     0.11156454 W{]r_`=:6S  
    dA(+02U/.  
    I]91{dq  
    Compensator Statistics: +KP&D.wIo  
    Change in back focus: S09Xe_q  
    Minimum            :        -1.354815 gm: xtN  
    Maximum            :         1.611296 O%} hNTS"  
    Mean               :         0.161872 xu'b@G}12  
    Standard Deviation :         0.869664 ZYTBc#f  
    Ui"3'OU'  
    90% >       0.20977951               BGO pUy  
    80% >       0.22748071               ^/$U(4  
    50% >       0.38667627               %e/L .#0  
    20% >       0.46553746               _G^4KwYp  
    10% >       0.50064115                O<?.iF%  
    rGQ([e  
    End of Run. 0y;1D k!  
    0\o5+  
    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 FJ|JXH*  
    L^ U.h  
    #BI 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 !qs3fe<uh"  
    (/_w23rr  
    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                 g_(O7  
    80% >       0.22748071                 |k/;1.b!9(  
    50% >       0.38667627                 VO7&<Y}{x  
    20% >       0.46553746                 ,y[w`Q\  
    10% >       0.50064115 O _^Y*!  
    eOUEhpE  
    最后这个数值是MTF值呢，还是MTF的公差？ qfgw^2aUa  
    |h2=9\:]  
    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？？？   -dH]_  
    ~PedR=Y0n  
    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  : \VX~'pkrd/  
    90% >       0.20977951                 058+_xX  
    80% >       0.22748071                 6DG:imGl  
    50% >       0.38667627                 I(dMiL  
    20% >       0.46553746                 ;ip"V 0`  
    10% >       0.50064115 {rG`Upp  
    ....... 2I#4jy/g  
    *SX'Or,  
    xNh#=6__9  
    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   6s833Tmb&r  
    Mode                : Sensitivities ai(<"|(  
    Sampling            : 2 HN\Zrb  
    Nominal Criterion   : 0.54403234 XB)e;R  
    Test Wavelength     : 0.6328 0(|BQ'4~H  
    FKd5]am  
    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？ 5#.uA_Fov  
    S<f&?\wK=v  
    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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