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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 0\B{~1(^  
    J|%bRLX@>  
    R*6B@<p,i  
    /7:+.#Ag`  
    然后添加了默认公差分析，基本没变 YhS_ ,3E  
    JPng !tvR  
    h,]VWG  
    *h3iAcM8  
    然后运行分析的结果如下： bcpsjUiy#  
    kV4Oq.E  
    Analysis of Tolerances ~T-uk  
    A>2_I)  
    File : E:\光学设计资料\zemax练习\f500.ZMX `8RKpZv&  
    Title: ()O&O+R|)  
    Date : TUE JUN 21 2011 ,uPcQ  
    nw%`CnzT  
    Units are Millimeters. [0]A-#J  
    All changes are computed using linear differences. BK6 X)1R  
    q^Oj/ws  
    Paraxial Focus compensation only. OHsA]7S  
    pq&[cA_w  
    WARNING: Solves should be removed prior to tolerancing. c"Vp5lo0  
    xz.Jmv  
    Mnemonics: -C3[:g  
    TFRN: Tolerance on curvature in fringes. #u8#< ,w  
    TTHI: Tolerance on thickness. yGAFQ|+  
    TSDX: Tolerance on surface decentering in x. U&V u%+B  
    TSDY: Tolerance on surface decentering in y. g3>>gu#0DC  
    TSTX: Tolerance on surface tilt in x (degrees). {ilz[LM8(  
    TSTY: Tolerance on surface tilt in y (degrees). <p*k-mfr  
    TIRR: Tolerance on irregularity (fringes). ,p#B5Dif/  
    TIND: Tolerance on Nd index of refraction. rqqd} kA  
    TEDX: Tolerance on element decentering in x. VwPoQ9pIS  
    TEDY: Tolerance on element decentering in y. {5<fvMO!6  
    TETX: Tolerance on element tilt in x (degrees). :-JryiI  
    TETY: Tolerance on element tilt in y (degrees). LR>s2zu-  
    f pq|mY  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. %]DA4W  
    +,LWyvc'  
    WARNING: Boundary constraints on compensators will be ignored. @*Ry`)T  
    PS+~JwDUc  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm PgT8 1u  
    Mode                : Sensitivities 111A e *U  
    Sampling            : 2 -mG`* 0  
    Nominal Criterion   : 0.54403234 Zp~yemERr  
    Test Wavelength     : 0.6328 igk<]AwxS  
    T>rmm7F  
    BO G.[?yx  
    Fields: XY Symmetric Angle in degrees $Vq5U9-  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY WK(X/!1/k  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 K3[+L`pz  
    pa+'0Y]71  
    Sensitivity Analysis: DR}I+<*%aD  
    aXJ/"k #Tl  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| kodd7 AD  
    Type                      Value      Criterion        Change          Value      Criterion        Change (b<0=U   
    Fringe tolerance on surface 1 7KhS{w6  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 # 5)/B  
    Change in Focus                :      -0.000000                            0.000000 eDZ8F^0  
    Fringe tolerance on surface 2 nf 8V:y4  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 8TeOh 1\  
    Change in Focus                :       0.000000                            0.000000 . c+m(Pk  
    Fringe tolerance on surface 3 7` ;sX?R  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 "N6HX*  
    Change in Focus                :      -0.000000                            0.000000 ge GhM>G  
    Thickness tolerance on surface 1 \\KjiT'  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 NOXP}M  
    Change in Focus                :       0.000000                            0.000000 DMG~56cTO,  
    Thickness tolerance on surface 2 '!7>*<  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Nyy&'\`!  
    Change in Focus                :       0.000000                           -0.000000 U,EoCAm>  
    Decenter X tolerance on surfaces 1 through 3 {&IB[Y6  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #[{{&sN  
    Change in Focus                :       0.000000                            0.000000 QTi@yT:  
    Decenter Y tolerance on surfaces 1 through 3 pS ](Emn`.  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 =IsmPQKi  
    Change in Focus                :       0.000000                            0.000000 y2#>a8SRS  
    Tilt X tolerance on surfaces 1 through 3 (degrees) kWZY+jyt P  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 w_Slg&S  
    Change in Focus                :       0.000000                            0.000000 z0<E3t  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) O?Bf (y  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Bc"MOSV0  
    Change in Focus                :       0.000000                            0.000000 `K.C>68  
    Decenter X tolerance on surface 1 B&6NjLV  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 jj2iF/  
    Change in Focus                :       0.000000                            0.000000 U+x^!{[/  
    Decenter Y tolerance on surface 1 (6ga*5<  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ` 5Kg[nB:  
    Change in Focus                :       0.000000                            0.000000 D:U6r^c  
    Tilt X tolerance on surface (degrees) 1 E.Xp\Dm71  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 3LLG#l )8  
    Change in Focus                :       0.000000                            0.000000 2lpPN[~d  
    Tilt Y tolerance on surface (degrees) 1 V&nB*U&s"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 I0 ~'z f  
    Change in Focus                :       0.000000                            0.000000 |gO7`F2  
    Decenter X tolerance on surface 2 N<:c*X  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .T9$O]:o  
    Change in Focus                :       0.000000                            0.000000 l&+O*=#Hh  
    Decenter Y tolerance on surface 2 z!3=.D  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 0>BxS9?w  
    Change in Focus                :       0.000000                            0.000000 j9 >[^t3U  
    Tilt X tolerance on surface (degrees) 2 3)EJws!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }S u j=oFp  
    Change in Focus                :       0.000000                            0.000000 eavn.I8J  
    Tilt Y tolerance on surface (degrees) 2 H_RfIX)X  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 \s*UUODWK  
    Change in Focus                :       0.000000                            0.000000 HXKM<E{j  
    Decenter X tolerance on surface 3 SPb +H19;  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 dXh[Ea^  
    Change in Focus                :       0.000000                            0.000000 aKriO  
    Decenter Y tolerance on surface 3 LRu,_2"  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 @\y{q;  
    Change in Focus                :       0.000000                            0.000000 (uvQ/!  
    Tilt X tolerance on surface (degrees) 3 nKm# kb  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 #]jl{K\f#X  
    Change in Focus                :       0.000000                            0.000000 W 94:%  
    Tilt Y tolerance on surface (degrees) 3 9?,i+\)qK@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 2X\Pw  
    Change in Focus                :       0.000000                            0.000000 <(jk}wa<  
    Irregularity of surface 1 in fringes Qf( A  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ej-A =avd  
    Change in Focus                :       0.000000                            0.000000 2/ 4zg  
    Irregularity of surface 2 in fringes .b]s Q'  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 i`gM> q&  
    Change in Focus                :       0.000000                            0.000000 6NX#=A  
    Irregularity of surface 3 in fringes (BLxK)0<"  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ^_ch%3}Im  
    Change in Focus                :       0.000000                            0.000000 Wm6qy6HR  
    Index tolerance on surface 1 J]TqH`MA  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 L=#NUNiXr  
    Change in Focus                :       0.000000                            0.000000 5FR#CQ  
    Index tolerance on surface 2 OWewV@VXR  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Qz[^J  
    Change in Focus                :       0.000000                           -0.000000 Li6|c*K'  
    z='%NZY  
    Worst offenders: U)8yd,qG[%  
    Type                      Value      Criterion        Change j $q5m 24L  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 j2Dw7"f3  
    TSTY   2             0.20000000     0.35349910    -0.19053324 pRun5 )7  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 yIKpyyC9H  
    TSTX   2             0.20000000     0.35349910    -0.19053324 33DP?nI}  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 csW\Q][  
    TSTY   1             0.20000000     0.42678383    -0.11724851 :*KTpTa  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 u$R5Q{H_  
    TSTX   1             0.20000000     0.42678383    -0.11724851 )7*'r@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ni2#20L  
    TSTY   3             0.20000000     0.42861670    -0.11541563 /8e}c`  
     "M5  
    Estimated Performance Changes based upon Root-Sum-Square method: 9PKXQp  
    Nominal MTF                 :     0.54403234 {d[Nc,AMb  
    Estimated change            :    -0.36299231 ^Ye(b7Gd  
    Estimated MTF               :     0.18104003 eY :"\c3  
    R0INpF';  
    Compensator Statistics: ~QbHp|g  
    Change in back focus: [<53_2]~  
    Minimum            :        -0.000000 {ze69 h  
    Maximum            :         0.000000 |2l-s 1|y  
    Mean               :        -0.000000 L4Jm8sy{  
    Standard Deviation :         0.000000 \B4H0f  
    "6'",  
    Monte Carlo Analysis: @6G)(NGD  
    Number of trials: 20 M v (Pp  
    tG$O[f@U6  
    Initial Statistics: Normal Distribution 7.Y;nem:(  
    ;F258/J  
      Trial       Criterion        Change yDqwz[v b  
          1     0.42804416    -0.11598818 3tf_\E+mIi  
    Change in Focus                :      -0.400171 u9@B&  
          2     0.54384387    -0.00018847 xZ {6!=4!  
    Change in Focus                :       1.018470 IRQtA ZV$  
          3     0.44510003    -0.09893230 F&6#j  
    Change in Focus                :      -0.601922 r[!~~yu/o  
          4     0.18154684    -0.36248550 O6Py  
    Change in Focus                :       0.920681 *:H,-@  
          5     0.28665820    -0.25737414 ;9j ]P56  
    Change in Focus                :       1.253875 0;TiNrzg  
          6     0.21263372    -0.33139862 eWDXV-xD  
    Change in Focus                :      -0.903878 Zeg'\&w0s  
          7     0.40051424    -0.14351809 Hy3J2p9.  
    Change in Focus                :      -1.354815 W5Z-s.o  
          8     0.48754161    -0.05649072 *Vl#]81~  
    Change in Focus                :       0.215922 <}WSYK,zUY  
          9     0.40357468    -0.14045766 tlQ6>v'  
    Change in Focus                :       0.281783 GG>53} 7{  
         10     0.26315315    -0.28087919 Q(f0S  
    Change in Focus                :      -1.048393 tM"vIz 05  
         11     0.26120585    -0.28282649 /}@F q  
    Change in Focus                :       1.017611 ]z'L1vQl7  
         12     0.24033815    -0.30369419 #|E#Rkw!  
    Change in Focus                :      -0.109292 qR cSB  
         13     0.37164046    -0.17239188 I+ |uyc  
    Change in Focus                :      -0.692430 "J,|),Yd  
         14     0.48597489    -0.05805744 Nmx\qJUR(  
    Change in Focus                :      -0.662040 FBl,Mky  
         15     0.21462327    -0.32940907 IB# ua:  
    Change in Focus                :       1.611296 ^4`x:6m  
         16     0.43378226    -0.11025008 TI3xt-/  
    Change in Focus                :      -0.640081 75;RAKGi  
         17     0.39321881    -0.15081353 lknj/i5L  
    Change in Focus                :       0.914906 cV>?*9z0  
         18     0.20692530    -0.33710703 q* lk9{>  
    Change in Focus                :       0.801607 Kc[^Pu  
         19     0.51374068    -0.03029165 Vw w 211  
    Change in Focus                :       0.947293 c<_1o!68  
         20     0.38013374    -0.16389860 C2R"96M7q  
    Change in Focus                :       0.667010 sBZn0h@  
    O83J[YuzjN  
    Number of traceable Monte Carlo files generated: 20 ;cf$u}+  
    =b$g_+  
    Nominal     0.54403234 D-@6 hWh~  
    Best        0.54384387    Trial     2 uH$hMg  
    Worst       0.18154684    Trial     4 {Yxvb**  
    Mean        0.35770970 8US35t:M  
    Std Dev     0.11156454 4OM ]8I!  
    vfqXHc unj  
    /{buFX2"}  
    Compensator Statistics: sRT5i9TQ  
    Change in back focus: hvTc( 0;mB  
    Minimum            :        -1.354815 x=rMjz-`_  
    Maximum            :         1.611296 -}TP)/ !,*  
    Mean               :         0.161872 P4"BX*x  
    Standard Deviation :         0.869664 'KmM %tN  
    Lfx a^0  
    90% >       0.20977951               HAE$Np|>a  
    80% >       0.22748071               GjEV]hqR  
    50% >       0.38667627               z}J~X%}e  
    20% >       0.46553746               w +UB XW  
    10% >       0.50064115                0* x ?rO?  
    @;9KP6d  
    End of Run. :@ &e~QP(  
    $o+@}B0)  
    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 ;gEEdx'&T  
    Ow?~+) 4  
    9u=]D> kb  
    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 hFoeVM[h  
    9*j"@Rm  
    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                 'u PI~l`g  
    80% >       0.22748071                 Tpnwwx[]:|  
    50% >       0.38667627                 <vg|8-,#m  
    20% >       0.46553746                 ,!AYeVq  
    10% >       0.50064115 e'|P^G>g  
    }+NlY D:qF  
    最后这个数值是MTF值呢，还是MTF的公差？ _B 4 N2t$  
    ?)qm=mebY  
    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？？？   B_c-@kl   
    ( F R  
    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  : SJI+$L\'  
    90% >       0.20977951                 kKSn^q L*  
    80% >       0.22748071                 Ll6|WhX  
    50% >       0.38667627                  W-U[7n  
    20% >       0.46553746                 Y'i_EX|  
    10% >       0.50064115 %xI,A'#  
    ....... g~=#8nJ  
    8:0.Pi(ln@  
    -RnQ8Iu o  
    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   w873: =  
    Mode                : Sensitivities cO !2|v8i  
    Sampling            : 2 PYz^9Ud 6g  
    Nominal Criterion   : 0.54403234 {__"Z<  
    Test Wavelength     : 0.6328 m48m5>  
    7*r7Q'  
    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？ k%)QrRnB  
     *w538Vb  
    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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