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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 #/s7\2  
    |?yE^$a  
    5\3 swP_7  
    E4Zxv*  
    然后添加了默认公差分析，基本没变 `GS cRhbh  
    '}CN?f|.  
    l.uN$B  
    ->3uOF!q  
    然后运行分析的结果如下： &t_A0z  
    yWmrdvL  
    Analysis of Tolerances [9J:bD  
    $$\V 2%v  
    File : E:\光学设计资料\zemax练习\f500.ZMX OOfy Gvs  
    Title: }pK v.  
    Date : TUE JUN 21 2011 ~W3:xnBEk  
    FvAbh]/4  
    Units are Millimeters. '(TmV#3  
    All changes are computed using linear differences. BPh".RJ  
    -EVs@:3]j  
    Paraxial Focus compensation only. y]7%$* <  
    @"0uM?_)-  
    WARNING: Solves should be removed prior to tolerancing. fw:7U %MGv  
    HS(U4   
    Mnemonics: J ZA*{n2  
    TFRN: Tolerance on curvature in fringes. 'H!V54 \j  
    TTHI: Tolerance on thickness. 2'Y{FY_Z  
    TSDX: Tolerance on surface decentering in x. [0wP\{%  
    TSDY: Tolerance on surface decentering in y. <c(&T<$  
    TSTX: Tolerance on surface tilt in x (degrees). <8*A\&  
    TSTY: Tolerance on surface tilt in y (degrees). :q(D(mK  
    TIRR: Tolerance on irregularity (fringes). .Jptj  
    TIND: Tolerance on Nd index of refraction. %uj[`  
    TEDX: Tolerance on element decentering in x. &jt02+Hj'  
    TEDY: Tolerance on element decentering in y. X:U=MWc>  
    TETX: Tolerance on element tilt in x (degrees). Q7L)f71i  
    TETY: Tolerance on element tilt in y (degrees). 3Fgz)*Gu]  
    o>.AdZby  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. )=y.^@UT@  
    vUqe.?5  
    WARNING: Boundary constraints on compensators will be ignored. 9uKOR7.zbo  
    i},d[  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm `|&\e_"DE  
    Mode                : Sensitivities gji*Wq  
    Sampling            : 2 q?(A!1(u  
    Nominal Criterion   : 0.54403234 :MK:TJV  
    Test Wavelength     : 0.6328 hN[X 1*  
    hr%U>U9F  
    xna7kA  
    Fields: XY Symmetric Angle in degrees 7,f:Qi@g  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY CcBQo8!G  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 4C6=77Jr  
    ";756'>  
    Sensitivity Analysis: :-(U%`a[  
    !X%S)VSMU  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| WUzS lZq  
    Type                      Value      Criterion        Change          Value      Criterion        Change K!9y+%01  
    Fringe tolerance on surface 1 3'.! +#  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 JIVo=5c}  
    Change in Focus                :      -0.000000                            0.000000 y:~eU  
    Fringe tolerance on surface 2 L^6"' #  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 NS h%t+XU]  
    Change in Focus                :       0.000000                            0.000000 P`7ojXy  
    Fringe tolerance on surface 3 UP}feN  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 B^H4Q 4-  
    Change in Focus                :      -0.000000                            0.000000 :sU!PF[<  
    Thickness tolerance on surface 1 fDL3:%D  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 9*BoYFw92*  
    Change in Focus                :       0.000000                            0.000000 jMTRcj];(  
    Thickness tolerance on surface 2 D% oueW  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 NAJ '><2  
    Change in Focus                :       0.000000                           -0.000000 lB=(8.  
    Decenter X tolerance on surfaces 1 through 3 KrJ5"1=  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ThjUiuWe  
    Change in Focus                :       0.000000                            0.000000 sq6>DuBZz  
    Decenter Y tolerance on surfaces 1 through 3 t-'I`I  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Tnf&pu#5  
    Change in Focus                :       0.000000                            0.000000 , - QR  
    Tilt X tolerance on surfaces 1 through 3 (degrees) u9esdOv  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $Vo/CZW7  
    Change in Focus                :       0.000000                            0.000000 #E*@/ p/  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) i:C.8hmAE  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314  -PcS(  
    Change in Focus                :       0.000000                            0.000000 z`c%?_EK  
    Decenter X tolerance on surface 1 /TzNdIv  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .UNF~}^H  
    Change in Focus                :       0.000000                            0.000000 _2NN 1/F5  
    Decenter Y tolerance on surface 1 AEB/8%l};v  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 -kWO2  
    Change in Focus                :       0.000000                            0.000000 uCY(:;[<  
    Tilt X tolerance on surface (degrees) 1 [Bl $IfU  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 n;e."^5  
    Change in Focus                :       0.000000                            0.000000 R1I I k  
    Tilt Y tolerance on surface (degrees) 1 U* -% M  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Tm (Q@  
    Change in Focus                :       0.000000                            0.000000 ,h3269$J  
    Decenter X tolerance on surface 2 OG0r4^6Ly  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 co \[{}}  
    Change in Focus                :       0.000000                            0.000000 K#_~ !C4L  
    Decenter Y tolerance on surface 2 _{N0OX  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 { z-5GH|  
    Change in Focus                :       0.000000                            0.000000 6\; 4 4,3  
    Tilt X tolerance on surface (degrees) 2 }rO?5  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 sjkWz2]S  
    Change in Focus                :       0.000000                            0.000000 pYYqGv^oa  
    Tilt Y tolerance on surface (degrees) 2 qFV;n6&V  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 aQz|!8Is  
    Change in Focus                :       0.000000                            0.000000 i58ZV`Rk`  
    Decenter X tolerance on surface 3 RY>)eGJ  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 A ~qW.  
    Change in Focus                :       0.000000                            0.000000 &{X{36  
    Decenter Y tolerance on surface 3 m-:8jA?  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 vpZu.#5c  
    Change in Focus                :       0.000000                            0.000000 EJ WOXxU  
    Tilt X tolerance on surface (degrees) 3 :iP>z}h  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 G3Idxs  
    Change in Focus                :       0.000000                            0.000000 Mfnlue](  
    Tilt Y tolerance on surface (degrees) 3 J xA^DH  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;X?Ah  
    Change in Focus                :       0.000000                            0.000000 L9E;Uii0  
    Irregularity of surface 1 in fringes 0_YxZS\  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 y #hga5  
    Change in Focus                :       0.000000                            0.000000 F{#N6,T  
    Irregularity of surface 2 in fringes b:N^Fe  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 xi '72  
    Change in Focus                :       0.000000                            0.000000 l.__10{  
    Irregularity of surface 3 in fringes zvek2\*rO  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 d$2@,  
    Change in Focus                :       0.000000                            0.000000 /#S4espE  
    Index tolerance on surface 1 nz,Mqol  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ig2{lEkF  
    Change in Focus                :       0.000000                            0.000000 .V5q$5j  
    Index tolerance on surface 2 $nUd\B$.=  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 N?MJ#lC F  
    Change in Focus                :       0.000000                           -0.000000 OaD Alrm  
    >P6^k!R1y  
    Worst offenders: .){e7U6b{  
    Type                      Value      Criterion        Change :z izca4  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 5~_eN  
    TSTY   2             0.20000000     0.35349910    -0.19053324 (lyt"Ty  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 "D ts*  
    TSTX   2             0.20000000     0.35349910    -0.19053324 SREDM  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 9;E%U2T7  
    TSTY   1             0.20000000     0.42678383    -0.11724851 U^E  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 OqfhCNAY  
    TSTX   1             0.20000000     0.42678383    -0.11724851 oso1uAOfp  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 e67c:Z  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ]FY?_DGOA  
    }m=t zHB*  
    Estimated Performance Changes based upon Root-Sum-Square method: 4*p_s8> >  
    Nominal MTF                 :     0.54403234 5 {T9*  
    Estimated change            :    -0.36299231 9IS1.3  
    Estimated MTF               :     0.18104003 Wo:zU  
    T..N*6<X  
    Compensator Statistics: hj^G} 4  
    Change in back focus: IqvqvHxLX  
    Minimum            :        -0.000000 C?GvTc  
    Maximum            :         0.000000 6=Y3(#Ddt  
    Mean               :        -0.000000 n9<roH  
    Standard Deviation :         0.000000 tJ?qcT?  
    2 pM  
    Monte Carlo Analysis: ?V&Ld$db  
    Number of trials: 20 /t$+Af,}  
    W%Y.SP$Y  
    Initial Statistics: Normal Distribution f"5lOzj`C  
    v7{ P].M  
      Trial       Criterion        Change D-TNFYYy2  
          1     0.42804416    -0.11598818 "VT{1(]t  
    Change in Focus                :      -0.400171 ;#5-.z  
          2     0.54384387    -0.00018847 ugIm:bg&  
    Change in Focus                :       1.018470 kbIY%\QSO  
          3     0.44510003    -0.09893230 *([0"  
    Change in Focus                :      -0.601922 tMD^$E"C  
          4     0.18154684    -0.36248550 2- Npw%;  
    Change in Focus                :       0.920681 wf~5lpI[  
          5     0.28665820    -0.25737414 ~.PPf/ Z8]  
    Change in Focus                :       1.253875 vxbH^b  
          6     0.21263372    -0.33139862 |: 7EJkKZ  
    Change in Focus                :      -0.903878 ])Q9=?Sd}  
          7     0.40051424    -0.14351809 OEy:#9<'  
    Change in Focus                :      -1.354815 _g^K$+F'}  
          8     0.48754161    -0.05649072 {a+Fx}W  
    Change in Focus                :       0.215922 2R_opbw  
          9     0.40357468    -0.14045766 K]H"qG.K  
    Change in Focus                :       0.281783 3<KZ.hr  
         10     0.26315315    -0.28087919 \28b_,i+  
    Change in Focus                :      -1.048393 K%[}[.cW  
         11     0.26120585    -0.28282649 Mv7w5vTl  
    Change in Focus                :       1.017611 WL)_8!  
         12     0.24033815    -0.30369419 J[& 7,}  
    Change in Focus                :      -0.109292 {|Mxvp*Hg  
         13     0.37164046    -0.17239188 wRV`v$*6  
    Change in Focus                :      -0.692430 E5Snl#Gl\0  
         14     0.48597489    -0.05805744 =#POMK".6  
    Change in Focus                :      -0.662040 ~ X]"P4 u  
         15     0.21462327    -0.32940907 ?vht~5'  
    Change in Focus                :       1.611296 +s+PnZ%0V  
         16     0.43378226    -0.11025008 OVQxZ~uQ  
    Change in Focus                :      -0.640081  |(J ?#?  
         17     0.39321881    -0.15081353 m 1'&{O:  
    Change in Focus                :       0.914906 cjy0s+>>  
         18     0.20692530    -0.33710703 ${TB2q}%  
    Change in Focus                :       0.801607 J#Ne:Aj_  
         19     0.51374068    -0.03029165 IxEQh)J X  
    Change in Focus                :       0.947293 EvH(Po h  
         20     0.38013374    -0.16389860 %b-;Rn  
    Change in Focus                :       0.667010 %~B)~|h  
    XDrlJvrPL  
    Number of traceable Monte Carlo files generated: 20 Yn[EI7D  
    =CG!"&T  
    Nominal     0.54403234 @ @3)D%h  
    Best        0.54384387    Trial     2 Q8gdI  
    Worst       0.18154684    Trial     4 _Sk< S  
    Mean        0.35770970 8eS@<[[F#  
    Std Dev     0.11156454 K;ry4/Vap  
    ?Qo_ KQ%sn  
    iaa (ce  
    Compensator Statistics: {*ko=77$*  
    Change in back focus: O'&X aaZV  
    Minimum            :        -1.354815 -+ IX[  
    Maximum            :         1.611296 uc"[qT(X  
    Mean               :         0.161872 of[|b{Ze4~  
    Standard Deviation :         0.869664 ( 7Ca\H3$  
    ,h^;~|GT  
    90% >       0.20977951               N8L)KgM5#7  
    80% >       0.22748071               _!CvtUU0Vv  
    50% >       0.38667627               ,39$iHk  
    20% >       0.46553746               #r:Kg&W2FO  
    10% >       0.50064115                `aX}.{.!  
    N?U&(@p  
    End of Run. +}G>M=t::  
     1+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 G"UH4n[1ur  
     7 zP  
    U*qK*"k  
    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 M;RnH##W  
    Bu >yRL=*  
    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                 m{yNnJ3O  
    80% >       0.22748071                 W9:{pQG  
    50% >       0.38667627                 ;0X|*w1JO  
    20% >       0.46553746                 \3Ald.EqtM  
    10% >       0.50064115 L!8?2 \5  
    I(kIHjV|  
    最后这个数值是MTF值呢，还是MTF的公差？ [Oy2&C  
    hpi_0lMkI  
    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？？？   VflPNzixb!  
    7Caap/L:  
    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  : TK?N^ly  
    90% >       0.20977951                 d#,V^  
    80% >       0.22748071                 R,Uy3N  
    50% >       0.38667627                 dOgM9P  
    20% >       0.46553746                 j`M<M[C*4N  
    10% >       0.50064115 wm[d5A4  
    ....... } j@@  
    u+FftgA  
    ?bi^h/ f  
    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   u3!!_~6,z  
    Mode                : Sensitivities .b)(_*  
    Sampling            : 2 $l"(tB7d  
    Nominal Criterion   : 0.54403234 2xm?,p`  
    Test Wavelength     : 0.6328 I#e*,#'S  
    LM`#S/h  
    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(i5K  
    :/Zh[Q@EG  
    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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