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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 [0D .K}7|  
    YLn?.sV{[0  
    c6]D-YNF G  
    -v|qZ'  
    然后添加了默认公差分析，基本没变 1|-Dj|  
    wZZt  
    G+\GaY[  
    fPW@{~t  
    然后运行分析的结果如下： q{;:SgZ  
    ,:\|7F  
    Analysis of Tolerances yY&I dE  
    p0<\G  
    File : E:\光学设计资料\zemax练习\f500.ZMX N^:9Fz  
    Title: 1c{DY  
    Date : TUE JUN 21 2011 e'D&8z_;  
    sY f~c0${  
    Units are Millimeters. l8#EM1g-  
    All changes are computed using linear differences. 3n}?bY8@5_  
    7o5BXF  
    Paraxial Focus compensation only. NGOfb  
    (;^syJrh  
    WARNING: Solves should be removed prior to tolerancing. @@ %.t|=  
    i5,kd~%O  
    Mnemonics:  p|D/;Mk  
    TFRN: Tolerance on curvature in fringes. (mtk 4  
    TTHI: Tolerance on thickness. )gy!GK  
    TSDX: Tolerance on surface decentering in x. j^rIH#V   
    TSDY: Tolerance on surface decentering in y. i9][N5\$  
    TSTX: Tolerance on surface tilt in x (degrees). M{hg0/}sUW  
    TSTY: Tolerance on surface tilt in y (degrees). 54li^   
    TIRR: Tolerance on irregularity (fringes). W#WVfr  
    TIND: Tolerance on Nd index of refraction. {8,J@9NU  
    TEDX: Tolerance on element decentering in x. l}sjD[2  
    TEDY: Tolerance on element decentering in y. :yjKL^G>  
    TETX: Tolerance on element tilt in x (degrees). /HRFAqep  
    TETY: Tolerance on element tilt in y (degrees). _8UDT^?8,  
    |R\>@Mg#B  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 2'MZ s]??w  
    *>qp:;,DKP  
    WARNING: Boundary constraints on compensators will be ignored. _&ks1cw  
    z]D69O b  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 8k1Dj1@0z  
    Mode                : Sensitivities ^iw'^6~  
    Sampling            : 2 tc{s B\&-  
    Nominal Criterion   : 0.54403234 |T)6yDL  
    Test Wavelength     : 0.6328 2Gaa(rJ5o  
    h6`6tk  
    @xYlS5{  
    Fields: XY Symmetric Angle in degrees >y:,9;  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY \<TXS)w]  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 R>mmoG}MQ[  
    h/hmlnOQl  
    Sensitivity Analysis: tQYM&6g  
    +<3X J7D  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| *QQzvhk  
    Type                      Value      Criterion        Change          Value      Criterion        Change !s?nJ(p  
    Fringe tolerance on surface 1 K':;%~I  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 cI?8RF(;  
    Change in Focus                :      -0.000000                            0.000000 3Xy-r=N.l  
    Fringe tolerance on surface 2 &/]Fc{]^$f  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 x!58cS*  
    Change in Focus                :       0.000000                            0.000000 (uZ&V7l  
    Fringe tolerance on surface 3 mah JSz(3  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 K\6u9BYG  
    Change in Focus                :      -0.000000                            0.000000 ^)*-Bo)I  
    Thickness tolerance on surface 1 7f!YoW;1  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 TOXfWEU3>  
    Change in Focus                :       0.000000                            0.000000 8jo p_PG'  
    Thickness tolerance on surface 2 !SdSE^lz`  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 6){]1h"  
    Change in Focus                :       0.000000                           -0.000000 ?FF4zI~  
    Decenter X tolerance on surfaces 1 through 3 ]B3=lc"  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 [dIXR  
    Change in Focus                :       0.000000                            0.000000 X1-'COQS%&  
    Decenter Y tolerance on surfaces 1 through 3 -^h' >.  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ~T,c"t2  
    Change in Focus                :       0.000000                            0.000000 .ndCfdy~  
    Tilt X tolerance on surfaces 1 through 3 (degrees) [)zP6\I  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 K<ft2anY5  
    Change in Focus                :       0.000000                            0.000000 n+q!l&&  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) /-+xQn]  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 :hFIl0$,"3  
    Change in Focus                :       0.000000                            0.000000 oO|KEY(  
    Decenter X tolerance on surface 1 ,*hLFaR-  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ![_*(8v}S  
    Change in Focus                :       0.000000                            0.000000 KZ ;k)O.Ov  
    Decenter Y tolerance on surface 1 _ff`y  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 z(Pe,zES  
    Change in Focus                :       0.000000                            0.000000 ^!ZC?h!rG  
    Tilt X tolerance on surface (degrees) 1  SVs_dG$  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 D rHV G  
    Change in Focus                :       0.000000                            0.000000 X"e5 Y!:M-  
    Tilt Y tolerance on surface (degrees) 1 GyIT{M}KV  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 CpeU5 o@  
    Change in Focus                :       0.000000                            0.000000 e2t-4} ww  
    Decenter X tolerance on surface 2 b TM{l.Aq3  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 fW3(&@  
    Change in Focus                :       0.000000                            0.000000 Xr$J9*Jk-  
    Decenter Y tolerance on surface 2 pU%n]]qF  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 IsM}' .  
    Change in Focus                :       0.000000                            0.000000 1&)?JZhg  
    Tilt X tolerance on surface (degrees) 2 4Thn])%I  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 4@n1Uk  
    Change in Focus                :       0.000000                            0.000000 _c*=4y  
    Tilt Y tolerance on surface (degrees) 2 f~y%%+{p  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 G{ sOR  
    Change in Focus                :       0.000000                            0.000000 ~yfNxH~k  
    Decenter X tolerance on surface 3 UU mTOJr  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Nj xoTLI  
    Change in Focus                :       0.000000                            0.000000 -tHU6s,  
    Decenter Y tolerance on surface 3 _w/EP  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 %g$V\zmU  
    Change in Focus                :       0.000000                            0.000000 +"cq(Y@  
    Tilt X tolerance on surface (degrees) 3 A3no~)wZn  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 1[qLA!+  
    Change in Focus                :       0.000000                            0.000000 [los dnH^?  
    Tilt Y tolerance on surface (degrees) 3 Vq5k+3W+  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Wm"4Ae:B  
    Change in Focus                :       0.000000                            0.000000 Iw&vTU=2  
    Irregularity of surface 1 in fringes G_{&sa  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 C8e !H  
    Change in Focus                :       0.000000                            0.000000 D 38$`j  
    Irregularity of surface 2 in fringes Lz!,kwg  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 TI#''XCB5  
    Change in Focus                :       0.000000                            0.000000 "B4;,+4kR  
    Irregularity of surface 3 in fringes =Z+nz^'b  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 GCX G/k?w:  
    Change in Focus                :       0.000000                            0.000000 *4xat:@{{  
    Index tolerance on surface 1 TRQF^P3o  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ^G.Xc\^w:  
    Change in Focus                :       0.000000                            0.000000 OK6] e3UO  
    Index tolerance on surface 2 =aj/,Q]  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 8lb%eb]U  
    Change in Focus                :       0.000000                           -0.000000 `m>*d!h=  
    7_Z#m (  
    Worst offenders: Q`D~5ci  
    Type                      Value      Criterion        Change %K` % *D  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 LbG_z =A  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Q/I! }C4  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ? glSC$b  
    TSTX   2             0.20000000     0.35349910    -0.19053324 #iWSDy  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 P%=#^T&`}  
    TSTY   1             0.20000000     0.42678383    -0.11724851 sqJSSNt  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 mc_ch$r!  
    TSTX   1             0.20000000     0.42678383    -0.11724851 lR[qqFR  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ("+}=*?OF3  
    TSTY   3             0.20000000     0.42861670    -0.11541563 6s\Kt3=  
    /.i.TQ]  
    Estimated Performance Changes based upon Root-Sum-Square method: Tekfw  
    Nominal MTF                 :     0.54403234 & )vC;$vD`  
    Estimated change            :    -0.36299231 0 79'(%  
    Estimated MTF               :     0.18104003 gk+h8 LZ  
    Nwt" \3  
    Compensator Statistics: Eam  
    Change in back focus: [y)`k@  
    Minimum            :        -0.000000 T G{k0cdOT  
    Maximum            :         0.000000 x.zbD8l/9  
    Mean               :        -0.000000 {]_r W/  
    Standard Deviation :         0.000000 )\be2^p  
    \ZhfgE8{%  
    Monte Carlo Analysis: UkHY[M7;  
    Number of trials: 20 ,0~9dS   
    ^#1.l=s  
    Initial Statistics: Normal Distribution & jczO-R^  
    0=q;@OIf  
      Trial       Criterion        Change d&u]WVU  
          1     0.42804416    -0.11598818 P*@2.#oO  
    Change in Focus                :      -0.400171 t" 7yNs(I  
          2     0.54384387    -0.00018847 Wg0g/  
    Change in Focus                :       1.018470 4jBC9b}O  
          3     0.44510003    -0.09893230 Ru>uL@w  
    Change in Focus                :      -0.601922 nJ"YIT1K]p  
          4     0.18154684    -0.36248550 HJ[/|NZU$  
    Change in Focus                :       0.920681 _uKZMl  
          5     0.28665820    -0.25737414 d,tU#N{Q6  
    Change in Focus                :       1.253875 !F4@KAv  
          6     0.21263372    -0.33139862 n?ctLbg  
    Change in Focus                :      -0.903878 {^rs#, W  
          7     0.40051424    -0.14351809 7aYn0_NKp  
    Change in Focus                :      -1.354815 a/U2xq{x  
          8     0.48754161    -0.05649072 -,aeM~  
    Change in Focus                :       0.215922 hf<^/@^tK  
          9     0.40357468    -0.14045766 ;?~$h-9)  
    Change in Focus                :       0.281783 >'xGp7}y  
         10     0.26315315    -0.28087919 ND,Kldji  
    Change in Focus                :      -1.048393 >,gvb5  
         11     0.26120585    -0.28282649 `^Eae  
    Change in Focus                :       1.017611 >Clh] ;K  
         12     0.24033815    -0.30369419 { "xln/  
    Change in Focus                :      -0.109292 X3:XTuV   
         13     0.37164046    -0.17239188 c8M2 ^{O,`  
    Change in Focus                :      -0.692430 qdG~!h7j  
         14     0.48597489    -0.05805744 L9ap(  
    Change in Focus                :      -0.662040 P^Q[-e{  
         15     0.21462327    -0.32940907 2Nm>5l  
    Change in Focus                :       1.611296 m6yIR6H  
         16     0.43378226    -0.11025008 OxtOd\0$  
    Change in Focus                :      -0.640081 d:q +  
         17     0.39321881    -0.15081353 s/e"'Hz  
    Change in Focus                :       0.914906 xc:!cA{V  
         18     0.20692530    -0.33710703 9F- )r'  
    Change in Focus                :       0.801607 ai^4'{#zi  
         19     0.51374068    -0.03029165 Hb(B?!M)  
    Change in Focus                :       0.947293 _l], "[d  
         20     0.38013374    -0.16389860 u=NS sTP&  
    Change in Focus                :       0.667010 /.eeO k  
    \[>9UC%  
    Number of traceable Monte Carlo files generated: 20 Dbaf0  
    tYqs~B3  
    Nominal     0.54403234 LrV{j?2@  
    Best        0.54384387    Trial     2 {"H2 :-t<  
    Worst       0.18154684    Trial     4 nGf);U#K  
    Mean        0.35770970 &G>(9  
    Std Dev     0.11156454 ]PP:oriWl  
    L~/qGDXC?  
    ]$ b<Gs  
    Compensator Statistics: xf>z@)e  
    Change in back focus: XC3Kh^  
    Minimum            :        -1.354815 G02m/8g3  
    Maximum            :         1.611296 b2^AP\: k  
    Mean               :         0.161872 ~; OYtz  
    Standard Deviation :         0.869664 4^' 3&vu  
    ^, i>'T  
    90% >       0.20977951               %_aMl  
    80% >       0.22748071               6V+ qnUk  
    50% >       0.38667627               O0*e)i8  
    20% >       0.46553746               TfZ6F8|B  
    10% >       0.50064115                V' 2EPYB  
    W~B5>;y  
    End of Run. Lj %{y.Rj  
    m:O(+Fl  
    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 FM5e+$>@  
    RQvVR  
    - ?!:{UXl  
    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 >Dg#9  
    )W&>[B  
    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                 ^2M!*p&h  
    80% >       0.22748071                 {rkn q_;0  
    50% >       0.38667627                 c 8QnN:n  
    20% >       0.46553746                 c! H 9yk  
    10% >       0.50064115 3On JWuVfZ  
    R+$8w2#  
    最后这个数值是MTF值呢，还是MTF的公差？  i j&p4  
    < 3 j~=-  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   ^4`&EF  
    C'9 1d7E  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : ;^.9#B,<  
    90% >       0.20977951                 mSj76' L#  
    80% >       0.22748071                 7dhn'TW  
    50% >       0.38667627                 V9$-twhu  
    20% >       0.46553746                 s@M  
    10% >       0.50064115 \R;K>c7=  
    ....... uk{J@&F  
    KH)pJG|NY  
    zuj;T,R;  
    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   ].c@Gm_(  
    Mode                : Sensitivities dTgM"k  
    Sampling            : 2 6A@Lj*:2m  
    Nominal Criterion   : 0.54403234 v @_?iC"`  
    Test Wavelength     : 0.6328 |<2JQ[]  
    ^8U6"O6|X  
    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？ [j1^$n 8V  
    (#lm#?<)  
    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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