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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 7kq6VS;p  
    /\ u1q<  
    J8#3?Lp  
    jrZH1dvE  
    然后添加了默认公差分析，基本没变 w .+B h  
    4">C0m;ks  
    uG{/yJeU  
    _ a -At  
    然后运行分析的结果如下： Q/^a(   
    dA=T+u  
    Analysis of Tolerances %w#8t#[,6  
    7xoq:oP-}N  
    File : E:\光学设计资料\zemax练习\f500.ZMX 0S$6j-"  
    Title: xay~fD  
    Date : TUE JUN 21 2011 6 6Bx,]"6  
    ^Kfm(E  
    Units are Millimeters. Tv /?-`Y  
    All changes are computed using linear differences. @D7/u88|  
    8Y&_X0T|  
    Paraxial Focus compensation only. @lTd,V5f  
    Ah Rvyj  
    WARNING: Solves should be removed prior to tolerancing. Pe)SugCs  
    <-O^ol,fX  
    Mnemonics: \3 M%vJ  
    TFRN: Tolerance on curvature in fringes. Ys+NIV#Q  
    TTHI: Tolerance on thickness. NkY7Hg0  
    TSDX: Tolerance on surface decentering in x. JHCXUT-r{  
    TSDY: Tolerance on surface decentering in y. ^Q5advxuq  
    TSTX: Tolerance on surface tilt in x (degrees). $i"IOp  
    TSTY: Tolerance on surface tilt in y (degrees). #v}pn2g%>  
    TIRR: Tolerance on irregularity (fringes). TpAso[r  
    TIND: Tolerance on Nd index of refraction. 9Je+|+s]  
    TEDX: Tolerance on element decentering in x. ">x"BP  
    TEDY: Tolerance on element decentering in y. H rI(uZ]  
    TETX: Tolerance on element tilt in x (degrees). @nxpcHj  
    TETY: Tolerance on element tilt in y (degrees). `!lQd}W  
    &"mWi-Mpl  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. -AZ\u\xCB  
    _l{_n2D-  
    WARNING: Boundary constraints on compensators will be ignored. 0q_?<v_ 1  
    {I]>!V0j!  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm p%ZAVd*|#V  
    Mode                : Sensitivities NXSjN~aG2  
    Sampling            : 2 v9XevLs  
    Nominal Criterion   : 0.54403234 y[d>7fcf  
    Test Wavelength     : 0.6328 BT* {&'\/  
    ;(Kj-,>  
    $64sf?aZ>#  
    Fields: XY Symmetric Angle in degrees OSIf>1  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY \.Z /  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 xy+hrbD)j  
    't'2z  
    Sensitivity Analysis: \fJ _,  
    p"d_+  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| oN&U@N/>aU  
    Type                      Value      Criterion        Change          Value      Criterion        Change kadw1sYj  
    Fringe tolerance on surface 1 Fr)6<9%xVm  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 :YM1p&|fS  
    Change in Focus                :      -0.000000                            0.000000 !;E{D  
    Fringe tolerance on surface 2 tqzr +  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 b0uWUI(=  
    Change in Focus                :       0.000000                            0.000000 YWhp4`m  
    Fringe tolerance on surface 3 uL |O<  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ASUL g{  
    Change in Focus                :      -0.000000                            0.000000 sPRo=LB  
    Thickness tolerance on surface 1 DH!_UV  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ,Y`TP4Ip  
    Change in Focus                :       0.000000                            0.000000 xew s~74L  
    Thickness tolerance on surface 2 A75z/O{  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 e~PAi8B5  
    Change in Focus                :       0.000000                           -0.000000 A O3MlK9t  
    Decenter X tolerance on surfaces 1 through 3 $aDkZj  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 PYr'1D'  
    Change in Focus                :       0.000000                            0.000000 UNyk, #4  
    Decenter Y tolerance on surfaces 1 through 3 1R"Z+tNB  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 I\P w`  
    Change in Focus                :       0.000000                            0.000000 |Pq z0n=v  
    Tilt X tolerance on surfaces 1 through 3 (degrees) x bD]EC  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 W3w$nV  
    Change in Focus                :       0.000000                            0.000000 uQiW{Kja2  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ,$bK)|pGV  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 jh"YHe/X  
    Change in Focus                :       0.000000                            0.000000 *&tv(+P  
    Decenter X tolerance on surface 1 MQq!<?/  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .05x=28n%  
    Change in Focus                :       0.000000                            0.000000 mO&zE;/[  
    Decenter Y tolerance on surface 1 CtE <9?  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ,L-G-V+  
    Change in Focus                :       0.000000                            0.000000 0`Y"xN`'i  
    Tilt X tolerance on surface (degrees) 1 }TRVCF1  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ?6//'bO:%  
    Change in Focus                :       0.000000                            0.000000 z9JZV`dNgz  
    Tilt Y tolerance on surface (degrees) 1 /-&2>4I  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 5 #Et.P'  
    Change in Focus                :       0.000000                            0.000000 3Uy(d,N  
    Decenter X tolerance on surface 2 ')>D*e  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 U(5Yg  
    Change in Focus                :       0.000000                            0.000000 b}J,&eYD  
    Decenter Y tolerance on surface 2 lK3{~ \J-  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 /7igPNhx  
    Change in Focus                :       0.000000                            0.000000 Ir6g"kwCKq  
    Tilt X tolerance on surface (degrees) 2 Xd5uF/w  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 C=&;4In  
    Change in Focus                :       0.000000                            0.000000 Vr hd\  
    Tilt Y tolerance on surface (degrees) 2 U:uF rb,  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 s3y"y_u  
    Change in Focus                :       0.000000                            0.000000 Lc_cB`  
    Decenter X tolerance on surface 3 6xoCB/]  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5G l:jRu  
    Change in Focus                :       0.000000                            0.000000 r>g5_"FL  
    Decenter Y tolerance on surface 3 pMzlpmW;P  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 B}^l'p_u  
    Change in Focus                :       0.000000                            0.000000 eu0j jeB  
    Tilt X tolerance on surface (degrees) 3 h@fF`  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 LN`Y`G|op  
    Change in Focus                :       0.000000                            0.000000 #7=- zda5  
    Tilt Y tolerance on surface (degrees) 3 3`Gb ;D  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 <v3pI!)x  
    Change in Focus                :       0.000000                            0.000000 G#j~8`3X  
    Irregularity of surface 1 in fringes nJY3 1(p  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 >*WT[UU  
    Change in Focus                :       0.000000                            0.000000 ?<1~KLPMhY  
    Irregularity of surface 2 in fringes F"0=r  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 T+41,  
    Change in Focus                :       0.000000                            0.000000 G{gc]7\=Cd  
    Irregularity of surface 3 in fringes z m+3aF  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ]|_+lik#  
    Change in Focus                :       0.000000                            0.000000 sPvjJr"s  
    Index tolerance on surface 1 ^y[- e9O|  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 }70A>JBw  
    Change in Focus                :       0.000000                            0.000000 ,PeE'$q  
    Index tolerance on surface 2 aole`PD,l  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ~8U0(n:^  
    Change in Focus                :       0.000000                           -0.000000 l<:\w.Gl  
    v (=E R%  
    Worst offenders: =Y5_@}\0  
    Type                      Value      Criterion        Change CTJwZY7  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 mX[J15  
    TSTY   2             0.20000000     0.35349910    -0.19053324 k,-0OoCL-!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 >DR$}{IV  
    TSTX   2             0.20000000     0.35349910    -0.19053324 aUq 2$lw1  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 +P<#6<gR  
    TSTY   1             0.20000000     0.42678383    -0.11724851 vQy+^deW  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 e?+&2zMq  
    TSTX   1             0.20000000     0.42678383    -0.11724851 {43 J'WsJ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 p{AX"|QM"  
    TSTY   3             0.20000000     0.42861670    -0.11541563 }J $\<ZT  
    mI5!rrRD|  
    Estimated Performance Changes based upon Root-Sum-Square method: U\-=|gQ'  
    Nominal MTF                 :     0.54403234 h}Lrpr2r  
    Estimated change            :    -0.36299231 w9675D+  
    Estimated MTF               :     0.18104003 vF)eo"_s*  
    f /t`B^}@  
    Compensator Statistics: iw{^nSD  
    Change in back focus: *gOUpbtXa  
    Minimum            :        -0.000000 ydMSL25<+  
    Maximum            :         0.000000 eU\XAN#@  
    Mean               :        -0.000000 %:Z_~7ZR  
    Standard Deviation :         0.000000 Ho1V)T>  
    kAq#cLprG  
    Monte Carlo Analysis: -PTfsQk  
    Number of trials: 20 6eb~Z6n&?  
     %e(DPX  
    Initial Statistics: Normal Distribution 5,?^SK|'x  
    Q9i[?=F:z  
      Trial       Criterion        Change b-RuUfUn0  
          1     0.42804416    -0.11598818 1p8hn!V  
    Change in Focus                :      -0.400171 d6)+d9?<  
          2     0.54384387    -0.00018847 B_* Ayk  
    Change in Focus                :       1.018470 *!ecb1U5  
          3     0.44510003    -0.09893230 73JrK_h  
    Change in Focus                :      -0.601922 QW_BT ^d"  
          4     0.18154684    -0.36248550 ~SS3gLv  
    Change in Focus                :       0.920681 9 dK`  
          5     0.28665820    -0.25737414 KbMan~Pb6  
    Change in Focus                :       1.253875 iXL?ic  
          6     0.21263372    -0.33139862 ]K QQdr   
    Change in Focus                :      -0.903878 w-3Lw<  
          7     0.40051424    -0.14351809 sgRWjrc/  
    Change in Focus                :      -1.354815 h4Xz"i{z  
          8     0.48754161    -0.05649072 )KOIf{  
    Change in Focus                :       0.215922 ^U##9KkP  
          9     0.40357468    -0.14045766 WEtPIHruyt  
    Change in Focus                :       0.281783 R?M>uaxn  
         10     0.26315315    -0.28087919 C7K]c4T  
    Change in Focus                :      -1.048393 :*s@L2D6  
         11     0.26120585    -0.28282649 ij1YV2v  
    Change in Focus                :       1.017611 NryOdt tI  
         12     0.24033815    -0.30369419 !+]KxB   
    Change in Focus                :      -0.109292 kn/xt  
         13     0.37164046    -0.17239188 0 {  
    Change in Focus                :      -0.692430 GJ F &id  
         14     0.48597489    -0.05805744 j4u ["O3  
    Change in Focus                :      -0.662040 (T%Ue2zlY  
         15     0.21462327    -0.32940907 $9@AwS@Uu  
    Change in Focus                :       1.611296 mtdy@=?1Y  
         16     0.43378226    -0.11025008 GWv i  
    Change in Focus                :      -0.640081 ,T$ GOjt  
         17     0.39321881    -0.15081353 F|@\IVEB]  
    Change in Focus                :       0.914906 Vcnc=ct  
         18     0.20692530    -0.33710703 v7\rW{~Jd&  
    Change in Focus                :       0.801607 vmh>|N4a7  
         19     0.51374068    -0.03029165 ]LEaoOecu  
    Change in Focus                :       0.947293 _3.rPS,s  
         20     0.38013374    -0.16389860 cICf V,j  
    Change in Focus                :       0.667010 }9&dY!h +  
    )sNPWn8<Uy  
    Number of traceable Monte Carlo files generated: 20 =- ,'LOE  
    M&)\PbMc  
    Nominal     0.54403234 7iyx_gyo  
    Best        0.54384387    Trial     2 a&UzIFdB  
    Worst       0.18154684    Trial     4 !qU1RdZ  
    Mean        0.35770970 pRd'\+  
    Std Dev     0.11156454 mxpj<^n}  
    t#3 _M=L  
    AyPtbrO  
    Compensator Statistics: qDU4W7|T`  
    Change in back focus: g>k?03;  
    Minimum            :        -1.354815 DEbMb6)U  
    Maximum            :         1.611296 K/j u=>  
    Mean               :         0.161872 @_7rd  
    Standard Deviation :         0.869664 [ D.%v~j  
    -y{(h% 6  
    90% >       0.20977951               '#=0q  
    80% >       0.22748071               bE{Y K  
    50% >       0.38667627               3+(lKd  
    20% >       0.46553746               Sc/$ 2gSG  
    10% >       0.50064115                fx>U2  
    2dcvB]T!  
    End of Run. 2pU'&8  
    ]:b52Z  
    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 Cs y,3XG  
    /'5d0' ,M  
    ?c+$9  
    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 5[4nFa}R:5  
    l1KgPRmEP  
    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                 Qrg- xu=  
    80% >       0.22748071                 iw3\`,5   
    50% >       0.38667627                 6]~/`6Dub  
    20% >       0.46553746                 "a(4])  
    10% >       0.50064115 E;{RNf|  
    FHw%ynC  
    最后这个数值是MTF值呢，还是MTF的公差？ \X _}\_c,d  
    z<%bNnSO  
    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？？？   HbI{Xf[6LP  
    HI 1T  
    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  : #~nXAs]Q  
    90% >       0.20977951                 " $farDDoF  
    80% >       0.22748071                 I F6$@Q  
    50% >       0.38667627                 r4/b~n+*  
    20% >       0.46553746                 xjbI1qCfe  
    10% >       0.50064115 en'[_43  
    ....... c=\_[G(  
    #rX ^)2  
    N.q~\sF^  
    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   A4@z+ebb l  
    Mode                : Sensitivities [>?|wQy>=  
    Sampling            : 2 6O{QmB0KK  
    Nominal Criterion   : 0.54403234 e_epuki  
    Test Wavelength     : 0.6328 9)vU/fJ|  
    W)r|9G8T  
    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？ )fXw~  
    -FZNk}  
    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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