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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 Q!M)xNl/  
    L "<B;u5pM  
    LihjGkj\g  
    qXXGF_Q  
    然后添加了默认公差分析,基本没变 M_``'gw  
    [k]|Qi nk  
    zx1:`K0bi  
    \nqo%5XL  
    然后运行分析的结果如下: }xlKonk  
    &D#+6M&LK{  
    Analysis of Tolerances Z v0C@r  
    dZGbC9  
    File : E:\光学设计资料\zemax练习\f500.ZMX =w<v3wWN4  
    Title: Zwe[_z!*D  
    Date : TUE JUN 21 2011 Vj; vo`T  
    7?)/>lx\>$  
    Units are Millimeters. N*DhjEU)[  
    All changes are computed using linear differences. y7<&vIEC  
    |)W!jC&k  
    Paraxial Focus compensation only. r-w2\2  
    fn9#>~vrD  
    WARNING: Solves should be removed prior to tolerancing. TD04/ ISHT  
    I"xWw/Ec  
    Mnemonics: Y(GN4@`S  
    TFRN: Tolerance on curvature in fringes. J< JBdk  
    TTHI: Tolerance on thickness. J  fcMca  
    TSDX: Tolerance on surface decentering in x. eSl-9 ^  
    TSDY: Tolerance on surface decentering in y. -cNx1et  
    TSTX: Tolerance on surface tilt in x (degrees). FoPginZ]J  
    TSTY: Tolerance on surface tilt in y (degrees). G5Q!L;3HZ  
    TIRR: Tolerance on irregularity (fringes). ~_!ts{[E  
    TIND: Tolerance on Nd index of refraction. )%du@a8  
    TEDX: Tolerance on element decentering in x. Vos?PqUi 4  
    TEDY: Tolerance on element decentering in y. ;^l_i4A  
    TETX: Tolerance on element tilt in x (degrees). fo\\o4Qyh  
    TETY: Tolerance on element tilt in y (degrees). yZSvn[f  
    2w?G.pO#  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Xy#V Q{!  
    t ,qul4y}  
    WARNING: Boundary constraints on compensators will be ignored. T{*^_  
    8U.$FMx :  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm W81o"TR|pt  
    Mode                : Sensitivities J"[3~&em  
    Sampling            : 2 "+iAd.qd  
    Nominal Criterion   : 0.54403234 @~jxG%y86  
    Test Wavelength     : 0.6328 /aUFc'5  
    2/tb6' =  
    Jm![W8L  
    Fields: XY Symmetric Angle in degrees E!aq?`-'!  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 2ALj}  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Xyv8LB  
    eX<K5K.B  
    Sensitivity Analysis: w)S;J,Hv  
    wL<j:>Ke[3  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| -[.PH M6+?  
    Type                      Value      Criterion        Change          Value      Criterion        Change '\*A"8;h  
    Fringe tolerance on surface 1 C<he4n.  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1<uwU(  
    Change in Focus                :      -0.000000                            0.000000 o`%I{?UCDJ  
    Fringe tolerance on surface 2 }(=ml7)v  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 |vy]8?Ak  
    Change in Focus                :       0.000000                            0.000000 *1;23BiH-  
    Fringe tolerance on surface 3 `=!p$hg($  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 rrQ0qg  
    Change in Focus                :      -0.000000                            0.000000 `I> ], J/  
    Thickness tolerance on surface 1 6=>7M b$  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 6H;kJHn  
    Change in Focus                :       0.000000                            0.000000 T|f_~#?eV  
    Thickness tolerance on surface 2 tL8't]M,  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 o5#,\Y[ g  
    Change in Focus                :       0.000000                           -0.000000 f-vK}'Z`,  
    Decenter X tolerance on surfaces 1 through 3 0^>E`/  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 *?Wtj  
    Change in Focus                :       0.000000                            0.000000 h Z#\t  
    Decenter Y tolerance on surfaces 1 through 3 GUCM4jVT^  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 nx :)k-p_[  
    Change in Focus                :       0.000000                            0.000000 A;%kl`~iyz  
    Tilt X tolerance on surfaces 1 through 3 (degrees) yGV{^?yoP  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 u '@Ely  
    Change in Focus                :       0.000000                            0.000000 tG 7+7Z =  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) t/Z!O z6ZE  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 <t6 d)mJ%  
    Change in Focus                :       0.000000                            0.000000 [ i9[Mj  
    Decenter X tolerance on surface 1 xL&PJ /'  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ~\bHfiIDy  
    Change in Focus                :       0.000000                            0.000000 ,%='>A  
    Decenter Y tolerance on surface 1 x=3I)}J(kn  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 0HPO" x3-O  
    Change in Focus                :       0.000000                            0.000000 #f 9qlM32  
    Tilt X tolerance on surface (degrees) 1 /a%KS3>V*  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 I:/4t^%  
    Change in Focus                :       0.000000                            0.000000 *08+\ed"#  
    Tilt Y tolerance on surface (degrees) 1 5xv,!/@  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Z`"n:'&  
    Change in Focus                :       0.000000                            0.000000 3dU#Ueu  
    Decenter X tolerance on surface 2 MVuP |&:n  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 (6[Wr}SW5  
    Change in Focus                :       0.000000                            0.000000 (lWKy9eTy`  
    Decenter Y tolerance on surface 2 jhcuK:`L  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 |bvGYsn_#=  
    Change in Focus                :       0.000000                            0.000000 %((cFQ9  
    Tilt X tolerance on surface (degrees) 2 )Jz!Ut  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 cB36p&%  
    Change in Focus                :       0.000000                            0.000000 '7=<#Blc  
    Tilt Y tolerance on surface (degrees) 2 ?7 X3 P  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 I,z"_[^G  
    Change in Focus                :       0.000000                            0.000000 "D!Dr1  
    Decenter X tolerance on surface 3 dff#{  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 'T{pdEn8u  
    Change in Focus                :       0.000000                            0.000000 JSUzEAKe  
    Decenter Y tolerance on surface 3 -sD:+Te  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 rX)o3>q^?  
    Change in Focus                :       0.000000                            0.000000 P ]_Vz  
    Tilt X tolerance on surface (degrees) 3 `bi k/o=%  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 e7wKjt2fy  
    Change in Focus                :       0.000000                            0.000000 t.u{.P\Md\  
    Tilt Y tolerance on surface (degrees) 3 zPA>af~Ej  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 X &09  
    Change in Focus                :       0.000000                            0.000000 ;q^,[(8  
    Irregularity of surface 1 in fringes b__n~\q_  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ~vkud+r  
    Change in Focus                :       0.000000                            0.000000 $$/S8LmmK  
    Irregularity of surface 2 in fringes H;X~<WN&AW  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _]Z$YM  
    Change in Focus                :       0.000000                            0.000000 vkh;qPD  
    Irregularity of surface 3 in fringes 5Wj5IS/  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 /. f!  
    Change in Focus                :       0.000000                            0.000000 5M]6'X6I  
    Index tolerance on surface 1 H.f9d.<W%  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 hiT9H5 6 >  
    Change in Focus                :       0.000000                            0.000000 cRPr9LfD@  
    Index tolerance on surface 2 vatx+)  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 UfO'.8*v  
    Change in Focus                :       0.000000                           -0.000000 %{c2lyw  
    [29$~.m$Y  
    Worst offenders: wN$uX#W|  
    Type                      Value      Criterion        Change ..]B9M.  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 s')!<E+z\t  
    TSTY   2             0.20000000     0.35349910    -0.19053324 %9cqJ]S  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Q&tFv;1w6  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ]IL3$eR  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Ab/v_ mA;  
    TSTY   1             0.20000000     0.42678383    -0.11724851 v UJ sFR  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 )vxVg*.Ee  
    TSTX   1             0.20000000     0.42678383    -0.11724851 T`j  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 H74NU_   
    TSTY   3             0.20000000     0.42861670    -0.11541563 ye9QTK6$,  
    I*%&)Hj~  
    Estimated Performance Changes based upon Root-Sum-Square method: oM m/!Dc  
    Nominal MTF                 :     0.54403234 6eVe}V4W  
    Estimated change            :    -0.36299231 &fh.w]\  
    Estimated MTF               :     0.18104003 +*]SP@|IYI  
    Q2??Kp] 1  
    Compensator Statistics: )GQ D*b  
    Change in back focus: e=|F(iW  
    Minimum            :        -0.000000 )yfOrsM  
    Maximum            :         0.000000 `=WzG"  
    Mean               :        -0.000000 *T1L )Cp  
    Standard Deviation :         0.000000 L+`}euu5  
    5LnB]dW  
    Monte Carlo Analysis: Y>c5:F;  
    Number of trials: 20 PLl x~A  
    !: `Ra  
    Initial Statistics: Normal Distribution a?f5(qW3  
    Fvcq^uZ  
      Trial       Criterion        Change r5<e}t-  
          1     0.42804416    -0.11598818 rl_1),J\qG  
    Change in Focus                :      -0.400171 4{1c7g  
          2     0.54384387    -0.00018847 +K @J*W 1  
    Change in Focus                :       1.018470 Vz+=ZK r5  
          3     0.44510003    -0.09893230 t2`X!`  
    Change in Focus                :      -0.601922 P<g|y4h  
          4     0.18154684    -0.36248550 `3H?*\<(  
    Change in Focus                :       0.920681 7zi^{]  
          5     0.28665820    -0.25737414 Ji)a%j1V9  
    Change in Focus                :       1.253875 %t(, *;  
          6     0.21263372    -0.33139862 c>%z)uY>/  
    Change in Focus                :      -0.903878 rYP8V >  
          7     0.40051424    -0.14351809 oC;l5v<  
    Change in Focus                :      -1.354815 'ocwXyP,  
          8     0.48754161    -0.05649072 F\YcSDM  
    Change in Focus                :       0.215922 M ?: f^  
          9     0.40357468    -0.14045766 "fX8xZdS  
    Change in Focus                :       0.281783 -+Awm{X_@  
         10     0.26315315    -0.28087919 'bQ s_  
    Change in Focus                :      -1.048393 bE%mgaOh  
         11     0.26120585    -0.28282649 ;Ln7_  
    Change in Focus                :       1.017611 $rV:&A  
         12     0.24033815    -0.30369419 J_)z:`[yE  
    Change in Focus                :      -0.109292 v f/$`IJ  
         13     0.37164046    -0.17239188 h1D~AgZOVj  
    Change in Focus                :      -0.692430 ,T1XX2? :  
         14     0.48597489    -0.05805744 Z"PDOwj5  
    Change in Focus                :      -0.662040 *=KexOa9  
         15     0.21462327    -0.32940907 (urfaZ;@+  
    Change in Focus                :       1.611296 lMI ix0sSj  
         16     0.43378226    -0.11025008 e`gGzyM  
    Change in Focus                :      -0.640081 LU 5 `!0m  
         17     0.39321881    -0.15081353 1Tts3O .  
    Change in Focus                :       0.914906  Cq~ah  
         18     0.20692530    -0.33710703 kcZ;SYosj  
    Change in Focus                :       0.801607 Rqd%#v  
         19     0.51374068    -0.03029165 (J?}eb;>n  
    Change in Focus                :       0.947293 _tR.RAaa"  
         20     0.38013374    -0.16389860 lpX p )r+  
    Change in Focus                :       0.667010 `U?H^,FVA  
    n?ZH2dI \0  
    Number of traceable Monte Carlo files generated: 20 VNh,pQ(  
    =G3J.S*Riy  
    Nominal     0.54403234 ]!S)O|_D[  
    Best        0.54384387    Trial     2 FZ'>LZ  
    Worst       0.18154684    Trial     4 f%"_U'  
    Mean        0.35770970 Wcay'#K,  
    Std Dev     0.11156454 QP-<$P;~  
    o^"d2=  
    ezNE9g  
    Compensator Statistics: 8b#Yd  
    Change in back focus:  PtVNG  
    Minimum            :        -1.354815 |jCE9Ve#  
    Maximum            :         1.611296 ]mGsNQ ].H  
    Mean               :         0.161872 =Q8^@i4[&D  
    Standard Deviation :         0.869664   } k%\  
    N#6A>  
    90% >       0.20977951               [HZCnO|N  
    80% >       0.22748071               qh'f,#dI}  
    50% >       0.38667627               F|3FvxA  
    20% >       0.46553746               s }R:q  
    10% >       0.50064115                Xrzh*sp  
    RX<^MzCDV  
    End of Run. (nZ=9+j]d  
    TB3T:A>2  
    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 cB"F1~z  
    2g07wJ6x  
    dvdBRrf  
    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 GLcZ=6)"'  
     f"=4,  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 Pds*M?&F  
    80% >       0.22748071                 s6h Wq&C  
    50% >       0.38667627                 }AfPBfgC1z  
    20% >       0.46553746                 {3uSg)  
    10% >       0.50064115 X@4d~6k?  
    l@F e(^5E  
    最后这个数值是MTF值呢,还是MTF的公差? |g^W @.P  
    C>;8`6_!gU  
    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???   iiDkk  
    fJ lN'F7  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : e]fC!>w(\  
    90% >       0.20977951                 []^>QsS(X  
    80% >       0.22748071                 B ~GyS"  
    50% >       0.38667627                 '|r !yAO6  
    20% >       0.46553746                 *~X\c Z  
    10% >       0.50064115 46`{mPd{aO  
    ....... w]XBq~KO  
    <O&s 'A[  
    nTlrG6  
    这些数值都是MTF值
    离线天地大同
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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   !;oBvE7Kh  
    Mode                : Sensitivities pTd@i1%Nr  
    Sampling            : 2 }wKU=Vm  
    Nominal Criterion   : 0.54403234 [rem,i+  
    Test Wavelength     : 0.6328 <L 0_< T  
    E2cmT$6  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? Z~<V>b  
    F u)7J4Z  
    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?
    离线天地大同
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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
    离线sansummer
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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?
    离线天地大同
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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