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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 rQ6>*0xL_  
    Ed{sC[j=  
    A_e5Vb ,u.  
    aT+w6{%Z  
    然后添加了默认公差分析,基本没变 D #7q3s  
    _ b</ ::Tp  
    P}>>$$b\Yi  
    'cAS>s"$}V  
    然后运行分析的结果如下: Z6Z/Y()4Tl  
    9qB4\ONXZ  
    Analysis of Tolerances ?GtI.flV  
    }f% Qk0^  
    File : E:\光学设计资料\zemax练习\f500.ZMX QAMcI:5  
    Title: e 'F:LMX  
    Date : TUE JUN 21 2011 V]"pM]>3X  
    PfB9 .f{  
    Units are Millimeters. 94]i|2qj*  
    All changes are computed using linear differences. 5*Qzw[[=  
    ts("(zI1E  
    Paraxial Focus compensation only. (ip3{d{CT]  
    ,U+>Q!$`\^  
    WARNING: Solves should be removed prior to tolerancing. qn,fx6v4  
    "`%UC#  
    Mnemonics: wehiX7y  
    TFRN: Tolerance on curvature in fringes. *J >6i2M,u  
    TTHI: Tolerance on thickness. "3|OB, <;:  
    TSDX: Tolerance on surface decentering in x. &&m1_K  
    TSDY: Tolerance on surface decentering in y. NS TO\36  
    TSTX: Tolerance on surface tilt in x (degrees). J!dv"Ww"  
    TSTY: Tolerance on surface tilt in y (degrees). A:(qF.Tm  
    TIRR: Tolerance on irregularity (fringes). I)0_0JXs  
    TIND: Tolerance on Nd index of refraction. Tj\hAcD  
    TEDX: Tolerance on element decentering in x. h?} S|>9  
    TEDY: Tolerance on element decentering in y. l Ft&cy2  
    TETX: Tolerance on element tilt in x (degrees). B[ D s?:  
    TETY: Tolerance on element tilt in y (degrees). Snp(&TD<<  
    =UWW(^M#[:  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. h0$ \JXk  
    iP:^nt?  
    WARNING: Boundary constraints on compensators will be ignored. ,^<39ng  
    1,U)rx$H  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 86dz Jh  
    Mode                : Sensitivities @+)T"5_Y[  
    Sampling            : 2 "Vp:Sq9y  
    Nominal Criterion   : 0.54403234 ac966<#  
    Test Wavelength     : 0.6328 ae2SU4Jx  
    )7Qp9Fxo  
    C@-cLk  
    Fields: XY Symmetric Angle in degrees :S!!J*0  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY `0w!&  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 R yM2 9uD  
    LfK/wSvWw  
    Sensitivity Analysis: {i3=N{5b  
    P3Ah1X7W"C  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| `krVfE;_O  
    Type                      Value      Criterion        Change          Value      Criterion        Change _F^NX%  
    Fringe tolerance on surface 1 =}u?1~V  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 /[ Rp~YzW  
    Change in Focus                :      -0.000000                            0.000000 0;*[}M]Z  
    Fringe tolerance on surface 2 Ox)_7A  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 =4&"fZ"v  
    Change in Focus                :       0.000000                            0.000000 sqjDh  
    Fringe tolerance on surface 3 g2rH"3sC  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 qLKL*m  
    Change in Focus                :      -0.000000                            0.000000 w vI v+Q9  
    Thickness tolerance on surface 1 P=9UK`n  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 YB^m!A),I[  
    Change in Focus                :       0.000000                            0.000000 H7<g5pv  
    Thickness tolerance on surface 2 A2\3.3  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Y`6<:8[?  
    Change in Focus                :       0.000000                           -0.000000 A_2lG!! 6  
    Decenter X tolerance on surfaces 1 through 3 g0s4ZI+T  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005  p1&=D%/  
    Change in Focus                :       0.000000                            0.000000 5Fq+^  
    Decenter Y tolerance on surfaces 1 through 3 Mpk7$=hjc  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 fZJM'+J@A  
    Change in Focus                :       0.000000                            0.000000 $"}*#<Z  
    Tilt X tolerance on surfaces 1 through 3 (degrees) D4$"02"  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 AUfcf *  
    Change in Focus                :       0.000000                            0.000000 4X}TG  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 1-.i^Hal  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 l2wu>Ar7.  
    Change in Focus                :       0.000000                            0.000000 3hzz*9/n  
    Decenter X tolerance on surface 1 :`<MlX  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 p!<PRms@  
    Change in Focus                :       0.000000                            0.000000 <A`SC;k\u  
    Decenter Y tolerance on surface 1 <$#^)]Ts  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ORXH<;^0y  
    Change in Focus                :       0.000000                            0.000000 rsw= a_S  
    Tilt X tolerance on surface (degrees) 1 vNZ"x)?  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 _6YfPk+  
    Change in Focus                :       0.000000                            0.000000 y`/:E<fVk  
    Tilt Y tolerance on surface (degrees) 1 {W%XS E  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ^?A>)?Sq  
    Change in Focus                :       0.000000                            0.000000 t~qAA\p}o  
    Decenter X tolerance on surface 2 V{\1qg{  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 c`\qupnY  
    Change in Focus                :       0.000000                            0.000000 m Q<Vwx0  
    Decenter Y tolerance on surface 2 `}a-prT<f  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 GW7+#  
    Change in Focus                :       0.000000                            0.000000 )]\-Uy$x  
    Tilt X tolerance on surface (degrees) 2 bhfKhXh8  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }We-sZ/w7r  
    Change in Focus                :       0.000000                            0.000000 Q#&6J=}  
    Tilt Y tolerance on surface (degrees) 2 3u s^\w#  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 R[m+s=+  
    Change in Focus                :       0.000000                            0.000000 Kv#Q$$)r  
    Decenter X tolerance on surface 3 F+W{R+6  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 >rYMOC~  
    Change in Focus                :       0.000000                            0.000000 6\y?+H1  
    Decenter Y tolerance on surface 3 xsvJjs;=  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 A-M6MW  
    Change in Focus                :       0.000000                            0.000000 @f,/K1k  
    Tilt X tolerance on surface (degrees) 3 ?]+! gz1  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5F]2.<i  
    Change in Focus                :       0.000000                            0.000000 ]9w TAb  
    Tilt Y tolerance on surface (degrees) 3 f>Tn#OW  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 uNqN &7g  
    Change in Focus                :       0.000000                            0.000000 ,WAJ& '^  
    Irregularity of surface 1 in fringes 5UG"i_TC  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 &F'n >QT9q  
    Change in Focus                :       0.000000                            0.000000 tU>7 jo[-p  
    Irregularity of surface 2 in fringes $2Bll5!]  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 'S9jMyZrZ  
    Change in Focus                :       0.000000                            0.000000 fEGnI\  
    Irregularity of surface 3 in fringes lj+&3<E  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 H#T&7X_<  
    Change in Focus                :       0.000000                            0.000000 N7)K\)DS!z  
    Index tolerance on surface 1 $"6Gv  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 H}8kku>7  
    Change in Focus                :       0.000000                            0.000000 %P C[-(Q  
    Index tolerance on surface 2 Pv*]AF;9pQ  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 /7ykmW  
    Change in Focus                :       0.000000                           -0.000000 fOP3`G^\  
    y3P4]sq  
    Worst offenders: B f.- 5  
    Type                      Value      Criterion        Change 8RS@YO  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 /#?! 9c  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Y+0GJuBf  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Q0g^%  
    TSTX   2             0.20000000     0.35349910    -0.19053324 CWb*bw0  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 KvO5-g  
    TSTY   1             0.20000000     0.42678383    -0.11724851 J M;WCV%NM  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 d9l2mJzW  
    TSTX   1             0.20000000     0.42678383    -0.11724851 tNYuuC%N  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 "cvhx/\1#  
    TSTY   3             0.20000000     0.42861670    -0.11541563 z0&Y_Up+5  
    +{%)}?F  
    Estimated Performance Changes based upon Root-Sum-Square method: x( (Rm_'  
    Nominal MTF                 :     0.54403234 *0_Q0SeE,o  
    Estimated change            :    -0.36299231  LYyud  
    Estimated MTF               :     0.18104003 vLGnLpt  
    *De'4r 2  
    Compensator Statistics: CbOCL~ "  
    Change in back focus: ~*e@^Nv)v  
    Minimum            :        -0.000000 _KZ TY`/*  
    Maximum            :         0.000000 WM ]eb, 8q  
    Mean               :        -0.000000 &#!1 Y[e^  
    Standard Deviation :         0.000000 /?V-  
    Sf2xI'  
    Monte Carlo Analysis: v]}\Ns/  
    Number of trials: 20 _s}`ohKvD  
    q RRvZhf  
    Initial Statistics: Normal Distribution :*YnH&  
    f*Os~@K  
      Trial       Criterion        Change oFsV0 {x%)  
          1     0.42804416    -0.11598818 ! %N@>[  
    Change in Focus                :      -0.400171 :BB=E'293  
          2     0.54384387    -0.00018847 hUEA)c  
    Change in Focus                :       1.018470 dq0!.gBT2  
          3     0.44510003    -0.09893230 $KP&#;9  
    Change in Focus                :      -0.601922 )^ PWr^  
          4     0.18154684    -0.36248550 HumL(S'm  
    Change in Focus                :       0.920681 d)d0,fi?-  
          5     0.28665820    -0.25737414 h-DHIk3/  
    Change in Focus                :       1.253875 ,E"n7*6mr  
          6     0.21263372    -0.33139862 *JZlG%z  
    Change in Focus                :      -0.903878 bHQ) :W  
          7     0.40051424    -0.14351809 Xv+,Z<>iQ  
    Change in Focus                :      -1.354815 o4agaA3k  
          8     0.48754161    -0.05649072 \mWH8Z }Z  
    Change in Focus                :       0.215922 Y8N+v+V/  
          9     0.40357468    -0.14045766 Of}C.N8  
    Change in Focus                :       0.281783 rE0%R+4?  
         10     0.26315315    -0.28087919 m|v$F,Lv  
    Change in Focus                :      -1.048393 5<P6PHdY  
         11     0.26120585    -0.28282649 ARG8\qU  
    Change in Focus                :       1.017611 !lBK!'0  
         12     0.24033815    -0.30369419 [GcW*v  
    Change in Focus                :      -0.109292 R \]C;@J<  
         13     0.37164046    -0.17239188 DVDzYR**4  
    Change in Focus                :      -0.692430 |7${E^u  
         14     0.48597489    -0.05805744 x~K79Mya  
    Change in Focus                :      -0.662040 o'8nQ Tao  
         15     0.21462327    -0.32940907 7xfS%'=y"  
    Change in Focus                :       1.611296 D0>Pc9  
         16     0.43378226    -0.11025008 B>@l(e)b  
    Change in Focus                :      -0.640081  GInw7  
         17     0.39321881    -0.15081353 1MmEP  
    Change in Focus                :       0.914906 *]nk{jo2  
         18     0.20692530    -0.33710703 9!.S9[[N  
    Change in Focus                :       0.801607 ,H1K sN  
         19     0.51374068    -0.03029165 k= &n>P  
    Change in Focus                :       0.947293 whm| "}x)u  
         20     0.38013374    -0.16389860 fB]NEx|o~  
    Change in Focus                :       0.667010 rK|("  
    &(e5*Q  
    Number of traceable Monte Carlo files generated: 20 CyXaHO  
    h\Q@zR*0a  
    Nominal     0.54403234 T6."j_  
    Best        0.54384387    Trial     2 cIcu=U  
    Worst       0.18154684    Trial     4 ^;tB,7:*V  
    Mean        0.35770970 |dDKO  
    Std Dev     0.11156454 2'-84  
    %jHe_8=o  
    GRaU]Z]ck  
    Compensator Statistics: LF#[$ so{i  
    Change in back focus: d8U<V<H<  
    Minimum            :        -1.354815 5"X@<;H%  
    Maximum            :         1.611296 h@o6=d=4  
    Mean               :         0.161872 {'z$5<|  
    Standard Deviation :         0.869664 7 |GSs=  
    )PW|RW  
    90% >       0.20977951               CxSh.$l  
    80% >       0.22748071               A;dD'Kgl  
    50% >       0.38667627               X4Pm&ol  
    20% >       0.46553746               +L@\/=;G  
    10% >       0.50064115                w'E?L`c  
    '+3C2!  
    End of Run. z^s\&gix  
    zx*D)i5-  
    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 i"pOYZW1  
    [rL 8L6,!  
    B^/k`h6J  
    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 *aFY+.;U`  
    =LGSywWM9  
    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                 3D1y^I  
    80% >       0.22748071                 I|qhj*_C  
    50% >       0.38667627                 }/,Rp/+7]  
    20% >       0.46553746                 V aG Qre  
    10% >       0.50064115 nc\2A>f`  
    G%AO%II  
    最后这个数值是MTF值呢,还是MTF的公差? 9I;~P &  
    4*Gv0#dga  
    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???   ~G-W|>  
    TA2ETvz^  
    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  : 3nc\6v%  
    90% >       0.20977951                 K: $mEB[c<  
    80% >       0.22748071                 oYTLC@98}  
    50% >       0.38667627                 ".$kOH_:  
    20% >       0.46553746                 /.CS6W^z  
    10% >       0.50064115 ;nQ=! .#Q  
    ....... LjE3|+pJ  
    1zH?.-  
    1Q!^*D  
    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   P-gjSE|yh  
    Mode                : Sensitivities KB|mtsi  
    Sampling            : 2  c1s&  
    Nominal Criterion   : 0.54403234 2p\xgAW?  
    Test Wavelength     : 0.6328 OObAn^bt  
    xatq  
    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? d wG!]j>:_  
    d/OP+yzgZ  
    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?
    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